62 files changed, 550 insertions, 310 deletions

diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index 9854ff4279e0..11828e632532 100644
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -176,7 +176,6 @@ CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
 CONFIG_USB_DEVICEFS=y
 CONFIG_USB_SUSPEND=y
 CONFIG_USB_MON=y
-CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_WDM=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_LIBUSUAL=y
diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h
index f7b58609bad8..6227e9505c2d 100644
--- a/arch/arm/mach-omap2/clockdomain.h
+++ b/arch/arm/mach-omap2/clockdomain.h
@@ -31,12 +31,16 @@
  *
  * CLKDM_NO_AUTODEPS: Prevent "autodeps" from being added/removed from this
  *     clockdomain.  (Currently, this applies to OMAP3 clockdomains only.)
+ * CLKDM_ACTIVE_WITH_MPU: The PRCM guarantees that this clockdomain is
+ *     active whenever the MPU is active.  True for interconnects and
+ *     the WKUP clockdomains.
  */
 #define CLKDM_CAN_FORCE_SLEEP                   (1 << 0)
 #define CLKDM_CAN_FORCE_WAKEUP                  (1 << 1)
 #define CLKDM_CAN_ENABLE_AUTO                   (1 << 2)
 #define CLKDM_CAN_DISABLE_AUTO                  (1 << 3)
 #define CLKDM_NO_AUTODEPS                       (1 << 4)
+#define CLKDM_ACTIVE_WITH_MPU                   (1 << 5)
 
 #define CLKDM_CAN_HWSUP         (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO)
 #define CLKDM_CAN_SWSUP         (CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP)
diff --git a/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c b/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c
index 839145e1cfbe..4972219653ce 100644
--- a/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c
+++ b/arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c
@@ -88,4 +88,5 @@ struct clockdomain wkup_common_clkdm = {
         .name           = "wkup_clkdm",
         .pwrdm          = { .name = "wkup_pwrdm" },
         .dep_bit        = OMAP_EN_WKUP_SHIFT,
+        .flags          = CLKDM_ACTIVE_WITH_MPU,
 };
diff --git a/arch/arm/mach-omap2/clockdomains44xx_data.c b/arch/arm/mach-omap2/clockdomains44xx_data.c
index c53425847493..7f2133abe7d3 100644
--- a/arch/arm/mach-omap2/clockdomains44xx_data.c
+++ b/arch/arm/mach-omap2/clockdomains44xx_data.c
@@ -381,7 +381,7 @@ static struct clockdomain l4_wkup_44xx_clkdm = {
         .cm_inst          = OMAP4430_PRM_WKUP_CM_INST,
         .clkdm_offs       = OMAP4430_PRM_WKUP_CM_WKUP_CDOFFS,
         .dep_bit          = OMAP4430_L4WKUP_STATDEP_SHIFT,
-        .flags            = CLKDM_CAN_HWSUP,
+        .flags            = CLKDM_CAN_HWSUP | CLKDM_ACTIVE_WITH_MPU,
 };
 
 static struct clockdomain emu_sys_44xx_clkdm = {
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 773193670ea2..2d710f50fca2 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1124,15 +1124,18 @@ static struct omap_hwmod_addr_space * __init _find_mpu_rt_addr_space(struct omap
  * _enable_sysc - try to bring a module out of idle via OCP_SYSCONFIG
  * @oh: struct omap_hwmod *
  *
- * If module is marked as SWSUP_SIDLE, force the module out of slave
- * idle; otherwise, configure it for smart-idle.  If module is marked
- * as SWSUP_MSUSPEND, force the module out of master standby;
- * otherwise, configure it for smart-standby.  No return value.
+ * Ensure that the OCP_SYSCONFIG register for the IP block represented
+ * by @oh is set to indicate to the PRCM that the IP block is active.
+ * Usually this means placing the module into smart-idle mode and
+ * smart-standby, but if there is a bug in the automatic idle handling
+ * for the IP block, it may need to be placed into the force-idle or
+ * no-idle variants of these modes.  No return value.
  */
 static void _enable_sysc(struct omap_hwmod *oh)
 {
         u8 idlemode, sf;
         u32 v;
+        bool clkdm_act;
 
         if (!oh->class->sysc)
                 return;
@@ -1141,8 +1144,16 @@ static void _enable_sysc(struct omap_hwmod *oh)
         sf = oh->class->sysc->sysc_flags;
 
         if (sf & SYSC_HAS_SIDLEMODE) {
-                idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
-                        HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
+                clkdm_act = ((oh->clkdm &&
+                              oh->clkdm->flags & CLKDM_ACTIVE_WITH_MPU) ||
+                             (oh->_clk && oh->_clk->clkdm &&
+                              oh->_clk->clkdm->flags & CLKDM_ACTIVE_WITH_MPU));
+                if (clkdm_act && !(oh->class->sysc->idlemodes &
+                                   (SIDLE_SMART | SIDLE_SMART_WKUP)))
+                        idlemode = HWMOD_IDLEMODE_FORCE;
+                else
+                        idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
+                                HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
                 _set_slave_idlemode(oh, idlemode, &v);
         }
 
@@ -1208,8 +1219,13 @@ static void _idle_sysc(struct omap_hwmod *oh)
         sf = oh->class->sysc->sysc_flags;
 
         if (sf & SYSC_HAS_SIDLEMODE) {
-                idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
-                        HWMOD_IDLEMODE_FORCE : HWMOD_IDLEMODE_SMART;
+                /* XXX What about HWMOD_IDLEMODE_SMART_WKUP? */
+                if (oh->flags & HWMOD_SWSUP_SIDLE ||
+                    !(oh->class->sysc->idlemodes &
+                      (SIDLE_SMART | SIDLE_SMART_WKUP)))
+                        idlemode = HWMOD_IDLEMODE_FORCE;
+                else
+                        idlemode = HWMOD_IDLEMODE_SMART;
                 _set_slave_idlemode(oh, idlemode, &v);
         }
 
diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c
index e859fcdb3d58..fde0d23121dc 100644
--- a/arch/arm/mach-shmobile/platsmp.c
+++ b/arch/arm/mach-shmobile/platsmp.c
@@ -22,8 +22,13 @@
 #include <mach/common.h>
 #include <mach/emev2.h>
 
+#ifdef CONFIG_ARCH_SH73A0
 #define is_sh73a0() (machine_is_ag5evm() || machine_is_kota2() || \
                         of_machine_is_compatible("renesas,sh73a0"))
+#else
+#define is_sh73a0() (0)
+#endif
+
 #define is_r8a7779() machine_is_marzen()
 
 #ifdef CONFIG_ARCH_EMEV2
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 1509a3cb5833..4fd93f5c49ec 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -625,11 +625,6 @@ static struct platform_device *snowball_platform_devs[] __initdata = {
         &ab8500_device,
 };
 
-static struct platform_device *snowball_of_platform_devs[] __initdata = {
-        &snowball_led_dev,
-        &snowball_key_dev,
-};
-
 static void __init mop500_init_machine(void)
 {
         struct device *parent = NULL;
@@ -769,6 +764,11 @@ MACHINE_END
 
 #ifdef CONFIG_MACH_UX500_DT
 
+static struct platform_device *snowball_of_platform_devs[] __initdata = {
+        &snowball_led_dev,
+        &snowball_key_dev,
+};
+
 struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
         /* Requires DMA and call-back bindings. */
         OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
@@ -786,6 +786,8 @@ struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
         OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e000, "gpio.6", NULL),
         OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e080, "gpio.7", NULL),
         OF_DEV_AUXDATA("st,nomadik-gpio", 0xa03fe000, "gpio.8", NULL),
+        /* Requires device name bindings. */
+        OF_DEV_AUXDATA("stericsson,nmk_pinctrl", 0, "pinctrl-db8500", NULL),
         {},
 };
 
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index 741e71feca78..66e7f00884ab 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -63,8 +63,10 @@ static void __init ux500_timer_init(void)
 
         /* TODO: Once MTU has been DT:ed place code above into else. */
         if (of_have_populated_dt()) {
+#ifdef CONFIG_OF
                 np = of_find_matching_node(NULL, prcmu_timer_of_match);
                 if (!np)
+#endif
                         goto dt_fail;
 
                 tmp_base = of_iomap(np, 0);
diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c
index ea453532a33c..075d87acd12a 100644
--- a/arch/mips/pci/pci-lantiq.c
+++ b/arch/mips/pci/pci-lantiq.c
@@ -129,7 +129,7 @@ static int __devinit ltq_pci_startup(struct platform_device *pdev)
 
         /* setup reset gpio used by pci */
         reset_gpio = of_get_named_gpio(node, "gpio-reset", 0);
-        if (reset_gpio > 0)
+        if (gpio_is_valid(reset_gpio))
                 devm_gpio_request(&pdev->dev, reset_gpio, "pci-reset");
 
         /* enable auto-switching between PCI and EBU */
@@ -192,7 +192,7 @@ static int __devinit ltq_pci_startup(struct platform_device *pdev)
         ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_IEN) | 0x10, LTQ_EBU_PCC_IEN);
 
         /* toggle reset pin */
-        if (reset_gpio > 0) {
+        if (gpio_is_valid(reset_gpio)) {
                 __gpio_set_value(reset_gpio, 0);
                 wmb();
                 mdelay(1);
diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h
index 08251d6f6b11..ac519bbd42ff 100644
--- a/arch/mn10300/include/asm/thread_info.h
+++ b/arch/mn10300/include/asm/thread_info.h
@@ -123,7 +123,7 @@ static inline unsigned long current_stack_pointer(void)
 }
 
 #ifndef CONFIG_KGDB
-void arch_release_thread_info(struct thread_info *ti)
+void arch_release_thread_info(struct thread_info *ti);
 #endif
 #define get_thread_info(ti)     get_task_struct((ti)->task)
 #define put_thread_info(ti)     put_task_struct((ti)->task)
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
index 6eb75b80488c..0554ab062bdc 100644
--- a/arch/powerpc/include/asm/hw_irq.h
+++ b/arch/powerpc/include/asm/hw_irq.h
@@ -86,8 +86,8 @@ static inline bool arch_irqs_disabled(void)
 }
 
 #ifdef CONFIG_PPC_BOOK3E
-#define __hard_irq_enable()     asm volatile("wrteei 1" : : : "memory");
-#define __hard_irq_disable()    asm volatile("wrteei 0" : : : "memory");
+#define __hard_irq_enable()     asm volatile("wrteei 1" : : : "memory")
+#define __hard_irq_disable()    asm volatile("wrteei 0" : : : "memory")
 #else
 #define __hard_irq_enable()     __mtmsrd(local_paca->kernel_msr | MSR_EE, 1)
 #define __hard_irq_disable()    __mtmsrd(local_paca->kernel_msr, 1)
@@ -125,6 +125,8 @@ static inline bool arch_irq_disabled_regs(struct pt_regs *regs)
         return !regs->softe;
 }
 
+extern bool prep_irq_for_idle(void);
+
 #else /* CONFIG_PPC64 */
 
 #define SET_MSR_EE(x)   mtmsr(x)
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 1b415027ec0e..1f017bb7a7ce 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -229,7 +229,7 @@ notrace void arch_local_irq_restore(unsigned long en)
          */
         if (unlikely(irq_happened != PACA_IRQ_HARD_DIS))
                 __hard_irq_disable();
-#ifdef CONFIG_TRACE_IRQFLAG
+#ifdef CONFIG_TRACE_IRQFLAGS
         else {
                 /*
                  * We should already be hard disabled here. We had bugs
@@ -286,6 +286,52 @@ void notrace restore_interrupts(void)
                 __hard_irq_enable();
 }
 
+/*
+ * This is a helper to use when about to go into idle low-power
+ * when the latter has the side effect of re-enabling interrupts
+ * (such as calling H_CEDE under pHyp).
+ *
+ * You call this function with interrupts soft-disabled (this is
+ * already the case when ppc_md.power_save is called). The function
+ * will return whether to enter power save or just return.
+ *
+ * In the former case, it will have notified lockdep of interrupts
+ * being re-enabled and generally sanitized the lazy irq state,
+ * and in the latter case it will leave with interrupts hard
+ * disabled and marked as such, so the local_irq_enable() call
+ * in cpu_idle() will properly re-enable everything.
+ */
+bool prep_irq_for_idle(void)
+{
+        /*
+         * First we need to hard disable to ensure no interrupt
+         * occurs before we effectively enter the low power state
+         */
+        hard_irq_disable();
+
+        /*
+         * If anything happened while we were soft-disabled,
+         * we return now and do not enter the low power state.
+         */
+        if (lazy_irq_pending())
+                return false;
+
+        /* Tell lockdep we are about to re-enable */
+        trace_hardirqs_on();
+
+        /*
+         * Mark interrupts as soft-enabled and clear the
+         * PACA_IRQ_HARD_DIS from the pending mask since we
+         * are about to hard enable as well as a side effect
+         * of entering the low power state.
+         */
+        local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS;
+        local_paca->soft_enabled = 1;
+
+        /* Tell the caller to enter the low power state */
+        return true;
+}
+
 #endif /* CONFIG_PPC64 */
 
 int arch_show_interrupts(struct seq_file *p, int prec)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 6e8f677f5646..1e95556dc692 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -639,7 +639,7 @@ static void __init parse_drconf_memory(struct device_node *memory)
         unsigned int n, rc, ranges, is_kexec_kdump = 0;
         unsigned long lmb_size, base, size, sz;
         int nid;
-        struct assoc_arrays aa;
+        struct assoc_arrays aa = { .arrays = NULL };
 
         n = of_get_drconf_memory(memory, &dm);
         if (!n)
diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c
index efdacc829576..d17e98bc0c10 100644
--- a/arch/powerpc/platforms/cell/pervasive.c
+++ b/arch/powerpc/platforms/cell/pervasive.c
@@ -42,11 +42,9 @@ static void cbe_power_save(void)
 {
         unsigned long ctrl, thread_switch_control;
 
-        /*
-         * We need to hard disable interrupts, the local_irq_enable() done by
-         * our caller upon return will hard re-enable.
-         */
-        hard_irq_disable();
+        /* Ensure our interrupt state is properly tracked */
+        if (!prep_irq_for_idle())
+                return;
 
         ctrl = mfspr(SPRN_CTRLF);
 
@@ -81,6 +79,9 @@ static void cbe_power_save(void)
          */
         ctrl &= ~(CTRL_RUNLATCH | CTRL_TE);
         mtspr(SPRN_CTRLT, ctrl);
+
+        /* Re-enable interrupts in MSR */
+        __hard_irq_enable();
 }
 
 static int cbe_system_reset_exception(struct pt_regs *regs)
diff --git a/arch/powerpc/platforms/pseries/processor_idle.c b/arch/powerpc/platforms/pseries/processor_idle.c
index e61483e8e960..c71be66bd5dc 100644
--- a/arch/powerpc/platforms/pseries/processor_idle.c
+++ b/arch/powerpc/platforms/pseries/processor_idle.c
@@ -99,15 +99,18 @@ out:
 static void check_and_cede_processor(void)
 {
         /*
-         * Interrupts are soft-disabled at this point,
-         * but not hard disabled. So an interrupt might have
-         * occurred before entering NAP, and would be potentially
-         * lost (edge events, decrementer events, etc...) unless
-         * we first hard disable then check.
+         * Ensure our interrupt state is properly tracked,
+         * also checks if no interrupt has occurred while we
+         * were soft-disabled
          */
-        hard_irq_disable();
-        if (!lazy_irq_pending())
+        if (prep_irq_for_idle()) {
                 cede_processor();
+#ifdef CONFIG_TRACE_IRQFLAGS
+                /* Ensure that H_CEDE returns with IRQs on */
+                if (WARN_ON(!(mfmsr() & MSR_EE)))
+                        __hard_irq_enable();
+#endif
+        }
 }
 
 static int dedicated_cede_loop(struct cpuidle_device *dev,
diff --git a/arch/tile/kernel/backtrace.c b/arch/tile/kernel/backtrace.c
index 9092ce8aa6b4..f8b74ca83b92 100644
--- a/arch/tile/kernel/backtrace.c
+++ b/arch/tile/kernel/backtrace.c
@@ -14,6 +14,7 @@
 
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <asm/byteorder.h>
 #include <asm/backtrace.h>
 #include <asm/tile-desc.h>
 #include <arch/abi.h>
@@ -336,8 +337,12 @@ static void find_caller_pc_and_caller_sp(CallerLocation *location,
                                 bytes_to_prefetch / sizeof(tile_bundle_bits);
                 }
 
-                /* Decode the next bundle. */
-                bundle.bits = prefetched_bundles[next_bundle++];
+                /*
+                 * Decode the next bundle.
+                 * TILE always stores instruction bundles in little-endian
+                 * mode, even when the chip is running in big-endian mode.
+                 */
+                bundle.bits = le64_to_cpu(prefetched_bundles[next_bundle++]);
                 bundle.num_insns =
                         parse_insn_tile(bundle.bits, pc, bundle.insns);
                 num_info_ops = bt_get_info_ops(&bundle, info_operands);
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index 0ed85cac3231..615996a36bed 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -95,18 +95,6 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state, u8 flags)
                 return_ACPI_STATUS(status);
         }
 
-        if (sleep_state != ACPI_STATE_S5) {
-                /*
-                 * Disable BM arbitration. This feature is contained within an
-                 * optional register (PM2 Control), so ignore a BAD_ADDRESS
-                 * exception.
-                 */
-                status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 1);
-                if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) {
-                        return_ACPI_STATUS(status);
-                }
-        }
-
         /*
          * 1) Disable/Clear all GPEs
          * 2) Enable all wakeup GPEs
@@ -364,16 +352,6 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state, u8 flags)
                                     [ACPI_EVENT_POWER_BUTTON].
                                     status_register_id, ACPI_CLEAR_STATUS);
 
-        /*
-         * Enable BM arbitration. This feature is contained within an
-         * optional register (PM2 Control), so ignore a BAD_ADDRESS
-         * exception.
-         */
-        status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 0);
-        if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) {
-                return_ACPI_STATUS(status);
-        }
-
         acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
         return_ACPI_STATUS(status);
 }
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index c4067d0141f7..542f0c04b695 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -136,7 +136,7 @@ config GPIO_MPC8XXX
 
 config GPIO_MSM_V1
         tristate "Qualcomm MSM GPIO v1"
-        depends on GPIOLIB && ARCH_MSM
+        depends on GPIOLIB && ARCH_MSM && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50)
         help
           Say yes here to support the GPIO interface on ARM v6 based
           Qualcomm MSM chips.  Most of the pins on the MSM can be
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c
index 9e9947cb86a3..1077754f8289 100644
--- a/drivers/gpio/devres.c
+++ b/drivers/gpio/devres.c
@@ -98,6 +98,7 @@ int devm_gpio_request_one(struct device *dev, unsigned gpio,
 
         return 0;
 }
+EXPORT_SYMBOL(devm_gpio_request_one);
 
 /**
  *      devm_gpio_free - free an interrupt
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index c337143b18f8..c89c4c1e668d 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -398,10 +398,12 @@ static int __devinit mxc_gpio_probe(struct platform_device *pdev)
         writel(~0, port->base + GPIO_ISR);
 
         if (mxc_gpio_hwtype == IMX21_GPIO) {
-                /* setup one handler for all GPIO interrupts */
-                if (pdev->id == 0)
-                        irq_set_chained_handler(port->irq,
-                                                mx2_gpio_irq_handler);
+                /*
+                 * Setup one handler for all GPIO interrupts. Actually setting
+                 * the handler is needed only once, but doing it for every port
+                 * is more robust and easier.
+                 */
+                irq_set_chained_handler(port->irq, mx2_gpio_irq_handler);
         } else {
                 /* setup one handler for each entry */
                 irq_set_chained_handler(port->irq, mx3_gpio_irq_handler);
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index c4ed1722734c..4fbc208c32cf 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -174,12 +174,22 @@ static inline void _gpio_dbck_enable(struct gpio_bank *bank)
         if (bank->dbck_enable_mask && !bank->dbck_enabled) {
                 clk_enable(bank->dbck);
                 bank->dbck_enabled = true;
+
+                __raw_writel(bank->dbck_enable_mask,
+                             bank->base + bank->regs->debounce_en);
         }
 }
 
 static inline void _gpio_dbck_disable(struct gpio_bank *bank)
 {
         if (bank->dbck_enable_mask && bank->dbck_enabled) {
+                /*
+                 * Disable debounce before cutting it's clock. If debounce is
+                 * enabled but the clock is not, GPIO module seems to be unable
+                 * to detect events and generate interrupts at least on OMAP3.
+                 */
+                __raw_writel(0, bank->base + bank->regs->debounce_en);
+
                 clk_disable(bank->dbck);
                 bank->dbck_enabled = false;
         }
@@ -1081,7 +1091,6 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
         bank->is_mpuio = pdata->is_mpuio;
         bank->non_wakeup_gpios = pdata->non_wakeup_gpios;
         bank->loses_context = pdata->loses_context;
-        bank->get_context_loss_count = pdata->get_context_loss_count;
         bank->regs = pdata->regs;
 #ifdef CONFIG_OF_GPIO
         bank->chip.of_node = of_node_get(node);
@@ -1135,6 +1144,9 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
         omap_gpio_chip_init(bank);
         omap_gpio_show_rev(bank);
 
+        if (bank->loses_context)
+                bank->get_context_loss_count = pdata->get_context_loss_count;
+
         pm_runtime_put(bank->dev);
 
         list_add_tail(&bank->node, &omap_gpio_list);
diff --git a/drivers/gpio/gpio-sta2x11.c b/drivers/gpio/gpio-sta2x11.c
index 38416be8ba11..6064fb376e11 100644
--- a/drivers/gpio/gpio-sta2x11.c
+++ b/drivers/gpio/gpio-sta2x11.c
@@ -383,8 +383,9 @@ static int __devinit gsta_probe(struct platform_device *dev)
         }
         spin_lock_init(&chip->lock);
         gsta_gpio_setup(chip);
-        for (i = 0; i < GSTA_NR_GPIO; i++)
-                gsta_set_config(chip, i, gpio_pdata->pinconfig[i]);
+        if (gpio_pdata)
+                for (i = 0; i < GSTA_NR_GPIO; i++)
+                        gsta_set_config(chip, i, gpio_pdata->pinconfig[i]);
 
         /* 384 was used in previous code: be compatible for other drivers */
         err = irq_alloc_descs(-1, 384, GSTA_NR_GPIO, NUMA_NO_NODE);
diff --git a/drivers/gpio/gpio-tps65910.c b/drivers/gpio/gpio-tps65910.c
index c1ad2884f2ed..11f29c82253c 100644
--- a/drivers/gpio/gpio-tps65910.c
+++ b/drivers/gpio/gpio-tps65910.c
@@ -149,6 +149,9 @@ static int __devinit tps65910_gpio_probe(struct platform_device *pdev)
         tps65910_gpio->gpio_chip.set    = tps65910_gpio_set;
         tps65910_gpio->gpio_chip.get    = tps65910_gpio_get;
         tps65910_gpio->gpio_chip.dev = &pdev->dev;
+#ifdef CONFIG_OF_GPIO
+        tps65910_gpio->gpio_chip.of_node = tps65910->dev->of_node;
+#endif
         if (pdata && pdata->gpio_base)
                 tps65910_gpio->gpio_chip.base = pdata->gpio_base;
         else
diff --git a/drivers/gpio/gpio-wm8994.c b/drivers/gpio/gpio-wm8994.c
index 92ea5350dfe9..aa61ad2fcaaa 100644
--- a/drivers/gpio/gpio-wm8994.c
+++ b/drivers/gpio/gpio-wm8994.c
@@ -89,8 +89,11 @@ static int wm8994_gpio_direction_out(struct gpio_chip *chip,
         struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip);
         struct wm8994 *wm8994 = wm8994_gpio->wm8994;
 
+        if (value)
+                value = WM8994_GPN_LVL;
+
         return wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset,
-                               WM8994_GPN_DIR, 0);
+                               WM8994_GPN_DIR | WM8994_GPN_LVL, value);
 }
 
 static void wm8994_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c
index 61c9cf15fa52..1201a15784c3 100644
--- a/drivers/hwspinlock/hwspinlock_core.c
+++ b/drivers/hwspinlock/hwspinlock_core.c
@@ -345,7 +345,7 @@ int hwspin_lock_register(struct hwspinlock_device *bank, struct device *dev,
                 spin_lock_init(&hwlock->lock);
                 hwlock->bank = bank;
 
-                ret = hwspin_lock_register_single(hwlock, i);
+                ret = hwspin_lock_register_single(hwlock, base_id + i);
                 if (ret)
                         goto reg_failed;
         }
@@ -354,7 +354,7 @@ int hwspin_lock_register(struct hwspinlock_device *bank, struct device *dev,
 
 reg_failed:
         while (--i >= 0)
-                hwspin_lock_unregister_single(i);
+                hwspin_lock_unregister_single(base_id + i);
         return ret;
 }
 EXPORT_SYMBOL_GPL(hwspin_lock_register);
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index a2e418cba0ff..625626391f2d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -83,6 +83,8 @@ static struct iommu_ops amd_iommu_ops;
 static ATOMIC_NOTIFIER_HEAD(ppr_notifier);
 int amd_iommu_max_glx_val = -1;
 
+static struct dma_map_ops amd_iommu_dma_ops;
+
 /*
  * general struct to manage commands send to an IOMMU
  */
@@ -402,7 +404,7 @@ static void amd_iommu_stats_init(void)
                 return;
 
         de_fflush  = debugfs_create_bool("fullflush", 0444, stats_dir,
-                                         (u32 *)&amd_iommu_unmap_flush);
+                                         &amd_iommu_unmap_flush);
 
         amd_iommu_stats_add(&compl_wait);
         amd_iommu_stats_add(&cnt_map_single);
@@ -2267,6 +2269,13 @@ static int device_change_notifier(struct notifier_block *nb,
                 list_add_tail(&dma_domain->list, &iommu_pd_list);
                 spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
 
+                dev_data = get_dev_data(dev);
+
+                if (!dev_data->passthrough)
+                        dev->archdata.dma_ops = &amd_iommu_dma_ops;
+                else
+                        dev->archdata.dma_ops = &nommu_dma_ops;
+
                 break;
         case BUS_NOTIFY_DEL_DEVICE:
 
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 542024ba6dba..a33612f3206f 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -129,7 +129,7 @@ u16 amd_iommu_last_bdf;			/* largest PCI device id we have
                                            to handle */
 LIST_HEAD(amd_iommu_unity_map);         /* a list of required unity mappings
                                            we find in ACPI */
-bool amd_iommu_unmap_flush;             /* if true, flush on every unmap */
+u32 amd_iommu_unmap_flush;              /* if true, flush on every unmap */
 
 LIST_HEAD(amd_iommu_list);              /* list of all AMD IOMMUs in the
                                            system */
@@ -1641,6 +1641,8 @@ static int __init amd_iommu_init(void)
 
         amd_iommu_init_api();
 
+        x86_platform.iommu_shutdown = disable_iommus;
+
         if (iommu_pass_through)
                 goto out;
 
@@ -1649,8 +1651,6 @@ static int __init amd_iommu_init(void)
         else
                 printk(KERN_INFO "AMD-Vi: Lazy IO/TLB flushing enabled\n");
 
-        x86_platform.iommu_shutdown = disable_iommus;
-
 out:
         return ret;
 
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 24355559a2ad..c1b1d489817e 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -652,7 +652,7 @@ extern unsigned long *amd_iommu_pd_alloc_bitmap;
  * If true, the addresses will be flushed on unmap time, not when
  * they are reused
  */
-extern bool amd_iommu_unmap_flush;
+extern u32 amd_iommu_unmap_flush;
 
 /* Smallest number of PASIDs supported by any IOMMU in the system */
 extern u32 amd_iommu_max_pasids;
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index ecd679043d77..3f3d09d560ea 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -550,13 +550,13 @@ static int alloc_pdir(struct smmu_as *as)
                 return 0;
 
         as->pte_count = devm_kzalloc(smmu->dev,
-                     sizeof(as->pte_count[0]) * SMMU_PDIR_COUNT, GFP_KERNEL);
+                     sizeof(as->pte_count[0]) * SMMU_PDIR_COUNT, GFP_ATOMIC);
         if (!as->pte_count) {
                 dev_err(smmu->dev,
                         "failed to allocate smmu_device PTE cunters\n");
                 return -ENOMEM;
         }
-        as->pdir_page = alloc_page(GFP_KERNEL | __GFP_DMA);
+        as->pdir_page = alloc_page(GFP_ATOMIC | __GFP_DMA);
         if (!as->pdir_page) {
                 dev_err(smmu->dev,
                         "failed to allocate smmu_device page directory\n");
diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c
index 6c31e46a1fd2..b9c6f17eabb2 100644
--- a/drivers/media/video/gspca/sn9c20x.c
+++ b/drivers/media/video/gspca/sn9c20x.c
@@ -2070,10 +2070,13 @@ static int sd_start(struct gspca_dev *gspca_dev)
         set_gamma(gspca_dev, v4l2_ctrl_g_ctrl(sd->gamma));
         set_redblue(gspca_dev, v4l2_ctrl_g_ctrl(sd->blue),
                         v4l2_ctrl_g_ctrl(sd->red));
-        set_gain(gspca_dev, v4l2_ctrl_g_ctrl(sd->gain));
-        set_exposure(gspca_dev, v4l2_ctrl_g_ctrl(sd->exposure));
-        set_hvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip),
-                        v4l2_ctrl_g_ctrl(sd->vflip));
+        if (sd->gain)
+                set_gain(gspca_dev, v4l2_ctrl_g_ctrl(sd->gain));
+        if (sd->exposure)
+                set_exposure(gspca_dev, v4l2_ctrl_g_ctrl(sd->exposure));
+        if (sd->hflip)
+                set_hvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip),
+                                v4l2_ctrl_g_ctrl(sd->vflip));
 
         reg_w1(gspca_dev, 0x1007, 0x20);
         reg_w1(gspca_dev, 0x1061, 0x03);
@@ -2176,7 +2179,7 @@ static void sd_dqcallback(struct gspca_dev *gspca_dev)
         struct sd *sd = (struct sd *) gspca_dev;
         int avg_lum;
 
-        if (!v4l2_ctrl_g_ctrl(sd->autogain))
+        if (sd->autogain == NULL || !v4l2_ctrl_g_ctrl(sd->autogain))
                 return;
 
         avg_lum = atomic_read(&sd->avg_lum);
diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c
index 41f9a254b245..637bde8aca28 100644
--- a/drivers/media/video/mx2_camera.c
+++ b/drivers/media/video/mx2_camera.c
@@ -83,6 +83,7 @@
 #define CSICR1_INV_DATA         (1 << 3)
 #define CSICR1_INV_PCLK         (1 << 2)
 #define CSICR1_REDGE            (1 << 1)
+#define CSICR1_FMT_MASK         (CSICR1_PACK_DIR | CSICR1_SWAP16_EN)
 
 #define SHIFT_STATFF_LEVEL      22
 #define SHIFT_RXFF_LEVEL        19
@@ -230,6 +231,7 @@ struct mx2_prp_cfg {
         u32 src_pixel;
         u32 ch1_pixel;
         u32 irq_flags;
+        u32 csicr1;
 };
 
 /* prp resizing parameters */
@@ -330,6 +332,7 @@ static struct mx2_fmt_cfg mx27_emma_prp_table[] = {
                         .ch1_pixel      = 0x2ca00565, /* RGB565 */
                         .irq_flags      = PRP_INTR_RDERR | PRP_INTR_CH1WERR |
                                                 PRP_INTR_CH1FC | PRP_INTR_LBOVF,
+                        .csicr1         = 0,
                 }
         },
         {
@@ -343,6 +346,21 @@ static struct mx2_fmt_cfg mx27_emma_prp_table[] = {
                         .irq_flags      = PRP_INTR_RDERR | PRP_INTR_CH2WERR |
                                         PRP_INTR_CH2FC | PRP_INTR_LBOVF |
                                         PRP_INTR_CH2OVF,
+                        .csicr1         = CSICR1_PACK_DIR,
+                }
+        },
+        {
+                .in_fmt         = V4L2_MBUS_FMT_UYVY8_2X8,
+                .out_fmt        = V4L2_PIX_FMT_YUV420,
+                .cfg            = {
+                        .channel        = 2,
+                        .in_fmt         = PRP_CNTL_DATA_IN_YUV422,
+                        .out_fmt        = PRP_CNTL_CH2_OUT_YUV420,
+                        .src_pixel      = 0x22000888, /* YUV422 (YUYV) */
+                        .irq_flags      = PRP_INTR_RDERR | PRP_INTR_CH2WERR |
+                                        PRP_INTR_CH2FC | PRP_INTR_LBOVF |
+                                        PRP_INTR_CH2OVF,
+                        .csicr1         = CSICR1_SWAP16_EN,
                 }
         },
 };
@@ -1015,14 +1033,14 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
                 return ret;
         }
 
+        csicr1 = (csicr1 & ~CSICR1_FMT_MASK) | pcdev->emma_prp->cfg.csicr1;
+
         if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
                 csicr1 |= CSICR1_REDGE;
         if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
                 csicr1 |= CSICR1_SOF_POL;
         if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
                 csicr1 |= CSICR1_HSYNC_POL;
-        if (pcdev->platform_flags & MX2_CAMERA_SWAP16)
-                csicr1 |= CSICR1_SWAP16_EN;
         if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC)
                 csicr1 |= CSICR1_EXT_VSYNC;
         if (pcdev->platform_flags & MX2_CAMERA_CCIR)
@@ -1033,8 +1051,6 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
                 csicr1 |= CSICR1_GCLK_MODE;
         if (pcdev->platform_flags & MX2_CAMERA_INV_DATA)
                 csicr1 |= CSICR1_INV_DATA;
-        if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB)
-                csicr1 |= CSICR1_PACK_DIR;
 
         pcdev->csicr1 = csicr1;
 
@@ -1109,7 +1125,8 @@ static int mx2_camera_get_formats(struct soc_camera_device *icd,
                 return 0;
         }
 
-        if (code == V4L2_MBUS_FMT_YUYV8_2X8) {
+        if (code == V4L2_MBUS_FMT_YUYV8_2X8 ||
+            code == V4L2_MBUS_FMT_UYVY8_2X8) {
                 formats++;
                 if (xlate) {
                         /*
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 7de13891e49e..783fcd7365bc 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -1147,7 +1147,7 @@ static int mei_pci_resume(struct device *device)
                 err = request_threaded_irq(pdev->irq,
                         NULL,
                         mei_interrupt_thread_handler,
-                        0, mei_driver_name, dev);
+                        IRQF_ONESHOT, mei_driver_name, dev);
         else
                 err = request_threaded_irq(pdev->irq,
                         mei_interrupt_quick_handler,
diff --git a/drivers/of/base.c b/drivers/of/base.c
index eada3f4ef801..d9bfd49b1935 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -511,22 +511,6 @@ out:
 }
 EXPORT_SYMBOL(of_find_node_with_property);
 
-static const struct of_device_id *of_match_compat(const struct of_device_id *matches,
-                                                  const char *compat)
-{
-        while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
-                const char *cp = matches->compatible;
-                int len = strlen(cp);
-
-                if (len > 0 && of_compat_cmp(compat, cp, len) == 0)
-                        return matches;
-
-                matches++;
-        }
-
-        return NULL;
-}
-
 /**
  * of_match_node - Tell if an device_node has a matching of_match structure
  *      @matches:       array of of device match structures to search in
@@ -537,18 +521,9 @@ static const struct of_device_id *of_match_compat(const struct of_device_id *mat
 const struct of_device_id *of_match_node(const struct of_device_id *matches,
                                          const struct device_node *node)
 {
-        struct property *prop;
-        const char *cp;
-
         if (!matches)
                 return NULL;
 
-        of_property_for_each_string(node, "compatible", prop, cp) {
-                const struct of_device_id *match = of_match_compat(matches, cp);
-                if (match)
-                        return match;
-        }
-
         while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
                 int match = 1;
                 if (matches->name[0])
@@ -557,7 +532,10 @@ const struct of_device_id *of_match_node(const struct of_device_id *matches,
                 if (matches->type[0])
                         match &= node->type
                                 && !strcmp(matches->type, node->type);
-                if (match && !matches->compatible[0])
+                if (matches->compatible[0])
+                        match &= of_device_is_compatible(node,
+                                                matches->compatible);
+                if (match)
                         return matches;
                 matches++;
         }
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 3132ea068d95..e44f8c2d239d 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -317,10 +317,9 @@ static const struct of_dev_auxdata *of_dev_lookup(const struct of_dev_auxdata *l
         for(; lookup->compatible != NULL; lookup++) {
                 if (!of_device_is_compatible(np, lookup->compatible))
                         continue;
-                if (of_address_to_resource(np, 0, &res))
-                        continue;
-                if (res.start != lookup->phys_addr)
-                        continue;
+                if (!of_address_to_resource(np, 0, &res))
+                        if (res.start != lookup->phys_addr)
+                                continue;
                 pr_debug("%s: devname=%s\n", np->full_name, lookup->name);
                 return lookup;
         }
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index bf0cee629b60..099f46cd8e87 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -748,6 +748,18 @@ static int pci_pm_suspend_noirq(struct device *dev)
 
         pci_pm_set_unknown_state(pci_dev);
 
+        /*
+         * Some BIOSes from ASUS have a bug: If a USB EHCI host controller's
+         * PCI COMMAND register isn't 0, the BIOS assumes that the controller
+         * hasn't been quiesced and tries to turn it off.  If the controller
+         * is already in D3, this can hang or cause memory corruption.
+         *
+         * Since the value of the COMMAND register doesn't matter once the
+         * device has been suspended, we can safely set it to 0 here.
+         */
+        if (pci_dev->class == PCI_CLASS_SERIAL_USB_EHCI)
+                pci_write_config_word(pci_dev, PCI_COMMAND, 0);
+
         return 0;
 }
 
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 77cb54a65cde..447e83472c01 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1744,11 +1744,6 @@ int pci_prepare_to_sleep(struct pci_dev *dev)
         if (target_state == PCI_POWER_ERROR)
                 return -EIO;
 
-        /* Some devices mustn't be in D3 during system sleep */
-        if (target_state == PCI_D3hot &&
-                        (dev->dev_flags & PCI_DEV_FLAGS_NO_D3_DURING_SLEEP))
-                return 0;
-
         pci_enable_wake(dev, target_state, device_may_wakeup(&dev->dev));
 
         error = pci_set_power_state(dev, target_state);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 194b243a2817..2a7521677541 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2929,32 +2929,6 @@ static void __devinit disable_igfx_irq(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
 
-/*
- * The Intel 6 Series/C200 Series chipset's EHCI controllers on many
- * ASUS motherboards will cause memory corruption or a system crash
- * if they are in D3 while the system is put into S3 sleep.
- */
-static void __devinit asus_ehci_no_d3(struct pci_dev *dev)
-{
-        const char *sys_info;
-        static const char good_Asus_board[] = "P8Z68-V";
-
-        if (dev->dev_flags & PCI_DEV_FLAGS_NO_D3_DURING_SLEEP)
-                return;
-        if (dev->subsystem_vendor != PCI_VENDOR_ID_ASUSTEK)
-                return;
-        sys_info = dmi_get_system_info(DMI_BOARD_NAME);
-        if (sys_info && memcmp(sys_info, good_Asus_board,
-                        sizeof(good_Asus_board) - 1) == 0)
-                return;
-
-        dev_info(&dev->dev, "broken D3 during system sleep on ASUS\n");
-        dev->dev_flags |= PCI_DEV_FLAGS_NO_D3_DURING_SLEEP;
-        device_set_wakeup_capable(&dev->dev, false);
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1c26, asus_ehci_no_d3);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1c2d, asus_ehci_no_d3);
-
 static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
                           struct pci_fixup *end)
 {
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 09a737c868b5..8b4b3829d9e7 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2519,9 +2519,12 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load)
 {
         struct regulator_dev *rdev = regulator->rdev;
         struct regulator *consumer;
-        int ret, output_uV, input_uV, total_uA_load = 0;
+        int ret, output_uV, input_uV = 0, total_uA_load = 0;
         unsigned int mode;
 
+        if (rdev->supply)
+                input_uV = regulator_get_voltage(rdev->supply);
+
         mutex_lock(&rdev->mutex);
 
         /*
@@ -2554,10 +2557,7 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load)
                 goto out;
         }
 
-        /* get input voltage */
-        input_uV = 0;
-        if (rdev->supply)
-                input_uV = regulator_get_voltage(rdev->supply);
+        /* No supply? Use constraint voltage */
         if (input_uV <= 0)
                 input_uV = rdev->constraints->input_uV;
         if (input_uV <= 0) {
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index 24d880e78ec6..f8d818abf98c 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -4,9 +4,11 @@ menu "Remoteproc drivers (EXPERIMENTAL)"
 config REMOTEPROC
         tristate
         depends on EXPERIMENTAL
+        select FW_CONFIG
 
 config OMAP_REMOTEPROC
         tristate "OMAP remoteproc support"
+        depends on EXPERIMENTAL
         depends on ARCH_OMAP4
         depends on OMAP_IOMMU
         select REMOTEPROC
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 75506ec2840e..39d3aa41adda 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -188,6 +188,26 @@ static int rpmsg_uevent(struct device *dev, struct kobj_uevent_env *env)
                                         rpdev->id.name);
 }
 
+/**
+ * __ept_release() - deallocate an rpmsg endpoint
+ * @kref: the ept's reference count
+ *
+ * This function deallocates an ept, and is invoked when its @kref refcount
+ * drops to zero.
+ *
+ * Never invoke this function directly!
+ */
+static void __ept_release(struct kref *kref)
+{
+        struct rpmsg_endpoint *ept = container_of(kref, struct rpmsg_endpoint,
+                                                  refcount);
+        /*
+         * At this point no one holds a reference to ept anymore,
+         * so we can directly free it
+         */
+        kfree(ept);
+}
+
 /* for more info, see below documentation of rpmsg_create_ept() */
 static struct rpmsg_endpoint *__rpmsg_create_ept(struct virtproc_info *vrp,
                 struct rpmsg_channel *rpdev, rpmsg_rx_cb_t cb,
@@ -206,6 +226,9 @@ static struct rpmsg_endpoint *__rpmsg_create_ept(struct virtproc_info *vrp,
                 return NULL;
         }
 
+        kref_init(&ept->refcount);
+        mutex_init(&ept->cb_lock);
+
         ept->rpdev = rpdev;
         ept->cb = cb;
         ept->priv = priv;
@@ -238,7 +261,7 @@ rem_idr:
         idr_remove(&vrp->endpoints, request);
 free_ept:
         mutex_unlock(&vrp->endpoints_lock);
-        kfree(ept);
+        kref_put(&ept->refcount, __ept_release);
         return NULL;
 }
 
@@ -302,11 +325,17 @@ EXPORT_SYMBOL(rpmsg_create_ept);
 static void
 __rpmsg_destroy_ept(struct virtproc_info *vrp, struct rpmsg_endpoint *ept)
 {
+        /* make sure new inbound messages can't find this ept anymore */
         mutex_lock(&vrp->endpoints_lock);
         idr_remove(&vrp->endpoints, ept->addr);
         mutex_unlock(&vrp->endpoints_lock);
 
-        kfree(ept);
+        /* make sure in-flight inbound messages won't invoke cb anymore */
+        mutex_lock(&ept->cb_lock);
+        ept->cb = NULL;
+        mutex_unlock(&ept->cb_lock);
+
+        kref_put(&ept->refcount, __ept_release);
 }
 
 /**
@@ -790,12 +819,28 @@ static void rpmsg_recv_done(struct virtqueue *rvq)
 
         /* use the dst addr to fetch the callback of the appropriate user */
         mutex_lock(&vrp->endpoints_lock);
+
         ept = idr_find(&vrp->endpoints, msg->dst);
+
+        /* let's make sure no one deallocates ept while we use it */
+        if (ept)
+                kref_get(&ept->refcount);
+
         mutex_unlock(&vrp->endpoints_lock);
 
-        if (ept && ept->cb)
-                ept->cb(ept->rpdev, msg->data, msg->len, ept->priv, msg->src);
-        else
+        if (ept) {
+                /* make sure ept->cb doesn't go away while we use it */
+                mutex_lock(&ept->cb_lock);
+
+                if (ept->cb)
+                        ept->cb(ept->rpdev, msg->data, msg->len, ept->priv,
+                                msg->src);
+
+                mutex_unlock(&ept->cb_lock);
+
+                /* farewell, ept, we don't need you anymore */
+                kref_put(&ept->refcount, __ept_release);
+        } else
                 dev_warn(dev, "msg received with no recepient\n");
 
         /* publish the real size of the buffer */
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c
index 532d212b6b2c..393e7ce8e95a 100644
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -201,7 +201,7 @@ static void asd_get_response_tasklet(struct asd_ascb *ascb,
 
                 if (SAS_STATUS_BUF_SIZE >= sizeof(*resp)) {
                         resp->frame_len = le16_to_cpu(*(__le16 *)(r+6));
-                        memcpy(&resp->ending_fis[0], r+16, 24);
+                        memcpy(&resp->ending_fis[0], r+16, ATA_RESP_FIS_SIZE);
                         ts->buf_valid_size = sizeof(*resp);
                 }
         }
diff --git a/drivers/scsi/bnx2i/bnx2i.h b/drivers/scsi/bnx2i/bnx2i.h
index 0c53c28dc3d3..7e77cf620291 100644
--- a/drivers/scsi/bnx2i/bnx2i.h
+++ b/drivers/scsi/bnx2i/bnx2i.h
@@ -350,6 +350,7 @@ struct bnx2i_hba {
         struct pci_dev *pcidev;
         struct net_device *netdev;
         void __iomem *regview;
+        resource_size_t reg_base;
 
         u32 age;
         unsigned long cnic_dev_type;
diff --git a/drivers/scsi/bnx2i/bnx2i_hwi.c b/drivers/scsi/bnx2i/bnx2i_hwi.c
index ece47e502282..86a12b48e477 100644
--- a/drivers/scsi/bnx2i/bnx2i_hwi.c
+++ b/drivers/scsi/bnx2i/bnx2i_hwi.c
@@ -2724,7 +2724,6 @@ int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep)
                 goto arm_cq;
         }
 
-        reg_base = ep->hba->netdev->base_addr;
         if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) &&
             (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) {
                 config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2);
@@ -2740,7 +2739,7 @@ int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep)
                 /* 5709 device in normal node and 5706/5708 devices */
                 reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num);
 
-        ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off,
+        ep->qp.ctx_base = ioremap_nocache(ep->hba->reg_base + reg_off,
                                           MB_KERNEL_CTX_SIZE);
         if (!ep->qp.ctx_base)
                 return -ENOMEM;
diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c
index f8d516b53161..621538b8b544 100644
--- a/drivers/scsi/bnx2i/bnx2i_iscsi.c
+++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c
@@ -811,13 +811,13 @@ struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic)
         bnx2i_identify_device(hba);
         bnx2i_setup_host_queue_size(hba, shost);
 
+        hba->reg_base = pci_resource_start(hba->pcidev, 0);
         if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
-                hba->regview = ioremap_nocache(hba->netdev->base_addr,
-                                               BNX2_MQ_CONFIG2);
+                hba->regview = pci_iomap(hba->pcidev, 0, BNX2_MQ_CONFIG2);
                 if (!hba->regview)
                         goto ioreg_map_err;
         } else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
-                hba->regview = ioremap_nocache(hba->netdev->base_addr, 4096);
+                hba->regview = pci_iomap(hba->pcidev, 0, 4096);
                 if (!hba->regview)
                         goto ioreg_map_err;
         }
@@ -884,7 +884,7 @@ cid_que_err:
         bnx2i_free_mp_bdt(hba);
 mp_bdt_mem_err:
         if (hba->regview) {
-                iounmap(hba->regview);
+                pci_iounmap(hba->pcidev, hba->regview);
                 hba->regview = NULL;
         }
 ioreg_map_err:
@@ -910,7 +910,7 @@ void bnx2i_free_hba(struct bnx2i_hba *hba)
         pci_dev_put(hba->pcidev);
 
         if (hba->regview) {
-                iounmap(hba->regview);
+                pci_iounmap(hba->pcidev, hba->regview);
                 hba->regview = NULL;
         }
         bnx2i_free_mp_bdt(hba);
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 441d88ad99a7..d109cc3a17b6 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -139,12 +139,12 @@ static void sas_ata_task_done(struct sas_task *task)
         if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD ||
             ((stat->stat == SAM_STAT_CHECK_CONDITION &&
               dev->sata_dev.command_set == ATAPI_COMMAND_SET))) {
-                ata_tf_from_fis(resp->ending_fis, &dev->sata_dev.tf);
+                memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
 
                 if (!link->sactive) {
-                        qc->err_mask |= ac_err_mask(dev->sata_dev.tf.command);
+                        qc->err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
                 } else {
-                        link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.tf.command);
+                        link->eh_info.err_mask |= ac_err_mask(dev->sata_dev.fis[2]);
                         if (unlikely(link->eh_info.err_mask))
                                 qc->flags |= ATA_QCFLAG_FAILED;
                 }
@@ -161,8 +161,8 @@ static void sas_ata_task_done(struct sas_task *task)
                                 qc->flags |= ATA_QCFLAG_FAILED;
                         }
 
-                        dev->sata_dev.tf.feature = 0x04; /* status err */
-                        dev->sata_dev.tf.command = ATA_ERR;
+                        dev->sata_dev.fis[3] = 0x04; /* status err */
+                        dev->sata_dev.fis[2] = ATA_ERR;
                 }
         }
 
@@ -269,7 +269,7 @@ static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
 {
         struct domain_device *dev = qc->ap->private_data;
 
-        memcpy(&qc->result_tf, &dev->sata_dev.tf, sizeof(qc->result_tf));
+        ata_tf_from_fis(dev->sata_dev.fis, &qc->result_tf);
         return true;
 }
 
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index ced26c8ccd57..0d2ea0c224c3 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -401,7 +401,7 @@ out:
 }
 
 #ifdef CONFIG_PPC_EARLY_DEBUG_OPAL_RAW
-void __init udbg_init_debug_opal(void)
+void __init udbg_init_debug_opal_raw(void)
 {
         u32 index = CONFIG_PPC_EARLY_DEBUG_OPAL_VTERMNO;
         hvc_opal_privs[index] = &hvc_opal_boot_priv;
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 8fd398dffced..ee469274a3fe 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -500,6 +500,8 @@ retry:
                         goto retry;
                 }
                 if (!desc->reslength) { /* zero length read */
+                        dev_dbg(&desc->intf->dev, "%s: zero length - clearing WDM_READ\n", __func__);
+                        clear_bit(WDM_READ, &desc->flags);
                         spin_unlock_irq(&desc->iuspin);
                         goto retry;
                 }
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 25a7422ee657..8fb484984c86 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2324,12 +2324,16 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
 static int hub_port_reset(struct usb_hub *hub, int port1,
                         struct usb_device *udev, unsigned int delay, bool warm);
 
-/* Is a USB 3.0 port in the Inactive state? */
-static bool hub_port_inactive(struct usb_hub *hub, u16 portstatus)
+/* Is a USB 3.0 port in the Inactive or Complinance Mode state?
+ * Port worm reset is required to recover
+ */
+static bool hub_port_warm_reset_required(struct usb_hub *hub, u16 portstatus)
 {
         return hub_is_superspeed(hub->hdev) &&
-                (portstatus & USB_PORT_STAT_LINK_STATE) ==
-                USB_SS_PORT_LS_SS_INACTIVE;
+                (((portstatus & USB_PORT_STAT_LINK_STATE) ==
+                  USB_SS_PORT_LS_SS_INACTIVE) ||
+                 ((portstatus & USB_PORT_STAT_LINK_STATE) ==
+                  USB_SS_PORT_LS_COMP_MOD)) ;
 }
 
 static int hub_port_wait_reset(struct usb_hub *hub, int port1,
@@ -2365,7 +2369,7 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
                          *
                          * See https://bugzilla.kernel.org/show_bug.cgi?id=41752
                          */
-                        if (hub_port_inactive(hub, portstatus)) {
+                        if (hub_port_warm_reset_required(hub, portstatus)) {
                                 int ret;
 
                                 if ((portchange & USB_PORT_STAT_C_CONNECTION))
@@ -4408,9 +4412,7 @@ static void hub_events(void)
                         /* Warm reset a USB3 protocol port if it's in
                          * SS.Inactive state.
                          */
-                        if (hub_is_superspeed(hub->hdev) &&
-                                (portstatus & USB_PORT_STAT_LINK_STATE)
-                                        == USB_SS_PORT_LS_SS_INACTIVE) {
+                        if (hub_port_warm_reset_required(hub, portstatus)) {
                                 dev_dbg(hub_dev, "warm reset port %d\n", i);
                                 hub_port_reset(hub, i, NULL,
                                                 HUB_BH_RESET_TIME, true);
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 2732ef660c5c..7b01094d7993 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -462,6 +462,42 @@ void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
         }
 }
 
+/* Updates Link Status for super Speed port */
+static void xhci_hub_report_link_state(u32 *status, u32 status_reg)
+{
+        u32 pls = status_reg & PORT_PLS_MASK;
+
+        /* resume state is a xHCI internal state.
+         * Do not report it to usb core.
+         */
+        if (pls == XDEV_RESUME)
+                return;
+
+        /* When the CAS bit is set then warm reset
+         * should be performed on port
+         */
+        if (status_reg & PORT_CAS) {
+                /* The CAS bit can be set while the port is
+                 * in any link state.
+                 * Only roothubs have CAS bit, so we
+                 * pretend to be in compliance mode
+                 * unless we're already in compliance
+                 * or the inactive state.
+                 */
+                if (pls != USB_SS_PORT_LS_COMP_MOD &&
+                    pls != USB_SS_PORT_LS_SS_INACTIVE) {
+                        pls = USB_SS_PORT_LS_COMP_MOD;
+                }
+                /* Return also connection bit -
+                 * hub state machine resets port
+                 * when this bit is set.
+                 */
+                pls |= USB_PORT_STAT_CONNECTION;
+        }
+        /* update status field */
+        *status |= pls;
+}
+
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                 u16 wIndex, char *buf, u16 wLength)
 {
@@ -606,13 +642,9 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                         else
                                 status |= USB_PORT_STAT_POWER;
                 }
-                /* Port Link State */
+                /* Update Port Link State for super speed ports*/
                 if (hcd->speed == HCD_USB3) {
-                        /* resume state is a xHCI internal state.
-                         * Do not report it to usb core.
-                         */
-                        if ((temp & PORT_PLS_MASK) != XDEV_RESUME)
-                                status |= (temp & PORT_PLS_MASK);
+                        xhci_hub_report_link_state(&status, temp);
                 }
                 if (bus_state->port_c_suspend & (1 << wIndex))
                         status |= 1 << USB_PORT_FEAT_C_SUSPEND;
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 23b4aefd1036..8275645889da 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -885,6 +885,17 @@ static void update_ring_for_set_deq_completion(struct xhci_hcd *xhci,
         num_trbs_free_temp = ep_ring->num_trbs_free;
         dequeue_temp = ep_ring->dequeue;
 
+        /* If we get two back-to-back stalls, and the first stalled transfer
+         * ends just before a link TRB, the dequeue pointer will be left on
+         * the link TRB by the code in the while loop.  So we have to update
+         * the dequeue pointer one segment further, or we'll jump off
+         * the segment into la-la-land.
+         */
+        if (last_trb(xhci, ep_ring, ep_ring->deq_seg, ep_ring->dequeue)) {
+                ep_ring->deq_seg = ep_ring->deq_seg->next;
+                ep_ring->dequeue = ep_ring->deq_seg->trbs;
+        }
+
         while (ep_ring->dequeue != dev->eps[ep_index].queued_deq_ptr) {
                 /* We have more usable TRBs */
                 ep_ring->num_trbs_free++;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index de3d6e3e57be..55c0785810c9 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -341,7 +341,11 @@ struct xhci_op_regs {
 #define PORT_PLC        (1 << 22)
 /* port configure error change - port failed to configure its link partner */
 #define PORT_CEC        (1 << 23)
-/* bit 24 reserved */
+/* Cold Attach Status - xHC can set this bit to report device attached during
+ * Sx state. Warm port reset should be perfomed to clear this bit and move port
+ * to connected state.
+ */
+#define PORT_CAS        (1 << 24)
 /* wake on connect (enable) */
 #define PORT_WKCONN_E   (1 << 25)
 /* wake on disconnect (enable) */
diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
index 81423f7361db..d47eb06fe463 100644
--- a/drivers/usb/serial/metro-usb.c
+++ b/drivers/usb/serial/metro-usb.c
@@ -222,14 +222,6 @@ static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
         metro_priv->throttled = 0;
         spin_unlock_irqrestore(&metro_priv->lock, flags);
 
-        /*
-         * Force low_latency on so that our tty_push actually forces the data
-         * through, otherwise it is scheduled, and with high data rates (like
-         * with OHCI) data can get lost.
-         */
-        if (tty)
-                tty->low_latency = 1;
-
         /* Clear the urb pipe. */
         usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe);
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index adf8ce72be50..417ab1b0aa30 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -497,6 +497,15 @@ static void option_instat_callback(struct urb *urb);
 
 /* MediaTek products */
 #define MEDIATEK_VENDOR_ID                      0x0e8d
+#define MEDIATEK_PRODUCT_DC_1COM                0x00a0
+#define MEDIATEK_PRODUCT_DC_4COM                0x00a5
+#define MEDIATEK_PRODUCT_DC_5COM                0x00a4
+#define MEDIATEK_PRODUCT_7208_1COM              0x7101
+#define MEDIATEK_PRODUCT_7208_2COM              0x7102
+#define MEDIATEK_PRODUCT_FP_1COM                0x0003
+#define MEDIATEK_PRODUCT_FP_2COM                0x0023
+#define MEDIATEK_PRODUCT_FPDC_1COM              0x0043
+#define MEDIATEK_PRODUCT_FPDC_2COM              0x0033
 
 /* Cellient products */
 #define CELLIENT_VENDOR_ID                      0x2692
@@ -554,6 +563,10 @@ static const struct option_blacklist_info net_intf1_blacklist = {
         .reserved = BIT(1),
 };
 
+static const struct option_blacklist_info net_intf2_blacklist = {
+        .reserved = BIT(2),
+};
+
 static const struct option_blacklist_info net_intf3_blacklist = {
         .reserved = BIT(3),
 };
@@ -1099,6 +1112,8 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1298, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1299, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1300, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1402, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf2_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2002, 0xff,
           0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_k3765_z_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2003, 0xff, 0xff, 0xff) },
@@ -1240,6 +1255,17 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, 0x00a1, 0xff, 0x02, 0x01) },
         { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, 0x00a2, 0xff, 0x00, 0x00) },
         { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, 0x00a2, 0xff, 0x02, 0x01) },        /* MediaTek MT6276M modem & app port */
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_1COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_5COM, 0xff, 0x02, 0x01) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_5COM, 0xff, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_4COM, 0xff, 0x02, 0x01) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_4COM, 0xff, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_7208_1COM, 0x02, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_7208_2COM, 0x02, 0x02, 0x01) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FP_1COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FP_2COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FPDC_1COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FPDC_2COM, 0x0a, 0x00, 0x00) },
         { USB_DEVICE(CELLIENT_VENDOR_ID, CELLIENT_PRODUCT_MEN200) },
         { } /* Terminating entry */
 };
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index bfbc15ca38dd..0908e6044333 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -47,7 +47,7 @@ struct virtio_balloon
         struct task_struct *thread;
 
         /* Waiting for host to ack the pages we released. */
-        struct completion acked;
+        wait_queue_head_t acked;
 
         /* Number of balloon pages we've told the Host we're not using. */
         unsigned int num_pages;
@@ -89,29 +89,25 @@ static struct page *balloon_pfn_to_page(u32 pfn)
 
 static void balloon_ack(struct virtqueue *vq)
 {
-        struct virtio_balloon *vb;
-        unsigned int len;
+        struct virtio_balloon *vb = vq->vdev->priv;
 
-        vb = virtqueue_get_buf(vq, &len);
-        if (vb)
-                complete(&vb->acked);
+        wake_up(&vb->acked);
 }
 
 static void tell_host(struct virtio_balloon *vb, struct virtqueue *vq)
 {
         struct scatterlist sg;
+        unsigned int len;
 
         sg_init_one(&sg, vb->pfns, sizeof(vb->pfns[0]) * vb->num_pfns);
 
-        init_completion(&vb->acked);
-
         /* We should always be able to add one buffer to an empty queue. */
         if (virtqueue_add_buf(vq, &sg, 1, 0, vb, GFP_KERNEL) < 0)
                 BUG();
         virtqueue_kick(vq);
 
         /* When host has read buffer, this completes via balloon_ack */
-        wait_for_completion(&vb->acked);
+        wait_event(vb->acked, virtqueue_get_buf(vq, &len));
 }
 
 static void set_page_pfns(u32 pfns[], struct page *page)
@@ -231,12 +227,8 @@ static void update_balloon_stats(struct virtio_balloon *vb)
  */
 static void stats_request(struct virtqueue *vq)
 {
-        struct virtio_balloon *vb;
-        unsigned int len;
+        struct virtio_balloon *vb = vq->vdev->priv;
 
-        vb = virtqueue_get_buf(vq, &len);
-        if (!vb)
-                return;
         vb->need_stats_update = 1;
         wake_up(&vb->config_change);
 }
@@ -245,11 +237,14 @@ static void stats_handle_request(struct virtio_balloon *vb)
 {
         struct virtqueue *vq;
         struct scatterlist sg;
+        unsigned int len;
 
         vb->need_stats_update = 0;
         update_balloon_stats(vb);
 
         vq = vb->stats_vq;
+        if (!virtqueue_get_buf(vq, &len))
+                return;
         sg_init_one(&sg, vb->stats, sizeof(vb->stats));
         if (virtqueue_add_buf(vq, &sg, 1, 0, vb, GFP_KERNEL) < 0)
                 BUG();
@@ -358,6 +353,7 @@ static int virtballoon_probe(struct virtio_device *vdev)
         INIT_LIST_HEAD(&vb->pages);
         vb->num_pages = 0;
         init_waitqueue_head(&vb->config_change);
+        init_waitqueue_head(&vb->acked);
         vb->vdev = vdev;
         vb->need_stats_update = 0;
 
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index f07fc2d08159..2e31e8b3a190 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -22,8 +22,8 @@
 /* Gpio pin is open source */
 #define GPIOF_OPEN_SOURCE       (1 << 3)
 
-#define GPIOF_EXPORT            (1 << 2)
-#define GPIOF_EXPORT_CHANGEABLE (1 << 3)
+#define GPIOF_EXPORT            (1 << 4)
+#define GPIOF_EXPORT_CHANGEABLE (1 << 5)
 #define GPIOF_EXPORT_DIR_FIXED  (GPIOF_EXPORT)
 #define GPIOF_EXPORT_DIR_CHANGEABLE (GPIOF_EXPORT | GPIOF_EXPORT_CHANGEABLE)
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index fefb4e19bf6a..d8c379dba6ad 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -176,8 +176,6 @@ enum pci_dev_flags {
         PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
         /* Provide indication device is assigned by a Virtual Machine Manager */
         PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4,
-        /* Device causes system crash if in D3 during S3 sleep */
-        PCI_DEV_FLAGS_NO_D3_DURING_SLEEP = (__force pci_dev_flags_t) 8,
 };
 
 enum pci_irq_reroute_variant {
diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h
index a8e50e44203c..82a673905edb 100644
--- a/include/linux/rpmsg.h
+++ b/include/linux/rpmsg.h
@@ -38,6 +38,8 @@
 #include <linux/types.h>
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
+#include <linux/kref.h>
+#include <linux/mutex.h>
 
 /* The feature bitmap for virtio rpmsg */
 #define VIRTIO_RPMSG_F_NS       0 /* RP supports name service notifications */
@@ -120,7 +122,9 @@ typedef void (*rpmsg_rx_cb_t)(struct rpmsg_channel *, void *, int, void *, u32);
 /**
  * struct rpmsg_endpoint - binds a local rpmsg address to its user
  * @rpdev: rpmsg channel device
+ * @refcount: when this drops to zero, the ept is deallocated
  * @cb: rx callback handler
+ * @cb_lock: must be taken before accessing/changing @cb
  * @addr: local rpmsg address
  * @priv: private data for the driver's use
  *
@@ -140,7 +144,9 @@ typedef void (*rpmsg_rx_cb_t)(struct rpmsg_channel *, void *, int, void *, u32);
  */
 struct rpmsg_endpoint {
         struct rpmsg_channel *rpdev;
+        struct kref refcount;
         rpmsg_rx_cb_t cb;
+        struct mutex cb_lock;
         u32 addr;
         void *priv;
 };
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index f4f1c96dca72..10ce74f589c5 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -163,6 +163,8 @@ enum ata_command_set {
         ATAPI_COMMAND_SET = 1,
 };
 
+#define ATA_RESP_FIS_SIZE 24
+
 struct sata_device {
         enum   ata_command_set command_set;
         struct smp_resp        rps_resp; /* report_phy_sata_resp */
@@ -171,7 +173,7 @@ struct sata_device {
 
         struct ata_port *ap;
         struct ata_host ata_host;
-        struct ata_taskfile tf;
+        u8     fis[ATA_RESP_FIS_SIZE];
 };
 
 enum {
@@ -537,7 +539,7 @@ enum exec_status {
  */
 struct ata_task_resp {
         u16  frame_len;
-        u8   ending_fis[24];      /* dev to host or data-in */
+        u8   ending_fis[ATA_RESP_FIS_SIZE];       /* dev to host or data-in */
 };
 
 #define SAS_STATUS_BUF_SIZE 96
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 1e1198546c72..ac06cc595890 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -134,10 +134,16 @@ struct scsi_cmnd {
 
 static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
 {
+        struct scsi_driver **sdp;
+
         if (!cmd->request->rq_disk)
                 return NULL;
 
-        return *(struct scsi_driver **)cmd->request->rq_disk->private_data;
+        sdp = (struct scsi_driver **)cmd->request->rq_disk->private_data;
+        if (!sdp)
+                return NULL;
+
+        return *sdp;
 }
 
 extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t);
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 2097684cf194..b303dfc7dce0 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -901,13 +901,10 @@ static void cgroup_diput(struct dentry *dentry, struct inode *inode)
                 mutex_unlock(&cgroup_mutex);
 
                 /*
-                 * We want to drop the active superblock reference from the
-                 * cgroup creation after all the dentry refs are gone -
-                 * kill_sb gets mighty unhappy otherwise.  Mark
-                 * dentry->d_fsdata with cgroup_diput() to tell
-                 * cgroup_d_release() to call deactivate_super().
+                 * Drop the active superblock reference that we took when we
+                 * created the cgroup
                  */
-                dentry->d_fsdata = cgroup_diput;
+                deactivate_super(cgrp->root->sb);
 
                 /*
                  * if we're getting rid of the cgroup, refcount should ensure
@@ -933,13 +930,6 @@ static int cgroup_delete(const struct dentry *d)
         return 1;
 }
 
-static void cgroup_d_release(struct dentry *dentry)
-{
-        /* did cgroup_diput() tell me to deactivate super? */
-        if (dentry->d_fsdata == cgroup_diput)
-                deactivate_super(dentry->d_sb);
-}
-
 static void remove_dir(struct dentry *d)
 {
         struct dentry *parent = dget(d->d_parent);
@@ -1547,7 +1537,6 @@ static int cgroup_get_rootdir(struct super_block *sb)
         static const struct dentry_operations cgroup_dops = {
                 .d_iput = cgroup_diput,
                 .d_delete = cgroup_delete,
-                .d_release = cgroup_d_release,
         };
 
         struct inode *inode =
@@ -3894,8 +3883,12 @@ static void css_dput_fn(struct work_struct *work)
 {
         struct cgroup_subsys_state *css =
                 container_of(work, struct cgroup_subsys_state, dput_work);
+        struct dentry *dentry = css->cgroup->dentry;
+        struct super_block *sb = dentry->d_sb;
 
-        dput(css->cgroup->dentry);
+        atomic_inc(&sb->s_active);
+        dput(dentry);
+        deactivate_super(sb);
 }
 
 static void init_cgroup_css(struct cgroup_subsys_state *css,
diff --git a/kernel/printk.c b/kernel/printk.c
index dba18211685e..177fa49357a5 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -194,8 +194,10 @@ static int console_may_schedule;
  */
 
 enum log_flags {
-        LOG_DEFAULT = 0,
-        LOG_NOCONS = 1,         /* already flushed, do not print to console */
+        LOG_NOCONS      = 1,    /* already flushed, do not print to console */
+        LOG_NEWLINE     = 2,    /* text ended with a newline */
+        LOG_PREFIX      = 4,    /* text started with a prefix */
+        LOG_CONT        = 8,    /* text is a fragment of a continuation line */
 };
 
 struct log {
@@ -217,6 +219,8 @@ static DEFINE_RAW_SPINLOCK(logbuf_lock);
 /* the next printk record to read by syslog(READ) or /proc/kmsg */
 static u64 syslog_seq;
 static u32 syslog_idx;
+static enum log_flags syslog_prev;
+static size_t syslog_partial;
 
 /* index and sequence number of the first record stored in the buffer */
 static u64 log_first_seq;
@@ -430,20 +434,20 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf,
         ret = mutex_lock_interruptible(&user->lock);
         if (ret)
                 return ret;
-        raw_spin_lock(&logbuf_lock);
+        raw_spin_lock_irq(&logbuf_lock);
         while (user->seq == log_next_seq) {
                 if (file->f_flags & O_NONBLOCK) {
                         ret = -EAGAIN;
-                        raw_spin_unlock(&logbuf_lock);
+                        raw_spin_unlock_irq(&logbuf_lock);
                         goto out;
                 }
 
-                raw_spin_unlock(&logbuf_lock);
+                raw_spin_unlock_irq(&logbuf_lock);
                 ret = wait_event_interruptible(log_wait,
                                                user->seq != log_next_seq);
                 if (ret)
                         goto out;
-                raw_spin_lock(&logbuf_lock);
+                raw_spin_lock_irq(&logbuf_lock);
         }
 
         if (user->seq < log_first_seq) {
@@ -451,7 +455,7 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf,
                 user->idx = log_first_idx;
                 user->seq = log_first_seq;
                 ret = -EPIPE;
-                raw_spin_unlock(&logbuf_lock);
+                raw_spin_unlock_irq(&logbuf_lock);
                 goto out;
         }
 
@@ -465,7 +469,7 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf,
         for (i = 0; i < msg->text_len; i++) {
                 unsigned char c = log_text(msg)[i];
 
-                if (c < ' ' || c >= 128)
+                if (c < ' ' || c >= 127 || c == '\\')
                         len += sprintf(user->buf + len, "\\x%02x", c);
                 else
                         user->buf[len++] = c;
@@ -489,7 +493,7 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf,
                                 continue;
                         }
 
-                        if (c < ' ' || c >= 128) {
+                        if (c < ' ' || c >= 127 || c == '\\') {
                                 len += sprintf(user->buf + len, "\\x%02x", c);
                                 continue;
                         }
@@ -501,7 +505,7 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf,
 
         user->idx = log_next(user->idx);
         user->seq++;
-        raw_spin_unlock(&logbuf_lock);
+        raw_spin_unlock_irq(&logbuf_lock);
 
         if (len > count) {
                 ret = -EINVAL;
@@ -528,7 +532,7 @@ static loff_t devkmsg_llseek(struct file *file, loff_t offset, int whence)
         if (offset)
                 return -ESPIPE;
 
-        raw_spin_lock(&logbuf_lock);
+        raw_spin_lock_irq(&logbuf_lock);
         switch (whence) {
         case SEEK_SET:
                 /* the first record */
@@ -552,7 +556,7 @@ static loff_t devkmsg_llseek(struct file *file, loff_t offset, int whence)
         default:
                 ret = -EINVAL;
         }
-        raw_spin_unlock(&logbuf_lock);
+        raw_spin_unlock_irq(&logbuf_lock);
         return ret;
 }
 
@@ -566,14 +570,14 @@ static unsigned int devkmsg_poll(struct file *file, poll_table *wait)
 
         poll_wait(file, &log_wait, wait);
 
-        raw_spin_lock(&logbuf_lock);
+        raw_spin_lock_irq(&logbuf_lock);
         if (user->seq < log_next_seq) {
                 /* return error when data has vanished underneath us */
                 if (user->seq < log_first_seq)
                         ret = POLLIN|POLLRDNORM|POLLERR|POLLPRI;
                 ret = POLLIN|POLLRDNORM;
         }
-        raw_spin_unlock(&logbuf_lock);
+        raw_spin_unlock_irq(&logbuf_lock);
 
         return ret;
 }
@@ -597,10 +601,10 @@ static int devkmsg_open(struct inode *inode, struct file *file)
 
         mutex_init(&user->lock);
 
-        raw_spin_lock(&logbuf_lock);
+        raw_spin_lock_irq(&logbuf_lock);
         user->idx = log_first_idx;
         user->seq = log_first_seq;
-        raw_spin_unlock(&logbuf_lock);
+        raw_spin_unlock_irq(&logbuf_lock);
 
         file->private_data = user;
         return 0;
@@ -818,15 +822,18 @@ static size_t print_time(u64 ts, char *buf)
 static size_t print_prefix(const struct log *msg, bool syslog, char *buf)
 {
         size_t len = 0;
+        unsigned int prefix = (msg->facility << 3) | msg->level;
 
         if (syslog) {
                 if (buf) {
-                        len += sprintf(buf, "<%u>", msg->level);
+                        len += sprintf(buf, "<%u>", prefix);
                 } else {
                         len += 3;
-                        if (msg->level > 9)
-                                len++;
-                        if (msg->level > 99)
+                        if (prefix > 999)
+                                len += 3;
+                        else if (prefix > 99)
+                                len += 2;
+                        else if (prefix > 9)
                                 len++;
                 }
         }
@@ -835,13 +842,26 @@ static size_t print_prefix(const struct log *msg, bool syslog, char *buf)
         return len;
 }
 
-static size_t msg_print_text(const struct log *msg, bool syslog,
-                             char *buf, size_t size)
+static size_t msg_print_text(const struct log *msg, enum log_flags prev,
+                             bool syslog, char *buf, size_t size)
 {
         const char *text = log_text(msg);
         size_t text_size = msg->text_len;
+        bool prefix = true;
+        bool newline = true;
         size_t len = 0;
 
+        if ((prev & LOG_CONT) && !(msg->flags & LOG_PREFIX))
+                prefix = false;
+
+        if (msg->flags & LOG_CONT) {
+                if ((prev & LOG_CONT) && !(prev & LOG_NEWLINE))
+                        prefix = false;
+
+                if (!(msg->flags & LOG_NEWLINE))
+                        newline = false;
+        }
+
         do {
                 const char *next = memchr(text, '\n', text_size);
                 size_t text_len;
@@ -859,16 +879,22 @@ static size_t msg_print_text(const struct log *msg, bool syslog,
                             text_len + 1>= size - len)
                                 break;
 
-                        len += print_prefix(msg, syslog, buf + len);
+                        if (prefix)
+                                len += print_prefix(msg, syslog, buf + len);
                         memcpy(buf + len, text, text_len);
                         len += text_len;
-                        buf[len++] = '\n';
+                        if (next || newline)
+                                buf[len++] = '\n';
                 } else {
                         /* SYSLOG_ACTION_* buffer size only calculation */
-                        len += print_prefix(msg, syslog, NULL);
-                        len += text_len + 1;
+                        if (prefix)
+                                len += print_prefix(msg, syslog, NULL);
+                        len += text_len;
+                        if (next || newline)
+                                len++;
                 }
 
+                prefix = true;
                 text = next;
         } while (text);
 
@@ -887,22 +913,35 @@ static int syslog_print(char __user *buf, int size)
 
         while (size > 0) {
                 size_t n;
+                size_t skip;
 
                 raw_spin_lock_irq(&logbuf_lock);
                 if (syslog_seq < log_first_seq) {
                         /* messages are gone, move to first one */
                         syslog_seq = log_first_seq;
                         syslog_idx = log_first_idx;
+                        syslog_prev = 0;
+                        syslog_partial = 0;
                 }
                 if (syslog_seq == log_next_seq) {
                         raw_spin_unlock_irq(&logbuf_lock);
                         break;
                 }
+
+                skip = syslog_partial;
                 msg = log_from_idx(syslog_idx);
-                n = msg_print_text(msg, true, text, LOG_LINE_MAX);
-                if (n <= size) {
+                n = msg_print_text(msg, syslog_prev, true, text, LOG_LINE_MAX);
+                if (n - syslog_partial <= size) {
+                        /* message fits into buffer, move forward */
                         syslog_idx = log_next(syslog_idx);
                         syslog_seq++;
+                        syslog_prev = msg->flags;
+                        n -= syslog_partial;
+                        syslog_partial = 0;
+                } else if (!len){
+                        /* partial read(), remember position */
+                        n = size;
+                        syslog_partial += n;
                 } else
                         n = 0;
                 raw_spin_unlock_irq(&logbuf_lock);
@@ -910,17 +949,15 @@ static int syslog_print(char __user *buf, int size)
                 if (!n)
                         break;
 
-                len += n;
-                size -= n;
-                buf += n;
-                n = copy_to_user(buf - n, text, n);
-
-                if (n) {
-                        len -= n;
+                if (copy_to_user(buf, text + skip, n)) {
                         if (!len)
                                 len = -EFAULT;
                         break;
                 }
+
+                len += n;
+                size -= n;
+                buf += n;
         }
 
         kfree(text);
@@ -941,6 +978,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                 u64 next_seq;
                 u64 seq;
                 u32 idx;
+                enum log_flags prev;
 
                 if (clear_seq < log_first_seq) {
                         /* messages are gone, move to first available one */
@@ -954,10 +992,11 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                  */
                 seq = clear_seq;
                 idx = clear_idx;
+                prev = 0;
                 while (seq < log_next_seq) {
                         struct log *msg = log_from_idx(idx);
 
-                        len += msg_print_text(msg, true, NULL, 0);
+                        len += msg_print_text(msg, prev, true, NULL, 0);
                         idx = log_next(idx);
                         seq++;
                 }
@@ -965,10 +1004,11 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                 /* move first record forward until length fits into the buffer */
                 seq = clear_seq;
                 idx = clear_idx;
+                prev = 0;
                 while (len > size && seq < log_next_seq) {
                         struct log *msg = log_from_idx(idx);
 
-                        len -= msg_print_text(msg, true, NULL, 0);
+                        len -= msg_print_text(msg, prev, true, NULL, 0);
                         idx = log_next(idx);
                         seq++;
                 }
@@ -977,17 +1017,19 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                 next_seq = log_next_seq;
 
                 len = 0;
+                prev = 0;
                 while (len >= 0 && seq < next_seq) {
                         struct log *msg = log_from_idx(idx);
                         int textlen;
 
-                        textlen = msg_print_text(msg, true, text, LOG_LINE_MAX);
+                        textlen = msg_print_text(msg, prev, true, text, LOG_LINE_MAX);
                         if (textlen < 0) {
                                 len = textlen;
                                 break;
                         }
                         idx = log_next(idx);
                         seq++;
+                        prev = msg->flags;
 
                         raw_spin_unlock_irq(&logbuf_lock);
                         if (copy_to_user(buf + len, text, textlen))
@@ -1000,6 +1042,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
                                 /* messages are gone, move to next one */
                                 seq = log_first_seq;
                                 idx = log_first_idx;
+                                prev = 0;
                         }
                 }
         }
@@ -1018,7 +1061,6 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
 {
         bool clear = false;
         static int saved_console_loglevel = -1;
-        static DEFINE_MUTEX(syslog_mutex);
         int error;
 
         error = check_syslog_permissions(type, from_file);
@@ -1045,17 +1087,11 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
                         error = -EFAULT;
                         goto out;
                 }
-                error = mutex_lock_interruptible(&syslog_mutex);
-                if (error)
-                        goto out;
                 error = wait_event_interruptible(log_wait,
                                                  syslog_seq != log_next_seq);
-                if (error) {
-                        mutex_unlock(&syslog_mutex);
+                if (error)
                         goto out;
-                }
                 error = syslog_print(buf, len);
-                mutex_unlock(&syslog_mutex);
                 break;
         /* Read/clear last kernel messages */
         case SYSLOG_ACTION_READ_CLEAR:
@@ -1111,6 +1147,8 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
                         /* messages are gone, move to first one */
                         syslog_seq = log_first_seq;
                         syslog_idx = log_first_idx;
+                        syslog_prev = 0;
+                        syslog_partial = 0;
                 }
                 if (from_file) {
                         /*
@@ -1120,19 +1158,20 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
                          */
                         error = log_next_idx - syslog_idx;
                 } else {
-                        u64 seq;
-                        u32 idx;
+                        u64 seq = syslog_seq;
+                        u32 idx = syslog_idx;
+                        enum log_flags prev = syslog_prev;
 
                         error = 0;
-                        seq = syslog_seq;
-                        idx = syslog_idx;
                         while (seq < log_next_seq) {
                                 struct log *msg = log_from_idx(idx);
 
-                                error += msg_print_text(msg, true, NULL, 0);
+                                error += msg_print_text(msg, prev, true, NULL, 0);
                                 idx = log_next(idx);
                                 seq++;
+                                prev = msg->flags;
                         }
+                        error -= syslog_partial;
                 }
                 raw_spin_unlock_irq(&logbuf_lock);
                 break;
@@ -1400,10 +1439,9 @@ asmlinkage int vprintk_emit(int facility, int level,
         static char textbuf[LOG_LINE_MAX];
         char *text = textbuf;
         size_t text_len;
+        enum log_flags lflags = 0;
         unsigned long flags;
         int this_cpu;
-        bool newline = false;
-        bool prefix = false;
         int printed_len = 0;
 
         boot_delay_msec();
@@ -1442,7 +1480,7 @@ asmlinkage int vprintk_emit(int facility, int level,
                 recursion_bug = 0;
                 printed_len += strlen(recursion_msg);
                 /* emit KERN_CRIT message */
-                log_store(0, 2, LOG_DEFAULT, 0,
+                log_store(0, 2, LOG_PREFIX|LOG_NEWLINE, 0,
                           NULL, 0, recursion_msg, printed_len);
         }
 
@@ -1455,7 +1493,7 @@ asmlinkage int vprintk_emit(int facility, int level,
         /* mark and strip a trailing newline */
         if (text_len && text[text_len-1] == '\n') {
                 text_len--;
-                newline = true;
+                lflags |= LOG_NEWLINE;
         }
 
         /* strip syslog prefix and extract log level or control flags */
@@ -1465,7 +1503,7 @@ asmlinkage int vprintk_emit(int facility, int level,
                         if (level == -1)
                                 level = text[1] - '0';
                 case 'd':       /* KERN_DEFAULT */
-                        prefix = true;
+                        lflags |= LOG_PREFIX;
                 case 'c':       /* KERN_CONT */
                         text += 3;
                         text_len -= 3;
@@ -1475,22 +1513,20 @@ asmlinkage int vprintk_emit(int facility, int level,
         if (level == -1)
                 level = default_message_loglevel;
 
-        if (dict) {
-                prefix = true;
-                newline = true;
-        }
+        if (dict)
+                lflags |= LOG_PREFIX|LOG_NEWLINE;
 
-        if (!newline) {
+        if (!(lflags & LOG_NEWLINE)) {
                 /*
                  * Flush the conflicting buffer. An earlier newline was missing,
                  * or another task also prints continuation lines.
                  */
-                if (cont.len && (prefix || cont.owner != current))
+                if (cont.len && (lflags & LOG_PREFIX || cont.owner != current))
                         cont_flush();
 
                 /* buffer line if possible, otherwise store it right away */
                 if (!cont_add(facility, level, text, text_len))
-                        log_store(facility, level, LOG_DEFAULT, 0,
+                        log_store(facility, level, lflags | LOG_CONT, 0,
                                   dict, dictlen, text, text_len);
         } else {
                 bool stored = false;
@@ -1502,13 +1538,13 @@ asmlinkage int vprintk_emit(int facility, int level,
                  * flush it out and store this line separately.
                  */
                 if (cont.len && cont.owner == current) {
-                        if (!prefix)
+                        if (!(lflags & LOG_PREFIX))
                                 stored = cont_add(facility, level, text, text_len);
                         cont_flush();
                 }
 
                 if (!stored)
-                        log_store(facility, level, LOG_DEFAULT, 0,
+                        log_store(facility, level, lflags, 0,
                                   dict, dictlen, text, text_len);
         }
         printed_len += text_len;
@@ -1607,8 +1643,8 @@ static struct cont {
 static struct log *log_from_idx(u32 idx) { return NULL; }
 static u32 log_next(u32 idx) { return 0; }
 static void call_console_drivers(int level, const char *text, size_t len) {}
-static size_t msg_print_text(const struct log *msg, bool syslog,
-                             char *buf, size_t size) { return 0; }
+static size_t msg_print_text(const struct log *msg, enum log_flags prev,
+                             bool syslog, char *buf, size_t size) { return 0; }
 static size_t cont_print_text(char *text, size_t size) { return 0; }
 
 #endif /* CONFIG_PRINTK */
@@ -1884,6 +1920,7 @@ void wake_up_klogd(void)
 /* the next printk record to write to the console */
 static u64 console_seq;
 static u32 console_idx;
+static enum log_flags console_prev;
 
 /**
  * console_unlock - unlock the console system
@@ -1944,6 +1981,7 @@ again:
                         /* messages are gone, move to first one */
                         console_seq = log_first_seq;
                         console_idx = log_first_idx;
+                        console_prev = 0;
                 }
 skip:
                 if (console_seq == log_next_seq)
@@ -1957,14 +1995,21 @@ skip:
                          */
                         console_idx = log_next(console_idx);
                         console_seq++;
+                        /*
+                         * We will get here again when we register a new
+                         * CON_PRINTBUFFER console. Clear the flag so we
+                         * will properly dump everything later.
+                         */
+                        msg->flags &= ~LOG_NOCONS;
                         goto skip;
                 }
 
                 level = msg->level;
-                len = msg_print_text(msg, false, text, sizeof(text));
-
+                len = msg_print_text(msg, console_prev, false,
+                                     text, sizeof(text));
                 console_idx = log_next(console_idx);
                 console_seq++;
+                console_prev = msg->flags;
                 raw_spin_unlock(&logbuf_lock);
 
                 stop_critical_timings();        /* don't trace print latency */
@@ -2227,6 +2272,7 @@ void register_console(struct console *newcon)
                 raw_spin_lock_irqsave(&logbuf_lock, flags);
                 console_seq = syslog_seq;
                 console_idx = syslog_idx;
+                console_prev = syslog_prev;
                 raw_spin_unlock_irqrestore(&logbuf_lock, flags);
                 /*
                  * We're about to replay the log buffer.  Only do this to the
@@ -2520,8 +2566,7 @@ bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog,
         }
 
         msg = log_from_idx(dumper->cur_idx);
-        l = msg_print_text(msg, syslog,
-                              line, size);
+        l = msg_print_text(msg, 0, syslog, line, size);
 
         dumper->cur_idx = log_next(dumper->cur_idx);
         dumper->cur_seq++;
@@ -2561,6 +2606,7 @@ bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
         u32 idx;
         u64 next_seq;
         u32 next_idx;
+        enum log_flags prev;
         size_t l = 0;
         bool ret = false;
 
@@ -2583,23 +2629,27 @@ bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
         /* calculate length of entire buffer */
         seq = dumper->cur_seq;
         idx = dumper->cur_idx;
+        prev = 0;
         while (seq < dumper->next_seq) {
                 struct log *msg = log_from_idx(idx);
 
-                l += msg_print_text(msg, true, NULL, 0);
+                l += msg_print_text(msg, prev, true, NULL, 0);
                 idx = log_next(idx);
                 seq++;
+                prev = msg->flags;
         }
 
         /* move first record forward until length fits into the buffer */
         seq = dumper->cur_seq;
         idx = dumper->cur_idx;
+        prev = 0;
         while (l > size && seq < dumper->next_seq) {
                 struct log *msg = log_from_idx(idx);
 
-                l -= msg_print_text(msg, true, NULL, 0);
+                l -= msg_print_text(msg, prev, true, NULL, 0);
                 idx = log_next(idx);
                 seq++;
+                prev = msg->flags;
         }
 
         /* last message in next interation */
@@ -2607,14 +2657,14 @@ bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
         next_idx = idx;
 
         l = 0;
+        prev = 0;
         while (seq < dumper->next_seq) {
                 struct log *msg = log_from_idx(idx);
 
-                l += msg_print_text(msg, syslog,
-                                    buf + l, size - l);
-
+                l += msg_print_text(msg, prev, syslog, buf + l, size - l);
                 idx = log_next(idx);
                 seq++;
+                prev = msg->flags;
         }
 
         dumper->next_seq = next_seq;
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 518aea714d21..66ce41489133 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -78,7 +78,7 @@ static LIST_HEAD(free_entries);
 static DEFINE_SPINLOCK(free_entries_lock);
 
 /* Global disable flag - will be set in case of an error */
-static bool global_disable __read_mostly;
+static u32 global_disable __read_mostly;
 
 /* Global error count */
 static u32 error_count;
@@ -657,7 +657,7 @@ static int dma_debug_fs_init(void)
 
         global_disable_dent = debugfs_create_bool("disabled", 0444,
                         dma_debug_dent,
-                        (u32 *)&global_disable);
+                        &global_disable);
         if (!global_disable_dent)
                 goto out_err;