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SubjectRe: Linux 4.4.157
diff --git a/Makefile b/Makefile
index 6dd5924a7ea5..2d55f88e6a08 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 156
+SUBLEVEL = 157
EXTRAVERSION =
NAME = Blurry Fish Butt

diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig
index f1ac9818b751..dbee1934dfc6 100644
--- a/arch/arc/configs/axs101_defconfig
+++ b/arch/arc/configs/axs101_defconfig
@@ -1,6 +1,5 @@
CONFIG_CROSS_COMPILE="arc-linux-"
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
-# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig
index 323486d6ee83..561eac854cc3 100644
--- a/arch/arc/configs/axs103_defconfig
+++ b/arch/arc/configs/axs103_defconfig
@@ -1,6 +1,5 @@
CONFIG_CROSS_COMPILE="arc-linux-"
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
-# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig
index 66191cd0447e..aa4f261b6508 100644
--- a/arch/arc/configs/axs103_smp_defconfig
+++ b/arch/arc/configs/axs103_smp_defconfig
@@ -1,6 +1,5 @@
CONFIG_CROSS_COMPILE="arc-linux-"
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
-# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index d113c8ded6e2..6df3a4ea77fc 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -349,6 +349,7 @@ static int __init octeon_ehci_device_init(void)
return 0;

pd = of_find_device_by_node(ehci_node);
+ of_node_put(ehci_node);
if (!pd)
return 0;

@@ -411,6 +412,7 @@ static int __init octeon_ohci_device_init(void)
return 0;

pd = of_find_device_by_node(ohci_node);
+ of_node_put(ohci_node);
if (!pd)
return 0;

diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 75fa296836fc..ab1df19b0957 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -141,14 +141,14 @@ static inline void * phys_to_virt(unsigned long address)
/*
* ISA I/O bus memory addresses are 1:1 with the physical address.
*/
-static inline unsigned long isa_virt_to_bus(volatile void * address)
+static inline unsigned long isa_virt_to_bus(volatile void *address)
{
- return (unsigned long)address - PAGE_OFFSET;
+ return virt_to_phys(address);
}

-static inline void * isa_bus_to_virt(unsigned long address)
+static inline void *isa_bus_to_virt(unsigned long address)
{
- return (void *)(address + PAGE_OFFSET);
+ return phys_to_virt(address);
}

#define isa_page_to_bus page_to_phys
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 354b99f56c1e..ed6cac4a4df0 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -115,7 +115,6 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
struct thread_info *ti = task_thread_info(p);
struct pt_regs *childregs, *regs = current_pt_regs();
unsigned long childksp;
- p->set_child_tid = p->clear_child_tid = NULL;

childksp = (unsigned long)task_stack_page(p) + THREAD_SIZE - 32;

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 5d3a25e1cfae..52e8c2026853 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -712,7 +712,8 @@ static void r4k_flush_icache_range(unsigned long start, unsigned long end)
static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
{
/* Catch bad driver code */
- BUG_ON(size == 0);
+ if (WARN_ON(size == 0))
+ return;

preempt_disable();
if (cpu_has_inclusive_pcaches) {
@@ -745,7 +746,8 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
{
/* Catch bad driver code */
- BUG_ON(size == 0);
+ if (WARN_ON(size == 0))
+ return;

preempt_disable();
if (cpu_has_inclusive_pcaches) {
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c
index 7095dfe7666b..962372143fda 100644
--- a/arch/openrisc/kernel/process.c
+++ b/arch/openrisc/kernel/process.c
@@ -152,8 +152,6 @@ copy_thread(unsigned long clone_flags, unsigned long usp,

top_of_kernel_stack = sp;

- p->set_child_tid = p->clear_child_tid = NULL;
-
/* Locate userspace context on stack... */
sp -= STACK_FRAME_OVERHEAD; /* redzone */
sp -= sizeof(struct pt_regs);
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 337c52192278..440a948c4feb 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -104,6 +104,8 @@ struct cpuinfo_x86 {
__u8 x86_phys_bits;
/* CPUID returned core id bits: */
__u8 x86_coreid_bits;
+
+ __u8 x86_cache_bits;
/* Max extended CPUID function supported: */
__u32 extended_cpuid_level;
/* Maximum supported CPUID level, -1=no CPUID: */
@@ -174,7 +176,7 @@ extern void cpu_detect(struct cpuinfo_x86 *c);

static inline unsigned long long l1tf_pfn_limit(void)
{
- return BIT_ULL(boot_cpu_data.x86_phys_bits - 1 - PAGE_SHIFT);
+ return BIT_ULL(boot_cpu_data.x86_cache_bits - 1 - PAGE_SHIFT);
}

extern void early_cpu_init(void);
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index b9e6b60df148..621bc6561189 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -634,6 +634,46 @@ void x86_spec_ctrl_setup_ap(void)

#undef pr_fmt
#define pr_fmt(fmt) "L1TF: " fmt
+
+/*
+ * These CPUs all support 44bits physical address space internally in the
+ * cache but CPUID can report a smaller number of physical address bits.
+ *
+ * The L1TF mitigation uses the top most address bit for the inversion of
+ * non present PTEs. When the installed memory reaches into the top most
+ * address bit due to memory holes, which has been observed on machines
+ * which report 36bits physical address bits and have 32G RAM installed,
+ * then the mitigation range check in l1tf_select_mitigation() triggers.
+ * This is a false positive because the mitigation is still possible due to
+ * the fact that the cache uses 44bit internally. Use the cache bits
+ * instead of the reported physical bits and adjust them on the affected
+ * machines to 44bit if the reported bits are less than 44.
+ */
+static void override_cache_bits(struct cpuinfo_x86 *c)
+{
+ if (c->x86 != 6)
+ return;
+
+ switch (c->x86_model) {
+ case INTEL_FAM6_NEHALEM:
+ case INTEL_FAM6_WESTMERE:
+ case INTEL_FAM6_SANDYBRIDGE:
+ case INTEL_FAM6_IVYBRIDGE:
+ case INTEL_FAM6_HASWELL_CORE:
+ case INTEL_FAM6_HASWELL_ULT:
+ case INTEL_FAM6_HASWELL_GT3E:
+ case INTEL_FAM6_BROADWELL_CORE:
+ case INTEL_FAM6_BROADWELL_GT3E:
+ case INTEL_FAM6_SKYLAKE_MOBILE:
+ case INTEL_FAM6_SKYLAKE_DESKTOP:
+ case INTEL_FAM6_KABYLAKE_MOBILE:
+ case INTEL_FAM6_KABYLAKE_DESKTOP:
+ if (c->x86_cache_bits < 44)
+ c->x86_cache_bits = 44;
+ break;
+ }
+}
+
static void __init l1tf_select_mitigation(void)
{
u64 half_pa;
@@ -641,16 +681,13 @@ static void __init l1tf_select_mitigation(void)
if (!boot_cpu_has_bug(X86_BUG_L1TF))
return;

+ override_cache_bits(&boot_cpu_data);
+
#if CONFIG_PGTABLE_LEVELS == 2
pr_warn("Kernel not compiled for PAE. No mitigation for L1TF\n");
return;
#endif

- /*
- * This is extremely unlikely to happen because almost all
- * systems have far more MAX_PA/2 than RAM can be fit into
- * DIMM slots.
- */
half_pa = (u64)l1tf_pfn_limit() << PAGE_SHIFT;
if (e820_any_mapped(half_pa, ULLONG_MAX - half_pa, E820_RAM)) {
pr_warn("System has more than MAX_PA/2 memory. L1TF mitigation not effective.\n");
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 4d3fa79c0f09..b12c0287d6cf 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -798,6 +798,8 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
c->x86_phys_bits = 36;
#endif

+ c->x86_cache_bits = c->x86_phys_bits;
+
if (c->extended_cpuid_level >= 0x8000000a)
c->x86_capability[CPUID_8000_000A_EDX] = cpuid_edx(0x8000000a);

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index e0a34b0d381e..c4dffae5d939 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -273,8 +273,6 @@ static noinline int vmalloc_fault(unsigned long address)
if (!(address >= VMALLOC_START && address < VMALLOC_END))
return -1;

- WARN_ON_ONCE(in_nmi());
-
/*
* Synchronize this task's top level page-table
* with the 'reference' page table.
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 46ba2402c8f9..987361113ecd 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -185,7 +185,8 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg,
}

wb_congested = wb_congested_get_create(&q->backing_dev_info,
- blkcg->css.id, GFP_NOWAIT);
+ blkcg->css.id,
+ GFP_NOWAIT | __GFP_NOWARN);
if (!wb_congested) {
ret = -ENOMEM;
goto err_put_css;
@@ -193,7 +194,7 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg,

/* allocate */
if (!new_blkg) {
- new_blkg = blkg_alloc(blkcg, q, GFP_NOWAIT);
+ new_blkg = blkg_alloc(blkcg, q, GFP_NOWAIT | __GFP_NOWARN);
if (unlikely(!new_blkg)) {
ret = -ENOMEM;
goto err_put_congested;
@@ -1022,7 +1023,7 @@ blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
}

spin_lock_init(&blkcg->lock);
- INIT_RADIX_TREE(&blkcg->blkg_tree, GFP_NOWAIT);
+ INIT_RADIX_TREE(&blkcg->blkg_tree, GFP_NOWAIT | __GFP_NOWARN);
INIT_HLIST_HEAD(&blkcg->blkg_list);
#ifdef CONFIG_CGROUP_WRITEBACK
INIT_LIST_HEAD(&blkcg->cgwb_list);
@@ -1238,7 +1239,7 @@ pd_prealloc:
if (blkg->pd[pol->plid])
continue;

- pd = pol->pd_alloc_fn(GFP_NOWAIT, q->node);
+ pd = pol->pd_alloc_fn(GFP_NOWAIT | __GFP_NOWARN, q->node);
if (!pd)
swap(pd, pd_prealloc);
if (!pd) {
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e04a7b8492cf..4e1f49434bbe 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -2905,7 +2905,8 @@ static void cfq_arm_slice_timer(struct cfq_data *cfqd)
* for devices that support queuing, otherwise we still have a problem
* with sync vs async workloads.
*/
- if (blk_queue_nonrot(cfqd->queue) && cfqd->hw_tag)
+ if (blk_queue_nonrot(cfqd->queue) && cfqd->hw_tag &&
+ !cfqd->cfq_group_idle)
return;

WARN_ON(!RB_EMPTY_ROOT(&cfqq->sort_list));
@@ -3810,7 +3811,8 @@ cfq_get_queue(struct cfq_data *cfqd, bool is_sync, struct cfq_io_cq *cic,
goto out;
}

- cfqq = kmem_cache_alloc_node(cfq_pool, GFP_NOWAIT | __GFP_ZERO,
+ cfqq = kmem_cache_alloc_node(cfq_pool,
+ GFP_NOWAIT | __GFP_ZERO | __GFP_NOWARN,
cfqd->queue->node);
if (!cfqq) {
cfqq = &cfqd->oom_cfqq;
diff --git a/block/partitions/aix.c b/block/partitions/aix.c
index f3ed7b2d89bf..8e7d358e0226 100644
--- a/block/partitions/aix.c
+++ b/block/partitions/aix.c
@@ -177,7 +177,7 @@ int aix_partition(struct parsed_partitions *state)
u32 vgda_sector = 0;
u32 vgda_len = 0;
int numlvs = 0;
- struct pvd *pvd;
+ struct pvd *pvd = NULL;
struct lv_info {
unsigned short pps_per_lv;
unsigned short pps_found;
@@ -231,10 +231,11 @@ int aix_partition(struct parsed_partitions *state)
if (lvip[i].pps_per_lv)
foundlvs += 1;
}
+ /* pvd loops depend on n[].name and lvip[].pps_per_lv */
+ pvd = alloc_pvd(state, vgda_sector + 17);
}
put_dev_sector(sect);
}
- pvd = alloc_pvd(state, vgda_sector + 17);
if (pvd) {
int numpps = be16_to_cpu(pvd->pp_count);
int psn_part1 = be32_to_cpu(pvd->psn_part1);
@@ -281,10 +282,14 @@ int aix_partition(struct parsed_partitions *state)
next_lp_ix += 1;
}
for (i = 0; i < state->limit; i += 1)
- if (lvip[i].pps_found && !lvip[i].lv_is_contiguous)
+ if (lvip[i].pps_found && !lvip[i].lv_is_contiguous) {
+ char tmp[sizeof(n[i].name) + 1]; // null char
+
+ snprintf(tmp, sizeof(tmp), "%s", n[i].name);
pr_warn("partition %s (%u pp's found) is "
"not contiguous\n",
- n[i].name, lvip[i].pps_found);
+ tmp, lvip[i].pps_found);
+ }
kfree(pvd);
}
kfree(n);
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 9628fa131757..8116cb2fef2d 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -2113,6 +2113,8 @@ static void ahci_set_aggressive_devslp(struct ata_port *ap, bool sleep)
deto = 20;
}

+ /* Make dito, mdat, deto bits to 0s */
+ devslp &= ~GENMASK_ULL(24, 2);
devslp |= ((dito << PORT_DEVSLP_DITO_OFFSET) |
(mdat << PORT_DEVSLP_MDAT_OFFSET) |
(deto << PORT_DEVSLP_DETO_OFFSET) |
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index ec6af1595062..4685bd10c473 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -125,6 +125,7 @@ config BT_HCIUART_LL
config BT_HCIUART_3WIRE
bool "Three-wire UART (H5) protocol support"
depends on BT_HCIUART
+ depends on BT_HCIUART_SERDEV
help
The HCI Three-wire UART Transport Layer makes it possible to
user the Bluetooth HCI over a serial port interface. The HCI
diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c
index 9506e8693c81..d8ef1147b344 100644
--- a/drivers/crypto/vmx/aes_cbc.c
+++ b/drivers/crypto/vmx/aes_cbc.c
@@ -111,24 +111,23 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc,
ret = crypto_blkcipher_encrypt(&fallback_desc, dst, src,
nbytes);
} else {
- preempt_disable();
- pagefault_disable();
- enable_kernel_altivec();
- enable_kernel_vsx();
-
blkcipher_walk_init(&walk, dst, src, nbytes);
ret = blkcipher_walk_virt(desc, &walk);
while ((nbytes = walk.nbytes)) {
+ preempt_disable();
+ pagefault_disable();
+ enable_kernel_vsx();
+ enable_kernel_altivec();
aes_p8_cbc_encrypt(walk.src.virt.addr,
walk.dst.virt.addr,
nbytes & AES_BLOCK_MASK,
&ctx->enc_key, walk.iv, 1);
+ pagefault_enable();
+ preempt_enable();
+
nbytes &= AES_BLOCK_SIZE - 1;
ret = blkcipher_walk_done(desc, &walk, nbytes);
}
-
- pagefault_enable();
- preempt_enable();
}

return ret;
@@ -152,24 +151,23 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc,
ret = crypto_blkcipher_decrypt(&fallback_desc, dst, src,
nbytes);
} else {
- preempt_disable();
- pagefault_disable();
- enable_kernel_altivec();
- enable_kernel_vsx();
-
blkcipher_walk_init(&walk, dst, src, nbytes);
ret = blkcipher_walk_virt(desc, &walk);
while ((nbytes = walk.nbytes)) {
+ preempt_disable();
+ pagefault_disable();
+ enable_kernel_vsx();
+ enable_kernel_altivec();
aes_p8_cbc_encrypt(walk.src.virt.addr,
walk.dst.virt.addr,
nbytes & AES_BLOCK_MASK,
&ctx->dec_key, walk.iv, 0);
+ pagefault_enable();
+ preempt_enable();
+
nbytes &= AES_BLOCK_SIZE - 1;
ret = blkcipher_walk_done(desc, &walk, nbytes);
}
-
- pagefault_enable();
- preempt_enable();
}

return ret;
diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 5536108aa9db..fe21734bbe5c 100644
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -495,9 +495,10 @@ err_irq_alloc_descs:

chip = chip_save;
err_gpiochip_add:
+ chip = chip_save;
while (--i >= 0) {
- chip--;
gpiochip_remove(&chip->gpio);
+ chip++;
}
kfree(chip_save);

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 896bf29776b0..fb2c1df4f588 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -591,4 +591,4 @@ static int __init tegra_gpio_init(void)
{
return platform_driver_register(&tegra_gpio_driver);
}
-postcore_initcall(tegra_gpio_init);
+subsys_initcall(tegra_gpio_init);
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 85f39cc3e276..47581c32b1e1 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -128,6 +128,7 @@

#define SBREG_BAR 0x10
#define SBREG_SMBCTRL 0xc6000c
+#define SBREG_SMBCTRL_DNV 0xcf000c

/* Host status bits for SMBPCISTS */
#define SMBPCISTS_INTS 0x08
@@ -1251,7 +1252,11 @@ static void i801_add_tco(struct i801_priv *priv)
spin_unlock(&p2sb_spinlock);

res = &tco_res[ICH_RES_MEM_OFF];
- res->start = (resource_size_t)base64_addr + SBREG_SMBCTRL;
+ if (pci_dev->device == PCI_DEVICE_ID_INTEL_DNV_SMBUS)
+ res->start = (resource_size_t)base64_addr + SBREG_SMBCTRL_DNV;
+ else
+ res->start = (resource_size_t)base64_addr + SBREG_SMBCTRL;
+
res->end = res->start + 3;
res->flags = IORESOURCE_MEM;

diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 0b20449e48cf..da9acec1a029 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -533,6 +533,7 @@ static void xiic_start_recv(struct xiic_i2c *i2c)
{
u8 rx_watermark;
struct i2c_msg *msg = i2c->rx_msg = i2c->tx_msg;
+ unsigned long flags;

/* Clear and enable Rx full interrupt. */
xiic_irq_clr_en(i2c, XIIC_INTR_RX_FULL_MASK | XIIC_INTR_TX_ERROR_MASK);
@@ -548,6 +549,7 @@ static void xiic_start_recv(struct xiic_i2c *i2c)
rx_watermark = IIC_RX_FIFO_DEPTH;
xiic_setreg8(i2c, XIIC_RFD_REG_OFFSET, rx_watermark - 1);

+ local_irq_save(flags);
if (!(msg->flags & I2C_M_NOSTART))
/* write the address */
xiic_setreg16(i2c, XIIC_DTR_REG_OFFSET,
@@ -558,6 +560,8 @@ static void xiic_start_recv(struct xiic_i2c *i2c)

xiic_setreg16(i2c, XIIC_DTR_REG_OFFSET,
msg->len | ((i2c->nmsgs == 1) ? XIIC_TX_DYN_STOP_MASK : 0));
+ local_irq_restore(flags);
+
if (i2c->nmsgs == 1)
/* very last, enable bus not busy as well */
xiic_irq_clr_en(i2c, XIIC_INTR_BNB_MASK);
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index d57a78ec7425..0f42411d6a79 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1280,9 +1280,16 @@ static bool cma_match_net_dev(const struct rdma_cm_id *id,
(addr->src_addr.ss_family == AF_IB ||
cma_protocol_roce_dev_port(id->device, port_num));

- return !addr->dev_addr.bound_dev_if ||
- (net_eq(dev_net(net_dev), addr->dev_addr.net) &&
- addr->dev_addr.bound_dev_if == net_dev->ifindex);
+ /*
+ * Net namespaces must match, and if the listner is listening
+ * on a specific netdevice than netdevice must match as well.
+ */
+ if (net_eq(dev_net(net_dev), addr->dev_addr.net) &&
+ (!!addr->dev_addr.bound_dev_if ==
+ (addr->dev_addr.bound_dev_if == net_dev->ifindex)))
+ return true;
+ else
+ return false;
}

static struct rdma_id_private *cma_find_listener(
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 88dfe3008cf4..be2f2521c1c5 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -1593,10 +1593,11 @@ static int mxt_get_object_table(struct mxt_data *data)
break;
case MXT_TOUCH_MULTI_T9:
data->multitouch = MXT_TOUCH_MULTI_T9;
+ /* Only handle messages from first T9 instance */
data->T9_reportid_min = min_id;
- data->T9_reportid_max = max_id;
- data->num_touchids = object->num_report_ids
- * mxt_obj_instances(object);
+ data->T9_reportid_max = min_id +
+ object->num_report_ids - 1;
+ data->num_touchids = object->num_report_ids;
break;
case MXT_SPT_MESSAGECOUNT_T44:
data->T44_address = object->start_address;
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index dfb868e2d129..624e7ff76166 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -44,7 +44,7 @@ struct ipmmu_vmsa_domain {
struct io_pgtable_ops *iop;

unsigned int context_id;
- spinlock_t lock; /* Protects mappings */
+ struct mutex mutex; /* Protects mappings */
};

struct ipmmu_vmsa_archdata {
@@ -464,7 +464,7 @@ static struct iommu_domain *ipmmu_domain_alloc(unsigned type)
if (!domain)
return NULL;

- spin_lock_init(&domain->lock);
+ mutex_init(&domain->mutex);

return &domain->io_domain;
}
@@ -488,7 +488,6 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain,
struct ipmmu_vmsa_archdata *archdata = dev->archdata.iommu;
struct ipmmu_vmsa_device *mmu = archdata->mmu;
struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
- unsigned long flags;
unsigned int i;
int ret = 0;

@@ -497,7 +496,7 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain,
return -ENXIO;
}

- spin_lock_irqsave(&domain->lock, flags);
+ mutex_lock(&domain->mutex);

if (!domain->mmu) {
/* The domain hasn't been used yet, initialize it. */
@@ -513,7 +512,7 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain,
ret = -EINVAL;
}

- spin_unlock_irqrestore(&domain->lock, flags);
+ mutex_unlock(&domain->mutex);

if (ret < 0)
return ret;
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index f9512bfa6c3c..0a41132ffba7 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -530,8 +530,9 @@ init_pmu(void)
int timeout;
struct adb_request req;

- out_8(&via[B], via[B] | TREQ); /* negate TREQ */
- out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
+ /* Negate TREQ. Set TACK to input and TREQ to output. */
+ out_8(&via[B], in_8(&via[B]) | TREQ);
+ out_8(&via[DIRB], (in_8(&via[DIRB]) | TREQ) & ~TACK);

pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
timeout = 100000;
@@ -1453,8 +1454,8 @@ pmu_sr_intr(void)
struct adb_request *req;
int bite = 0;

- if (via[B] & TREQ) {
- printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
+ if (in_8(&via[B]) & TREQ) {
+ printk(KERN_ERR "PMU: spurious SR intr (%x)\n", in_8(&via[B]));
out_8(&via[IFR], SR_INT);
return NULL;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d59b861764a1..0841d8f10a58 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4190,6 +4190,12 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
s->failed++;
if (rdev && !test_bit(Faulty, &rdev->flags))
do_recovery = 1;
+ else if (!rdev) {
+ rdev = rcu_dereference(
+ conf->disks[i].replacement);
+ if (rdev && !test_bit(Faulty, &rdev->flags))
+ do_recovery = 1;
+ }
}
}
if (test_bit(STRIPE_SYNCING, &sh->state)) {
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
index e4e4b22eebc9..4a0f076c91ba 100644
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -224,14 +224,13 @@ static int ti_tscadc_probe(struct platform_device *pdev)
* The TSC_ADC_SS controller design assumes the OCP clock is
* at least 6x faster than the ADC clock.
*/
- clk = clk_get(&pdev->dev, "adc_tsc_fck");
+ clk = devm_clk_get(&pdev->dev, "adc_tsc_fck");
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "failed to get TSC fck\n");
err = PTR_ERR(clk);
goto err_disable_clk;
}
clock_rate = clk_get_rate(clk);
- clk_put(clk);
tscadc->clk_div = clock_rate / ADC_CLK;

/* TSCADC_CLKDIV needs to be configured to the value minus 1 */
diff --git a/drivers/misc/mic/scif/scif_api.c b/drivers/misc/mic/scif/scif_api.c
index ddc9e4b08b5c..56efa9d18a9a 100644
--- a/drivers/misc/mic/scif/scif_api.c
+++ b/drivers/misc/mic/scif/scif_api.c
@@ -370,11 +370,10 @@ int scif_bind(scif_epd_t epd, u16 pn)
goto scif_bind_exit;
}
} else {
- pn = scif_get_new_port();
- if (!pn) {
- ret = -ENOSPC;
+ ret = scif_get_new_port();
+ if (ret < 0)
goto scif_bind_exit;
- }
+ pn = ret;
}

ep->state = SCIFEP_BOUND;
@@ -648,13 +647,12 @@ int __scif_connect(scif_epd_t epd, struct scif_port_id *dst, bool non_block)
err = -EISCONN;
break;
case SCIFEP_UNBOUND:
- ep->port.port = scif_get_new_port();
- if (!ep->port.port) {
- err = -ENOSPC;
- } else {
- ep->port.node = scif_info.nodeid;
- ep->conn_async_state = ASYNC_CONN_IDLE;
- }
+ err = scif_get_new_port();
+ if (err < 0)
+ break;
+ ep->port.port = err;
+ ep->port.node = scif_info.nodeid;
+ ep->conn_async_state = ASYNC_CONN_IDLE;
/* Fall through */
case SCIFEP_BOUND:
/*
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 71b64550b591..a1bca836e506 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -757,14 +757,14 @@ static int kim_probe(struct platform_device *pdev)
err = gpio_request(kim_gdata->nshutdown, "kim");
if (unlikely(err)) {
pr_err(" gpio %d request failed ", kim_gdata->nshutdown);
- return err;
+ goto err_sysfs_group;
}

/* Configure nShutdown GPIO as output=0 */
err = gpio_direction_output(kim_gdata->nshutdown, 0);
if (unlikely(err)) {
pr_err(" unable to configure gpio %d", kim_gdata->nshutdown);
- return err;
+ goto err_sysfs_group;
}
/* get reference of pdev for request_firmware
*/
diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index 518e2dec2aa2..5e9122cd3898 100644
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c
@@ -45,6 +45,7 @@
#include <linux/seq_file.h>
#include <linux/vmw_vmci_defs.h>
#include <linux/vmw_vmci_api.h>
+#include <linux/io.h>
#include <asm/hypervisor.h>

MODULE_AUTHOR("VMware, Inc.");
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index b3c1b8106a68..f4b3ce2b2bc3 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1597,8 +1597,10 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
cond_resched();

e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
- if (!e)
+ if (!e) {
+ err = -ENOMEM;
goto out_free;
+ }

e->pnum = aeb->pnum;
e->ec = aeb->ec;
@@ -1617,8 +1619,10 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
cond_resched();

e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
- if (!e)
+ if (!e) {
+ err = -ENOMEM;
goto out_free;
+ }

e->pnum = aeb->pnum;
e->ec = aeb->ec;
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index ea693bbf56d8..1c300259d70a 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2569,7 +2569,6 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
}

mvneta_start_dev(pp);
- mvneta_port_up(pp);

netdev_update_features(dev);

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index c69b0bdd891d..c2e110b2549b 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -371,7 +371,6 @@ struct cpsw_priv {
spinlock_t lock;
struct platform_device *pdev;
struct net_device *ndev;
- struct device_node *phy_node;
struct napi_struct napi_rx;
struct napi_struct napi_tx;
struct device *dev;
@@ -1165,8 +1164,8 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1 << slave_port, 0, 0, ALE_MCAST_FWD_2);

- if (priv->phy_node)
- slave->phy = of_phy_connect(priv->ndev, priv->phy_node,
+ if (slave->data->phy_node)
+ slave->phy = of_phy_connect(priv->ndev, slave->data->phy_node,
&cpsw_adjust_link, 0, slave->data->phy_if);
else
slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
@@ -1957,12 +1956,11 @@ static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
slave->port_vlan = data->dual_emac_res_vlan;
}

-static int cpsw_probe_dt(struct cpsw_priv *priv,
+static int cpsw_probe_dt(struct cpsw_platform_data *data,
struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct device_node *slave_node;
- struct cpsw_platform_data *data = &priv->data;
int i = 0, ret;
u32 prop;

@@ -2050,7 +2048,8 @@ static int cpsw_probe_dt(struct cpsw_priv *priv,
if (strcmp(slave_node->name, "slave"))
continue;

- priv->phy_node = of_parse_phandle(slave_node, "phy-handle", 0);
+ slave_data->phy_node = of_parse_phandle(slave_node,
+ "phy-handle", 0);
parp = of_get_property(slave_node, "phy_id", &lenp);
if (of_phy_is_fixed_link(slave_node)) {
struct device_node *phy_node;
@@ -2087,6 +2086,7 @@ static int cpsw_probe_dt(struct cpsw_priv *priv,
}
snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
PHY_ID_FMT, mdio->name, phyid);
+ put_device(&mdio->dev);
} else {
dev_err(&pdev->dev, "No slave[%d] phy_id or fixed-link property\n", i);
goto no_phy_slave;
@@ -2291,7 +2291,7 @@ static int cpsw_probe(struct platform_device *pdev)
/* Select default pin state */
pinctrl_pm_select_default_state(&pdev->dev);

- if (cpsw_probe_dt(priv, pdev)) {
+ if (cpsw_probe_dt(&priv->data, pdev)) {
dev_err(&pdev->dev, "cpsw: platform data missing\n");
ret = -ENODEV;
goto clean_runtime_disable_ret;
diff --git a/drivers/net/ethernet/ti/cpsw.h b/drivers/net/ethernet/ti/cpsw.h
index 442a7038e660..e50afd1b2eda 100644
--- a/drivers/net/ethernet/ti/cpsw.h
+++ b/drivers/net/ethernet/ti/cpsw.h
@@ -18,6 +18,7 @@
#include <linux/phy.h>

struct cpsw_slave_data {
+ struct device_node *phy_node;
char phy_id[MII_BUS_ID_SIZE];
int phy_if;
u8 mac_addr[ETH_ALEN];
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 6be315303d61..8ecb24186b7f 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -2108,6 +2108,7 @@ static int davinci_emac_remove(struct platform_device *pdev)
cpdma_ctlr_destroy(priv->dma);

unregister_netdev(ndev);
+ of_node_put(priv->phy_node);
free_netdev(ndev);

return 0;
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 916b9b12edd2..4644357d291a 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -2901,6 +2901,13 @@ static int ath10k_update_channel_list(struct ath10k *ar)
passive = channel->flags & IEEE80211_CHAN_NO_IR;
ch->passive = passive;

+ /* the firmware is ignoring the "radar" flag of the
+ * channel and is scanning actively using Probe Requests
+ * on "Radar detection"/DFS channels which are not
+ * marked as "available"
+ */
+ ch->passive |= ch->chan_radar;
+
ch->freq = channel->center_freq;
ch->band_center_freq1 = channel->center_freq;
ch->min_power = 0;
diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
index 02eea3c3b5d3..c72eb4464de9 100644
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
@@ -1424,6 +1424,11 @@ static struct sk_buff *ath10k_wmi_tlv_op_gen_init(struct ath10k *ar)
cfg->keep_alive_pattern_size = __cpu_to_le32(0);
cfg->max_tdls_concurrent_sleep_sta = __cpu_to_le32(1);
cfg->max_tdls_concurrent_buffer_sta = __cpu_to_le32(1);
+ cfg->wmi_send_separate = __cpu_to_le32(0);
+ cfg->num_ocb_vdevs = __cpu_to_le32(0);
+ cfg->num_ocb_channels = __cpu_to_le32(0);
+ cfg->num_ocb_schedules = __cpu_to_le32(0);
+ cfg->host_capab = __cpu_to_le32(0);

ath10k_wmi_put_host_mem_chunks(ar, chunks);

diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.h b/drivers/net/wireless/ath/ath10k/wmi-tlv.h
index ad655c44afdb..f5031f3965c5 100644
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.h
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.h
@@ -1209,6 +1209,11 @@ struct wmi_tlv_resource_config {
__le32 keep_alive_pattern_size;
__le32 max_tdls_concurrent_sleep_sta;
__le32 max_tdls_concurrent_buffer_sta;
+ __le32 wmi_send_separate;
+ __le32 num_ocb_vdevs;
+ __le32 num_ocb_channels;
+ __le32 num_ocb_schedules;
+ __le32 host_capab;
} __packed;

struct wmi_tlv_init_cmd {
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index 5466246c69b4..b78a2f3745f2 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -2045,6 +2045,7 @@ static int twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)

if (twa_initialize_device_extension(tw_dev)) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension");
+ retval = -ENOMEM;
goto out_free_device_extension;
}

@@ -2067,6 +2068,7 @@ static int twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
tw_dev->base_addr = ioremap(mem_addr, mem_len);
if (!tw_dev->base_addr) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap");
+ retval = -ENOMEM;
goto out_release_mem_region;
}

@@ -2074,8 +2076,10 @@ static int twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
TW_DISABLE_INTERRUPTS(tw_dev);

/* Initialize the card */
- if (twa_reset_sequence(tw_dev, 0))
+ if (twa_reset_sequence(tw_dev, 0)) {
+ retval = -ENOMEM;
goto out_iounmap;
+ }

/* Set host specific parameters */
if ((pdev->device == PCI_DEVICE_ID_3WARE_9650SE) ||
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
index f8374850f714..f0a5536a9ff5 100644
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -1600,6 +1600,7 @@ static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)

if (twl_initialize_device_extension(tw_dev)) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize device extension");
+ retval = -ENOMEM;
goto out_free_device_extension;
}

@@ -1614,6 +1615,7 @@ static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
tw_dev->base_addr = pci_iomap(pdev, 1, 0);
if (!tw_dev->base_addr) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap");
+ retval = -ENOMEM;
goto out_release_mem_region;
}

@@ -1623,6 +1625,7 @@ static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
/* Initialize the card */
if (twl_reset_sequence(tw_dev, 0)) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset failed during probe");
+ retval = -ENOMEM;
goto out_iounmap;
}

diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 14af38036287..308a4206b636 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -2278,6 +2278,7 @@ static int tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)

if (tw_initialize_device_extension(tw_dev)) {
printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension.");
+ retval = -ENOMEM;
goto out_free_device_extension;
}

@@ -2292,6 +2293,7 @@ static int tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
tw_dev->base_addr = pci_resource_start(pdev, 0);
if (!tw_dev->base_addr) {
printk(KERN_WARNING "3w-xxxx: Failed to get io address.");
+ retval = -ENOMEM;
goto out_release_mem_region;
}

diff --git a/drivers/staging/rts5208/rtsx_scsi.c b/drivers/staging/rts5208/rtsx_scsi.c
index 12a3893b98fd..ade29c4295b7 100644
--- a/drivers/staging/rts5208/rtsx_scsi.c
+++ b/drivers/staging/rts5208/rtsx_scsi.c
@@ -536,7 +536,7 @@ static int inquiry(struct scsi_cmnd *srb, struct rtsx_chip *chip)

if (sendbytes > 8) {
memcpy(buf, inquiry_buf, 8);
- memcpy(buf + 8, inquiry_string, sendbytes - 8);
+ strncpy(buf + 8, inquiry_string, sendbytes - 8);
if (pro_formatter_flag) {
/* Additional Length */
buf[4] = 0x33;
diff --git a/drivers/staging/rts5208/xd.c b/drivers/staging/rts5208/xd.c
index 10fea7bb8f30..3db4a2570b19 100644
--- a/drivers/staging/rts5208/xd.c
+++ b/drivers/staging/rts5208/xd.c
@@ -1252,7 +1252,7 @@ static int xd_copy_page(struct rtsx_chip *chip, u32 old_blk, u32 new_blk,
reg = 0;
rtsx_read_register(chip, XD_CTL, &reg);
if (reg & (XD_ECC1_ERROR | XD_ECC2_ERROR)) {
- wait_timeout(100);
+ mdelay(100);

if (detect_card_cd(chip,
XD_CARD) != STATUS_SUCCESS) {
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 21f888ac550e..7199bac67333 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -306,6 +306,7 @@ void __transport_register_session(
{
const struct target_core_fabric_ops *tfo = se_tpg->se_tpg_tfo;
unsigned char buf[PR_REG_ISID_LEN];
+ unsigned long flags;

se_sess->se_tpg = se_tpg;
se_sess->fabric_sess_ptr = fabric_sess_ptr;
@@ -342,7 +343,7 @@ void __transport_register_session(
se_sess->sess_bin_isid = get_unaligned_be64(&buf[0]);
}

- spin_lock_irq(&se_nacl->nacl_sess_lock);
+ spin_lock_irqsave(&se_nacl->nacl_sess_lock, flags);
/*
* The se_nacl->nacl_sess pointer will be set to the
* last active I_T Nexus for each struct se_node_acl.
@@ -351,7 +352,7 @@ void __transport_register_session(

list_add_tail(&se_sess->sess_acl_list,
&se_nacl->acl_sess_list);
- spin_unlock_irq(&se_nacl->nacl_sess_lock);
+ spin_unlock_irqrestore(&se_nacl->nacl_sess_lock, flags);
}
list_add_tail(&se_sess->sess_list, &se_tpg->tpg_sess_list);

diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 802eac7e561b..2b8f2e0a4224 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -1915,7 +1915,7 @@ static __init int register_PCI(int i, struct pci_dev *dev)
ByteIO_t UPCIRingInd = 0;

if (!dev || !pci_match_id(rocket_pci_ids, dev) ||
- pci_enable_device(dev))
+ pci_enable_device(dev) || i >= NUM_BOARDS)
return 0;

rcktpt_io_addr[i] = pci_resource_start(dev, 0);
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index bcc1fc027311..b9823eb9c195 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -833,8 +833,6 @@ int __uio_register_device(struct module *owner,
if (ret)
goto err_uio_dev_add_attributes;

- info->uio_dev = idev;
-
if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) {
/*
* Note that we deliberately don't use devm_request_irq
@@ -850,6 +848,7 @@ int __uio_register_device(struct module *owner,
goto err_request_irq;
}

+ info->uio_dev = idev;
return 0;

err_request_irq:
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 128a3c0a9286..9dbf1583bd7a 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3675,6 +3675,9 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev)
}

spin_lock_irqsave(&xhci->lock, flags);
+
+ virt_dev->udev = NULL;
+
/* Don't disable the slot if the host controller is dead. */
state = readl(&xhci->op_regs->status);
if (state == 0xffffffff || (xhci->xhc_state & XHCI_STATE_DYING) ||
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 502d3892d8a4..d71e7ad4d382 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -18,6 +18,7 @@
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/list.h>
+#include <linux/magic.h>

/* This is the range of ioctl() numbers we claim as ours */
#define AUTOFS_IOC_FIRST AUTOFS_IOC_READY
@@ -135,7 +136,8 @@ struct autofs_sb_info {

static inline struct autofs_sb_info *autofs4_sbi(struct super_block *sb)
{
- return (struct autofs_sb_info *)(sb->s_fs_info);
+ return sb->s_magic != AUTOFS_SUPER_MAGIC ?
+ NULL : (struct autofs_sb_info *)(sb->s_fs_info);
}

static inline struct autofs_info *autofs4_dentry_ino(struct dentry *dentry)
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index a3ae0b2aeb5a..1132fe71b312 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -18,7 +18,6 @@
#include <linux/pagemap.h>
#include <linux/parser.h>
#include <linux/bitops.h>
-#include <linux/magic.h>
#include "autofs_i.h"
#include <linux/module.h>

diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index ee44d346ea44..bfa1d31f79aa 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -381,6 +381,8 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
if (test_and_clear_bit(segno, free_i->free_segmap)) {
free_i->free_segments++;

+ if (IS_CURSEC(sbi, secno))
+ goto skip_free;
next = find_next_bit(free_i->free_segmap,
start_segno + sbi->segs_per_sec, start_segno);
if (next >= start_segno + sbi->segs_per_sec) {
@@ -388,6 +390,7 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
free_i->free_sections++;
}
}
+skip_free:
spin_unlock(&free_i->segmap_lock);
}

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 6cc67e1bbb41..2ffc53d0c9c7 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1079,12 +1079,17 @@ static int sanity_check_ckpt(struct f2fs_sb_info *sbi)
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
unsigned int main_segs, blocks_per_seg;
+ unsigned int sit_segs, nat_segs;
+ unsigned int sit_bitmap_size, nat_bitmap_size;
+ unsigned int log_blocks_per_seg;
int i;

total = le32_to_cpu(raw_super->segment_count);
fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
- fsmeta += le32_to_cpu(raw_super->segment_count_sit);
- fsmeta += le32_to_cpu(raw_super->segment_count_nat);
+ sit_segs = le32_to_cpu(raw_super->segment_count_sit);
+ fsmeta += sit_segs;
+ nat_segs = le32_to_cpu(raw_super->segment_count_nat);
+ fsmeta += nat_segs;
fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
fsmeta += le32_to_cpu(raw_super->segment_count_ssa);

@@ -1105,6 +1110,18 @@ static int sanity_check_ckpt(struct f2fs_sb_info *sbi)
return 1;
}

+ sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
+ nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
+ log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
+
+ if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
+ nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
+ f2fs_msg(sbi->sb, KERN_ERR,
+ "Wrong bitmap size: sit: %u, nat:%u",
+ sit_bitmap_size, nat_bitmap_size);
+ return 1;
+ }
+
if (unlikely(f2fs_cp_error(sbi))) {
f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
return 1;
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index e2e857affbf2..0647cb1ede56 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -911,16 +911,21 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r

if (hdr_arg.minorversion == 0) {
cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident);
- if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp))
+ if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) {
+ if (cps.clp)
+ nfs_put_client(cps.clp);
goto out_invalidcred;
+ }
}

cps.minorversion = hdr_arg.minorversion;
hdr_res.taglen = hdr_arg.taglen;
hdr_res.tag = hdr_arg.tag;
- if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0)
+ if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) {
+ if (cps.clp)
+ nfs_put_client(cps.clp);
return rpc_system_err;
-
+ }
while (status == 0 && nops != hdr_arg.nops) {
status = process_op(nops, rqstp, &xdr_in,
argp, &xdr_out, resp, &cps);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 36f4695aa604..ad2a081bac66 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -392,7 +392,7 @@ struct kioctx_table;
struct mm_struct {
struct vm_area_struct *mmap; /* list of VMAs */
struct rb_root mm_rb;
- u32 vmacache_seqnum; /* per-thread vmacache */
+ u64 vmacache_seqnum; /* per-thread vmacache */
#ifdef CONFIG_MMU
unsigned long (*get_unmapped_area) (struct file *filp,
unsigned long addr, unsigned long len,
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 725498cc5d30..b30540d6d125 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1454,7 +1454,7 @@ struct task_struct {

struct mm_struct *mm, *active_mm;
/* per-thread vma caching */
- u32 vmacache_seqnum;
+ u64 vmacache_seqnum;
struct vm_area_struct *vmacache[VMACACHE_SIZE];
#if defined(SPLIT_RSS_COUNTING)
struct task_rss_stat rss_stat;
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index 8ef3a61fdc74..fdac5800872d 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -88,7 +88,6 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
#ifdef CONFIG_DEBUG_VM_VMACACHE
VMACACHE_FIND_CALLS,
VMACACHE_FIND_HITS,
- VMACACHE_FULL_FLUSHES,
#endif
NR_VM_EVENT_ITEMS
};
diff --git a/include/linux/vmacache.h b/include/linux/vmacache.h
index c3fa0fd43949..4f58ff2dacd6 100644
--- a/include/linux/vmacache.h
+++ b/include/linux/vmacache.h
@@ -15,7 +15,6 @@ static inline void vmacache_flush(struct task_struct *tsk)
memset(tsk->vmacache, 0, sizeof(tsk->vmacache));
}

-extern void vmacache_flush_all(struct mm_struct *mm);
extern void vmacache_update(unsigned long addr, struct vm_area_struct *newvma);
extern struct vm_area_struct *vmacache_find(struct mm_struct *mm,
unsigned long addr);
@@ -29,10 +28,6 @@ extern struct vm_area_struct *vmacache_find_exact(struct mm_struct *mm,
static inline void vmacache_invalidate(struct mm_struct *mm)
{
mm->vmacache_seqnum++;
-
- /* deal with overflows */
- if (unlikely(mm->vmacache_seqnum == 0))
- vmacache_flush_all(mm);
}

#endif /* __LINUX_VMACACHE_H */
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index cd1629170103..08f47e0e9f8d 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -819,13 +819,13 @@ struct ethtool_rx_flow_spec {
static inline __u64 ethtool_get_flow_spec_ring(__u64 ring_cookie)
{
return ETHTOOL_RX_FLOW_SPEC_RING & ring_cookie;
-};
+}

static inline __u64 ethtool_get_flow_spec_ring_vf(__u64 ring_cookie)
{
return (ETHTOOL_RX_FLOW_SPEC_RING_VF & ring_cookie) >>
ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
-};
+}

/**
* struct ethtool_rxnfc - command to get or set RX flow classification rules
diff --git a/kernel/fork.c b/kernel/fork.c
index 37ec96fe739d..dd2f79ac0771 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1337,6 +1337,18 @@ static struct task_struct *copy_process(unsigned long clone_flags,
if (!p)
goto fork_out;

+ /*
+ * This _must_ happen before we call free_task(), i.e. before we jump
+ * to any of the bad_fork_* labels. This is to avoid freeing
+ * p->set_child_tid which is (ab)used as a kthread's data pointer for
+ * kernel threads (PF_KTHREAD).
+ */
+ p->set_child_tid = (clone_flags & CLONE_CHILD_SETTID) ? child_tidptr : NULL;
+ /*
+ * Clear TID on mm_release()?
+ */
+ p->clear_child_tid = (clone_flags & CLONE_CHILD_CLEARTID) ? child_tidptr : NULL;
+
ftrace_graph_init_task(p);

rt_mutex_init_task(p);
@@ -1498,11 +1510,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
}
}

- p->set_child_tid = (clone_flags & CLONE_CHILD_SETTID) ? child_tidptr : NULL;
- /*
- * Clear TID on mm_release()?
- */
- p->clear_child_tid = (clone_flags & CLONE_CHILD_CLEARTID) ? child_tidptr : NULL;
#ifdef CONFIG_BLOCK
p->plug = NULL;
#endif
diff --git a/kernel/locking/osq_lock.c b/kernel/locking/osq_lock.c
index 05a37857ab55..8d7047ecef4e 100644
--- a/kernel/locking/osq_lock.c
+++ b/kernel/locking/osq_lock.c
@@ -104,6 +104,19 @@ bool osq_lock(struct optimistic_spin_queue *lock)

prev = decode_cpu(old);
node->prev = prev;
+
+ /*
+ * osq_lock() unqueue
+ *
+ * node->prev = prev osq_wait_next()
+ * WMB MB
+ * prev->next = node next->prev = prev // unqueue-C
+ *
+ * Here 'node->prev' and 'next->prev' are the same variable and we need
+ * to ensure these stores happen in-order to avoid corrupting the list.
+ */
+ smp_wmb();
+
WRITE_ONCE(prev->next, node);

/*
diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c
index a4d4de05b2d1..1be33caf157d 100644
--- a/kernel/locking/rwsem-xadd.c
+++ b/kernel/locking/rwsem-xadd.c
@@ -510,6 +510,33 @@ struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
{
unsigned long flags;

+ /*
+ * __rwsem_down_write_failed_common(sem)
+ * rwsem_optimistic_spin(sem)
+ * osq_unlock(sem->osq)
+ * ...
+ * atomic_long_add_return(&sem->count)
+ *
+ * - VS -
+ *
+ * __up_write()
+ * if (atomic_long_sub_return_release(&sem->count) < 0)
+ * rwsem_wake(sem)
+ * osq_is_locked(&sem->osq)
+ *
+ * And __up_write() must observe !osq_is_locked() when it observes the
+ * atomic_long_add_return() in order to not miss a wakeup.
+ *
+ * This boils down to:
+ *
+ * [S.rel] X = 1 [RmW] r0 = (Y += 0)
+ * MB RMB
+ * [RmW] Y += 1 [L] r1 = X
+ *
+ * exists (r0=1 /\ r1=0)
+ */
+ smp_rmb();
+
/*
* If a spinner is present, it is not necessary to do the wakeup.
* Try to do wakeup only if the trylock succeeds to minimize
diff --git a/mm/debug.c b/mm/debug.c
index 668aa35191ca..689b6e911cae 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -168,7 +168,7 @@ EXPORT_SYMBOL(dump_vma);

void dump_mm(const struct mm_struct *mm)
{
- pr_emerg("mm %p mmap %p seqnum %d task_size %lu\n"
+ pr_emerg("mm %p mmap %p seqnum %llu task_size %lu\n"
#ifdef CONFIG_MMU
"get_unmapped_area %p\n"
#endif
@@ -198,7 +198,7 @@ void dump_mm(const struct mm_struct *mm)
#endif
"%s", /* This is here to hold the comma */

- mm, mm->mmap, mm->vmacache_seqnum, mm->task_size,
+ mm, mm->mmap, (long long) mm->vmacache_seqnum, mm->task_size,
#ifdef CONFIG_MMU
mm->get_unmapped_area,
#endif
diff --git a/mm/vmacache.c b/mm/vmacache.c
index fd09dc9c6812..9c8ff3d4eda9 100644
--- a/mm/vmacache.c
+++ b/mm/vmacache.c
@@ -5,44 +5,6 @@
#include <linux/mm.h>
#include <linux/vmacache.h>

-/*
- * Flush vma caches for threads that share a given mm.
- *
- * The operation is safe because the caller holds the mmap_sem
- * exclusively and other threads accessing the vma cache will
- * have mmap_sem held at least for read, so no extra locking
- * is required to maintain the vma cache.
- */
-void vmacache_flush_all(struct mm_struct *mm)
-{
- struct task_struct *g, *p;
-
- count_vm_vmacache_event(VMACACHE_FULL_FLUSHES);
-
- /*
- * Single threaded tasks need not iterate the entire
- * list of process. We can avoid the flushing as well
- * since the mm's seqnum was increased and don't have
- * to worry about other threads' seqnum. Current's
- * flush will occur upon the next lookup.
- */
- if (atomic_read(&mm->mm_users) == 1)
- return;
-
- rcu_read_lock();
- for_each_process_thread(g, p) {
- /*
- * Only flush the vmacache pointers as the
- * mm seqnum is already set and curr's will
- * be set upon invalidation when the next
- * lookup is done.
- */
- if (mm == p->mm)
- vmacache_flush(p);
- }
- rcu_read_unlock();
-}
-
/*
* This task may be accessing a foreign mm via (for example)
* get_user_pages()->find_vma(). The vmacache is task-local and this
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 1811f8e7ddf4..552e00b07196 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -774,7 +774,7 @@ static int hidp_setup_hid(struct hidp_session *session,
hid->version = req->version;
hid->country = req->country;

- strncpy(hid->name, req->name, sizeof(req->name) - 1);
+ strncpy(hid->name, req->name, sizeof(hid->name));

snprintf(hid->phys, sizeof(hid->phys), "%pMR",
&l2cap_pi(session->ctrl_sock->sk)->chan->src);
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 4f6c1862dfd2..6fe2b615518c 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -1763,7 +1763,7 @@ static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
if (itr->app.selector == app->selector &&
itr->app.protocol == app->protocol &&
itr->ifindex == ifindex &&
- (!prio || itr->app.priority == prio))
+ ((prio == -1) || itr->app.priority == prio))
return itr;
}

@@ -1798,7 +1798,8 @@ u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
u8 prio = 0;

spin_lock_bh(&dcb_lock);
- if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
+ itr = dcb_app_lookup(app, dev->ifindex, -1);
+ if (itr)
prio = itr->app.priority;
spin_unlock_bh(&dcb_lock);

@@ -1826,7 +1827,8 @@ int dcb_setapp(struct net_device *dev, struct dcb_app *new)

spin_lock_bh(&dcb_lock);
/* Search for existing match and replace */
- if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
+ itr = dcb_app_lookup(new, dev->ifindex, -1);
+ if (itr) {
if (new->priority)
itr->app.priority = new->priority;
else {
@@ -1859,7 +1861,8 @@ u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
u8 prio = 0;

spin_lock_bh(&dcb_lock);
- if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
+ itr = dcb_app_lookup(app, dev->ifindex, -1);
+ if (itr)
prio |= 1 << itr->app.priority;
spin_unlock_bh(&dcb_lock);

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 1f3c305df45d..b6e72af15237 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -876,7 +876,7 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
if (copy_from_user(&compat_tmp, user, sizeof(compat_tmp)) != 0)
return ERR_PTR(-EFAULT);

- strlcpy(info->name, compat_tmp.name, sizeof(info->name));
+ memcpy(info->name, compat_tmp.name, sizeof(info->name) - 1);
info->num_counters = compat_tmp.num_counters;
user += sizeof(compat_tmp);
} else
@@ -889,9 +889,9 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
if (copy_from_user(info, user, sizeof(*info)) != 0)
return ERR_PTR(-EFAULT);

- info->name[sizeof(info->name) - 1] = '\0';
user += sizeof(*info);
}
+ info->name[sizeof(info->name) - 1] = '\0';

size = sizeof(struct xt_counters);
size *= info->num_counters;
diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index e60c79de13e1..52f3c550abcc 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -348,27 +348,26 @@ static struct avc_xperms_decision_node
struct avc_xperms_decision_node *xpd_node;
struct extended_perms_decision *xpd;

- xpd_node = kmem_cache_zalloc(avc_xperms_decision_cachep,
- GFP_ATOMIC | __GFP_NOMEMALLOC);
+ xpd_node = kmem_cache_zalloc(avc_xperms_decision_cachep, GFP_NOWAIT);
if (!xpd_node)
return NULL;

xpd = &xpd_node->xpd;
if (which & XPERMS_ALLOWED) {
xpd->allowed = kmem_cache_zalloc(avc_xperms_data_cachep,
- GFP_ATOMIC | __GFP_NOMEMALLOC);
+ GFP_NOWAIT);
if (!xpd->allowed)
goto error;
}
if (which & XPERMS_AUDITALLOW) {
xpd->auditallow = kmem_cache_zalloc(avc_xperms_data_cachep,
- GFP_ATOMIC | __GFP_NOMEMALLOC);
+ GFP_NOWAIT);
if (!xpd->auditallow)
goto error;
}
if (which & XPERMS_DONTAUDIT) {
xpd->dontaudit = kmem_cache_zalloc(avc_xperms_data_cachep,
- GFP_ATOMIC | __GFP_NOMEMALLOC);
+ GFP_NOWAIT);
if (!xpd->dontaudit)
goto error;
}
@@ -396,8 +395,7 @@ static struct avc_xperms_node *avc_xperms_alloc(void)
{
struct avc_xperms_node *xp_node;

- xp_node = kmem_cache_zalloc(avc_xperms_cachep,
- GFP_ATOMIC|__GFP_NOMEMALLOC);
+ xp_node = kmem_cache_zalloc(avc_xperms_cachep, GFP_NOWAIT);
if (!xp_node)
return xp_node;
INIT_LIST_HEAD(&xp_node->xpd_head);
@@ -550,7 +548,7 @@ static struct avc_node *avc_alloc_node(void)
{
struct avc_node *node;

- node = kmem_cache_zalloc(avc_node_cachep, GFP_ATOMIC|__GFP_NOMEMALLOC);
+ node = kmem_cache_zalloc(avc_node_cachep, GFP_NOWAIT);
if (!node)
goto out;

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 3324f98c35f6..f6d4a1046e54 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -4019,7 +4019,8 @@ void snd_hda_bus_reset_codecs(struct hda_bus *bus)

list_for_each_codec(codec, bus) {
/* FIXME: maybe a better way needed for forced reset */
- cancel_delayed_work_sync(&codec->jackpoll_work);
+ if (current_work() != &codec->jackpoll_work.work)
+ cancel_delayed_work_sync(&codec->jackpoll_work);
#ifdef CONFIG_PM
if (hda_codec_is_power_on(codec)) {
hda_call_codec_suspend(codec);
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 90129accffbe..4341ed267d4e 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -29,7 +29,9 @@ static inline unsigned long long rdclock(void)
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}

+#ifndef MAX_NR_CPUS
#define MAX_NR_CPUS 1024
+#endif

extern const char *input_name;
extern bool perf_host, perf_guest;
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