Merge branch 'linus'

56 files changed, 577 insertions, 237 deletions

diff --git a/Documentation/devicetree/bindings/regulator/tps65090.txt b/Documentation/devicetree/bindings/regulator/tps65090.txt
index 340980239ea9f..ca69f5e3040cf 100644
--- a/Documentation/devicetree/bindings/regulator/tps65090.txt
+++ b/Documentation/devicetree/bindings/regulator/tps65090.txt
@@ -45,8 +45,8 @@ Example:
 		infet5-supply = <&some_reg>;
 		infet6-supply = <&some_reg>;
 		infet7-supply = <&some_reg>;
-		vsys_l1-supply = <&some_reg>;
-		vsys_l2-supply = <&some_reg>;
+		vsys-l1-supply = <&some_reg>;
+		vsys-l2-supply = <&some_reg>;
 
 		regulators {
 			dcdc1 {
diff --git a/Documentation/gpio/consumer.txt b/Documentation/gpio/consumer.txt
index 76546324e968c..6ce544191ca6b 100644
--- a/Documentation/gpio/consumer.txt
+++ b/Documentation/gpio/consumer.txt
@@ -53,7 +53,20 @@ with IS_ERR() (they will never return a NULL pointer). -ENOENT will be returned
 if and only if no GPIO has been assigned to the device/function/index triplet,
 other error codes are used for cases where a GPIO has been assigned but an error
 occurred while trying to acquire it. This is useful to discriminate between mere
-errors and an absence of GPIO for optional GPIO parameters.
+errors and an absence of GPIO for optional GPIO parameters. For the common
+pattern where a GPIO is optional, the gpiod_get_optional() and
+gpiod_get_index_optional() functions can be used. These functions return NULL
+instead of -ENOENT if no GPIO has been assigned to the requested function:
+
+
+	struct gpio_desc *gpiod_get_optional(struct device *dev,
+					     const char *con_id,
+					     enum gpiod_flags flags)
+
+	struct gpio_desc *gpiod_get_index_optional(struct device *dev,
+						   const char *con_id,
+						   unsigned int index,
+						   enum gpiod_flags flags)
 
 Device-managed variants of these functions are also defined:
 
@@ -65,6 +78,15 @@ Device-managed variants of these functions are also defined:
 					       unsigned int idx,
 					       enum gpiod_flags flags)
 
+	struct gpio_desc *devm_gpiod_get_optional(struct device *dev,
+						  const char *con_id,
+						  enum gpiod_flags flags)
+
+	struct gpio_desc * devm_gpiod_get_index_optional(struct device *dev,
+							const char *con_id,
+							unsigned int index,
+							enum gpiod_flags flags)
+
 A GPIO descriptor can be disposed of using the gpiod_put() function:
 
 	void gpiod_put(struct gpio_desc *desc)
diff --git a/Documentation/power/regulator/consumer.txt b/Documentation/power/regulator/consumer.txt
index 81c0e2b49cd86..8afb236ca7653 100644
--- a/Documentation/power/regulator/consumer.txt
+++ b/Documentation/power/regulator/consumer.txt
@@ -143,8 +143,9 @@ This will cause the core to recalculate the total load on the regulator (based
 on all its consumers) and change operating mode (if necessary and permitted)
 to best match the current operating load.
 
-The load_uA value can be determined from the consumers datasheet. e.g.most
-datasheets have tables showing the max current consumed in certain situations.
+The load_uA value can be determined from the consumer's datasheet. e.g. most
+datasheets have tables showing the maximum current consumed in certain
+situations.
 
 Most consumers will use indirect operating mode control since they have no
 knowledge of the regulator or whether the regulator is shared with other
@@ -173,7 +174,7 @@ Consumers can register interest in regulator events by calling :-
 int regulator_register_notifier(struct regulator *regulator,
 			      struct notifier_block *nb);
 
-Consumers can uregister interest by calling :-
+Consumers can unregister interest by calling :-
 
 int regulator_unregister_notifier(struct regulator *regulator,
 				struct notifier_block *nb);
diff --git a/Documentation/power/regulator/design.txt b/Documentation/power/regulator/design.txt
index f9b56b72b782f..fdd919b96830b 100644
--- a/Documentation/power/regulator/design.txt
+++ b/Documentation/power/regulator/design.txt
@@ -9,14 +9,14 @@ Safety
 
  - Errors in regulator configuration can have very serious consequences
    for the system, potentially including lasting hardware damage.
- - It is not possible to automatically determine the power confugration
+ - It is not possible to automatically determine the power configuration
    of the system - software-equivalent variants of the same chip may
-   have different power requirments, and not all components with power
+   have different power requirements, and not all components with power
    requirements are visible to software.
 
   => The API should make no changes to the hardware state unless it has
-     specific knowledge that these changes are safe to do perform on
-     this particular system.
+     specific knowledge that these changes are safe to perform on this
+     particular system.
 
 Consumer use cases
 ------------------
diff --git a/Documentation/power/regulator/machine.txt b/Documentation/power/regulator/machine.txt
index ce63af0a8e35e..757e3b53dc11a 100644
--- a/Documentation/power/regulator/machine.txt
+++ b/Documentation/power/regulator/machine.txt
@@ -11,7 +11,7 @@ Consider the following machine :-
                +-> [Consumer B @ 3.3V]
 
 The drivers for consumers A & B must be mapped to the correct regulator in
-order to control their power supply. This mapping can be achieved in machine
+order to control their power supplies. This mapping can be achieved in machine
 initialisation code by creating a struct regulator_consumer_supply for
 each regulator.
 
@@ -39,7 +39,7 @@ to the 'Vcc' supply for Consumer A.
 
 Constraints can now be registered by defining a struct regulator_init_data
 for each regulator power domain. This structure also maps the consumers
-to their supply regulator :-
+to their supply regulators :-
 
 static struct regulator_init_data regulator1_data = {
 	.constraints = {
diff --git a/Documentation/power/regulator/overview.txt b/Documentation/power/regulator/overview.txt
index 8ed17587a74bd..40ca2d6e2742d 100644
--- a/Documentation/power/regulator/overview.txt
+++ b/Documentation/power/regulator/overview.txt
@@ -36,11 +36,11 @@ Some terms used in this document:-
                    Consumers can be classified into two types:-
 
                    Static: consumer does not change its supply voltage or
-                   current limit. It only needs to enable or disable it's
+                   current limit. It only needs to enable or disable its
                    power supply. Its supply voltage is set by the hardware,
                    bootloader, firmware or kernel board initialisation code.
 
-                   Dynamic: consumer needs to change it's supply voltage or
+                   Dynamic: consumer needs to change its supply voltage or
                    current limit to meet operation demands.
 
 
@@ -156,7 +156,7 @@ relevant to non SoC devices and is split into the following four interfaces:-
       This interface is for machine specific code and allows the creation of
       voltage/current domains (with constraints) for each regulator. It can
       provide regulator constraints that will prevent device damage through
-      overvoltage or over current caused by buggy client drivers. It also
+      overvoltage or overcurrent caused by buggy client drivers. It also
       allows the creation of a regulator tree whereby some regulators are
       supplied by others (similar to a clock tree).
 
diff --git a/Documentation/power/regulator/regulator.txt b/Documentation/power/regulator/regulator.txt
index 13902778ae44c..b17e5833ce214 100644
--- a/Documentation/power/regulator/regulator.txt
+++ b/Documentation/power/regulator/regulator.txt
@@ -13,7 +13,7 @@ Drivers can register a regulator by calling :-
 struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
 					 const struct regulator_config *config);
 
-This will register the regulators capabilities and operations to the regulator
+This will register the regulator's capabilities and operations to the regulator
 core.
 
 Regulators can be unregistered by calling :-
@@ -23,8 +23,8 @@ void regulator_unregister(struct regulator_dev *rdev);
 
 Regulator Events
 ================
-Regulators can send events (e.g. over temp, under voltage, etc) to consumer
-drivers by calling :-
+Regulators can send events (e.g. overtemperature, undervoltage, etc) to
+consumer drivers by calling :-
 
 int regulator_notifier_call_chain(struct regulator_dev *rdev,
 				  unsigned long event, void *data);
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 9b3d2ba82f13a..8689949bdba3f 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -804,7 +804,7 @@
 
 			usb1: usb@48390000 {
 				compatible = "synopsys,dwc3";
-				reg = <0x48390000 0x17000>;
+				reg = <0x48390000 0x10000>;
 				interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>;
 				phys = <&usb2_phy1>;
 				phy-names = "usb2-phy";
@@ -826,7 +826,7 @@
 
 			usb2: usb@483d0000 {
 				compatible = "synopsys,dwc3";
-				reg = <0x483d0000 0x17000>;
+				reg = <0x483d0000 0x10000>;
 				interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;
 				phys = <&usb2_phy2>;
 				phy-names = "usb2-phy";
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 646a6eade788f..e7ac47fa6615e 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -260,7 +260,7 @@
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins>;
-	clock-frequency = <400000>;
+	clock-frequency = <100000>;
 
 	tps65218: tps65218@24 {
 		reg = <0x24>;
@@ -424,7 +424,7 @@
 	ranges = <0 0 0 0x01000000>;	/* minimum GPMC partition = 16MB */
 	nand@0,0 {
 		reg = <0 0 4>;		/* device IO registers */
-		ti,nand-ecc-opt = "bch8";
+		ti,nand-ecc-opt = "bch16";
 		ti,elm-id = <&elm>;
 		nand-bus-width = <8>;
 		gpmc,device-width = <1>;
@@ -443,8 +443,6 @@
 		gpmc,rd-cycle-ns = <40>;
 		gpmc,wr-cycle-ns = <40>;
 		gpmc,wait-pin = <0>;
-		gpmc,wait-on-read;
-		gpmc,wait-on-write;
 		gpmc,bus-turnaround-ns = <0>;
 		gpmc,cycle2cycle-delay-ns = <0>;
 		gpmc,clk-activation-ns = <0>;
diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index ed7dd23959155..ac3e4859935f1 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -435,13 +435,13 @@
 };
 
 &gpmc {
-	status = "okay";
+	status = "okay";	/* Disable QSPI when enabling GPMC (NAND) */
 	pinctrl-names = "default";
 	pinctrl-0 = <&nand_flash_x8>;
 	ranges = <0 0 0x08000000 0x10000000>;	/* CS0: NAND */
 	nand@0,0 {
 		reg = <0 0 0>; /* CS0, offset 0 */
-		ti,nand-ecc-opt = "bch8";
+		ti,nand-ecc-opt = "bch16";
 		ti,elm-id = <&elm>;
 		nand-bus-width = <8>;
 		gpmc,device-width = <1>;
@@ -459,8 +459,7 @@
 		gpmc,access-ns = <30>; /* tCEA + 4*/
 		gpmc,rd-cycle-ns = <40>;
 		gpmc,wr-cycle-ns = <40>;
-		gpmc,wait-on-read = "true";
-		gpmc,wait-on-write = "true";
+		gpmc,wait-pin = <0>;
 		gpmc,bus-turnaround-ns = <0>;
 		gpmc,cycle2cycle-delay-ns = <0>;
 		gpmc,clk-activation-ns = <0>;
@@ -557,7 +556,7 @@
 };
 
 &qspi {
-	status = "okay";
+	status = "disabled";	/* Disable GPMC (NAND) when enabling QSPI */
 	pinctrl-names = "default";
 	pinctrl-0 = <&qspi1_default>;
 
diff --git a/arch/arm/boot/dts/at91rm9200.dtsi b/arch/arm/boot/dts/at91rm9200.dtsi
index 65ccf564b9a56..6c97d4af61eec 100644
--- a/arch/arm/boot/dts/at91rm9200.dtsi
+++ b/arch/arm/boot/dts/at91rm9200.dtsi
@@ -149,7 +149,7 @@
 				usb: usbck {
 					compatible = "atmel,at91rm9200-clk-usb";
 					#clock-cells = <0>;
-					atmel,clk-divisors = <1 2>;
+					atmel,clk-divisors = <1 2 0 0>;
 					clocks = <&pllb>;
 				};
 
diff --git a/arch/arm/boot/dts/at91sam9g20.dtsi b/arch/arm/boot/dts/at91sam9g20.dtsi
index 31f7652612fc8..4e0abbd9d6553 100644
--- a/arch/arm/boot/dts/at91sam9g20.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20.dtsi
@@ -40,6 +40,7 @@
 				};
 
 				pllb: pllbck {
+					compatible = "atmel,at91sam9g20-clk-pllb";
 					atmel,clk-input-range = <2000000 32000000>;
 					atmel,pll-clk-output-ranges = <30000000 100000000 0 0>;
 				};
diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 50f8022905a1f..e03fbf3c68891 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -8,6 +8,7 @@
 /dts-v1/;
 
 #include "dra74x.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "TI DRA742";
@@ -24,9 +25,29 @@
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 	};
+
+	vtt_fixed: fixedregulator-vtt {
+		compatible = "regulator-fixed";
+		regulator-name = "vtt_fixed";
+		regulator-min-microvolt = <1350000>;
+		regulator-max-microvolt = <1350000>;
+		regulator-always-on;
+		regulator-boot-on;
+		enable-active-high;
+		gpio = <&gpio7 11 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &dra7_pmx_core {
+	pinctrl-names = "default";
+	pinctrl-0 = <&vtt_pin>;
+
+	vtt_pin: pinmux_vtt_pin {
+		pinctrl-single,pins = <
+			0x3b4 (PIN_OUTPUT | MUX_MODE14) /* spi1_cs1.gpio7_11 */
+		>;
+	};
+
 	i2c1_pins: pinmux_i2c1_pins {
 		pinctrl-single,pins = <
 			0x400 (PIN_INPUT | MUX_MODE0) /* i2c1_sda */
@@ -43,20 +64,19 @@
 
 	i2c3_pins: pinmux_i2c3_pins {
 		pinctrl-single,pins = <
-			0x410 (PIN_INPUT | MUX_MODE0) /* i2c3_sda */
-			0x414 (PIN_INPUT | MUX_MODE0) /* i2c3_scl */
+			0x288 (PIN_INPUT | MUX_MODE9) /* gpio6_14.i2c3_sda */
+			0x28c (PIN_INPUT | MUX_MODE9) /* gpio6_15.i2c3_scl */
 		>;
 	};
 
 	mcspi1_pins: pinmux_mcspi1_pins {
 		pinctrl-single,pins = <
-			0x3a4 (PIN_INPUT | MUX_MODE0) /* spi2_clk */
-			0x3a8 (PIN_INPUT | MUX_MODE0) /* spi2_d1 */
-			0x3ac (PIN_INPUT | MUX_MODE0) /* spi2_d0 */
-			0x3b0 (PIN_INPUT_SLEW | MUX_MODE0) /* spi2_cs0 */
-			0x3b4 (PIN_INPUT_SLEW | MUX_MODE0) /* spi2_cs1 */
-			0x3b8 (PIN_INPUT_SLEW | MUX_MODE6) /* spi2_cs2 */
-			0x3bc (PIN_INPUT_SLEW | MUX_MODE6) /* spi2_cs3 */
+			0x3a4 (PIN_INPUT | MUX_MODE0) /* spi1_sclk */
+			0x3a8 (PIN_INPUT | MUX_MODE0) /* spi1_d1 */
+			0x3ac (PIN_INPUT | MUX_MODE0) /* spi1_d0 */
+			0x3b0 (PIN_INPUT_SLEW | MUX_MODE0) /* spi1_cs0 */
+			0x3b8 (PIN_INPUT_SLEW | MUX_MODE6) /* spi1_cs2.hdmi1_hpd */
+			0x3bc (PIN_INPUT_SLEW | MUX_MODE6) /* spi1_cs3.hdmi1_cec */
 		>;
 	};
 
@@ -284,7 +304,7 @@
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c3_pins>;
-	clock-frequency = <3400000>;
+	clock-frequency = <400000>;
 };
 
 &mcspi1 {
@@ -483,7 +503,7 @@
 			reg = <0x001c0000 0x00020000>;
 		};
 		partition@7 {
-			label = "NAND.u-boot-env";
+			label = "NAND.u-boot-env.backup1";
 			reg = <0x001e0000 0x00020000>;
 		};
 		partition@8 {
@@ -504,3 +524,8 @@
 &usb2_phy2 {
 	phy-supply = <&ldousb_reg>;
 };
+
+&gpio7 {
+	ti,no-reset-on-init;
+	ti,no-idle-on-init;
+};
diff --git a/arch/arm/boot/dts/omap3xxx-clocks.dtsi b/arch/arm/boot/dts/omap3xxx-clocks.dtsi
index e47ff69dcf705..5c375003bad10 100644
--- a/arch/arm/boot/dts/omap3xxx-clocks.dtsi
+++ b/arch/arm/boot/dts/omap3xxx-clocks.dtsi
@@ -467,6 +467,7 @@
 		ti,bit-shift = <0x1e>;
 		reg = <0x0d00>;
 		ti,set-bit-to-disable;
+		ti,set-rate-parent;
 	};
 
 	dpll4_m6_ck: dpll4_m6_ck {
diff --git a/arch/arm/boot/dts/ste-snowball.dts b/arch/arm/boot/dts/ste-snowball.dts
index 4a2000c620ad7..3e97a669f15ef 100644
--- a/arch/arm/boot/dts/ste-snowball.dts
+++ b/arch/arm/boot/dts/ste-snowball.dts
@@ -116,7 +116,6 @@
 		msp2: msp@80117000 {
 			pinctrl-names = "default";
 			pinctrl-0 = <&msp2_default_mode>;
-			status = "okay";
 		};
 
 		msp3: msp@80125000 {
diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c
index 88099175fc56c..d86771abbf57a 100644
--- a/arch/arm/common/edma.c
+++ b/arch/arm/common/edma.c
@@ -1443,14 +1443,14 @@ void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no)
 EXPORT_SYMBOL(edma_assign_channel_eventq);
 
 static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
-			      struct edma *edma_cc)
+			      struct edma *edma_cc, int cc_id)
 {
 	int i;
 	u32 value, cccfg;
 	s8 (*queue_priority_map)[2];
 
 	/* Decode the eDMA3 configuration from CCCFG register */
-	cccfg = edma_read(0, EDMA_CCCFG);
+	cccfg = edma_read(cc_id, EDMA_CCCFG);
 
 	value = GET_NUM_REGN(cccfg);
 	edma_cc->num_region = BIT(value);
@@ -1464,7 +1464,8 @@ static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
 	value = GET_NUM_EVQUE(cccfg);
 	edma_cc->num_tc = value + 1;
 
-	dev_dbg(dev, "eDMA3 HW configuration (cccfg: 0x%08x):\n", cccfg);
+	dev_dbg(dev, "eDMA3 CC%d HW configuration (cccfg: 0x%08x):\n", cc_id,
+		cccfg);
 	dev_dbg(dev, "num_region: %u\n", edma_cc->num_region);
 	dev_dbg(dev, "num_channel: %u\n", edma_cc->num_channels);
 	dev_dbg(dev, "num_slot: %u\n", edma_cc->num_slots);
@@ -1684,7 +1685,7 @@ static int edma_probe(struct platform_device *pdev)
 			return -ENOMEM;
 
 		/* Get eDMA3 configuration from IP */
-		ret = edma_setup_from_hw(dev, info[j], edma_cc[j]);
+		ret = edma_setup_from_hw(dev, info[j], edma_cc[j], j);
 		if (ret)
 			return ret;
 
diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c
index 4c979d466cc16..a96a8043277c3 100644
--- a/arch/arm/kvm/handle_exit.c
+++ b/arch/arm/kvm/handle_exit.c
@@ -93,6 +93,8 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	else
 		kvm_vcpu_block(vcpu);
 
+	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
+
 	return 1;
 }
 
diff --git a/arch/arm/kvm/init.S b/arch/arm/kvm/init.S
index 991415d978b60..3988e72d16ff9 100644
--- a/arch/arm/kvm/init.S
+++ b/arch/arm/kvm/init.S
@@ -99,6 +99,10 @@ __do_hyp_init:
 	mrc	p15, 0, r0, c10, c2, 1
 	mcr	p15, 4, r0, c10, c2, 1
 
+	@ Invalidate the stale TLBs from Bootloader
+	mcr	p15, 4, r0, c8, c7, 0	@ TLBIALLH
+	dsb	ish
+
 	@ Set the HSCTLR to:
 	@  - ARM/THUMB exceptions: Kernel config (Thumb-2 kernel)
 	@  - Endianness: Kernel config
diff --git a/arch/arm/mach-at91/board-dt-rm9200.c b/arch/arm/mach-at91/board-dt-rm9200.c
index 3a185faee795b..f4b6e91843e44 100644
--- a/arch/arm/mach-at91/board-dt-rm9200.c
+++ b/arch/arm/mach-at91/board-dt-rm9200.c
@@ -14,6 +14,7 @@
 #include <linux/gpio.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
+#include <linux/clk-provider.h>
 
 #include <asm/setup.h>
 #include <asm/irq.h>
@@ -35,13 +36,21 @@ static void __init at91rm9200_dt_init_irq(void)
 	of_irq_init(irq_of_match);
 }
 
+static void __init at91rm9200_dt_timer_init(void)
+{
+#if defined(CONFIG_COMMON_CLK)
+	of_clk_init(NULL);
+#endif
+	at91rm9200_timer_init();
+}
+
 static const char *at91rm9200_dt_board_compat[] __initdata = {
 	"atmel,at91rm9200",
 	NULL
 };
 
 DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200 (Device Tree)")
-	.init_time      = at91rm9200_timer_init,
+	.init_time      = at91rm9200_dt_timer_init,
 	.map_io		= at91_map_io,
 	.handle_irq	= at91_aic_handle_irq,
 	.init_early	= at91rm9200_dt_initialize,
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 9f42d5437fcc5..2f97228f188aa 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -1207,8 +1207,7 @@ int gpmc_cs_program_settings(int cs, struct gpmc_settings *p)
 		}
 	}
 
-	if ((p->wait_on_read || p->wait_on_write) &&
-	    (p->wait_pin > gpmc_nr_waitpins)) {
+	if (p->wait_pin > gpmc_nr_waitpins) {
 		pr_err("%s: invalid wait-pin (%d)\n", __func__, p->wait_pin);
 		return -EINVAL;
 	}
@@ -1288,8 +1287,8 @@ void gpmc_read_settings_dt(struct device_node *np, struct gpmc_settings *p)
 		p->wait_on_write = of_property_read_bool(np,
 							 "gpmc,wait-on-write");
 		if (!p->wait_on_read && !p->wait_on_write)
-			pr_warn("%s: read/write wait monitoring not enabled!\n",
-				__func__);
+			pr_debug("%s: rd/wr wait monitoring not enabled!\n",
+				 __func__);
 	}
 }
 
diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
index e28be510380ca..34b8bd0711e94 100644
--- a/arch/arm64/kvm/handle_exit.c
+++ b/arch/arm64/kvm/handle_exit.c
@@ -66,6 +66,8 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	else
 		kvm_vcpu_block(vcpu);
 
+	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
+
 	return 1;
 }
 
diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S
index d968796f4b2d7..c3191168a994f 100644
--- a/arch/arm64/kvm/hyp-init.S
+++ b/arch/arm64/kvm/hyp-init.S
@@ -80,6 +80,10 @@ __do_hyp_init:
 	msr	mair_el2, x4
 	isb
 
+	/* Invalidate the stale TLBs from Bootloader */
+	tlbi	alle2
+	dsb	sy
+
 	mrs	x4, sctlr_el2
 	and	x4, x4, #SCTLR_EL2_EE	// preserve endianness of EL2
 	ldr	x5, =SCTLR_EL2_FLAGS
diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h
index 1fcdd344c7ad5..4ef7a54813e6b 100644
--- a/arch/m68k/include/asm/unistd.h
+++ b/arch/m68k/include/asm/unistd.h
@@ -4,7 +4,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#define NR_syscalls		352
+#define NR_syscalls		354
 
 #define __ARCH_WANT_OLD_READDIR
 #define __ARCH_WANT_OLD_STAT
diff --git a/arch/m68k/include/uapi/asm/unistd.h b/arch/m68k/include/uapi/asm/unistd.h
index 9cd82fbc7817f..b419c6b7ac373 100644
--- a/arch/m68k/include/uapi/asm/unistd.h
+++ b/arch/m68k/include/uapi/asm/unistd.h
@@ -357,5 +357,7 @@
 #define __NR_sched_setattr	349
 #define __NR_sched_getattr	350
 #define __NR_renameat2		351
+#define __NR_getrandom		352
+#define __NR_memfd_create	353
 
 #endif /* _UAPI_ASM_M68K_UNISTD_H_ */
diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S
index 501e102127899..05b46c2b08b8d 100644
--- a/arch/m68k/kernel/syscalltable.S
+++ b/arch/m68k/kernel/syscalltable.S
@@ -372,4 +372,6 @@ ENTRY(sys_call_table)
 	.long sys_sched_setattr
 	.long sys_sched_getattr		/* 350 */
 	.long sys_renameat2
+	.long sys_getrandom
+	.long sys_memfd_create
 
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 72c20bb16d266..79294c4c5015e 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -62,10 +62,10 @@ long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp)
 	}
 
 	kvm->arch.hpt_cma_alloc = 0;
-	page = kvm_alloc_hpt(1 << (order - PAGE_SHIFT));
+	page = kvm_alloc_hpt(1ul << (order - PAGE_SHIFT));
 	if (page) {
 		hpt = (unsigned long)pfn_to_kaddr(page_to_pfn(page));
-		memset((void *)hpt, 0, (1 << order));
+		memset((void *)hpt, 0, (1ul << order));
 		kvm->arch.hpt_cma_alloc = 1;
 	}
 
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index b76317c1f3eb5..5efb2fe186e78 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -1127,7 +1127,7 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
 					    unsigned long addr, pte_t *ptep)
 {
 	pgste_t pgste;
-	pte_t pte;
+	pte_t pte, oldpte;
 	int young;
 
 	if (mm_has_pgste(vma->vm_mm)) {
@@ -1135,12 +1135,13 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
 		pgste = pgste_ipte_notify(vma->vm_mm, ptep, pgste);
 	}
 
-	pte = *ptep;
+	oldpte = pte = *ptep;
 	ptep_flush_direct(vma->vm_mm, addr, ptep);
 	young = pte_young(pte);
 	pte = pte_mkold(pte);
 
 	if (mm_has_pgste(vma->vm_mm)) {
+		pgste = pgste_update_all(&oldpte, pgste, vma->vm_mm);
 		pgste = pgste_set_pte(ptep, pgste, pte);
 		pgste_set_unlock(ptep, pgste);
 	} else
@@ -1330,6 +1331,7 @@ static inline int ptep_set_access_flags(struct vm_area_struct *vma,
 	ptep_flush_direct(vma->vm_mm, address, ptep);
 
 	if (mm_has_pgste(vma->vm_mm)) {
+		pgste_set_key(ptep, pgste, entry, vma->vm_mm);
 		pgste = pgste_set_pte(ptep, pgste, entry);
 		pgste_set_unlock(ptep, pgste);
 	} else
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index ce81eb2ab76a2..81b0e11521e44 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1317,19 +1317,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 		return -EINVAL;
 	}
 
-	switch (kvm_run->exit_reason) {
-	case KVM_EXIT_S390_SIEIC:
-	case KVM_EXIT_UNKNOWN:
-	case KVM_EXIT_INTR:
-	case KVM_EXIT_S390_RESET:
-	case KVM_EXIT_S390_UCONTROL:
-	case KVM_EXIT_S390_TSCH:
-	case KVM_EXIT_DEBUG:
-		break;
-	default:
-		BUG();
-	}
-
 	vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask;
 	vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr;
 	if (kvm_run->kvm_dirty_regs & KVM_SYNC_PREFIX) {
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 19daa53a3da4a..5404a6261db91 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -986,11 +986,21 @@ int set_guest_storage_key(struct mm_struct *mm, unsigned long addr,
 	pte_t *ptep;
 
 	down_read(&mm->mmap_sem);
+retry:
 	ptep = get_locked_pte(current->mm, addr, &ptl);
 	if (unlikely(!ptep)) {
 		up_read(&mm->mmap_sem);
 		return -EFAULT;
 	}
+	if (!(pte_val(*ptep) & _PAGE_INVALID) &&
+	     (pte_val(*ptep) & _PAGE_PROTECT)) {
+			pte_unmap_unlock(*ptep, ptl);
+			if (fixup_user_fault(current, mm, addr, FAULT_FLAG_WRITE)) {
+				up_read(&mm->mmap_sem);
+				return -EFAULT;
+			}
+			goto retry;
+		}
 
 	new = old = pgste_get_lock(ptep);
 	pgste_val(new) &= ~(PGSTE_GR_BIT | PGSTE_GC_BIT |
diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
index 6f550d9e7a2db..a60f26400705e 100644
--- a/drivers/bus/arm-ccn.c
+++ b/drivers/bus/arm-ccn.c
@@ -586,6 +586,30 @@ static int arm_ccn_pmu_type_eq(u32 a, u32 b)
 	return 0;
 }
 
+static void arm_ccn_pmu_event_destroy(struct perf_event *event)
+{
+	struct arm_ccn *ccn = pmu_to_arm_ccn(event->pmu);
+	struct hw_perf_event *hw = &event->hw;
+
+	if (hw->idx == CCN_IDX_PMU_CYCLE_COUNTER) {
+		clear_bit(CCN_IDX_PMU_CYCLE_COUNTER, ccn->dt.pmu_counters_mask);
+	} else {
+		struct arm_ccn_component *source =
+				ccn->dt.pmu_counters[hw->idx].source;
+
+		if (CCN_CONFIG_TYPE(event->attr.config) == CCN_TYPE_XP &&
+				CCN_CONFIG_EVENT(event->attr.config) ==
+				CCN_EVENT_WATCHPOINT)
+			clear_bit(hw->config_base, source->xp.dt_cmp_mask);
+		else
+			clear_bit(hw->config_base, source->pmu_events_mask);
+		clear_bit(hw->idx, ccn->dt.pmu_counters_mask);
+	}
+
+	ccn->dt.pmu_counters[hw->idx].source = NULL;
+	ccn->dt.pmu_counters[hw->idx].event = NULL;
+}
+
 static int arm_ccn_pmu_event_init(struct perf_event *event)
 {
 	struct arm_ccn *ccn;
@@ -599,6 +623,7 @@ static int arm_ccn_pmu_event_init(struct perf_event *event)
 		return -ENOENT;
 
 	ccn = pmu_to_arm_ccn(event->pmu);
+	event->destroy = arm_ccn_pmu_event_destroy;
 
 	if (hw->sample_period) {
 		dev_warn(ccn->dev, "Sampling not supported!\n");
@@ -731,30 +756,6 @@ static int arm_ccn_pmu_event_init(struct perf_event *event)
 	return 0;
 }
 
-static void arm_ccn_pmu_event_free(struct perf_event *event)
-{
-	struct arm_ccn *ccn = pmu_to_arm_ccn(event->pmu);
-	struct hw_perf_event *hw = &event->hw;
-
-	if (hw->idx == CCN_IDX_PMU_CYCLE_COUNTER) {
-		clear_bit(CCN_IDX_PMU_CYCLE_COUNTER, ccn->dt.pmu_counters_mask);
-	} else {
-		struct arm_ccn_component *source =
-				ccn->dt.pmu_counters[hw->idx].source;
-
-		if (CCN_CONFIG_TYPE(event->attr.config) == CCN_TYPE_XP &&
-				CCN_CONFIG_EVENT(event->attr.config) ==
-				CCN_EVENT_WATCHPOINT)
-			clear_bit(hw->config_base, source->xp.dt_cmp_mask);
-		else
-			clear_bit(hw->config_base, source->pmu_events_mask);
-		clear_bit(hw->idx, ccn->dt.pmu_counters_mask);
-	}
-
-	ccn->dt.pmu_counters[hw->idx].source = NULL;
-	ccn->dt.pmu_counters[hw->idx].event = NULL;
-}
-
 static u64 arm_ccn_pmu_read_counter(struct arm_ccn *ccn, int idx)
 {
 	u64 res;
@@ -1027,8 +1028,6 @@ static int arm_ccn_pmu_event_add(struct perf_event *event, int flags)
 static void arm_ccn_pmu_event_del(struct perf_event *event, int flags)
 {
 	arm_ccn_pmu_event_stop(event, PERF_EF_UPDATE);
-
-	arm_ccn_pmu_event_free(event);
 }
 
 static void arm_ccn_pmu_event_read(struct perf_event *event)
diff --git a/drivers/gpio/gpio-bt8xx.c b/drivers/gpio/gpio-bt8xx.c
index 6557147d9331e..7e4c43c189600 100644
--- a/drivers/gpio/gpio-bt8xx.c
+++ b/drivers/gpio/gpio-bt8xx.c
@@ -241,9 +241,6 @@ static void bt8xxgpio_remove(struct pci_dev *pdev)
 	bgwrite(~0x0, BT848_INT_STAT);
 	bgwrite(0x0, BT848_GPIO_OUT_EN);
 
-	iounmap(bg->mmio);
-	release_mem_region(pci_resource_start(pdev, 0),
-			   pci_resource_len(pdev, 0));
 	pci_disable_device(pdev);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index a66955037e4e2..eee79e1c32225 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1123,7 +1123,7 @@ init_vbt_defaults(struct drm_i915_private *dev_priv)
 	}
 }
 
-static int __init intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
+static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
 {
 	DRM_DEBUG_KMS("Falling back to manually reading VBT from "
 		      "VBIOS ROM for %s\n",
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index e8abfce40976c..9212e6504e0f1 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -804,7 +804,7 @@ static const struct drm_encoder_funcs intel_crt_enc_funcs = {
 	.destroy = intel_encoder_destroy,
 };
 
-static int __init intel_no_crt_dmi_callback(const struct dmi_system_id *id)
+static int intel_no_crt_dmi_callback(const struct dmi_system_id *id)
 {
 	DRM_INFO("Skipping CRT initialization for %s\n", id->ident);
 	return 1;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d074d704f458f..d8324c69fa868 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2233,6 +2233,15 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev,
 	if (need_vtd_wa(dev) && alignment < 256 * 1024)
 		alignment = 256 * 1024;
 
+	/*
+	 * Global gtt pte registers are special registers which actually forward
+	 * writes to a chunk of system memory. Which means that there is no risk
+	 * that the register values disappear as soon as we call
+	 * intel_runtime_pm_put(), so it is correct to wrap only the
+	 * pin/unpin/fence and not more.
+	 */
+	intel_runtime_pm_get(dev_priv);
+
 	dev_priv->mm.interruptible = false;
 	ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
 	if (ret)
@@ -2250,12 +2259,14 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev,
 	i915_gem_object_pin_fence(obj);
 
 	dev_priv->mm.interruptible = true;
+	intel_runtime_pm_put(dev_priv);
 	return 0;
 
 err_unpin:
 	i915_gem_object_unpin_from_display_plane(obj);
 err_interruptible:
 	dev_priv->mm.interruptible = true;
+	intel_runtime_pm_put(dev_priv);
 	return ret;
 }
 
@@ -4188,10 +4199,6 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
 		intel_set_pch_fifo_underrun_reporting(dev, pipe, false);
 
 	intel_disable_pipe(dev_priv, pipe);
-
-	if (intel_crtc->config.dp_encoder_is_mst)
-		intel_ddi_set_vc_payload_alloc(crtc, false);
-
 	ironlake_pfit_disable(intel_crtc);
 
 	for_each_encoder_on_crtc(dev, crtc, encoder)
@@ -4256,6 +4263,9 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
 		intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, false);
 	intel_disable_pipe(dev_priv, pipe);
 
+	if (intel_crtc->config.dp_encoder_is_mst)
+		intel_ddi_set_vc_payload_alloc(crtc, false);
+
 	intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
 
 	ironlake_pfit_disable(intel_crtc);
@@ -8240,6 +8250,15 @@ static int intel_crtc_cursor_set_obj(struct drm_crtc *crtc,
 			goto fail_locked;
 		}
 
+		/*
+		 * Global gtt pte registers are special registers which actually
+		 * forward writes to a chunk of system memory. Which means that
+		 * there is no risk that the register values disappear as soon
+		 * as we call intel_runtime_pm_put(), so it is correct to wrap
+		 * only the pin/unpin/fence and not more.
+		 */
+		intel_runtime_pm_get(dev_priv);
+
 		/* Note that the w/a also requires 2 PTE of padding following
 		 * the bo. We currently fill all unused PTE with the shadow
 		 * page and so we should always have valid PTE following the
@@ -8252,16 +8271,20 @@ static int intel_crtc_cursor_set_obj(struct drm_crtc *crtc,
 		ret = i915_gem_object_pin_to_display_plane(obj, alignment, NULL);
 		if (ret) {
 			DRM_DEBUG_KMS("failed to move cursor bo into the GTT\n");
+			intel_runtime_pm_put(dev_priv);
 			goto fail_locked;
 		}
 
 		ret = i915_gem_object_put_fence(obj);
 		if (ret) {
 			DRM_DEBUG_KMS("failed to release fence for cursor");
+			intel_runtime_pm_put(dev_priv);
 			goto fail_unpin;
 		}
 
 		addr = i915_gem_obj_ggtt_offset(obj);
+
+		intel_runtime_pm_put(dev_priv);
 	} else {
 		int align = IS_I830(dev) ? 16 * 1024 : 256;
 		ret = i915_gem_object_attach_phys(obj, align);
@@ -12481,6 +12504,9 @@ static struct intel_quirk intel_quirks[] = {
 	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
 	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
 
+	/* Acer C720 Chromebook (Core i3 4005U) */
+	{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
+
 	/* Toshiba CB35 Chromebook (Celeron 2955U) */
 	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
 
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 67cfed6d911ae..81d7681faa638 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3661,24 +3661,12 @@ ironlake_dp_detect(struct intel_dp *intel_dp)
 	return intel_dp_detect_dpcd(intel_dp);
 }
 
-static enum drm_connector_status
-g4x_dp_detect(struct intel_dp *intel_dp)
+static int g4x_digital_port_connected(struct drm_device *dev,
+				       struct intel_digital_port *intel_dig_port)
 {
-	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	uint32_t bit;
 
-	/* Can't disconnect eDP, but you can close the lid... */
-	if (is_edp(intel_dp)) {
-		enum drm_connector_status status;
-
-		status = intel_panel_detect(dev);
-		if (status == connector_status_unknown)
-			status = connector_status_connected;
-		return status;
-	}
-
 	if (IS_VALLEYVIEW(dev)) {
 		switch (intel_dig_port->port) {
 		case PORT_B:
@@ -3691,7 +3679,7 @@ g4x_dp_detect(struct intel_dp *intel_dp)
 			bit = PORTD_HOTPLUG_LIVE_STATUS_VLV;
 			break;
 		default:
-			return connector_status_unknown;
+			return -EINVAL;
 		}
 	} else {
 		switch (intel_dig_port->port) {
@@ -3705,11 +3693,36 @@ g4x_dp_detect(struct intel_dp *intel_dp)
 			bit = PORTD_HOTPLUG_LIVE_STATUS_G4X;
 			break;
 		default:
-			return connector_status_unknown;
+			return -EINVAL;
 		}
 	}
 
 	if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0)
+		return 0;
+	return 1;
+}
+
+static enum drm_connector_status
+g4x_dp_detect(struct intel_dp *intel_dp)
+{
+	struct drm_device *dev = intel_dp_to_dev(intel_dp);
+	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+	int ret;
+
+	/* Can't disconnect eDP, but you can close the lid... */
+	if (is_edp(intel_dp)) {
+		enum drm_connector_status status;
+
+		status = intel_panel_detect(dev);
+		if (status == connector_status_unknown)
+			status = connector_status_connected;
+		return status;
+	}
+
+	ret = g4x_digital_port_connected(dev, intel_dig_port);
+	if (ret == -EINVAL)
+		return connector_status_unknown;
+	else if (ret == 0)
 		return connector_status_disconnected;
 
 	return intel_dp_detect_dpcd(intel_dp);
@@ -4066,8 +4079,14 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 	intel_display_power_get(dev_priv, power_domain);
 
 	if (long_hpd) {
-		if (!ibx_digital_port_connected(dev_priv, intel_dig_port))
-			goto mst_fail;
+
+		if (HAS_PCH_SPLIT(dev)) {
+			if (!ibx_digital_port_connected(dev_priv, intel_dig_port))
+				goto mst_fail;
+		} else {
+			if (g4x_digital_port_connected(dev, intel_dig_port) != 1)
+				goto mst_fail;
+		}
 
 		if (!intel_dp_get_dpcd(intel_dp)) {
 			goto mst_fail;
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 881361c0f27e7..fdf40267249c1 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -538,7 +538,7 @@ static const struct drm_encoder_funcs intel_lvds_enc_funcs = {
 	.destroy = intel_encoder_destroy,
 };
 
-static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
+static int intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
 {
 	DRM_INFO("Skipping LVDS initialization for %s\n", id->ident);
 	return 1;
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 59b028f0b1e8c..8e374449c6b56 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -801,7 +801,7 @@ static void pch_enable_backlight(struct intel_connector *connector)
 
 	cpu_ctl2 = I915_READ(BLC_PWM_CPU_CTL2);
 	if (cpu_ctl2 & BLM_PWM_ENABLE) {
-		WARN(1, "cpu backlight already enabled\n");
+		DRM_DEBUG_KMS("cpu backlight already enabled\n");
 		cpu_ctl2 &= ~BLM_PWM_ENABLE;
 		I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2);
 	}
@@ -845,7 +845,7 @@ static void i9xx_enable_backlight(struct intel_connector *connector)
 
 	ctl = I915_READ(BLC_PWM_CTL);
 	if (ctl & BACKLIGHT_DUTY_CYCLE_MASK_PNV) {
-		WARN(1, "backlight already enabled\n");
+		DRM_DEBUG_KMS("backlight already enabled\n");
 		I915_WRITE(BLC_PWM_CTL, 0);
 	}
 
@@ -876,7 +876,7 @@ static void i965_enable_backlight(struct intel_connector *connector)
 
 	ctl2 = I915_READ(BLC_PWM_CTL2);
 	if (ctl2 & BLM_PWM_ENABLE) {
-		WARN(1, "backlight already enabled\n");
+		DRM_DEBUG_KMS("backlight already enabled\n");
 		ctl2 &= ~BLM_PWM_ENABLE;
 		I915_WRITE(BLC_PWM_CTL2, ctl2);
 	}
@@ -910,7 +910,7 @@ static void vlv_enable_backlight(struct intel_connector *connector)
 
 	ctl2 = I915_READ(VLV_BLC_PWM_CTL2(pipe));
 	if (ctl2 & BLM_PWM_ENABLE) {
-		WARN(1, "backlight already enabled\n");
+		DRM_DEBUG_KMS("backlight already enabled\n");
 		ctl2 &= ~BLM_PWM_ENABLE;
 		I915_WRITE(VLV_BLC_PWM_CTL2(pipe), ctl2);
 	}
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 32186a656816e..c69d3ce1b3d69 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1311,6 +1311,7 @@ intel_tv_detect(struct drm_connector *connector, bool force)
 {
 	struct drm_display_mode mode;
 	struct intel_tv *intel_tv = intel_attached_tv(connector);
+	enum drm_connector_status status;
 	int type;
 
 	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
@@ -1328,16 +1329,19 @@ intel_tv_detect(struct drm_connector *connector, bool force)
 		if (intel_get_load_detect_pipe(connector, &mode, &tmp, &ctx)) {
 			type = intel_tv_detect_type(intel_tv, connector);
 			intel_release_load_detect_pipe(connector, &tmp);
+			status = type < 0 ?
+				connector_status_disconnected :
+				connector_status_connected;
 		} else
-			return connector_status_unknown;
+			status = connector_status_unknown;
 
 		drm_modeset_drop_locks(&ctx);
 		drm_modeset_acquire_fini(&ctx);
 	} else
 		return connector->status;
 
-	if (type < 0)
-		return connector_status_disconnected;
+	if (status != connector_status_connected)
+		return status;
 
 	intel_tv->type = type;
 	intel_tv_find_better_format(connector);
diff --git a/drivers/gpu/drm/nouveau/core/core/parent.c b/drivers/gpu/drm/nouveau/core/core/parent.c
index 8701968a9743a..30a2911878f89 100644
--- a/drivers/gpu/drm/nouveau/core/core/parent.c
+++ b/drivers/gpu/drm/nouveau/core/core/parent.c
@@ -86,7 +86,7 @@ nouveau_parent_lclass(struct nouveau_object *parent, u32 *lclass, int size)
 	sclass = nv_parent(parent)->sclass;
 	while (sclass) {
 		if (++nr < size)
-			lclass[nr] = sclass->oclass->handle;
+			lclass[nr] = sclass->oclass->handle & 0xffff;
 		sclass = sclass->sclass;
 	}
 
@@ -96,7 +96,7 @@ nouveau_parent_lclass(struct nouveau_object *parent, u32 *lclass, int size)
 		if (engine && (oclass = engine->sclass)) {
 			while (oclass->ofuncs) {
 				if (++nr < size)
-					lclass[nr] = oclass->handle;
+					lclass[nr] = oclass->handle & 0xffff;
 				oclass++;
 			}
 		}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 7bfdaa163a33a..36b871686d3c6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -450,11 +450,11 @@ static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv,
 					  res,
 					  id_loc - sw_context->buf_start);
 	if (unlikely(ret != 0))
-		goto out_err;
+		return ret;
 
 	ret = vmw_resource_val_add(sw_context, res, &node);
 	if (unlikely(ret != 0))
-		goto out_err;
+		return ret;
 
 	if (res_type == vmw_res_context && dev_priv->has_mob &&
 	    node->first_usage) {
@@ -468,13 +468,13 @@ static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv,
 
 		ret = vmw_resource_context_res_add(dev_priv, sw_context, res);
 		if (unlikely(ret != 0))
-			goto out_err;
+			return ret;
 		node->staged_bindings =
 			kzalloc(sizeof(*node->staged_bindings), GFP_KERNEL);
 		if (node->staged_bindings == NULL) {
 			DRM_ERROR("Failed to allocate context binding "
 				  "information.\n");
-			goto out_err;
+			return -ENOMEM;
 		}
 		INIT_LIST_HEAD(&node->staged_bindings->list);
 	}
@@ -482,8 +482,7 @@ static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv,
 	if (p_val)
 		*p_val = node;
 
-out_err:
-	return ret;
+	return 0;
 }
 
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 6ccd993e26bf4..6eae14d2a3f73 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -180,8 +180,9 @@ void vmw_fifo_release(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
 
 	mutex_lock(&dev_priv->hw_mutex);
 
+	vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
 	while (vmw_read(dev_priv, SVGA_REG_BUSY) != 0)
-		vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
+		;
 
 	dev_priv->last_read_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
 
diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 79a68999a6962..917d54588d95c 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -101,6 +101,7 @@ struct at91_twi_dev {
 	unsigned twi_cwgr_reg;
 	struct at91_twi_pdata *pdata;
 	bool use_dma;
+	bool recv_len_abort;
 	struct at91_twi_dma dma;
 };
 
@@ -267,12 +268,24 @@ static void at91_twi_read_next_byte(struct at91_twi_dev *dev)
 	*dev->buf = at91_twi_read(dev, AT91_TWI_RHR) & 0xff;
 	--dev->buf_len;
 
+	/* return if aborting, we only needed to read RHR to clear RXRDY*/
+	if (dev->recv_len_abort)
+		return;
+
 	/* handle I2C_SMBUS_BLOCK_DATA */
 	if (unlikely(dev->msg->flags & I2C_M_RECV_LEN)) {
-		dev->msg->flags &= ~I2C_M_RECV_LEN;
-		dev->buf_len += *dev->buf;
-		dev->msg->len = dev->buf_len + 1;
-		dev_dbg(dev->dev, "received block length %d\n", dev->buf_len);
+		/* ensure length byte is a valid value */
+		if (*dev->buf <= I2C_SMBUS_BLOCK_MAX && *dev->buf > 0) {
+			dev->msg->flags &= ~I2C_M_RECV_LEN;
+			dev->buf_len += *dev->buf;
+			dev->msg->len = dev->buf_len + 1;
+			dev_dbg(dev->dev, "received block length %d\n",
+					 dev->buf_len);
+		} else {
+			/* abort and send the stop by reading one more byte */
+			dev->recv_len_abort = true;
+			dev->buf_len = 1;
+		}
 	}
 
 	/* send stop if second but last byte has been read */
@@ -421,8 +434,8 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
 		}
 	}
 
-	ret = wait_for_completion_interruptible_timeout(&dev->cmd_complete,
-							dev->adapter.timeout);
+	ret = wait_for_completion_io_timeout(&dev->cmd_complete,
+					     dev->adapter.timeout);
 	if (ret == 0) {
 		dev_err(dev->dev, "controller timed out\n");
 		at91_init_twi_bus(dev);
@@ -444,6 +457,12 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
 		ret = -EIO;
 		goto error;
 	}
+	if (dev->recv_len_abort) {
+		dev_err(dev->dev, "invalid smbus block length recvd\n");
+		ret = -EPROTO;
+		goto error;
+	}
+
 	dev_dbg(dev->dev, "transfer complete\n");
 
 	return 0;
@@ -500,6 +519,7 @@ static int at91_twi_xfer(struct i2c_adapter *adap, struct i2c_msg *msg, int num)
 	dev->buf_len = m_start->len;
 	dev->buf = m_start->buf;
 	dev->msg = m_start;
+	dev->recv_len_abort = false;
 
 	ret = at91_do_twi_transfer(dev);
 
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 6dc5ded86f626..2f64273d3f2bb 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -746,8 +746,7 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
 	}
 	tclk = clk_get_rate(drv_data->clk);
 
-	rc = of_property_read_u32(np, "clock-frequency", &bus_freq);
-	if (rc)
+	if (of_property_read_u32(np, "clock-frequency", &bus_freq))
 		bus_freq = 100000; /* 100kHz by default */
 
 	if (!mv64xxx_find_baud_factors(bus_freq, tclk,
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index f3c7139dfa251..1cc146cfc1f3d 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -34,6 +34,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
+#include <linux/spinlock.h>
 
 /* register offsets */
 #define ICSCR	0x00	/* slave ctrl */
@@ -95,6 +96,7 @@ struct rcar_i2c_priv {
 	struct i2c_msg	*msg;
 	struct clk *clk;
 
+	spinlock_t lock;
 	wait_queue_head_t wait;
 
 	int pos;
@@ -365,20 +367,20 @@ static irqreturn_t rcar_i2c_irq(int irq, void *ptr)
 	struct rcar_i2c_priv *priv = ptr;
 	u32 msr;
 
+	/*-------------- spin lock -----------------*/
+	spin_lock(&priv->lock);
+
 	msr = rcar_i2c_read(priv, ICMSR);
 
+	/* Only handle interrupts that are currently enabled */
+	msr &= rcar_i2c_read(priv, ICMIER);
+
 	/* Arbitration lost */
 	if (msr & MAL) {
 		rcar_i2c_flags_set(priv, (ID_DONE | ID_ARBLOST));
 		goto out;
 	}
 
-	/* Stop */
-	if (msr & MST) {
-		rcar_i2c_flags_set(priv, ID_DONE);
-		goto out;
-	}
-
 	/* Nack */
 	if (msr & MNR) {
 		/* go to stop phase */
@@ -388,6 +390,12 @@ static irqreturn_t rcar_i2c_irq(int irq, void *ptr)
 		goto out;
 	}
 
+	/* Stop */
+	if (msr & MST) {
+		rcar_i2c_flags_set(priv, ID_DONE);
+		goto out;
+	}
+
 	if (rcar_i2c_is_recv(priv))
 		rcar_i2c_flags_set(priv, rcar_i2c_irq_recv(priv, msr));
 	else
@@ -400,6 +408,9 @@ out:
 		wake_up(&priv->wait);
 	}
 
+	spin_unlock(&priv->lock);
+	/*-------------- spin unlock -----------------*/
+
 	return IRQ_HANDLED;
 }
 
@@ -409,14 +420,21 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
 {
 	struct rcar_i2c_priv *priv = i2c_get_adapdata(adap);
 	struct device *dev = rcar_i2c_priv_to_dev(priv);
+	unsigned long flags;
 	int i, ret, timeout;
 
 	pm_runtime_get_sync(dev);
 
+	/*-------------- spin lock -----------------*/
+	spin_lock_irqsave(&priv->lock, flags);
+
 	rcar_i2c_init(priv);
 	/* start clock */
 	rcar_i2c_write(priv, ICCCR, priv->icccr);
 
+	spin_unlock_irqrestore(&priv->lock, flags);
+	/*-------------- spin unlock -----------------*/
+
 	ret = rcar_i2c_bus_barrier(priv);
 	if (ret < 0)
 		goto out;
@@ -428,6 +446,9 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
 			break;
 		}
 
+		/*-------------- spin lock -----------------*/
+		spin_lock_irqsave(&priv->lock, flags);
+
 		/* init each data */
 		priv->msg	= &msgs[i];
 		priv->pos	= 0;
@@ -437,6 +458,9 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
 
 		ret = rcar_i2c_prepare_msg(priv);
 
+		spin_unlock_irqrestore(&priv->lock, flags);
+		/*-------------- spin unlock -----------------*/
+
 		if (ret < 0)
 			break;
 
@@ -540,6 +564,7 @@ static int rcar_i2c_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	init_waitqueue_head(&priv->wait);
+	spin_lock_init(&priv->lock);
 
 	adap = &priv->adap;
 	adap->nr = pdev->id;
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index 69e11853e8bff..e637c32ae5172 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -323,6 +323,10 @@ static void rk3x_i2c_handle_read(struct rk3x_i2c *i2c, unsigned int ipd)
 	/* ack interrupt */
 	i2c_writel(i2c, REG_INT_MBRF, REG_IPD);
 
+	/* Can only handle a maximum of 32 bytes at a time */
+	if (len > 32)
+		len = 32;
+
 	/* read the data from receive buffer */
 	for (i = 0; i < len; ++i) {
 		if (i % 4 == 0)
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 5a4bfe33112ab..46c4643b7a077 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -1434,6 +1434,10 @@ static int cfi_amdstd_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
 
 				mutex_lock(&chip->mutex);
 				ret = get_chip(map, chip, base, FL_LOCKING);
+				if (ret) {
+					mutex_unlock(&chip->mutex);
+					return ret;
+				}
 
 				/* Enter lock register command */
 				cfi_send_gen_cmd(0xAA, cfi->addr_unlock1,
diff --git a/fs/sync.c b/fs/sync.c
index b28d1dd10e8b7..bdc729d80e5e4 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -65,7 +65,7 @@ int sync_filesystem(struct super_block *sb)
 		return ret;
 	return __sync_filesystem(sb, 1);
 }
-EXPORT_SYMBOL_GPL(sync_filesystem);
+EXPORT_SYMBOL(sync_filesystem);
 
 static void sync_inodes_one_sb(struct super_block *sb, void *arg)
 {
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index de2d26d328446..86df952d3e24e 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -5424,7 +5424,7 @@ xfs_bmap_shift_extents(
 	struct xfs_bmap_free	*flist,
 	int			num_exts)
 {
-	struct xfs_btree_cur		*cur;
+	struct xfs_btree_cur		*cur = NULL;
 	struct xfs_bmbt_rec_host	*gotp;
 	struct xfs_bmbt_irec            got;
 	struct xfs_bmbt_irec		left;
@@ -5435,7 +5435,7 @@ xfs_bmap_shift_extents(
 	int				error = 0;
 	int				i;
 	int				whichfork = XFS_DATA_FORK;
-	int				logflags;
+	int				logflags = 0;
 	xfs_filblks_t			blockcount = 0;
 	int				total_extents;
 
@@ -5478,16 +5478,11 @@ xfs_bmap_shift_extents(
 		}
 	}
 
-	/* We are going to change core inode */
-	logflags = XFS_ILOG_CORE;
 	if (ifp->if_flags & XFS_IFBROOT) {
 		cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
 		cur->bc_private.b.firstblock = *firstblock;
 		cur->bc_private.b.flist = flist;
 		cur->bc_private.b.flags = 0;
-	} else {
-		cur = NULL;
-		logflags |= XFS_ILOG_DEXT;
 	}
 
 	/*
@@ -5545,11 +5540,14 @@ xfs_bmap_shift_extents(
 			blockcount = left.br_blockcount +
 				got.br_blockcount;
 			xfs_iext_remove(ip, *current_ext, 1, 0);
+			logflags |= XFS_ILOG_CORE;
 			if (cur) {
 				error = xfs_btree_delete(cur, &i);
 				if (error)
 					goto del_cursor;
 				XFS_WANT_CORRUPTED_GOTO(i == 1, del_cursor);
+			} else {
+				logflags |= XFS_ILOG_DEXT;
 			}
 			XFS_IFORK_NEXT_SET(ip, whichfork,
 				XFS_IFORK_NEXTENTS(ip, whichfork) - 1);
@@ -5575,6 +5573,7 @@ xfs_bmap_shift_extents(
 			got.br_startoff = startoff;
 		}
 
+		logflags |= XFS_ILOG_CORE;
 		if (cur) {
 			error = xfs_bmbt_update(cur, got.br_startoff,
 						got.br_startblock,
@@ -5582,6 +5581,8 @@ xfs_bmap_shift_extents(
 						got.br_state);
 			if (error)
 				goto del_cursor;
+		} else {
+			logflags |= XFS_ILOG_DEXT;
 		}
 
 		(*current_ext)++;
@@ -5597,6 +5598,7 @@ del_cursor:
 		xfs_btree_del_cursor(cur,
 			error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
 
-	xfs_trans_log_inode(tp, ip, logflags);
+	if (logflags)
+		xfs_trans_log_inode(tp, ip, logflags);
 	return error;
 }
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 11e9b4caa54f1..b984647c24db0 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1753,11 +1753,72 @@ xfs_vm_readpages(
 	return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks);
 }
 
+/*
+ * This is basically a copy of __set_page_dirty_buffers() with one
+ * small tweak: buffers beyond EOF do not get marked dirty. If we mark them
+ * dirty, we'll never be able to clean them because we don't write buffers
+ * beyond EOF, and that means we can't invalidate pages that span EOF
+ * that have been marked dirty. Further, the dirty state can leak into
+ * the file interior if the file is extended, resulting in all sorts of
+ * bad things happening as the state does not match the underlying data.
+ *
+ * XXX: this really indicates that bufferheads in XFS need to die. Warts like
+ * this only exist because of bufferheads and how the generic code manages them.
+ */
+STATIC int
+xfs_vm_set_page_dirty(
+	struct page		*page)
+{
+	struct address_space	*mapping = page->mapping;
+	struct inode		*inode = mapping->host;
+	loff_t			end_offset;
+	loff_t			offset;
+	int			newly_dirty;
+
+	if (unlikely(!mapping))
+		return !TestSetPageDirty(page);
+
+	end_offset = i_size_read(inode);
+	offset = page_offset(page);
+
+	spin_lock(&mapping->private_lock);
+	if (page_has_buffers(page)) {
+		struct buffer_head *head = page_buffers(page);
+		struct buffer_head *bh = head;
+
+		do {
+			if (offset < end_offset)
+				set_buffer_dirty(bh);
+			bh = bh->b_this_page;
+			offset += 1 << inode->i_blkbits;
+		} while (bh != head);
+	}
+	newly_dirty = !TestSetPageDirty(page);
+	spin_unlock(&mapping->private_lock);
+
+	if (newly_dirty) {
+		/* sigh - __set_page_dirty() is static, so copy it here, too */
+		unsigned long flags;
+
+		spin_lock_irqsave(&mapping->tree_lock, flags);
+		if (page->mapping) {	/* Race with truncate? */
+			WARN_ON_ONCE(!PageUptodate(page));
+			account_page_dirtied(page, mapping);
+			radix_tree_tag_set(&mapping->page_tree,
+					page_index(page), PAGECACHE_TAG_DIRTY);
+		}
+		spin_unlock_irqrestore(&mapping->tree_lock, flags);
+		__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
+	}
+	return newly_dirty;
+}
+
 const struct address_space_operations xfs_address_space_operations = {
 	.readpage		= xfs_vm_readpage,
 	.readpages		= xfs_vm_readpages,
 	.writepage		= xfs_vm_writepage,
 	.writepages		= xfs_vm_writepages,
+	.set_page_dirty		= xfs_vm_set_page_dirty,
 	.releasepage		= xfs_vm_releasepage,
 	.invalidatepage		= xfs_vm_invalidatepage,
 	.write_begin		= xfs_vm_write_begin,
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 2f1e30d39a354..1707980f9a4b5 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1470,6 +1470,26 @@ xfs_collapse_file_space(
 	start_fsb = XFS_B_TO_FSB(mp, offset + len);
 	shift_fsb = XFS_B_TO_FSB(mp, len);
 
+	/*
+	 * Writeback the entire file and force remove any post-eof blocks. The
+	 * writeback prevents changes to the extent list via concurrent
+	 * writeback and the eofblocks trim prevents the extent shift algorithm
+	 * from running into a post-eof delalloc extent.
+	 *
+	 * XXX: This is a temporary fix until the extent shift loop below is
+	 * converted to use offsets and lookups within the ILOCK rather than
+	 * carrying around the index into the extent list for the next
+	 * iteration.
+	 */
+	error = filemap_write_and_wait(VFS_I(ip)->i_mapping);
+	if (error)
+		return error;
+	if (xfs_can_free_eofblocks(ip, true)) {
+		error = xfs_free_eofblocks(mp, ip, false);
+		if (error)
+			return error;
+	}
+
 	error = xfs_free_file_space(ip, offset, len);
 	if (error)
 		return error;
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 076b1708d1345..de5368c803f9d 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -291,12 +291,22 @@ xfs_file_read_iter(
 		if (inode->i_mapping->nrpages) {
 			ret = filemap_write_and_wait_range(
 							VFS_I(ip)->i_mapping,
-							pos, -1);
+							pos, pos + size - 1);
 			if (ret) {
 				xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL);
 				return ret;
 			}
-			truncate_pagecache_range(VFS_I(ip), pos, -1);
+
+			/*
+			 * Invalidate whole pages. This can return an error if
+			 * we fail to invalidate a page, but this should never
+			 * happen on XFS. Warn if it does fail.
+			 */
+			ret = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping,
+					pos >> PAGE_CACHE_SHIFT,
+					(pos + size - 1) >> PAGE_CACHE_SHIFT);
+			WARN_ON_ONCE(ret);
+			ret = 0;
 		}
 		xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL);
 	}
@@ -632,10 +642,19 @@ xfs_file_dio_aio_write(
 
 	if (mapping->nrpages) {
 		ret = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
-						    pos, -1);
+						    pos, pos + count - 1);
 		if (ret)
 			goto out;
-		truncate_pagecache_range(VFS_I(ip), pos, -1);
+		/*
+		 * Invalidate whole pages. This can return an error if
+		 * we fail to invalidate a page, but this should never
+		 * happen on XFS. Warn if it does fail.
+		 */
+		ret = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping,
+					pos >> PAGE_CACHE_SHIFT,
+					(pos + count - 1) >> PAGE_CACHE_SHIFT);
+		WARN_ON_ONCE(ret);
+		ret = 0;
 	}
 
 	/*
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index c7e17de732f3e..12f146fa66043 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -38,60 +38,32 @@ enum gpiod_flags {
 struct gpio_desc *__must_check __gpiod_get(struct device *dev,
 					 const char *con_id,
 					 enum gpiod_flags flags);
-#define __gpiod_get(dev, con_id, flags, ...) __gpiod_get(dev, con_id, flags)
-#define gpiod_get(varargs...) __gpiod_get(varargs, 0)
 struct gpio_desc *__must_check __gpiod_get_index(struct device *dev,
 					       const char *con_id,
 					       unsigned int idx,
 					       enum gpiod_flags flags);
-#define __gpiod_get_index(dev, con_id, index, flags, ...)		\
-	__gpiod_get_index(dev, con_id, index, flags)
-#define gpiod_get_index(varargs...) __gpiod_get_index(varargs, 0)
 struct gpio_desc *__must_check __gpiod_get_optional(struct device *dev,
 						  const char *con_id,
 						  enum gpiod_flags flags);
-#define __gpiod_get_optional(dev, con_id, flags, ...)			\
-	__gpiod_get_optional(dev, con_id, flags)
-#define gpiod_get_optional(varargs...) __gpiod_get_optional(varargs, 0)
 struct gpio_desc *__must_check __gpiod_get_index_optional(struct device *dev,
 							const char *con_id,
 							unsigned int index,
 							enum gpiod_flags flags);
-#define __gpiod_get_index_optional(dev, con_id, index, flags, ...)	\
-	__gpiod_get_index_optional(dev, con_id, index, flags)
-#define gpiod_get_index_optional(varargs...)				\
-	__gpiod_get_index_optional(varargs, 0)
-
 void gpiod_put(struct gpio_desc *desc);
 
 struct gpio_desc *__must_check __devm_gpiod_get(struct device *dev,
 					      const char *con_id,
 					      enum gpiod_flags flags);
-#define __devm_gpiod_get(dev, con_id, flags, ...)			\
-	__devm_gpiod_get(dev, con_id, flags)
-#define devm_gpiod_get(varargs...) __devm_gpiod_get(varargs, 0)
 struct gpio_desc *__must_check __devm_gpiod_get_index(struct device *dev,
 						    const char *con_id,
 						    unsigned int idx,
 						    enum gpiod_flags flags);
-#define __devm_gpiod_get_index(dev, con_id, index, flags, ...)		\
-	__devm_gpiod_get_index(dev, con_id, index, flags)
-#define devm_gpiod_get_index(varargs...) __devm_gpiod_get_index(varargs, 0)
 struct gpio_desc *__must_check __devm_gpiod_get_optional(struct device *dev,
 						       const char *con_id,
 						       enum gpiod_flags flags);
-#define __devm_gpiod_get_optional(dev, con_id, flags, ...)		\
-	__devm_gpiod_get_optional(dev, con_id, flags)
-#define devm_gpiod_get_optional(varargs...)				\
-	__devm_gpiod_get_optional(varargs, 0)
 struct gpio_desc *__must_check
 __devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
 			      unsigned int index, enum gpiod_flags flags);
-#define __devm_gpiod_get_index_optional(dev, con_id, index, flags, ...)	\
-	__devm_gpiod_get_index_optional(dev, con_id, index, flags)
-#define devm_gpiod_get_index_optional(varargs...)			\
-	__devm_gpiod_get_index_optional(varargs, 0)
-
 void devm_gpiod_put(struct device *dev, struct gpio_desc *desc);
 
 int gpiod_get_direction(const struct gpio_desc *desc);
@@ -124,27 +96,31 @@ int desc_to_gpio(const struct gpio_desc *desc);
 
 #else /* CONFIG_GPIOLIB */
 
-static inline struct gpio_desc *__must_check gpiod_get(struct device *dev,
-						       const char *con_id)
+static inline struct gpio_desc *__must_check __gpiod_get(struct device *dev,
+						const char *con_id,
+						enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
-static inline struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
-							     const char *con_id,
-							     unsigned int idx)
+static inline struct gpio_desc *__must_check
+__gpiod_get_index(struct device *dev,
+		  const char *con_id,
+		  unsigned int idx,
+		  enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
 
 static inline struct gpio_desc *__must_check
-gpiod_get_optional(struct device *dev, const char *con_id)
+__gpiod_get_optional(struct device *dev, const char *con_id,
+		     enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
 
 static inline struct gpio_desc *__must_check
-gpiod_get_index_optional(struct device *dev, const char *con_id,
-			 unsigned int index)
+__gpiod_get_index_optional(struct device *dev, const char *con_id,
+			   unsigned int index, enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
@@ -157,28 +133,33 @@ static inline void gpiod_put(struct gpio_desc *desc)
 	WARN_ON(1);
 }
 
-static inline struct gpio_desc *__must_check devm_gpiod_get(struct device *dev,
-							    const char *con_id)
+static inline struct gpio_desc *__must_check
+__devm_gpiod_get(struct device *dev,
+		 const char *con_id,
+		 enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
 static inline
-struct gpio_desc *__must_check devm_gpiod_get_index(struct device *dev,
-						    const char *con_id,
-						    unsigned int idx)
+struct gpio_desc *__must_check
+__devm_gpiod_get_index(struct device *dev,
+		       const char *con_id,
+		       unsigned int idx,
+		       enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
 
 static inline struct gpio_desc *__must_check
-devm_gpiod_get_optional(struct device *dev, const char *con_id)
+__devm_gpiod_get_optional(struct device *dev, const char *con_id,
+			  enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
 
 static inline struct gpio_desc *__must_check
-devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
-			      unsigned int index)
+__devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
+				unsigned int index, enum gpiod_flags flags)
 {
 	return ERR_PTR(-ENOSYS);
 }
@@ -303,9 +284,43 @@ static inline int desc_to_gpio(const struct gpio_desc *desc)
 	return -EINVAL;
 }
 
-
 #endif /* CONFIG_GPIOLIB */
 
+/*
+ * Vararg-hacks! This is done to transition the kernel to always pass
+ * the options flags argument to the below functions. During a transition
+ * phase these vararg macros make both old-and-newstyle code compile,
+ * but when all calls to the elder API are removed, these should go away
+ * and the __gpiod_get() etc functions above be renamed just gpiod_get()
+ * etc.
+ */
+#define __gpiod_get(dev, con_id, flags, ...) __gpiod_get(dev, con_id, flags)
+#define gpiod_get(varargs...) __gpiod_get(varargs, 0)
+#define __gpiod_get_index(dev, con_id, index, flags, ...)		\
+	__gpiod_get_index(dev, con_id, index, flags)
+#define gpiod_get_index(varargs...) __gpiod_get_index(varargs, 0)
+#define __gpiod_get_optional(dev, con_id, flags, ...)			\
+	__gpiod_get_optional(dev, con_id, flags)
+#define gpiod_get_optional(varargs...) __gpiod_get_optional(varargs, 0)
+#define __gpiod_get_index_optional(dev, con_id, index, flags, ...)	\
+	__gpiod_get_index_optional(dev, con_id, index, flags)
+#define gpiod_get_index_optional(varargs...)				\
+	__gpiod_get_index_optional(varargs, 0)
+#define __devm_gpiod_get(dev, con_id, flags, ...)			\
+	__devm_gpiod_get(dev, con_id, flags)
+#define devm_gpiod_get(varargs...) __devm_gpiod_get(varargs, 0)
+#define __devm_gpiod_get_index(dev, con_id, index, flags, ...)		\
+	__devm_gpiod_get_index(dev, con_id, index, flags)
+#define devm_gpiod_get_index(varargs...) __devm_gpiod_get_index(varargs, 0)
+#define __devm_gpiod_get_optional(dev, con_id, flags, ...)		\
+	__devm_gpiod_get_optional(dev, con_id, flags)
+#define devm_gpiod_get_optional(varargs...)				\
+	__devm_gpiod_get_optional(varargs, 0)
+#define __devm_gpiod_get_index_optional(dev, con_id, index, flags, ...)	\
+	__devm_gpiod_get_index_optional(dev, con_id, index, flags)
+#define devm_gpiod_get_index_optional(varargs...)			\
+	__devm_gpiod_get_index_optional(varargs, 0)
+
 #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
 
 int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 3083c53e02704..c300db3ae2852 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -949,7 +949,7 @@ static inline int jedec_feature(struct nand_chip *chip)
 		: 0;
 }
 
-/**
+/*
  * struct nand_sdr_timings - SDR NAND chip timings
  *
  * This struct defines the timing requirements of a SDR NAND chip.
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index bbe03a1924c04..4efa1ed8a2b0b 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -218,6 +218,8 @@ enum regulator_type {
  * @linear_min_sel: Minimal selector for starting linear mapping
  * @fixed_uV: Fixed voltage of rails.
  * @ramp_delay: Time to settle down after voltage change (unit: uV/us)
+ * @linear_ranges: A constant table of possible voltage ranges.
+ * @n_linear_ranges: Number of entries in the @linear_ranges table.
  * @volt_table: Voltage mapping table (if table based mapping)
  *
  * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 730e638c55899..0b08d05d470b5 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -85,6 +85,7 @@ struct regulator_state {
  *           bootloader then it will be enabled when the constraints are
  *           applied.
  * @apply_uV: Apply the voltage constraint when initialising.
+ * @ramp_disable: Disable ramp delay when initialising or when setting voltage.
  *
  * @input_uV: Input voltage for regulator when supplied by another regulator.
  *
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index ec4dcf1b9562b..085dc6d2f8763 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2534,6 +2534,8 @@ static int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask,
 	unsigned long long size;
 	int ret = 0;
 
+	if (mem_cgroup_is_root(memcg))
+		goto done;
 retry:
 	if (consume_stock(memcg, nr_pages))
 		goto done;
@@ -2611,9 +2613,7 @@ nomem:
 	if (!(gfp_mask & __GFP_NOFAIL))
 		return -ENOMEM;
 bypass:
-	memcg = root_mem_cgroup;
-	ret = -EINTR;
-	goto retry;
+	return -EINTR;
 
 done_restock:
 	if (batch > nr_pages)
@@ -2626,6 +2626,9 @@ static void cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages)
 {
 	unsigned long bytes = nr_pages * PAGE_SIZE;
 
+	if (mem_cgroup_is_root(memcg))
+		return;
+
 	res_counter_uncharge(&memcg->res, bytes);
 	if (do_swap_account)
 		res_counter_uncharge(&memcg->memsw, bytes);
@@ -2640,6 +2643,9 @@ static void __mem_cgroup_cancel_local_charge(struct mem_cgroup *memcg,
 {
 	unsigned long bytes = nr_pages * PAGE_SIZE;
 
+	if (mem_cgroup_is_root(memcg))
+		return;
+
 	res_counter_uncharge_until(&memcg->res, memcg->res.parent, bytes);
 	if (do_swap_account)
 		res_counter_uncharge_until(&memcg->memsw,
@@ -4093,6 +4099,46 @@ out:
 	return retval;
 }
 
+static unsigned long mem_cgroup_recursive_stat(struct mem_cgroup *memcg,
+					       enum mem_cgroup_stat_index idx)
+{
+	struct mem_cgroup *iter;
+	long val = 0;
+
+	/* Per-cpu values can be negative, use a signed accumulator */
+	for_each_mem_cgroup_tree(iter, memcg)
+		val += mem_cgroup_read_stat(iter, idx);
+
+	if (val < 0) /* race ? */
+		val = 0;
+	return val;
+}
+
+static inline u64 mem_cgroup_usage(struct mem_cgroup *memcg, bool swap)
+{
+	u64 val;
+
+	if (!mem_cgroup_is_root(memcg)) {
+		if (!swap)
+			return res_counter_read_u64(&memcg->res, RES_USAGE);
+		else
+			return res_counter_read_u64(&memcg->memsw, RES_USAGE);
+	}
+
+	/*
+	 * Transparent hugepages are still accounted for in MEM_CGROUP_STAT_RSS
+	 * as well as in MEM_CGROUP_STAT_RSS_HUGE.
+	 */
+	val = mem_cgroup_recursive_stat(memcg, MEM_CGROUP_STAT_CACHE);
+	val += mem_cgroup_recursive_stat(memcg, MEM_CGROUP_STAT_RSS);
+
+	if (swap)
+		val += mem_cgroup_recursive_stat(memcg, MEM_CGROUP_STAT_SWAP);
+
+	return val << PAGE_SHIFT;
+}
+
+
 static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
 			       struct cftype *cft)
 {
@@ -4102,8 +4148,12 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
 
 	switch (type) {
 	case _MEM:
+		if (name == RES_USAGE)
+			return mem_cgroup_usage(memcg, false);
 		return res_counter_read_u64(&memcg->res, name);
 	case _MEMSWAP:
+		if (name == RES_USAGE)
+			return mem_cgroup_usage(memcg, true);
 		return res_counter_read_u64(&memcg->memsw, name);
 	case _KMEM:
 		return res_counter_read_u64(&memcg->kmem, name);
@@ -4572,10 +4622,7 @@ static void __mem_cgroup_threshold(struct mem_cgroup *memcg, bool swap)
 	if (!t)
 		goto unlock;
 
-	if (!swap)
-		usage = res_counter_read_u64(&memcg->res, RES_USAGE);
-	else
-		usage = res_counter_read_u64(&memcg->memsw, RES_USAGE);
+	usage = mem_cgroup_usage(memcg, swap);
 
 	/*
 	 * current_threshold points to threshold just below or equal to usage.
@@ -4673,10 +4720,10 @@ static int __mem_cgroup_usage_register_event(struct mem_cgroup *memcg,
 
 	if (type == _MEM) {
 		thresholds = &memcg->thresholds;
-		usage = res_counter_read_u64(&memcg->res, RES_USAGE);
+		usage = mem_cgroup_usage(memcg, false);
 	} else if (type == _MEMSWAP) {
 		thresholds = &memcg->memsw_thresholds;
-		usage = res_counter_read_u64(&memcg->memsw, RES_USAGE);
+		usage = mem_cgroup_usage(memcg, true);
 	} else
 		BUG();
 
@@ -4762,10 +4809,10 @@ static void __mem_cgroup_usage_unregister_event(struct mem_cgroup *memcg,
 
 	if (type == _MEM) {
 		thresholds = &memcg->thresholds;
-		usage = res_counter_read_u64(&memcg->res, RES_USAGE);
+		usage = mem_cgroup_usage(memcg, false);
 	} else if (type == _MEMSWAP) {
 		thresholds = &memcg->memsw_thresholds;
-		usage = res_counter_read_u64(&memcg->memsw, RES_USAGE);
+		usage = mem_cgroup_usage(memcg, true);
 	} else
 		BUG();
 
@@ -5525,9 +5572,9 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css)
 		 * core guarantees its existence.
 		 */
 	} else {
-		res_counter_init(&memcg->res, &root_mem_cgroup->res);
-		res_counter_init(&memcg->memsw, &root_mem_cgroup->memsw);
-		res_counter_init(&memcg->kmem, &root_mem_cgroup->kmem);
+		res_counter_init(&memcg->res, NULL);
+		res_counter_init(&memcg->memsw, NULL);
+		res_counter_init(&memcg->kmem, NULL);
 		/*
 		 * Deeper hierachy with use_hierarchy == false doesn't make
 		 * much sense so let cgroup subsystem know about this
@@ -5969,8 +6016,9 @@ static void __mem_cgroup_clear_mc(void)
 	/* we must fixup refcnts and charges */
 	if (mc.moved_swap) {
 		/* uncharge swap account from the old cgroup */
-		res_counter_uncharge(&mc.from->memsw,
-				     PAGE_SIZE * mc.moved_swap);
+		if (!mem_cgroup_is_root(mc.from))
+			res_counter_uncharge(&mc.from->memsw,
+					     PAGE_SIZE * mc.moved_swap);
 
 		for (i = 0; i < mc.moved_swap; i++)
 			css_put(&mc.from->css);
@@ -5979,8 +6027,9 @@ static void __mem_cgroup_clear_mc(void)
 		 * we charged both to->res and to->memsw, so we should
 		 * uncharge to->res.
 		 */
-		res_counter_uncharge(&mc.to->res,
-				     PAGE_SIZE * mc.moved_swap);
+		if (!mem_cgroup_is_root(mc.to))
+			res_counter_uncharge(&mc.to->res,
+					     PAGE_SIZE * mc.moved_swap);
 		/* we've already done css_get(mc.to) */
 		mc.moved_swap = 0;
 	}
@@ -6345,7 +6394,8 @@ void mem_cgroup_uncharge_swap(swp_entry_t entry)
 	rcu_read_lock();
 	memcg = mem_cgroup_lookup(id);
 	if (memcg) {
-		res_counter_uncharge(&memcg->memsw, PAGE_SIZE);
+		if (!mem_cgroup_is_root(memcg))
+			res_counter_uncharge(&memcg->memsw, PAGE_SIZE);
 		mem_cgroup_swap_statistics(memcg, false);
 		css_put(&memcg->css);
 	}
@@ -6509,12 +6559,15 @@ static void uncharge_batch(struct mem_cgroup *memcg, unsigned long pgpgout,
 {
 	unsigned long flags;
 
-	if (nr_mem)
-		res_counter_uncharge(&memcg->res, nr_mem * PAGE_SIZE);
-	if (nr_memsw)
-		res_counter_uncharge(&memcg->memsw, nr_memsw * PAGE_SIZE);
-
-	memcg_oom_recover(memcg);
+	if (!mem_cgroup_is_root(memcg)) {
+		if (nr_mem)
+			res_counter_uncharge(&memcg->res,
+					     nr_mem * PAGE_SIZE);
+		if (nr_memsw)
+			res_counter_uncharge(&memcg->memsw,
+					     nr_memsw * PAGE_SIZE);
+		memcg_oom_recover(memcg);
+	}
 
 	local_irq_save(flags);
 	__this_cpu_sub(memcg->stat->count[MEM_CGROUP_STAT_RSS], nr_anon);