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SubjectRe: Linux 4.14.142
diff --git a/Makefile b/Makefile
index eefd21f3d1ec..ccced427d9de 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
-SUBLEVEL = 141
+SUBLEVEL = 142
EXTRAVERSION =
NAME = Petit Gorille

diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index e14cec6bc339..2c6cce8e7cfd 100644
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -566,8 +566,10 @@ long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,

if (kvmppc_gpa_to_ua(vcpu->kvm,
tce & ~(TCE_PCI_READ | TCE_PCI_WRITE),
- &ua, NULL))
- return H_PARAMETER;
+ &ua, NULL)) {
+ ret = H_PARAMETER;
+ goto unlock_exit;
+ }

list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
ret = kvmppc_tce_iommu_map(vcpu->kvm,
diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c
index 648cf6c01348..23d6d1592f11 100644
--- a/arch/powerpc/kvm/book3s_64_vio_hv.c
+++ b/arch/powerpc/kvm/book3s_64_vio_hv.c
@@ -475,8 +475,10 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
ua = 0;
if (kvmppc_gpa_to_ua(vcpu->kvm,
tce & ~(TCE_PCI_READ | TCE_PCI_WRITE),
- &ua, NULL))
- return H_PARAMETER;
+ &ua, NULL)) {
+ ret = H_PARAMETER;
+ goto unlock_exit;
+ }

list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
ret = kvmppc_rm_tce_iommu_map(vcpu->kvm,
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index f8f9cfded97d..8199b7e4aff9 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1148,6 +1148,10 @@ void clear_local_APIC(void)
apic_write(APIC_LVT0, v | APIC_LVT_MASKED);
v = apic_read(APIC_LVT1);
apic_write(APIC_LVT1, v | APIC_LVT_MASKED);
+ if (!x2apic_enabled()) {
+ v = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
+ apic_write(APIC_LDR, v);
+ }
if (maxlvt >= 4) {
v = apic_read(APIC_LVTPC);
apic_write(APIC_LVTPC, v | APIC_LVT_MASKED);
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
index e12fbcfc9571..a527f2a712b4 100644
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -38,32 +38,12 @@ static int bigsmp_early_logical_apicid(int cpu)
return early_per_cpu(x86_cpu_to_apicid, cpu);
}

-static inline unsigned long calculate_ldr(int cpu)
-{
- unsigned long val, id;
-
- val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
- id = per_cpu(x86_bios_cpu_apicid, cpu);
- val |= SET_APIC_LOGICAL_ID(id);
-
- return val;
-}
-
/*
- * Set up the logical destination ID.
- *
- * Intel recommends to set DFR, LDR and TPR before enabling
- * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
- * document number 292116). So here it goes...
+ * bigsmp enables physical destination mode
+ * and doesn't use LDR and DFR
*/
static void bigsmp_init_apic_ldr(void)
{
- unsigned long val;
- int cpu = smp_processor_id();
-
- apic_write(APIC_DFR, APIC_DFR_FLAT);
- val = calculate_ldr(cpu);
- apic_write(APIC_LDR, val);
}

static void bigsmp_setup_apic_routing(void)
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 2a65ab291312..584cdd475bb3 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -652,11 +652,10 @@ static unsigned long ptrace_get_debugreg(struct task_struct *tsk, int n)
{
struct thread_struct *thread = &tsk->thread;
unsigned long val = 0;
- int index = n;

if (n < HBP_NUM) {
+ int index = array_index_nospec(n, HBP_NUM);
struct perf_event *bp = thread->ptrace_bps[index];
- index = array_index_nospec(index, HBP_NUM);

if (bp)
val = bp->hw.info.address;
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index b9a8f34b5e5a..7a87ef1f5b5e 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -518,9 +518,12 @@ struct uprobe_xol_ops {
void (*abort)(struct arch_uprobe *, struct pt_regs *);
};

-static inline int sizeof_long(void)
+static inline int sizeof_long(struct pt_regs *regs)
{
- return in_ia32_syscall() ? 4 : 8;
+ /*
+ * Check registers for mode as in_xxx_syscall() does not apply here.
+ */
+ return user_64bit_mode(regs) ? 8 : 4;
}

static int default_pre_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs)
@@ -531,9 +534,9 @@ static int default_pre_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs)

static int push_ret_address(struct pt_regs *regs, unsigned long ip)
{
- unsigned long new_sp = regs->sp - sizeof_long();
+ unsigned long new_sp = regs->sp - sizeof_long(regs);

- if (copy_to_user((void __user *)new_sp, &ip, sizeof_long()))
+ if (copy_to_user((void __user *)new_sp, &ip, sizeof_long(regs)))
return -EFAULT;

regs->sp = new_sp;
@@ -566,7 +569,7 @@ static int default_post_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs
long correction = utask->vaddr - utask->xol_vaddr;
regs->ip += correction;
} else if (auprobe->defparam.fixups & UPROBE_FIX_CALL) {
- regs->sp += sizeof_long(); /* Pop incorrect return address */
+ regs->sp += sizeof_long(regs); /* Pop incorrect return address */
if (push_ret_address(regs, utask->vaddr + auprobe->defparam.ilen))
return -ERESTART;
}
@@ -675,7 +678,7 @@ static int branch_post_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs)
* "call" insn was executed out-of-line. Just restore ->sp and restart.
* We could also restore ->ip and try to call branch_emulate_op() again.
*/
- regs->sp += sizeof_long();
+ regs->sp += sizeof_long(regs);
return -ERESTART;
}

@@ -966,7 +969,7 @@ bool arch_uprobe_skip_sstep(struct arch_uprobe *auprobe, struct pt_regs *regs)
unsigned long
arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs *regs)
{
- int rasize = sizeof_long(), nleft;
+ int rasize = sizeof_long(regs), nleft;
unsigned long orig_ret_vaddr = 0; /* clear high bits for 32-bit apps */

if (copy_from_user(&orig_ret_vaddr, (void __user *)regs->sp, rasize))
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 3aa0b8123c91..7b9ad9de4f37 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -209,6 +209,9 @@ static void recalculate_apic_map(struct kvm *kvm)
if (!apic_x2apic_mode(apic) && !new->phys_map[xapic_id])
new->phys_map[xapic_id] = apic;

+ if (!kvm_apic_sw_enabled(apic))
+ continue;
+
ldr = kvm_lapic_get_reg(apic, APIC_LDR);

if (apic_x2apic_mode(apic)) {
@@ -252,6 +255,8 @@ static inline void apic_set_spiv(struct kvm_lapic *apic, u32 val)
recalculate_apic_map(apic->vcpu->kvm);
} else
static_key_slow_inc(&apic_sw_disabled.key);
+
+ recalculate_apic_map(apic->vcpu->kvm);
}
}

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a620936d97cf..c502f2e106db 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5954,12 +5954,13 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
unsigned long rflags = kvm_x86_ops->get_rflags(vcpu);
toggle_interruptibility(vcpu, ctxt->interruptibility);
vcpu->arch.emulate_regs_need_sync_to_vcpu = false;
- kvm_rip_write(vcpu, ctxt->eip);
- if (r == EMULATE_DONE && ctxt->tf)
- kvm_vcpu_do_singlestep(vcpu, &r);
if (!ctxt->have_exception ||
- exception_type(ctxt->exception.vector) == EXCPT_TRAP)
+ exception_type(ctxt->exception.vector) == EXCPT_TRAP) {
+ kvm_rip_write(vcpu, ctxt->eip);
+ if (r == EMULATE_DONE && ctxt->tf)
+ kvm_vcpu_do_singlestep(vcpu, &r);
__kvm_set_rflags(vcpu, ctxt->eflags);
+ }

/*
* For STI, interrupts are shadowed; so KVM_REQ_EVENT will
diff --git a/drivers/auxdisplay/panel.c b/drivers/auxdisplay/panel.c
index 6911acd896d9..e30953ceb7df 100644
--- a/drivers/auxdisplay/panel.c
+++ b/drivers/auxdisplay/panel.c
@@ -1622,6 +1622,8 @@ static void panel_attach(struct parport *port)
return;

err_lcd_unreg:
+ if (scan_timer.function)
+ del_timer_sync(&scan_timer);
if (lcd.enabled)
charlcd_unregister(lcd.charlcd);
err_unreg_device:
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 21c1be1eb226..ed4e80779124 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -973,6 +973,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
}
blkif->nr_ring_pages = nr_grefs;

+ err = -ENOMEM;
for (i = 0; i < nr_grefs * XEN_BLKIF_REQS_PER_PAGE; i++) {
req = kzalloc(sizeof(*req), GFP_KERNEL);
if (!req)
@@ -995,7 +996,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
err = xen_blkif_map(ring, ring_ref, nr_grefs, evtchn);
if (err) {
xenbus_dev_fatal(dev, err, "mapping ring-ref port %u", evtchn);
- return err;
+ goto fail;
}

return 0;
@@ -1015,8 +1016,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
}
kfree(req);
}
- return -ENOMEM;
-
+ return err;
}

static int connect_ring(struct backend_info *be)
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index 18d10694dd2a..b119df4c0043 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -540,6 +540,10 @@ int ccp_dev_suspend(struct sp_device *sp, pm_message_t state)
unsigned long flags;
unsigned int i;

+ /* If there's no device there's nothing to do */
+ if (!ccp)
+ return 0;
+
spin_lock_irqsave(&ccp->cmd_lock, flags);

ccp->suspending = 1;
@@ -564,6 +568,10 @@ int ccp_dev_resume(struct sp_device *sp)
unsigned long flags;
unsigned int i;

+ /* If there's no device there's nothing to do */
+ if (!ccp)
+ return 0;
+
spin_lock_irqsave(&ccp->cmd_lock, flags);

ccp->suspending = 0;
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index c2b089af0420..90feb6a05e59 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -142,7 +142,7 @@ enum d40_events {
* when the DMA hw is powered off.
* TODO: Add save/restore of D40_DREG_GCC on dma40 v3 or later, if that works.
*/
-static u32 d40_backup_regs[] = {
+static __maybe_unused u32 d40_backup_regs[] = {
D40_DREG_LCPA,
D40_DREG_LCLA,
D40_DREG_PRMSE,
@@ -211,7 +211,7 @@ static u32 d40_backup_regs_v4b[] = {

#define BACKUP_REGS_SZ_V4B ARRAY_SIZE(d40_backup_regs_v4b)

-static u32 d40_backup_regs_chan[] = {
+static __maybe_unused u32 d40_backup_regs_chan[] = {
D40_CHAN_REG_SSCFG,
D40_CHAN_REG_SSELT,
D40_CHAN_REG_SSPTR,
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 373700c05a00..224fa1ef87ff 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -131,8 +131,8 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)


/* Enable extended register access */
- ast_enable_mmio(dev);
ast_open_key(ast);
+ ast_enable_mmio(dev);

/* Find out whether P2A works or whether to use device-tree */
ast_detect_config_mode(dev, &scu_rev);
@@ -576,6 +576,9 @@ void ast_driver_unload(struct drm_device *dev)
{
struct ast_private *ast = dev->dev_private;

+ /* enable standard VGA decode */
+ ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x04);
+
ast_release_firmware(dev);
kfree(ast->dp501_fw_addr);
ast_mode_fini(dev);
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 343867b182dd..a09fafa27082 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -600,7 +600,7 @@ static int ast_crtc_mode_set(struct drm_crtc *crtc,
return -EINVAL;
ast_open_key(ast);

- ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa1, 0xff, 0x04);
+ ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06);

ast_set_std_reg(crtc, adjusted_mode, &vbios_mode);
ast_set_crtc_reg(crtc, adjusted_mode, &vbios_mode);
diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
index f7d421359d56..c1d1ac51d1c2 100644
--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -46,7 +46,7 @@ void ast_enable_mmio(struct drm_device *dev)
{
struct ast_private *ast = dev->dev_private;

- ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa1, 0xff, 0x04);
+ ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06);
}


diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index acb857030951..1bb01905be8e 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -64,7 +64,12 @@ static int tfp410_get_modes(struct drm_connector *connector)

drm_mode_connector_update_edid_property(connector, edid);

- return drm_add_edid_modes(connector, edid);
+ ret = drm_add_edid_modes(connector, edid);
+
+ kfree(edid);
+
+ return ret;
+
fallback:
/* No EDID, fallback on the XGA standard modes */
ret = drm_add_modes_noedid(connector, 1920, 1200);
diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
index 5fe9f3f39467..e13ddd559f79 100644
--- a/drivers/gpu/drm/i915/i915_vgpu.c
+++ b/drivers/gpu/drm/i915/i915_vgpu.c
@@ -100,6 +100,9 @@ static struct _balloon_info_ bl_info;
static void vgt_deballoon_space(struct i915_ggtt *ggtt,
struct drm_mm_node *node)
{
+ if (!drm_mm_node_allocated(node))
+ return;
+
DRM_DEBUG_DRIVER("deballoon space: range [0x%llx - 0x%llx] %llu KiB.\n",
node->start,
node->start + node->size,
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index b0d70f943cec..56039897607c 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -189,6 +189,12 @@ static void tilcdc_fini(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;

+#ifdef CONFIG_CPU_FREQ
+ if (priv->freq_transition.notifier_call)
+ cpufreq_unregister_notifier(&priv->freq_transition,
+ CPUFREQ_TRANSITION_NOTIFIER);
+#endif
+
if (priv->crtc)
tilcdc_crtc_shutdown(priv->crtc);

@@ -204,12 +210,6 @@ static void tilcdc_fini(struct drm_device *dev)
drm_mode_config_cleanup(dev);
tilcdc_remove_external_device(dev);

-#ifdef CONFIG_CPU_FREQ
- if (priv->freq_transition.notifier_call)
- cpufreq_unregister_notifier(&priv->freq_transition,
- CPUFREQ_TRANSITION_NOTIFIER);
-#endif
-
if (priv->clk)
clk_put(priv->clk);

@@ -282,17 +282,6 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
goto init_failed;
}

-#ifdef CONFIG_CPU_FREQ
- priv->freq_transition.notifier_call = cpufreq_transition;
- ret = cpufreq_register_notifier(&priv->freq_transition,
- CPUFREQ_TRANSITION_NOTIFIER);
- if (ret) {
- dev_err(dev, "failed to register cpufreq notifier\n");
- priv->freq_transition.notifier_call = NULL;
- goto init_failed;
- }
-#endif
-
if (of_property_read_u32(node, "max-bandwidth", &priv->max_bandwidth))
priv->max_bandwidth = TILCDC_DEFAULT_MAX_BANDWIDTH;

@@ -369,6 +358,17 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
}
modeset_init(ddev);

+#ifdef CONFIG_CPU_FREQ
+ priv->freq_transition.notifier_call = cpufreq_transition;
+ ret = cpufreq_register_notifier(&priv->freq_transition,
+ CPUFREQ_TRANSITION_NOTIFIER);
+ if (ret) {
+ dev_err(dev, "failed to register cpufreq notifier\n");
+ priv->freq_transition.notifier_call = NULL;
+ goto init_failed;
+ }
+#endif
+
if (priv->is_componentized) {
ret = component_bind_all(dev, ddev);
if (ret < 0)
diff --git a/drivers/hwtracing/intel_th/pci.c b/drivers/hwtracing/intel_th/pci.c
index c001a37b7055..140b18d858e8 100644
--- a/drivers/hwtracing/intel_th/pci.c
+++ b/drivers/hwtracing/intel_th/pci.c
@@ -148,6 +148,11 @@ static const struct pci_device_id intel_th_pci_id_table[] = {
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa1a6),
.driver_data = (kernel_ulong_t)0,
},
+ {
+ /* Lewisburg PCH */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa226),
+ .driver_data = (kernel_ulong_t)0,
+ },
{
/* Gemini Lake */
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x318e),
@@ -183,6 +188,11 @@ static const struct pci_device_id intel_th_pci_id_table[] = {
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x45c5),
.driver_data = (kernel_ulong_t)&intel_th_2x,
},
+ {
+ /* Tiger Lake PCH */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa0a6),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
{ 0 },
};

diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c
index f4530b08b1e5..c592cef4e82c 100644
--- a/drivers/hwtracing/stm/core.c
+++ b/drivers/hwtracing/stm/core.c
@@ -1107,7 +1107,6 @@ int stm_source_register_device(struct device *parent,

err:
put_device(&src->dev);
- kfree(src);

return err;
}
diff --git a/drivers/i2c/busses/i2c-emev2.c b/drivers/i2c/busses/i2c-emev2.c
index d2e84480fbe9..dd97e5d9f49a 100644
--- a/drivers/i2c/busses/i2c-emev2.c
+++ b/drivers/i2c/busses/i2c-emev2.c
@@ -72,6 +72,7 @@ struct em_i2c_device {
struct completion msg_done;
struct clk *sclk;
struct i2c_client *slave;
+ int irq;
};

static inline void em_clear_set_bit(struct em_i2c_device *priv, u8 clear, u8 set, u8 reg)
@@ -342,6 +343,12 @@ static int em_i2c_unreg_slave(struct i2c_client *slave)

writeb(0, priv->base + I2C_OFS_SVA0);

+ /*
+ * Wait for interrupt to finish. New slave irqs cannot happen because we
+ * cleared the slave address and, thus, only extension codes will be
+ * detected which do not use the slave ptr.
+ */
+ synchronize_irq(priv->irq);
priv->slave = NULL;

return 0;
@@ -358,7 +365,7 @@ static int em_i2c_probe(struct platform_device *pdev)
{
struct em_i2c_device *priv;
struct resource *r;
- int irq, ret;
+ int ret;

priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -393,8 +400,8 @@ static int em_i2c_probe(struct platform_device *pdev)

em_i2c_reset(&priv->adap);

- irq = platform_get_irq(pdev, 0);
- ret = devm_request_irq(&pdev->dev, irq, em_i2c_irq_handler, 0,
+ priv->irq = platform_get_irq(pdev, 0);
+ ret = devm_request_irq(&pdev->dev, priv->irq, em_i2c_irq_handler, 0,
"em_i2c", priv);
if (ret)
goto err_clk;
@@ -404,7 +411,8 @@ static int em_i2c_probe(struct platform_device *pdev)
if (ret)
goto err_clk;

- dev_info(&pdev->dev, "Added i2c controller %d, irq %d\n", priv->adap.nr, irq);
+ dev_info(&pdev->dev, "Added i2c controller %d, irq %d\n", priv->adap.nr,
+ priv->irq);

return 0;

diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 174579d32e5f..4b81dc231b18 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -99,7 +99,7 @@
#define SB800_PIIX4_PORT_IDX_MASK 0x06
#define SB800_PIIX4_PORT_IDX_SHIFT 1

-/* On kerncz, SmBus0Sel is at bit 20:19 of PMx00 DecodeEn */
+/* On kerncz and Hudson2, SmBus0Sel is at bit 20:19 of PMx00 DecodeEn */
#define SB800_PIIX4_PORT_IDX_KERNCZ 0x02
#define SB800_PIIX4_PORT_IDX_MASK_KERNCZ 0x18
#define SB800_PIIX4_PORT_IDX_SHIFT_KERNCZ 3
@@ -359,18 +359,16 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev,

/* Find which register is used for port selection */
if (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD) {
- switch (PIIX4_dev->device) {
- case PCI_DEVICE_ID_AMD_KERNCZ_SMBUS:
+ if (PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS ||
+ (PIIX4_dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS &&
+ PIIX4_dev->revision >= 0x1F)) {
piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_KERNCZ;
piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK_KERNCZ;
piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT_KERNCZ;
- break;
- case PCI_DEVICE_ID_AMD_HUDSON2_SMBUS:
- default:
+ } else {
piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_ALT;
piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK;
piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT;
- break;
}
} else {
mutex_lock(&piix4_mutex_sb800);
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 3415733a9364..132c4a405bf8 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -144,6 +144,7 @@ struct rcar_i2c_priv {
enum dma_data_direction dma_direction;

struct reset_control *rstc;
+ int irq;
};

#define rcar_i2c_priv_to_dev(p) ((p)->adap.dev.parent)
@@ -813,9 +814,11 @@ static int rcar_unreg_slave(struct i2c_client *slave)

WARN_ON(!priv->slave);

+ /* disable irqs and ensure none is running before clearing ptr */
rcar_i2c_write(priv, ICSIER, 0);
rcar_i2c_write(priv, ICSCR, 0);

+ synchronize_irq(priv->irq);
priv->slave = NULL;

pm_runtime_put(rcar_i2c_priv_to_dev(priv));
@@ -866,7 +869,7 @@ static int rcar_i2c_probe(struct platform_device *pdev)
struct i2c_adapter *adap;
struct device *dev = &pdev->dev;
struct i2c_timings i2c_t;
- int irq, ret;
+ int ret;

priv = devm_kzalloc(dev, sizeof(struct rcar_i2c_priv), GFP_KERNEL);
if (!priv)
@@ -927,10 +930,10 @@ static int rcar_i2c_probe(struct platform_device *pdev)
pm_runtime_put(dev);


- irq = platform_get_irq(pdev, 0);
- ret = devm_request_irq(dev, irq, rcar_i2c_irq, 0, dev_name(dev), priv);
+ priv->irq = platform_get_irq(pdev, 0);
+ ret = devm_request_irq(dev, priv->irq, rcar_i2c_irq, 0, dev_name(dev), priv);
if (ret < 0) {
- dev_err(dev, "cannot get irq %d\n", irq);
+ dev_err(dev, "cannot get irq %d\n", priv->irq);
goto out_pm_disable;
}

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 9d1cebe7f6cb..c87764a4e212 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -684,7 +684,7 @@ static int __finalise_sg(struct device *dev, struct scatterlist *sg, int nents,
* - and wouldn't make the resulting output segment too long
*/
if (cur_len && !s_iova_off && (dma_addr & seg_mask) &&
- (cur_len + s_length <= max_len)) {
+ (max_len - cur_len >= s_length)) {
/* ...then concatenate it with the previous one */
cur_len += s_length;
} else {
diff --git a/drivers/misc/vmw_vmci/vmci_doorbell.c b/drivers/misc/vmw_vmci/vmci_doorbell.c
index b3fa738ae005..f005206d9033 100644
--- a/drivers/misc/vmw_vmci/vmci_doorbell.c
+++ b/drivers/misc/vmw_vmci/vmci_doorbell.c
@@ -318,7 +318,8 @@ int vmci_dbell_host_context_notify(u32 src_cid, struct vmci_handle handle)

entry = container_of(resource, struct dbell_entry, resource);
if (entry->run_delayed) {
- schedule_work(&entry->work);
+ if (!schedule_work(&entry->work))
+ vmci_resource_put(resource);
} else {
entry->notify_cb(entry->client_data);
vmci_resource_put(resource);
@@ -366,7 +367,8 @@ static void dbell_fire_entries(u32 notify_idx)
atomic_read(&dbell->active) == 1) {
if (dbell->run_delayed) {
vmci_resource_get(&dbell->resource);
- schedule_work(&dbell->work);
+ if (!schedule_work(&dbell->work))
+ vmci_resource_put(&dbell->resource);
} else {
dbell->notify_cb(dbell->client_data);
}
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index fe2ef52135b6..33975ec14b7e 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -1232,6 +1232,12 @@ int mmc_attach_sd(struct mmc_host *host)
goto err;
}

+ /*
+ * Some SD cards claims an out of spec VDD voltage range. Let's treat
+ * these bits as being in-valid and especially also bit7.
+ */
+ ocr &= ~0x7FFF;
+
rocr = mmc_select_voltage(host, ocr);

/*
diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 4e47ed6bc716..74af8cc4ef36 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -364,6 +364,9 @@ static int sdhci_at91_probe(struct platform_device *pdev)
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
pm_runtime_use_autosuspend(&pdev->dev);

+ /* HS200 is broken at this moment */
+ host->quirks2 = SDHCI_QUIRK2_BROKEN_HS200;
+
ret = sdhci_add_host(host);
if (ret)
goto pm_runtime_disable;
diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 23129d7b2678..c77e36526447 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -52,7 +52,7 @@
#define RX_HS_UNTERMINATED_ENABLE 0x00A6
#define RX_ENTER_HIBERN8 0x00A7
#define RX_BYPASS_8B10B_ENABLE 0x00A8
-#define RX_TERMINATION_FORCE_ENABLE 0x0089
+#define RX_TERMINATION_FORCE_ENABLE 0x00A9
#define RX_MIN_ACTIVATETIME_CAPABILITY 0x008F
#define RX_HIBERN8TIME_CAPABILITY 0x0092
#define RX_REFCLKFREQ 0x00EB
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 340f97404034..e3a44bea7bb7 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -711,12 +711,6 @@ static int _gadget_stop_activity(struct usb_gadget *gadget)
struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
unsigned long flags;

- spin_lock_irqsave(&ci->lock, flags);
- ci->gadget.speed = USB_SPEED_UNKNOWN;
- ci->remote_wakeup = 0;
- ci->suspended = 0;
- spin_unlock_irqrestore(&ci->lock, flags);
-
/* flush all endpoints */
gadget_for_each_ep(ep, gadget) {
usb_ep_fifo_flush(ep);
@@ -734,6 +728,12 @@ static int _gadget_stop_activity(struct usb_gadget *gadget)
ci->status = NULL;
}

+ spin_lock_irqsave(&ci->lock, flags);
+ ci->gadget.speed = USB_SPEED_UNKNOWN;
+ ci->remote_wakeup = 0;
+ ci->suspended = 0;
+ spin_unlock_irqrestore(&ci->lock, flags);
+
return 0;
}

@@ -1305,6 +1305,10 @@ static int ep_disable(struct usb_ep *ep)
return -EBUSY;

spin_lock_irqsave(hwep->lock, flags);
+ if (hwep->ci->gadget.speed == USB_SPEED_UNKNOWN) {
+ spin_unlock_irqrestore(hwep->lock, flags);
+ return 0;
+ }

/* only internal SW should disable ctrl endpts */

@@ -1394,6 +1398,10 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
return -EINVAL;

spin_lock_irqsave(hwep->lock, flags);
+ if (hwep->ci->gadget.speed == USB_SPEED_UNKNOWN) {
+ spin_unlock_irqrestore(hwep->lock, flags);
+ return 0;
+ }
retval = _ep_queue(ep, req, gfp_flags);
spin_unlock_irqrestore(hwep->lock, flags);
return retval;
@@ -1417,8 +1425,8 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
return -EINVAL;

spin_lock_irqsave(hwep->lock, flags);
-
- hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
+ if (hwep->ci->gadget.speed != USB_SPEED_UNKNOWN)
+ hw_ep_flush(hwep->ci, hwep->num, hwep->dir);

list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {
dma_pool_free(hwep->td_pool, node->ptr, node->dma);
@@ -1489,6 +1497,10 @@ static void ep_fifo_flush(struct usb_ep *ep)
}

spin_lock_irqsave(hwep->lock, flags);
+ if (hwep->ci->gadget.speed == USB_SPEED_UNKNOWN) {
+ spin_unlock_irqrestore(hwep->lock, flags);
+ return;
+ }

hw_ep_flush(hwep->ci, hwep->num, hwep->dir);

@@ -1557,6 +1569,10 @@ static int ci_udc_wakeup(struct usb_gadget *_gadget)
int ret = 0;

spin_lock_irqsave(&ci->lock, flags);
+ if (ci->gadget.speed == USB_SPEED_UNKNOWN) {
+ spin_unlock_irqrestore(&ci->lock, flags);
+ return 0;
+ }
if (!ci->remote_wakeup) {
ret = -EOPNOTSUPP;
goto out;
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 3e865dbf878c..a593cdfc897f 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -584,10 +584,20 @@ static int wdm_flush(struct file *file, fl_owner_t id)
{
struct wdm_device *desc = file->private_data;

- wait_event(desc->wait, !test_bit(WDM_IN_USE, &desc->flags));
+ wait_event(desc->wait,
+ /*
+ * needs both flags. We cannot do with one
+ * because resetting it would cause a race
+ * with write() yet we need to signal
+ * a disconnect
+ */
+ !test_bit(WDM_IN_USE, &desc->flags) ||
+ test_bit(WDM_DISCONNECTING, &desc->flags));

/* cannot dereference desc->intf if WDM_DISCONNECTING */
- if (desc->werr < 0 && !test_bit(WDM_DISCONNECTING, &desc->flags))
+ if (test_bit(WDM_DISCONNECTING, &desc->flags))
+ return -ENODEV;
+ if (desc->werr < 0)
dev_err(&desc->intf->dev, "Error in flush path: %d\n",
desc->werr);

@@ -955,8 +965,6 @@ static void wdm_disconnect(struct usb_interface *intf)
spin_lock_irqsave(&desc->iuspin, flags);
set_bit(WDM_DISCONNECTING, &desc->flags);
set_bit(WDM_READ, &desc->flags);
- /* to terminate pending flushes */
- clear_bit(WDM_IN_USE, &desc->flags);
spin_unlock_irqrestore(&desc->iuspin, flags);
wake_up_all(&desc->wait);
mutex_lock(&desc->rlock);
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index b805962f5154..75c42393b64b 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -2008,6 +2008,7 @@ void composite_disconnect(struct usb_gadget *gadget)
* disconnect callbacks?
*/
spin_lock_irqsave(&cdev->lock, flags);
+ cdev->suspended = 0;
if (cdev->config)
reset_config(cdev);
if (cdev->driver->disconnect)
diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index 25ba30329533..41b5baa1f43b 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -261,7 +261,7 @@ struct fsg_common;
struct fsg_common {
struct usb_gadget *gadget;
struct usb_composite_dev *cdev;
- struct fsg_dev *fsg, *new_fsg;
+ struct fsg_dev *fsg;
wait_queue_head_t io_wait;
wait_queue_head_t fsg_wait;

@@ -290,6 +290,7 @@ struct fsg_common {
unsigned int bulk_out_maxpacket;
enum fsg_state state; /* For exception handling */
unsigned int exception_req_tag;
+ void *exception_arg;

enum data_direction data_dir;
u32 data_size;
@@ -393,7 +394,8 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)

/* These routines may be called in process context or in_irq */

-static void raise_exception(struct fsg_common *common, enum fsg_state new_state)
+static void __raise_exception(struct fsg_common *common, enum fsg_state new_state,
+ void *arg)
{
unsigned long flags;

@@ -406,6 +408,7 @@ static void raise_exception(struct fsg_common *common, enum fsg_state new_state)
if (common->state <= new_state) {
common->exception_req_tag = common->ep0_req_tag;
common->state = new_state;
+ common->exception_arg = arg;
if (common->thread_task)
send_sig_info(SIGUSR1, SEND_SIG_FORCED,
common->thread_task);
@@ -413,6 +416,10 @@ static void raise_exception(struct fsg_common *common, enum fsg_state new_state)
spin_unlock_irqrestore(&common->lock, flags);
}

+static void raise_exception(struct fsg_common *common, enum fsg_state new_state)
+{
+ __raise_exception(common, new_state, NULL);
+}

/*-------------------------------------------------------------------------*/

@@ -2287,16 +2294,16 @@ static int do_set_interface(struct fsg_common *common, struct fsg_dev *new_fsg)
static int fsg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
{
struct fsg_dev *fsg = fsg_from_func(f);
- fsg->common->new_fsg = fsg;
- raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
+
+ __raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE, fsg);
return USB_GADGET_DELAYED_STATUS;
}

static void fsg_disable(struct usb_function *f)
{
struct fsg_dev *fsg = fsg_from_func(f);
- fsg->common->new_fsg = NULL;
- raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
+
+ __raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE, NULL);
}


@@ -2309,6 +2316,7 @@ static void handle_exception(struct fsg_common *common)
enum fsg_state old_state;
struct fsg_lun *curlun;
unsigned int exception_req_tag;
+ struct fsg_dev *new_fsg;

/*
* Clear the existing signals. Anything but SIGUSR1 is converted
@@ -2362,6 +2370,7 @@ static void handle_exception(struct fsg_common *common)
common->next_buffhd_to_fill = &common->buffhds[0];
common->next_buffhd_to_drain = &common->buffhds[0];
exception_req_tag = common->exception_req_tag;
+ new_fsg = common->exception_arg;
old_state = common->state;
common->state = FSG_STATE_NORMAL;

@@ -2415,8 +2424,8 @@ static void handle_exception(struct fsg_common *common)
break;

case FSG_STATE_CONFIG_CHANGE:
- do_set_interface(common, common->new_fsg);
- if (common->new_fsg)
+ do_set_interface(common, new_fsg);
+ if (new_fsg)
usb_composite_setup_continue(common->cdev);
break;

@@ -3007,8 +3016,7 @@ static void fsg_unbind(struct usb_configuration *c, struct usb_function *f)

DBG(fsg, "unbind\n");
if (fsg->common->fsg == fsg) {
- fsg->common->new_fsg = NULL;
- raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
+ __raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE, NULL);
/* FIXME: make interruptible or killable somehow? */
wait_event(common->fsg_wait, common->fsg != fsg);
}
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index 457cc6525abd..aa2103682808 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -1652,6 +1652,10 @@ static int fotg210_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
/* see what we found out */
temp = check_reset_complete(fotg210, wIndex, status_reg,
fotg210_readl(fotg210, status_reg));
+
+ /* restart schedule */
+ fotg210->command |= CMD_RUN;
+ fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command);
}

if (!(temp & (PORT_RESUME|PORT_RESET))) {
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index b4599aa428f3..4ea1530257e2 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -417,8 +417,7 @@ static void ohci_usb_reset (struct ohci_hcd *ohci)
* other cases where the next software may expect clean state from the
* "firmware". this is bus-neutral, unlike shutdown() methods.
*/
-static void
-ohci_shutdown (struct usb_hcd *hcd)
+static void _ohci_shutdown(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci;

@@ -434,6 +433,16 @@ ohci_shutdown (struct usb_hcd *hcd)
ohci->rh_state = OHCI_RH_HALTED;
}

+static void ohci_shutdown(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ohci->lock, flags);
+ _ohci_shutdown(hcd);
+ spin_unlock_irqrestore(&ohci->lock, flags);
+}
+
/*-------------------------------------------------------------------------*
* HC functions
*-------------------------------------------------------------------------*/
@@ -752,7 +761,7 @@ static void io_watchdog_func(unsigned long _ohci)
died:
usb_hc_died(ohci_to_hcd(ohci));
ohci_dump(ohci);
- ohci_shutdown(ohci_to_hcd(ohci));
+ _ohci_shutdown(ohci_to_hcd(ohci));
goto done;
} else {
/* No write back because the done queue was empty */
diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
index 544e03452877..08eea4c402ee 100644
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -113,7 +113,7 @@ static int xhci_rcar_is_gen2(struct device *dev)
return of_device_is_compatible(node, "renesas,xhci-r8a7790") ||
of_device_is_compatible(node, "renesas,xhci-r8a7791") ||
of_device_is_compatible(node, "renesas,xhci-r8a7793") ||
- of_device_is_compatible(node, "renensas,rcar-gen2-xhci");
+ of_device_is_compatible(node, "renesas,rcar-gen2-xhci");
}

static int xhci_rcar_is_gen3(struct device *dev)
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
index 1a6df40f8b53..8e0b12cc084a 100644
--- a/drivers/usb/storage/realtek_cr.c
+++ b/drivers/usb/storage/realtek_cr.c
@@ -50,7 +50,7 @@ MODULE_LICENSE("GPL");

static int auto_delink_en = 1;
module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
+MODULE_PARM_DESC(auto_delink_en, "auto delink mode (0=firmware, 1=software [default])");

#ifdef CONFIG_REALTEK_AUTOPM
static int ss_en = 1;
@@ -1009,12 +1009,15 @@ static int init_realtek_cr(struct us_data *us)
goto INIT_FAIL;
}

- if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
- CHECK_FW_VER(chip, 0x5901))
- SET_AUTO_DELINK(chip);
- if (STATUS_LEN(chip) == 16) {
- if (SUPPORT_AUTO_DELINK(chip))
+ if (CHECK_PID(chip, 0x0138) || CHECK_PID(chip, 0x0158) ||
+ CHECK_PID(chip, 0x0159)) {
+ if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
+ CHECK_FW_VER(chip, 0x5901))
SET_AUTO_DELINK(chip);
+ if (STATUS_LEN(chip) == 16) {
+ if (SUPPORT_AUTO_DELINK(chip))
+ SET_AUTO_DELINK(chip);
+ }
}
#ifdef CONFIG_REALTEK_AUTOPM
if (ss_en)
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 0fa88daed149..fb69cb64f7d4 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2119,7 +2119,7 @@ UNUSUAL_DEV( 0x14cd, 0x6600, 0x0201, 0x0201,
US_FL_IGNORE_RESIDUE ),

/* Reported by Michael Büsch <m@bues.ch> */
-UNUSUAL_DEV( 0x152d, 0x0567, 0x0114, 0x0116,
+UNUSUAL_DEV( 0x152d, 0x0567, 0x0114, 0x0117,
"JMicron",
"USB to ATA/ATAPI Bridge",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
index b339e0e67b4c..adb699145a07 100644
--- a/drivers/watchdog/bcm2835_wdt.c
+++ b/drivers/watchdog/bcm2835_wdt.c
@@ -252,6 +252,7 @@ module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");

+MODULE_ALIAS("platform:bcm2835-wdt");
MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
MODULE_DESCRIPTION("Driver for Broadcom BCM2835 watchdog timer");
MODULE_LICENSE("GPL");
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 89c03a507dd9..614ce1f8b4ac 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -400,15 +400,21 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr)
unsigned long bytes = 0;
struct nfs_direct_req *dreq = hdr->dreq;

- if (test_bit(NFS_IOHDR_REDO, &hdr->flags))
- goto out_put;
-
spin_lock(&dreq->lock);
- if (test_bit(NFS_IOHDR_ERROR, &hdr->flags) && (hdr->good_bytes == 0))
+ if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
dreq->error = hdr->error;
- else
+
+ if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) {
+ spin_unlock(&dreq->lock);
+ goto out_put;
+ }
+
+ if (hdr->good_bytes != 0)
nfs_direct_good_bytes(dreq, hdr);

+ if (test_bit(NFS_IOHDR_EOF, &hdr->flags))
+ dreq->error = 0;
+
spin_unlock(&dreq->lock);

while (!list_empty(&hdr->pages)) {
@@ -428,7 +434,7 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}

-static void nfs_read_sync_pgio_error(struct list_head *head)
+static void nfs_read_sync_pgio_error(struct list_head *head, int error)
{
struct nfs_page *req;

@@ -664,8 +670,7 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)

list_for_each_entry_safe(req, tmp, &reqs, wb_list) {
if (!nfs_pageio_add_request(&desc, req)) {
- nfs_list_remove_request(req);
- nfs_list_add_request(req, &failed);
+ nfs_list_move_request(req, &failed);
spin_lock(&cinfo.inode->i_lock);
dreq->flags = 0;
if (desc.pg_error < 0)
@@ -775,16 +780,19 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
bool request_commit = false;
struct nfs_page *req = nfs_list_entry(hdr->pages.next);

- if (test_bit(NFS_IOHDR_REDO, &hdr->flags))
- goto out_put;
-
nfs_init_cinfo_from_dreq(&cinfo, dreq);

spin_lock(&dreq->lock);

if (test_bit(NFS_IOHDR_ERROR, &hdr->flags))
dreq->error = hdr->error;
- if (dreq->error == 0) {
+
+ if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) {
+ spin_unlock(&dreq->lock);
+ goto out_put;
+ }
+
+ if (hdr->good_bytes != 0) {
nfs_direct_good_bytes(dreq, hdr);
if (nfs_write_need_commit(hdr)) {
if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES)
@@ -821,7 +829,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}

-static void nfs_write_sync_pgio_error(struct list_head *head)
+static void nfs_write_sync_pgio_error(struct list_head *head, int error)
{
struct nfs_page *req;

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 28b013d1d44a..132e568524df 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -768,8 +768,7 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc,
pageused = 0;
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
- nfs_list_remove_request(req);
- nfs_list_add_request(req, &hdr->pages);
+ nfs_list_move_request(req, &hdr->pages);

if (!last_page || last_page != req->wb_page) {
pageused++;
@@ -961,8 +960,7 @@ static int nfs_pageio_do_add_request(struct nfs_pageio_descriptor *desc,
}
if (!nfs_can_coalesce_requests(prev, req, desc))
return 0;
- nfs_list_remove_request(req);
- nfs_list_add_request(req, &mirror->pg_list);
+ nfs_list_move_request(req, &mirror->pg_list);
mirror->pg_count += req->wb_bytes;
return 1;
}
@@ -994,9 +992,8 @@ nfs_pageio_cleanup_request(struct nfs_pageio_descriptor *desc,
{
LIST_HEAD(head);

- nfs_list_remove_request(req);
- nfs_list_add_request(req, &head);
- desc->pg_completion_ops->error_cleanup(&head);
+ nfs_list_move_request(req, &head);
+ desc->pg_completion_ops->error_cleanup(&head, desc->pg_error);
}

/**
@@ -1132,7 +1129,8 @@ static void nfs_pageio_error_cleanup(struct nfs_pageio_descriptor *desc)

for (midx = 0; midx < desc->pg_mirror_count; midx++) {
mirror = &desc->pg_mirrors[midx];
- desc->pg_completion_ops->error_cleanup(&mirror->pg_list);
+ desc->pg_completion_ops->error_cleanup(&mirror->pg_list,
+ desc->pg_error);
}
}

@@ -1234,21 +1232,23 @@ static void nfs_pageio_complete_mirror(struct nfs_pageio_descriptor *desc,
int nfs_pageio_resend(struct nfs_pageio_descriptor *desc,
struct nfs_pgio_header *hdr)
{
- LIST_HEAD(failed);
+ LIST_HEAD(pages);

desc->pg_io_completion = hdr->io_completion;
desc->pg_dreq = hdr->dreq;
- while (!list_empty(&hdr->pages)) {
- struct nfs_page *req = nfs_list_entry(hdr->pages.next);
+ list_splice_init(&hdr->pages, &pages);
+ while (!list_empty(&pages)) {
+ struct nfs_page *req = nfs_list_entry(pages.next);

- nfs_list_remove_request(req);
if (!nfs_pageio_add_request(desc, req))
- nfs_list_add_request(req, &failed);
+ break;
}
nfs_pageio_complete(desc);
- if (!list_empty(&failed)) {
- list_move(&failed, &hdr->pages);
- return desc->pg_error < 0 ? desc->pg_error : -EIO;
+ if (!list_empty(&pages)) {
+ int err = desc->pg_error < 0 ? desc->pg_error : -EIO;
+ hdr->completion_ops->error_cleanup(&pages, err);
+ nfs_set_pgio_error(hdr, err, hdr->io_start);
+ return err;
}
return 0;
}
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 48d7277c60a9..09d5c282f50e 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -205,7 +205,7 @@ static void nfs_initiate_read(struct nfs_pgio_header *hdr,
}

static void
-nfs_async_read_error(struct list_head *head)
+nfs_async_read_error(struct list_head *head, int error)
{
struct nfs_page *req;

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 50ed3944d183..3c1e46f4bce3 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1397,20 +1397,27 @@ static void nfs_redirty_request(struct nfs_page *req)
nfs_release_request(req);
}

-static void nfs_async_write_error(struct list_head *head)
+static void nfs_async_write_error(struct list_head *head, int error)
{
struct nfs_page *req;

while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
+ if (nfs_error_is_fatal(error)) {
+ nfs_context_set_write_error(req->wb_context, error);
+ if (nfs_error_is_fatal_on_server(error)) {
+ nfs_write_error_remove_page(req);
+ continue;
+ }
+ }
nfs_redirty_request(req);
}
}

static void nfs_async_write_reschedule_io(struct nfs_pgio_header *hdr)
{
- nfs_async_write_error(&hdr->pages);
+ nfs_async_write_error(&hdr->pages, 0);
}

static const struct nfs_pgio_completion_ops nfs_async_write_completion_ops = {
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index e27572d30d97..ad69430fd0eb 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -164,6 +164,16 @@ nfs_list_add_request(struct nfs_page *req, struct list_head *head)
list_add_tail(&req->wb_list, head);
}

+/**
+ * nfs_list_move_request - Move a request to a new list
+ * @req: request
+ * @head: head of list into which to insert the request.
+ */
+static inline void
+nfs_list_move_request(struct nfs_page *req, struct list_head *head)
+{
+ list_move_tail(&req->wb_list, head);
+}

/**
* nfs_list_remove_request - Remove a request from its wb_list
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 6959968dc36a..373fb26b5fed 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1520,7 +1520,7 @@ struct nfs_commit_data {
};

struct nfs_pgio_completion_ops {
- void (*error_cleanup)(struct list_head *head);
+ void (*error_cleanup)(struct list_head *head, int);
void (*init_hdr)(struct nfs_pgio_header *hdr);
void (*completion)(struct nfs_pgio_header *hdr);
void (*reschedule_io)(struct nfs_pgio_header *hdr);
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 7994e569644e..785c4ef4e1bf 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1702,6 +1702,10 @@ static inline struct sk_buff *tcp_rtx_queue_tail(const struct sock *sk)
{
struct sk_buff *skb = tcp_send_head(sk);

+ /* empty retransmit queue, for example due to zero window */
+ if (skb == tcp_write_queue_head(sk))
+ return NULL;
+
return skb ? tcp_write_queue_prev(sk, skb) : tcp_write_queue_tail(sk);
}

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 7420f5f36094..10b3e3b22af6 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3184,6 +3184,14 @@ t_probe_next(struct seq_file *m, loff_t *pos)
hnd = &iter->probe_entry->hlist;

hash = iter->probe->ops.func_hash->filter_hash;
+
+ /*
+ * A probe being registered may temporarily have an empty hash
+ * and it's at the end of the func_probes list.
+ */
+ if (!hash || hash == EMPTY_HASH)
+ return NULL;
+
size = 1 << hash->size_bits;

retry:
@@ -4380,12 +4388,21 @@ register_ftrace_function_probe(char *glob, struct trace_array *tr,

mutex_unlock(&ftrace_lock);

+ /*
+ * Note, there's a small window here that the func_hash->filter_hash
+ * may be NULL or empty. Need to be carefule when reading the loop.
+ */
mutex_lock(&probe->ops.func_hash->regex_lock);

orig_hash = &probe->ops.func_hash->filter_hash;
old_hash = *orig_hash;
hash = alloc_and_copy_ftrace_hash(FTRACE_HASH_DEFAULT_BITS, old_hash);

+ if (!hash) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
ret = ftrace_match_records(hash, glob, strlen(glob));

/* Nothing found? */
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index c5317a7f05e9..3197de2a3896 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -2431,7 +2431,9 @@ struct zs_pool *zs_create_pool(const char *name)
if (!pool->name)
goto err;

+#ifdef CONFIG_COMPACTION
init_waitqueue_head(&pool->migration_wait);
+#endif

if (create_cache(pool))
goto err;
diff --git a/net/core/stream.c b/net/core/stream.c
index 1cff9c6270c6..31839fb06d88 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -120,7 +120,6 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
int err = 0;
long vm_wait = 0;
long current_timeo = *timeo_p;
- bool noblock = (*timeo_p ? false : true);
DEFINE_WAIT_FUNC(wait, woken_wake_function);

if (sk_stream_memory_free(sk))
@@ -133,11 +132,8 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)

if (sk->sk_err || (sk->sk_shutdown & SEND_SHUTDOWN))
goto do_error;
- if (!*timeo_p) {
- if (noblock)
- set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
- goto do_nonblock;
- }
+ if (!*timeo_p)
+ goto do_eagain;
if (signal_pending(current))
goto do_interrupted;
sk_clear_bit(SOCKWQ_ASYNC_NOSPACE, sk);
@@ -169,7 +165,13 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
do_error:
err = -EPIPE;
goto out;
-do_nonblock:
+do_eagain:
+ /* Make sure that whenever EAGAIN is returned, EPOLLOUT event can
+ * be generated later.
+ * When TCP receives ACK packets that make room, tcp_check_space()
+ * only calls tcp_new_space() if SOCK_NOSPACE is set.
+ */
+ set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
err = -EAGAIN;
goto out;
do_interrupted:
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 150dd2160cef..8168c667d91d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1459,6 +1459,11 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
if (is_multicast_ether_addr(mac))
return -EINVAL;

+ if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
+ sdata->vif.type == NL80211_IFTYPE_STATION &&
+ !sdata->u.mgd.associated)
+ return -EINVAL;
+
sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
if (!sta)
return -ENOMEM;
@@ -1466,10 +1471,6 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
sta->sta.tdls = true;

- if (sta->sta.tdls && sdata->vif.type == NL80211_IFTYPE_STATION &&
- !sdata->u.mgd.associated)
- return -EINVAL;
-
err = sta_apply_parameters(local, sta, params);
if (err) {
sta_info_free(local, sta);
diff --git a/net/smc/smc_tx.c b/net/smc/smc_tx.c
index 710ab3fbf607..ec9397ec2def 100644
--- a/net/smc/smc_tx.c
+++ b/net/smc/smc_tx.c
@@ -70,13 +70,11 @@ static int smc_tx_wait_memory(struct smc_sock *smc, int flags)
DEFINE_WAIT_FUNC(wait, woken_wake_function);
struct smc_connection *conn = &smc->conn;
struct sock *sk = &smc->sk;
- bool noblock;
long timeo;
int rc = 0;

/* similar to sk_stream_wait_memory */
timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
- noblock = timeo ? false : true;
add_wait_queue(sk_sleep(sk), &wait);
while (1) {
sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
@@ -91,8 +89,8 @@ static int smc_tx_wait_memory(struct smc_sock *smc, int flags)
break;
}
if (!timeo) {
- if (noblock)
- set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+ /* ensure EPOLLOUT is subsequently generated */
+ set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
rc = -EAGAIN;
break;
}
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index ebfbc3f1be42..376f08798169 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2252,7 +2252,7 @@ static void reg_process_pending_hints(void)

/* When last_request->processed becomes true this will be rescheduled */
if (lr && !lr->processed) {
- reg_process_hint(lr);
+ pr_debug("Pending regulatory request, waiting for it to be processed...\n");
return;
}

diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index cc5b4c25d6f1..92b0d4523a07 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1821,8 +1821,7 @@ static int snd_seq_ioctl_get_client_pool(struct snd_seq_client *client,
if (cptr->type == USER_CLIENT) {
info->input_pool = cptr->data.user.fifo_pool_size;
info->input_free = info->input_pool;
- if (cptr->data.user.fifo)
- info->input_free = snd_seq_unused_cells(cptr->data.user.fifo->pool);
+ info->input_free = snd_seq_fifo_unused_cells(cptr->data.user.fifo);
} else {
info->input_pool = 0;
info->input_free = 0;
diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c
index 72c0302a55d2..6a24732704fc 100644
--- a/sound/core/seq/seq_fifo.c
+++ b/sound/core/seq/seq_fifo.c
@@ -280,3 +280,20 @@ int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize)

return 0;
}
+
+/* get the number of unused cells safely */
+int snd_seq_fifo_unused_cells(struct snd_seq_fifo *f)
+{
+ unsigned long flags;
+ int cells;
+
+ if (!f)
+ return 0;
+
+ snd_use_lock_use(&f->use_lock);
+ spin_lock_irqsave(&f->lock, flags);
+ cells = snd_seq_unused_cells(f->pool);
+ spin_unlock_irqrestore(&f->lock, flags);
+ snd_use_lock_free(&f->use_lock);
+ return cells;
+}
diff --git a/sound/core/seq/seq_fifo.h b/sound/core/seq/seq_fifo.h
index 062c446e7867..5d38a0d7f0cd 100644
--- a/sound/core/seq/seq_fifo.h
+++ b/sound/core/seq/seq_fifo.h
@@ -68,5 +68,7 @@ int snd_seq_fifo_poll_wait(struct snd_seq_fifo *f, struct file *file, poll_table
/* resize pool in fifo */
int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize);

+/* get the number of unused cells safely */
+int snd_seq_fifo_unused_cells(struct snd_seq_fifo *f);

#endif
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index ff5206f5455d..42c2a3065b77 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1757,11 +1757,8 @@ static int soc_probe_link_dais(struct snd_soc_card *card,
}
}

- if (dai_link->dai_fmt) {
- ret = snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
- if (ret)
- return ret;
- }
+ if (dai_link->dai_fmt)
+ snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);

ret = soc_post_component_init(rtd, dai_link->name);
if (ret)
diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index f5614507a81c..896add5ffee3 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -552,6 +552,15 @@ int line6_init_pcm(struct usb_line6 *line6,
line6pcm->volume_monitor = 255;
line6pcm->line6 = line6;

+ spin_lock_init(&line6pcm->out.lock);
+ spin_lock_init(&line6pcm->in.lock);
+ line6pcm->impulse_period = LINE6_IMPULSE_DEFAULT_PERIOD;
+
+ line6->line6pcm = line6pcm;
+
+ pcm->private_data = line6pcm;
+ pcm->private_free = line6_cleanup_pcm;
+
line6pcm->max_packet_size_in =
usb_maxpacket(line6->usbdev,
usb_rcvisocpipe(line6->usbdev, ep_read), 0);
@@ -564,15 +573,6 @@ int line6_init_pcm(struct usb_line6 *line6,
return -EINVAL;
}

- spin_lock_init(&line6pcm->out.lock);
- spin_lock_init(&line6pcm->in.lock);
- line6pcm->impulse_period = LINE6_IMPULSE_DEFAULT_PERIOD;
-
- line6->line6pcm = line6pcm;
-
- pcm->private_data = line6pcm;
- pcm->private_free = line6_cleanup_pcm;
-
err = line6_create_audio_out_urbs(line6pcm);
if (err < 0)
return err;
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 3d93e33b3485..5d48f8e74c56 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -82,6 +82,7 @@ struct mixer_build {
unsigned char *buffer;
unsigned int buflen;
DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
+ DECLARE_BITMAP(termbitmap, MAX_ID_ELEMS);
struct usb_audio_term oterm;
const struct usbmix_name_map *map;
const struct usbmix_selector_map *selector_map;
@@ -716,15 +717,24 @@ static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm
* parse the source unit recursively until it reaches to a terminal
* or a branched unit.
*/
-static int check_input_term(struct mixer_build *state, int id,
+static int __check_input_term(struct mixer_build *state, int id,
struct usb_audio_term *term)
{
int err;
void *p1;
+ unsigned char *hdr;

memset(term, 0, sizeof(*term));
- while ((p1 = find_audio_control_unit(state, id)) != NULL) {
- unsigned char *hdr = p1;
+ for (;;) {
+ /* a loop in the terminal chain? */
+ if (test_and_set_bit(id, state->termbitmap))
+ return -EINVAL;
+
+ p1 = find_audio_control_unit(state, id);
+ if (!p1)
+ break;
+
+ hdr = p1;
term->id = id;
switch (hdr[2]) {
case UAC_INPUT_TERMINAL:
@@ -739,7 +749,7 @@ static int check_input_term(struct mixer_build *state, int id,

/* call recursively to verify that the
* referenced clock entity is valid */
- err = check_input_term(state, d->bCSourceID, term);
+ err = __check_input_term(state, d->bCSourceID, term);
if (err < 0)
return err;

@@ -771,7 +781,7 @@ static int check_input_term(struct mixer_build *state, int id,
case UAC2_CLOCK_SELECTOR: {
struct uac_selector_unit_descriptor *d = p1;
/* call recursively to retrieve the channel info */
- err = check_input_term(state, d->baSourceID[0], term);
+ err = __check_input_term(state, d->baSourceID[0], term);
if (err < 0)
return err;
term->type = d->bDescriptorSubtype << 16; /* virtual type */
@@ -818,6 +828,15 @@ static int check_input_term(struct mixer_build *state, int id,
return -ENODEV;
}

+
+static int check_input_term(struct mixer_build *state, int id,
+ struct usb_audio_term *term)
+{
+ memset(term, 0, sizeof(*term));
+ memset(state->termbitmap, 0, sizeof(state->termbitmap));
+ return __check_input_term(state, id, term);
+}
+
/*
* Feature Unit
*/
@@ -1700,6 +1719,7 @@ static int parse_audio_mixer_unit(struct mixer_build *state, int unitid,
int pin, ich, err;

if (desc->bLength < 11 || !(input_pins = desc->bNrInPins) ||
+ desc->bLength < sizeof(*desc) + desc->bNrInPins ||
!(num_outs = uac_mixer_unit_bNrChannels(desc))) {
usb_audio_err(state->chip,
"invalid MIXER UNIT descriptor %d\n",
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 62c9a503ae05..0ef215061fb5 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -1380,6 +1380,8 @@ int main(int argc, char *argv[])
daemonize = 0;
break;
case 'h':
+ print_usage(argv);
+ exit(0);
default:
print_usage(argv);
exit(EXIT_FAILURE);
diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c
index 34031a297f02..514d29966ac6 100644
--- a/tools/hv/hv_vss_daemon.c
+++ b/tools/hv/hv_vss_daemon.c
@@ -172,6 +172,8 @@ int main(int argc, char *argv[])
daemonize = 0;
break;
case 'h':
+ print_usage(argv);
+ exit(0);
default:
print_usage(argv);
exit(EXIT_FAILURE);
diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c
index 36194c666814..63c6b630174f 100644
--- a/virt/kvm/arm/vgic/vgic-mmio.c
+++ b/virt/kvm/arm/vgic/vgic-mmio.c
@@ -123,6 +123,12 @@ unsigned long vgic_mmio_read_pending(struct kvm_vcpu *vcpu,
return value;
}

+static bool is_vgic_v2_sgi(struct kvm_vcpu *vcpu, struct vgic_irq *irq)
+{
+ return (vgic_irq_is_sgi(irq->intid) &&
+ vcpu->kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V2);
+}
+
void vgic_mmio_write_spending(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len,
unsigned long val)
@@ -133,6 +139,12 @@ void vgic_mmio_write_spending(struct kvm_vcpu *vcpu,
for_each_set_bit(i, &val, len * 8) {
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, intid + i);

+ /* GICD_ISPENDR0 SGI bits are WI */
+ if (is_vgic_v2_sgi(vcpu, irq)) {
+ vgic_put_irq(vcpu->kvm, irq);
+ continue;
+ }
+
spin_lock(&irq->irq_lock);
irq->pending_latch = true;

@@ -151,6 +163,12 @@ void vgic_mmio_write_cpending(struct kvm_vcpu *vcpu,
for_each_set_bit(i, &val, len * 8) {
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, intid + i);

+ /* GICD_ICPENDR0 SGI bits are WI */
+ if (is_vgic_v2_sgi(vcpu, irq)) {
+ vgic_put_irq(vcpu->kvm, irq);
+ continue;
+ }
+
spin_lock(&irq->irq_lock);

irq->pending_latch = false;
diff --git a/virt/kvm/arm/vgic/vgic-v2.c b/virt/kvm/arm/vgic/vgic-v2.c
index a2273a5aaece..7fe39de1ee33 100644
--- a/virt/kvm/arm/vgic/vgic-v2.c
+++ b/virt/kvm/arm/vgic/vgic-v2.c
@@ -142,7 +142,10 @@ void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr)
if (vgic_irq_is_sgi(irq->intid)) {
u32 src = ffs(irq->source);

- BUG_ON(!src);
+ if (WARN_RATELIMIT(!src, "No SGI source for INTID %d\n",
+ irq->intid))
+ return;
+
val |= (src - 1) << GICH_LR_PHYSID_CPUID_SHIFT;
irq->source &= ~(1 << (src - 1));
if (irq->source)
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index 094f8ff8f7ba..084edc9dc553 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -124,7 +124,10 @@ void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr)
model == KVM_DEV_TYPE_ARM_VGIC_V2) {
u32 src = ffs(irq->source);

- BUG_ON(!src);
+ if (WARN_RATELIMIT(!src, "No SGI source for INTID %d\n",
+ irq->intid))
+ return;
+
val |= (src - 1) << GICH_LR_PHYSID_CPUID_SHIFT;
irq->source &= ~(1 << (src - 1));
if (irq->source)
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 9d4e01f10949..07ee8e4e00a2 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -199,6 +199,13 @@ static int vgic_irq_cmp(void *priv, struct list_head *a, struct list_head *b)
bool penda, pendb;
int ret;

+ /*
+ * list_sort may call this function with the same element when
+ * the list is fairly long.
+ */
+ if (unlikely(irqa == irqb))
+ return 0;
+
spin_lock(&irqa->irq_lock);
spin_lock_nested(&irqb->irq_lock, SINGLE_DEPTH_NESTING);

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