Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Documentation/ABI/stable/sysfs-bus-xen-backend

@@ -73,3 +73,12 @@ KernelVersion:	3.0
 Contact:	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
 Description:
                 Number of sectors written by the frontend.
+
+What:		/sys/bus/xen-backend/devices/*/state
+Date:		August 2018
+KernelVersion:	4.19
+Contact:	Joe Jin <joe.jin@oracle.com>
+Description:
+                The state of the device. One of: 'Unknown',
+                'Initialising', 'Initialised', 'Connected', 'Closing',
+                'Closed', 'Reconfiguring', 'Reconfigured'.

Documentation/ABI/testing/sysfs-driver-xen-blkback

@@ -15,3 +15,13 @@ Description:
                 blkback. If the frontend tries to use more than
                 max_persistent_grants, the LRU kicks in and starts
                 removing 5% of max_persistent_grants every 100ms.
+
+What:           /sys/module/xen_blkback/parameters/persistent_grant_unused_seconds
+Date:           August 2018
+KernelVersion:  4.19
+Contact:        Roger Pau Monné <roger.pau@citrix.com>
+Description:
+                How long a persistent grant is allowed to remain
+                allocated without being in use. The time is in
+                seconds, 0 means indefinitely long.
+                The default is 60 seconds.

Documentation/arm64/sve.txt

@@ -200,7 +200,7 @@ prctl(PR_SVE_SET_VL, unsigned long arg)
       thread.
 
     * Changing the vector length causes all of P0..P15, FFR and all bits of
-      Z0..V31 except for Z0 bits [127:0] .. Z31 bits [127:0] to become
+      Z0..Z31 except for Z0 bits [127:0] .. Z31 bits [127:0] to become
       unspecified.  Calling PR_SVE_SET_VL with vl equal to the thread's current
       vector length, or calling PR_SVE_SET_VL with the PR_SVE_SET_VL_ONEXEC
       flag, does not constitute a change to the vector length for this purpose.
@@ -500,7 +500,7 @@ References
 [2] arch/arm64/include/uapi/asm/ptrace.h
     AArch64 Linux ptrace ABI definitions
 
-[3] linux/Documentation/arm64/cpu-feature-registers.txt
+[3] Documentation/arm64/cpu-feature-registers.txt
 
 [4] ARM IHI0055C
     http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055c/IHI0055C_beta_aapcs64.pdf

Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.txt

@@ -11,7 +11,7 @@ The RISC-V supervisor ISA manual specifies three interrupt sources that are
 attached to every HLIC: software interrupts, the timer interrupt, and external
 interrupts.  Software interrupts are used to send IPIs between cores.  The
 timer interrupt comes from an architecturally mandated real-time timer that is
-controller via Supervisor Binary Interface (SBI) calls and CSR reads.  External
+controlled via Supervisor Binary Interface (SBI) calls and CSR reads.  External
 interrupts connect all other device interrupts to the HLIC, which are routed
 via the platform-level interrupt controller (PLIC).
 
@@ -25,7 +25,15 @@ in the system.
 
 Required properties:
 - compatible : "riscv,cpu-intc"
-- #interrupt-cells : should be <1>
+- #interrupt-cells : should be <1>.  The interrupt sources are defined by the
+  RISC-V supervisor ISA manual, with only the following three interrupts being
+  defined for supervisor mode:
+    - Source 1 is the supervisor software interrupt, which can be sent by an SBI
+      call and is reserved for use by software.
+    - Source 5 is the supervisor timer interrupt, which can be configured by
+      SBI calls and implements a one-shot timer.
+    - Source 9 is the supervisor external interrupt, which chains to all other
+      device interrupts.
 - interrupt-controller : Identifies the node as an interrupt controller
 
 Furthermore, this interrupt-controller MUST be embedded inside the cpu
@@ -38,7 +46,7 @@ An example device tree entry for a HLIC is show below.
 		...
 		cpu1-intc: interrupt-controller {
 			#interrupt-cells = <1>;
-			compatible = "riscv,cpu-intc", "sifive,fu540-c000-cpu-intc";
+			compatible = "sifive,fu540-c000-cpu-intc", "riscv,cpu-intc";
 			interrupt-controller;
 		};
 	};

Documentation/devicetree/bindings/net/cpsw.txt

@@ -19,6 +19,10 @@ Required properties:
 - slaves		: Specifies number for slaves
 - active_slave		: Specifies the slave to use for time stamping,
 			  ethtool and SIOCGMIIPHY
+- cpsw-phy-sel		: Specifies the phandle to the CPSW phy mode selection
+			  device. See also cpsw-phy-sel.txt for it's binding.
+			  Note that in legacy cases cpsw-phy-sel may be
+			  a child device instead of a phandle.
 
 Optional properties:
 - ti,hwmods		: Must be "cpgmac0"
@@ -75,6 +79,7 @@ Examples:
 		cpts_clock_mult = <0x80000000>;
 		cpts_clock_shift = <29>;
 		syscon = <&cm>;
+		cpsw-phy-sel = <&phy_sel>;
 		cpsw_emac0: slave@0 {
 			phy_id = <&davinci_mdio>, <0>;
 			phy-mode = "rgmii-txid";
@@ -103,6 +108,7 @@ Examples:
 		cpts_clock_mult = <0x80000000>;
 		cpts_clock_shift = <29>;
 		syscon = <&cm>;
+		cpsw-phy-sel = <&phy_sel>;
 		cpsw_emac0: slave@0 {
 			phy_id = <&davinci_mdio>, <0>;
 			phy-mode = "rgmii-txid";

Documentation/devicetree/bindings/net/sh_eth.txt

@@ -16,6 +16,7 @@ Required properties:
 	      "renesas,ether-r8a7794"  if the device is a part of R8A7794 SoC.
 	      "renesas,gether-r8a77980" if the device is a part of R8A77980 SoC.
 	      "renesas,ether-r7s72100" if the device is a part of R7S72100 SoC.
+	      "renesas,ether-r7s9210" if the device is a part of R7S9210 SoC.
 	      "renesas,rcar-gen1-ether" for a generic R-Car Gen1 device.
 	      "renesas,rcar-gen2-ether" for a generic R-Car Gen2 or RZ/G1
 	                                device.

Documentation/devicetree/bindings/watchdog/renesas-wdt.txt

@@ -7,6 +7,7 @@ Required properties:
 	       Examples with soctypes are:
 		 - "renesas,r8a7743-wdt" (RZ/G1M)
 		 - "renesas,r8a7745-wdt" (RZ/G1E)
+		 - "renesas,r8a774a1-wdt" (RZ/G2M)
 	         - "renesas,r8a7790-wdt" (R-Car H2)
 	         - "renesas,r8a7791-wdt" (R-Car M2-W)
 	         - "renesas,r8a7792-wdt" (R-Car V2H)
@@ -21,8 +22,8 @@ Required properties:
 	         - "renesas,r7s72100-wdt" (RZ/A1)
 		The generic compatible string must be:
 		 - "renesas,rza-wdt" for RZ/A
-		 - "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G
-		 - "renesas,rcar-gen3-wdt" for R-Car Gen3
+		 - "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G1
+		 - "renesas,rcar-gen3-wdt" for R-Car Gen3 and RZ/G2
 
 - reg : Should contain WDT registers location and length
 - clocks : the clock feeding the watchdog timer.

Documentation/hwmon/ina2xx

@@ -32,7 +32,7 @@ Supported chips:
     Datasheet: Publicly available at the Texas Instruments website
                http://www.ti.com/
 
-Author: Lothar Felten <l-felten@ti.com>
+Author: Lothar Felten <lothar.felten@gmail.com>
 
 Description
 -----------

Documentation/i2c/DMA-considerations

@@ -50,10 +50,14 @@ bounce buffer. But you don't need to care about that detail, just use the
 returned buffer. If NULL is returned, the threshold was not met or a bounce
 buffer could not be allocated. Fall back to PIO in that case.
 
-In any case, a buffer obtained from above needs to be released. It ensures data
-is copied back to the message and a potentially used bounce buffer is freed::
+In any case, a buffer obtained from above needs to be released. Another helper
+function ensures a potentially used bounce buffer is freed::
 
-	i2c_release_dma_safe_msg_buf(msg, dma_buf);
+	i2c_put_dma_safe_msg_buf(dma_buf, msg, xferred);
+
+The last argument 'xferred' controls if the buffer is synced back to the
+message or not. No syncing is needed in cases setting up DMA had an error and
+there was no data transferred.
 
 The bounce buffer handling from the core is generic and simple. It will always
 allocate a new bounce buffer. If you want a more sophisticated handling (e.g.

Makefile

@@ -2,7 +2,7 @@
 VERSION = 4
 PATCHLEVEL = 19
 SUBLEVEL = 0
-EXTRAVERSION = -rc1
+EXTRAVERSION = -rc2
 NAME = Merciless Moray
 
 # *DOCUMENTATION*
@@ -807,6 +807,9 @@ KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
 # disable pointer signed / unsigned warnings in gcc 4.0
 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
 
+# disable stringop warnings in gcc 8+
+KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
+
 # disable invalid "can't wrap" optimizations for signed / pointers
 KBUILD_CFLAGS	+= $(call cc-option,-fno-strict-overflow)
 

arch/arm/boot/dts/am4372.dtsi

@@ -469,6 +469,7 @@
 			ti,hwmods = "rtc";
 			clocks = <&clk_32768_ck>;
 			clock-names = "int-clk";
+			system-power-controller;
 			status = "disabled";
 		};
 

arch/arm/boot/dts/imx23-evk.dts

@@ -13,6 +13,43 @@
 		reg = <0x40000000 0x08000000>;
 	};
 
+	reg_vddio_sd0: regulator-vddio-sd0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vddio-sd0";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio1 29 0>;
+	};
+
+	reg_lcd_3v3: regulator-lcd-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "lcd-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio1 18 0>;
+		enable-active-high;
+	};
+
+	reg_lcd_5v: regulator-lcd-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "lcd-5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	panel {
+		compatible = "sii,43wvf1g";
+		backlight = <&backlight_display>;
+		dvdd-supply = <&reg_lcd_3v3>;
+		avdd-supply = <&reg_lcd_5v>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&display_out>;
+			};
+		};
+	};
+
 	apb@80000000 {
 		apbh@80000000 {
 			gpmi-nand@8000c000 {
@@ -52,31 +89,11 @@
 			lcdif@80030000 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&lcdif_24bit_pins_a>;
-				lcd-supply = <&reg_lcd_3v3>;
-				display = <&display0>;
 				status = "okay";
 
-				display0: display0 {
-					bits-per-pixel = <32>;
-					bus-width = <24>;
-
-					display-timings {
-						native-mode = <&timing0>;
-						timing0: timing0 {
-							clock-frequency = <9200000>;
-							hactive = <480>;
-							vactive = <272>;
-							hback-porch = <15>;
-							hfront-porch = <8>;
-							vback-porch = <12>;
-							vfront-porch = <4>;
-							hsync-len = <1>;
-							vsync-len = <1>;
-							hsync-active = <0>;
-							vsync-active = <0>;
-							de-active = <1>;
-							pixelclk-active = <0>;
-						};
+				port {
+					display_out: endpoint {
+						remote-endpoint = <&panel_in>;
 					};
 				};
 			};
@@ -118,32 +135,7 @@
 		};
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		reg_vddio_sd0: regulator@0 {
-			compatible = "regulator-fixed";
-			reg = <0>;
-			regulator-name = "vddio-sd0";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			gpio = <&gpio1 29 0>;
-		};
-
-		reg_lcd_3v3: regulator@1 {
-			compatible = "regulator-fixed";
-			reg = <1>;
-			regulator-name = "lcd-3v3";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			gpio = <&gpio1 18 0>;
-			enable-active-high;
-		};
-	};
-
-	backlight {
+	backlight_display: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pwm 2 5000000>;
 		brightness-levels = <0 4 8 16 32 64 128 255>;

arch/arm/boot/dts/imx28-evk.dts

@@ -13,6 +13,87 @@
 		reg = <0x40000000 0x08000000>;
 	};
 
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "3P3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	reg_vddio_sd0: regulator-vddio-sd0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vddio-sd0";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio3 28 0>;
+	};
+
+	reg_fec_3v3: regulator-fec-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "fec-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio2 15 0>;
+	};
+
+	reg_usb0_vbus: regulator-usb0-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb0_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio3 9 0>;
+		enable-active-high;
+	};
+
+	reg_usb1_vbus: regulator-usb1-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb1_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio3 8 0>;
+		enable-active-high;
+	};
+
+	reg_lcd_3v3: regulator-lcd-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "lcd-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio3 30 0>;
+		enable-active-high;
+	};
+
+	reg_can_3v3: regulator-can-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "can-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio2 13 0>;
+		enable-active-high;
+	};
+
+	reg_lcd_5v: regulator-lcd-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "lcd-5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	panel {
+		compatible = "sii,43wvf1g";
+		backlight = <&backlight_display>;
+		dvdd-supply = <&reg_lcd_3v3>;
+		avdd-supply = <&reg_lcd_5v>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&display_out>;
+			};
+		};
+	};
+
 	apb@80000000 {
 		apbh@80000000 {
 			gpmi-nand@8000c000 {
@@ -116,31 +197,11 @@
 				pinctrl-names = "default";
 				pinctrl-0 = <&lcdif_24bit_pins_a
 					     &lcdif_pins_evk>;
-				lcd-supply = <&reg_lcd_3v3>;
-				display = <&display0>;
 				status = "okay";
 
-				display0: display0 {
-					bits-per-pixel = <32>;
-					bus-width = <24>;
-
-					display-timings {
-						native-mode = <&timing0>;
-						timing0: timing0 {
-							clock-frequency = <33500000>;
-							hactive = <800>;
-							vactive = <480>;
-							hback-porch = <89>;
-							hfront-porch = <164>;
-							vback-porch = <23>;
-							vfront-porch = <10>;
-							hsync-len = <10>;
-							vsync-len = <10>;
-							hsync-active = <0>;
-							vsync-active = <0>;
-							de-active = <1>;
-							pixelclk-active = <0>;
-						};
+				port {
+					display_out: endpoint {
+						remote-endpoint = <&panel_in>;
 					};
 				};
 			};
@@ -269,80 +330,6 @@
 		};
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		reg_3p3v: regulator@0 {
-			compatible = "regulator-fixed";
-			reg = <0>;
-			regulator-name = "3P3V";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			regulator-always-on;
-		};
-
-		reg_vddio_sd0: regulator@1 {
-			compatible = "regulator-fixed";
-			reg = <1>;
-			regulator-name = "vddio-sd0";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			gpio = <&gpio3 28 0>;
-		};
-
-		reg_fec_3v3: regulator@2 {
-			compatible = "regulator-fixed";
-			reg = <2>;
-			regulator-name = "fec-3v3";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			gpio = <&gpio2 15 0>;
-		};
-
-		reg_usb0_vbus: regulator@3 {
-			compatible = "regulator-fixed";
-			reg = <3>;
-			regulator-name = "usb0_vbus";
-			regulator-min-microvolt = <5000000>;
-			regulator-max-microvolt = <5000000>;
-			gpio = <&gpio3 9 0>;
-			enable-active-high;
-		};
-
-		reg_usb1_vbus: regulator@4 {
-			compatible = "regulator-fixed";
-			reg = <4>;
-			regulator-name = "usb1_vbus";
-			regulator-min-microvolt = <5000000>;
-			regulator-max-microvolt = <5000000>;
-			gpio = <&gpio3 8 0>;
-			enable-active-high;
-		};
-
-		reg_lcd_3v3: regulator@5 {
-			compatible = "regulator-fixed";
-			reg = <5>;
-			regulator-name = "lcd-3v3";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			gpio = <&gpio3 30 0>;
-			enable-active-high;
-		};
-
-		reg_can_3v3: regulator@6 {
-			compatible = "regulator-fixed";
-			reg = <6>;
-			regulator-name = "can-3v3";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			gpio = <&gpio2 13 0>;
-			enable-active-high;
-		};
-
-	};
-
 	sound {
 		compatible = "fsl,imx28-evk-sgtl5000",
 			     "fsl,mxs-audio-sgtl5000";
@@ -363,7 +350,7 @@
 		};
 	};
 
-	backlight {
+	backlight_display: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pwm 2 5000000>;
 		brightness-levels = <0 4 8 16 32 64 128 255>;

arch/arm/boot/dts/imx7d.dtsi

@@ -126,10 +126,14 @@
 		interrupt-names = "msi";
 		#interrupt-cells = <1>;
 		interrupt-map-mask = <0 0 0 0x7>;
-		interrupt-map = <0 0 0 1 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
-				<0 0 0 2 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
-				<0 0 0 3 &intc GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
-				<0 0 0 4 &intc GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+		/*
+		 * Reference manual lists pci irqs incorrectly
+		 * Real hardware ordering is same as imx6: D+MSI, C, B, A
+		 */
+		interrupt-map = <0 0 0 1 &intc GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+				<0 0 0 2 &intc GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+				<0 0 0 3 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+				<0 0 0 4 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&clks IMX7D_PCIE_CTRL_ROOT_CLK>,
 			 <&clks IMX7D_PLL_ENET_MAIN_100M_CLK>,
 			 <&clks IMX7D_PCIE_PHY_ROOT_CLK>;

arch/arm/boot/dts/omap4-droid4-xt894.dts

@@ -354,7 +354,7 @@
 &mmc2 {
 	vmmc-supply = <&vsdio>;
 	bus-width = <8>;
-	non-removable;
+	ti,non-removable;
 };
 
 &mmc3 {
@@ -621,15 +621,6 @@
 		OMAP4_IOPAD(0x10c, PIN_INPUT | MUX_MODE1)	/* abe_mcbsp3_fsx */
 		>;
 	};
-};
-
-&omap4_pmx_wkup {
-	usb_gpio_mux_sel2: pinmux_usb_gpio_mux_sel2_pins {
-		/* gpio_wk0 */
-		pinctrl-single,pins = <
-		OMAP4_IOPAD(0x040, PIN_OUTPUT_PULLDOWN | MUX_MODE3)
-		>;
-	};
 
 	vibrator_direction_pin: pinmux_vibrator_direction_pin {
 		pinctrl-single,pins = <
@@ -644,6 +635,15 @@
 	};
 };
 
+&omap4_pmx_wkup {
+	usb_gpio_mux_sel2: pinmux_usb_gpio_mux_sel2_pins {
+		/* gpio_wk0 */
+		pinctrl-single,pins = <
+		OMAP4_IOPAD(0x040, PIN_OUTPUT_PULLDOWN | MUX_MODE3)
+		>;
+	};
+};
+
 /*
  * As uart1 is wired to mdm6600 with rts and cts, we can use the cts pin for
  * uart1 wakeirq.

arch/arm/configs/imx_v6_v7_defconfig

@@ -257,6 +257,7 @@ CONFIG_IMX_IPUV3_CORE=y
 CONFIG_DRM=y
 CONFIG_DRM_PANEL_LVDS=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_PANEL_SEIKO_43WVF1G=y
 CONFIG_DRM_DW_HDMI_AHB_AUDIO=m
 CONFIG_DRM_DW_HDMI_CEC=y
 CONFIG_DRM_IMX=y

arch/arm/configs/mxs_defconfig

@@ -95,6 +95,7 @@ CONFIG_MFD_MXS_LRADC=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_DRM=y
+CONFIG_DRM_PANEL_SEIKO_43WVF1G=y
 CONFIG_DRM_MXSFB=y
 CONFIG_FB_MODE_HELPERS=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y

arch/arm/configs/versatile_defconfig

@@ -5,19 +5,19 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_SLAB=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_PARTITION_ADVANCED=y
 # CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_VERSATILE=y
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
-CONFIG_CMA=y
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_CMDLINE="root=1f03 mem=32M"
 CONFIG_FPE_NWFPE=y
 CONFIG_VFP=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_CMA=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@@ -59,6 +59,7 @@ CONFIG_GPIO_PL061=y
 CONFIG_DRM=y
 CONFIG_DRM_PANEL_ARM_VERSATILE=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_DUMB_VGA_DAC=y
 CONFIG_DRM_PL111=y
 CONFIG_FB_MODE_HELPERS=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
@@ -89,9 +90,10 @@ CONFIG_NFSD=y
 CONFIG_NFSD_V3=y
 CONFIG_NLS_CODEPAGE_850=m
 CONFIG_NLS_ISO8859_1=m
+CONFIG_FONTS=y
+CONFIG_FONT_ACORN_8x8=y
+CONFIG_DEBUG_FS=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-CONFIG_FONTS=y
-CONFIG_FONT_ACORN_8x8=y

arch/arm/mach-omap2/omap_hwmod.c

@@ -2160,6 +2160,37 @@ static int of_dev_hwmod_lookup(struct device_node *np,
 	return -ENODEV;
 }
 
+/**
+ * omap_hwmod_fix_mpu_rt_idx - fix up mpu_rt_idx register offsets
+ *
+ * @oh: struct omap_hwmod *
+ * @np: struct device_node *
+ *
+ * Fix up module register offsets for modules with mpu_rt_idx.
+ * Only needed for cpsw with interconnect target module defined
+ * in device tree while still using legacy hwmod platform data
+ * for rev, sysc and syss registers.
+ *
+ * Can be removed when all cpsw hwmod platform data has been
+ * dropped.
+ */
+static void omap_hwmod_fix_mpu_rt_idx(struct omap_hwmod *oh,
+				      struct device_node *np,
+				      struct resource *res)
+{
+	struct device_node *child = NULL;
+	int error;
+
+	child = of_get_next_child(np, child);
+	if (!child)
+		return;
+
+	error = of_address_to_resource(child, oh->mpu_rt_idx, res);
+	if (error)
+		pr_err("%s: error mapping mpu_rt_idx: %i\n",
+		       __func__, error);
+}
+
 /**
  * omap_hwmod_parse_module_range - map module IO range from device tree
  * @oh: struct omap_hwmod *
@@ -2220,7 +2251,13 @@ int omap_hwmod_parse_module_range(struct omap_hwmod *oh,
 	size = be32_to_cpup(ranges);
 
 	pr_debug("omap_hwmod: %s %s at 0x%llx size 0x%llx\n",
-		 oh->name, np->name, base, size);
+		 oh ? oh->name : "", np->name, base, size);
+
+	if (oh && oh->mpu_rt_idx) {
+		omap_hwmod_fix_mpu_rt_idx(oh, np, res);
+
+		return 0;
+	}
 
 	res->start = base;
 	res->end = base + size - 1;

arch/arm64/Kconfig

@@ -763,7 +763,6 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
 
 config HOLES_IN_ZONE
 	def_bool y
-	depends on NUMA
 
 source kernel/Kconfig.hz
 

arch/arm64/configs/defconfig

@@ -38,6 +38,7 @@ CONFIG_ARCH_BCM_IPROC=y
 CONFIG_ARCH_BERLIN=y
 CONFIG_ARCH_BRCMSTB=y
 CONFIG_ARCH_EXYNOS=y
+CONFIG_ARCH_K3=y
 CONFIG_ARCH_LAYERSCAPE=y
 CONFIG_ARCH_LG1K=y
 CONFIG_ARCH_HISI=y
@@ -605,6 +606,8 @@ CONFIG_ARCH_TEGRA_132_SOC=y
 CONFIG_ARCH_TEGRA_210_SOC=y
 CONFIG_ARCH_TEGRA_186_SOC=y
 CONFIG_ARCH_TEGRA_194_SOC=y
+CONFIG_ARCH_K3_AM6_SOC=y
+CONFIG_SOC_TI=y
 CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
 CONFIG_EXTCON_USB_GPIO=y
 CONFIG_EXTCON_USBC_CROS_EC=y

arch/arm64/crypto/ghash-ce-glue.c

@@ -417,7 +417,7 @@ static int gcm_encrypt(struct aead_request *req)
 		__aes_arm64_encrypt(ctx->aes_key.key_enc, tag, iv, nrounds);
 		put_unaligned_be32(2, iv + GCM_IV_SIZE);
 
-		while (walk.nbytes >= AES_BLOCK_SIZE) {
+		while (walk.nbytes >= (2 * AES_BLOCK_SIZE)) {
 			int blocks = walk.nbytes / AES_BLOCK_SIZE;
 			u8 *dst = walk.dst.virt.addr;
 			u8 *src = walk.src.virt.addr;
@@ -437,11 +437,18 @@ static int gcm_encrypt(struct aead_request *req)
 					NULL);
 
 			err = skcipher_walk_done(&walk,
-						 walk.nbytes % AES_BLOCK_SIZE);
+						 walk.nbytes % (2 * AES_BLOCK_SIZE));
 		}
-		if (walk.nbytes)
+		if (walk.nbytes) {
 			__aes_arm64_encrypt(ctx->aes_key.key_enc, ks, iv,
 					    nrounds);
+			if (walk.nbytes > AES_BLOCK_SIZE) {
+				crypto_inc(iv, AES_BLOCK_SIZE);
+				__aes_arm64_encrypt(ctx->aes_key.key_enc,
+					            ks + AES_BLOCK_SIZE, iv,
+						    nrounds);
+			}
+		}
 	}
 
 	/* handle the tail */
@@ -545,7 +552,7 @@ static int gcm_decrypt(struct aead_request *req)
 		__aes_arm64_encrypt(ctx->aes_key.key_enc, tag, iv, nrounds);
 		put_unaligned_be32(2, iv + GCM_IV_SIZE);
 
-		while (walk.nbytes >= AES_BLOCK_SIZE) {
+		while (walk.nbytes >= (2 * AES_BLOCK_SIZE)) {
 			int blocks = walk.nbytes / AES_BLOCK_SIZE;
 			u8 *dst = walk.dst.virt.addr;
 			u8 *src = walk.src.virt.addr;
@@ -564,11 +571,21 @@ static int gcm_decrypt(struct aead_request *req)
 			} while (--blocks > 0);
 
 			err = skcipher_walk_done(&walk,
-						 walk.nbytes % AES_BLOCK_SIZE);
+						 walk.nbytes % (2 * AES_BLOCK_SIZE));
 		}
-		if (walk.nbytes)
+		if (walk.nbytes) {
+			if (walk.nbytes > AES_BLOCK_SIZE) {
+				u8 *iv2 = iv + AES_BLOCK_SIZE;
+
+				memcpy(iv2, iv, AES_BLOCK_SIZE);
+				crypto_inc(iv2, AES_BLOCK_SIZE);
+
+				__aes_arm64_encrypt(ctx->aes_key.key_enc, iv2,
+						    iv2, nrounds);
+			}
 			__aes_arm64_encrypt(ctx->aes_key.key_enc, iv, iv,
 					    nrounds);
+		}
 	}
 
 	/* handle the tail */

arch/arm64/crypto/sm4-ce-glue.c

@@ -69,5 +69,5 @@ static void __exit sm4_ce_mod_fini(void)
 	crypto_unregister_alg(&sm4_ce_alg);
 }
 
-module_cpu_feature_match(SM3, sm4_ce_mod_init);
+module_cpu_feature_match(SM4, sm4_ce_mod_init);
 module_exit(sm4_ce_mod_fini);

arch/m68k/mac/misc.c

@@ -98,11 +98,10 @@ static time64_t pmu_read_time(void)
 
 	if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
 		return 0;
-	while (!req.complete)
-		pmu_poll();
+	pmu_wait_complete(&req);
 
-	time = (u32)((req.reply[1] << 24) | (req.reply[2] << 16) |
-		     (req.reply[3] << 8) | req.reply[4]);
+	time = (u32)((req.reply[0] << 24) | (req.reply[1] << 16) |
+		     (req.reply[2] << 8) | req.reply[3]);
 
 	return time - RTC_OFFSET;
 }
@@ -116,8 +115,7 @@ static void pmu_write_time(time64_t time)
 			(data >> 24) & 0xFF, (data >> 16) & 0xFF,
 			(data >> 8) & 0xFF, data & 0xFF) < 0)
 		return;
-	while (!req.complete)
-		pmu_poll();
+	pmu_wait_complete(&req);
 }
 
 static __u8 pmu_read_pram(int offset)

arch/nios2/Kconfig.debug

@@ -3,15 +3,6 @@
 config TRACE_IRQFLAGS_SUPPORT
 	def_bool y
 
-config DEBUG_STACK_USAGE
-	bool "Enable stack utilization instrumentation"
-	depends on DEBUG_KERNEL
-	help
-	  Enables the display of the minimum amount of free stack which each
-	  task has ever had available in the sysrq-T and sysrq-P debug output.
-
-	  This option will slow down process creation somewhat.
-
 config EARLY_PRINTK
 	bool "Activate early kernel debugging"
 	default y

arch/powerpc/Kconfig

@@ -177,7 +177,6 @@ config PPC
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_MMAP_RND_BITS
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
-	select HAVE_ARCH_PREL32_RELOCATIONS
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_CBPF_JIT			if !PPC64

arch/riscv/include/asm/tlb.h

@@ -14,6 +14,10 @@
 #ifndef _ASM_RISCV_TLB_H
 #define _ASM_RISCV_TLB_H
 
+struct mmu_gather;
+
+static void tlb_flush(struct mmu_gather *tlb);
+
 #include <asm-generic/tlb.h>
 
 static inline void tlb_flush(struct mmu_gather *tlb)

arch/riscv/kernel/sys_riscv.c

@@ -65,24 +65,11 @@ SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
 SYSCALL_DEFINE3(riscv_flush_icache, uintptr_t, start, uintptr_t, end,
 	uintptr_t, flags)
 {
-#ifdef CONFIG_SMP
-	struct mm_struct *mm = current->mm;
-	bool local = (flags & SYS_RISCV_FLUSH_ICACHE_LOCAL) != 0;
-#endif
-
 	/* Check the reserved flags. */
 	if (unlikely(flags & ~SYS_RISCV_FLUSH_ICACHE_ALL))
 		return -EINVAL;
 
-	/*
-	 * Without CONFIG_SMP flush_icache_mm is a just a flush_icache_all(),
-	 * which generates unused variable warnings all over this function.
-	 */
-#ifdef CONFIG_SMP
-	flush_icache_mm(mm, local);
-#else
-	flush_icache_all();
-#endif
+	flush_icache_mm(current->mm, flags & SYS_RISCV_FLUSH_ICACHE_LOCAL);
 
 	return 0;
 }

arch/sparc/kernel/of_device_32.c

@@ -9,6 +9,7 @@
 #include <linux/irq.h>
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
+#include <linux/dma-mapping.h>
 #include <asm/leon.h>
 #include <asm/leon_amba.h>
 
@@ -381,6 +382,9 @@ static struct platform_device * __init scan_one_device(struct device_node *dp,
 	else
 		dev_set_name(&op->dev, "%08x", dp->phandle);
 
+	op->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	op->dev.dma_mask = &op->dev.coherent_dma_mask;
+
 	if (of_device_register(op)) {
 		printk("%s: Could not register of device.\n",
 		       dp->full_name);

arch/sparc/kernel/of_device_64.c

@@ -2,6 +2,7 @@
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/dma-mapping.h>
 #include <linux/init.h>
 #include <linux/export.h>
 #include <linux/mod_devicetable.h>
@@ -675,6 +676,8 @@ static struct platform_device * __init scan_one_device(struct device_node *dp,
 		dev_set_name(&op->dev, "root");
 	else
 		dev_set_name(&op->dev, "%08x", dp->phandle);
+	op->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	op->dev.dma_mask = &op->dev.coherent_dma_mask;
 
 	if (of_device_register(op)) {
 		printk("%s: Could not register of device.\n",

arch/x86/Kconfig

@@ -2843,7 +2843,7 @@ config X86_SYSFB
 	  This option, if enabled, marks VGA/VBE/EFI framebuffers as generic
 	  framebuffers so the new generic system-framebuffer drivers can be
 	  used on x86. If the framebuffer is not compatible with the generic
-	  modes, it is adverticed as fallback platform framebuffer so legacy
+	  modes, it is advertised as fallback platform framebuffer so legacy
 	  drivers like efifb, vesafb and uvesafb can pick it up.
 	  If this option is not selected, all system framebuffers are always
 	  marked as fallback platform framebuffers as usual.

arch/x86/Makefile

@@ -175,22 +175,6 @@ ifdef CONFIG_FUNCTION_GRAPH_TRACER
   endif
 endif
 
-ifndef CC_HAVE_ASM_GOTO
-  $(error Compiler lacks asm-goto support.)
-endif
-
-#
-# Jump labels need '-maccumulate-outgoing-args' for gcc < 4.5.2 to prevent a
-# GCC bug (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46226).  There's no way
-# to test for this bug at compile-time because the test case needs to execute,
-# which is a no-go for cross compilers.  So check the GCC version instead.
-#
-ifdef CONFIG_JUMP_LABEL
-  ifneq ($(ACCUMULATE_OUTGOING_ARGS), 1)
-	ACCUMULATE_OUTGOING_ARGS = $(call cc-if-fullversion, -lt, 040502, 1)
-  endif
-endif
-
 ifeq ($(ACCUMULATE_OUTGOING_ARGS), 1)
 	# This compiler flag is not supported by Clang:
 	KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args,)
@@ -312,6 +296,13 @@ PHONY += vdso_install
 vdso_install:
 	$(Q)$(MAKE) $(build)=arch/x86/entry/vdso $@
 
+archprepare: checkbin
+checkbin:
+ifndef CC_HAVE_ASM_GOTO
+	@echo Compiler lacks asm-goto support.
+	@exit 1
+endif
+
 archclean:
 	$(Q)rm -rf $(objtree)/arch/i386
 	$(Q)rm -rf $(objtree)/arch/x86_64

arch/x86/crypto/aesni-intel_asm.S

@@ -223,34 +223,34 @@ ALL_F:      .octa 0xffffffffffffffffffffffffffffffff
 	pcmpeqd TWOONE(%rip), \TMP2
 	pand	POLY(%rip), \TMP2
 	pxor	\TMP2, \TMP3
-	movdqa	\TMP3, HashKey(%arg2)
+	movdqu	\TMP3, HashKey(%arg2)
 
 	movdqa	   \TMP3, \TMP5
 	pshufd	   $78, \TMP3, \TMP1
 	pxor	   \TMP3, \TMP1
-	movdqa	   \TMP1, HashKey_k(%arg2)
+	movdqu	   \TMP1, HashKey_k(%arg2)
 
 	GHASH_MUL  \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
 # TMP5 = HashKey^2<<1 (mod poly)
-	movdqa	   \TMP5, HashKey_2(%arg2)
+	movdqu	   \TMP5, HashKey_2(%arg2)
 # HashKey_2 = HashKey^2<<1 (mod poly)
 	pshufd	   $78, \TMP5, \TMP1
 	pxor	   \TMP5, \TMP1
-	movdqa	   \TMP1, HashKey_2_k(%arg2)
+	movdqu	   \TMP1, HashKey_2_k(%arg2)
 
 	GHASH_MUL  \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
 # TMP5 = HashKey^3<<1 (mod poly)
-	movdqa	   \TMP5, HashKey_3(%arg2)
+	movdqu	   \TMP5, HashKey_3(%arg2)
 	pshufd	   $78, \TMP5, \TMP1
 	pxor	   \TMP5, \TMP1
-	movdqa	   \TMP1, HashKey_3_k(%arg2)
+	movdqu	   \TMP1, HashKey_3_k(%arg2)
 
 	GHASH_MUL  \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
 # TMP5 = HashKey^3<<1 (mod poly)
-	movdqa	   \TMP5, HashKey_4(%arg2)
+	movdqu	   \TMP5, HashKey_4(%arg2)
 	pshufd	   $78, \TMP5, \TMP1
 	pxor	   \TMP5, \TMP1
-	movdqa	   \TMP1, HashKey_4_k(%arg2)
+	movdqu	   \TMP1, HashKey_4_k(%arg2)
 .endm
 
 # GCM_INIT initializes a gcm_context struct to prepare for encoding/decoding.
@@ -271,7 +271,7 @@ ALL_F:      .octa 0xffffffffffffffffffffffffffffffff
 	movdqu %xmm0, CurCount(%arg2) # ctx_data.current_counter = iv
 
 	PRECOMPUTE \SUBKEY, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
-	movdqa HashKey(%arg2), %xmm13
+	movdqu HashKey(%arg2), %xmm13
 
 	CALC_AAD_HASH %xmm13, \AAD, \AADLEN, %xmm0, %xmm1, %xmm2, %xmm3, \
 	%xmm4, %xmm5, %xmm6
@@ -997,7 +997,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	pshufd	  $78, \XMM5, \TMP6
 	pxor	  \XMM5, \TMP6
 	paddd     ONE(%rip), \XMM0		# INCR CNT
-	movdqa	  HashKey_4(%arg2), \TMP5
+	movdqu	  HashKey_4(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP4           # TMP4 = a1*b1
 	movdqa    \XMM0, \XMM1
 	paddd     ONE(%rip), \XMM0		# INCR CNT
@@ -1016,7 +1016,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	pxor	  (%arg1), \XMM2
 	pxor	  (%arg1), \XMM3
 	pxor	  (%arg1), \XMM4
-	movdqa	  HashKey_4_k(%arg2), \TMP5
+	movdqu	  HashKey_4_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP6           # TMP6 = (a1+a0)*(b1+b0)
 	movaps 0x10(%arg1), \TMP1
 	AESENC	  \TMP1, \XMM1              # Round 1
@@ -1031,7 +1031,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	movdqa	  \XMM6, \TMP1
 	pshufd	  $78, \XMM6, \TMP2
 	pxor	  \XMM6, \TMP2
-	movdqa	  HashKey_3(%arg2), \TMP5
+	movdqu	  HashKey_3(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1           # TMP1 = a1 * b1
 	movaps 0x30(%arg1), \TMP3
 	AESENC    \TMP3, \XMM1              # Round 3
@@ -1044,7 +1044,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	AESENC	  \TMP3, \XMM2
 	AESENC	  \TMP3, \XMM3
 	AESENC	  \TMP3, \XMM4
-	movdqa	  HashKey_3_k(%arg2), \TMP5
+	movdqu	  HashKey_3_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP2           # TMP2 = (a1+a0)*(b1+b0)
 	movaps 0x50(%arg1), \TMP3
 	AESENC	  \TMP3, \XMM1              # Round 5
@@ -1058,7 +1058,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	movdqa	  \XMM7, \TMP1
 	pshufd	  $78, \XMM7, \TMP2
 	pxor	  \XMM7, \TMP2
-	movdqa	  HashKey_2(%arg2), \TMP5
+	movdqu	  HashKey_2(%arg2), \TMP5
 
         # Multiply TMP5 * HashKey using karatsuba
 
@@ -1074,7 +1074,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	AESENC	  \TMP3, \XMM2
 	AESENC	  \TMP3, \XMM3
 	AESENC	  \TMP3, \XMM4
-	movdqa	  HashKey_2_k(%arg2), \TMP5
+	movdqu	  HashKey_2_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP2           # TMP2 = (a1+a0)*(b1+b0)
 	movaps 0x80(%arg1), \TMP3
 	AESENC	  \TMP3, \XMM1             # Round 8
@@ -1092,7 +1092,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	movdqa	  \XMM8, \TMP1
 	pshufd	  $78, \XMM8, \TMP2
 	pxor	  \XMM8, \TMP2
-	movdqa	  HashKey(%arg2), \TMP5
+	movdqu	  HashKey(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1          # TMP1 = a1*b1
 	movaps 0x90(%arg1), \TMP3
 	AESENC	  \TMP3, \XMM1            # Round 9
@@ -1121,7 +1121,7 @@ aes_loop_par_enc_done\@:
 	AESENCLAST \TMP3, \XMM2
 	AESENCLAST \TMP3, \XMM3
 	AESENCLAST \TMP3, \XMM4
-	movdqa    HashKey_k(%arg2), \TMP5
+	movdqu    HashKey_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP2          # TMP2 = (a1+a0)*(b1+b0)
 	movdqu	  (%arg4,%r11,1), \TMP3
 	pxor	  \TMP3, \XMM1                 # Ciphertext/Plaintext XOR EK
@@ -1205,7 +1205,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	pshufd	  $78, \XMM5, \TMP6
 	pxor	  \XMM5, \TMP6
 	paddd     ONE(%rip), \XMM0		# INCR CNT
-	movdqa	  HashKey_4(%arg2), \TMP5
+	movdqu	  HashKey_4(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP4           # TMP4 = a1*b1
 	movdqa    \XMM0, \XMM1
 	paddd     ONE(%rip), \XMM0		# INCR CNT
@@ -1224,7 +1224,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	pxor	  (%arg1), \XMM2
 	pxor	  (%arg1), \XMM3
 	pxor	  (%arg1), \XMM4
-	movdqa	  HashKey_4_k(%arg2), \TMP5
+	movdqu	  HashKey_4_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP6           # TMP6 = (a1+a0)*(b1+b0)
 	movaps 0x10(%arg1), \TMP1
 	AESENC	  \TMP1, \XMM1              # Round 1
@@ -1239,7 +1239,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	movdqa	  \XMM6, \TMP1
 	pshufd	  $78, \XMM6, \TMP2
 	pxor	  \XMM6, \TMP2
-	movdqa	  HashKey_3(%arg2), \TMP5
+	movdqu	  HashKey_3(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1           # TMP1 = a1 * b1
 	movaps 0x30(%arg1), \TMP3
 	AESENC    \TMP3, \XMM1              # Round 3
@@ -1252,7 +1252,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	AESENC	  \TMP3, \XMM2
 	AESENC	  \TMP3, \XMM3
 	AESENC	  \TMP3, \XMM4
-	movdqa	  HashKey_3_k(%arg2), \TMP5
+	movdqu	  HashKey_3_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP2           # TMP2 = (a1+a0)*(b1+b0)
 	movaps 0x50(%arg1), \TMP3
 	AESENC	  \TMP3, \XMM1              # Round 5
@@ -1266,7 +1266,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	movdqa	  \XMM7, \TMP1
 	pshufd	  $78, \XMM7, \TMP2
 	pxor	  \XMM7, \TMP2
-	movdqa	  HashKey_2(%arg2), \TMP5
+	movdqu	  HashKey_2(%arg2), \TMP5
 
         # Multiply TMP5 * HashKey using karatsuba
 
@@ -1282,7 +1282,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	AESENC	  \TMP3, \XMM2
 	AESENC	  \TMP3, \XMM3
 	AESENC	  \TMP3, \XMM4
-	movdqa	  HashKey_2_k(%arg2), \TMP5
+	movdqu	  HashKey_2_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP2           # TMP2 = (a1+a0)*(b1+b0)
 	movaps 0x80(%arg1), \TMP3
 	AESENC	  \TMP3, \XMM1             # Round 8
@@ -1300,7 +1300,7 @@ TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
 	movdqa	  \XMM8, \TMP1
 	pshufd	  $78, \XMM8, \TMP2
 	pxor	  \XMM8, \TMP2
-	movdqa	  HashKey(%arg2), \TMP5
+	movdqu	  HashKey(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1          # TMP1 = a1*b1
 	movaps 0x90(%arg1), \TMP3
 	AESENC	  \TMP3, \XMM1            # Round 9
@@ -1329,7 +1329,7 @@ aes_loop_par_dec_done\@:
 	AESENCLAST \TMP3, \XMM2
 	AESENCLAST \TMP3, \XMM3
 	AESENCLAST \TMP3, \XMM4
-	movdqa    HashKey_k(%arg2), \TMP5
+	movdqu    HashKey_k(%arg2), \TMP5
 	PCLMULQDQ 0x00, \TMP5, \TMP2          # TMP2 = (a1+a0)*(b1+b0)
 	movdqu	  (%arg4,%r11,1), \TMP3
 	pxor	  \TMP3, \XMM1                 # Ciphertext/Plaintext XOR EK
@@ -1405,10 +1405,10 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
 	movdqa	  \XMM1, \TMP6
 	pshufd	  $78, \XMM1, \TMP2
 	pxor	  \XMM1, \TMP2
-	movdqa	  HashKey_4(%arg2), \TMP5
+	movdqu	  HashKey_4(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP6       # TMP6 = a1*b1
 	PCLMULQDQ 0x00, \TMP5, \XMM1       # XMM1 = a0*b0
-	movdqa	  HashKey_4_k(%arg2), \TMP4
+	movdqu	  HashKey_4_k(%arg2), \TMP4
 	PCLMULQDQ 0x00, \TMP4, \TMP2       # TMP2 = (a1+a0)*(b1+b0)
 	movdqa	  \XMM1, \XMMDst
 	movdqa	  \TMP2, \XMM1              # result in TMP6, XMMDst, XMM1
@@ -1418,10 +1418,10 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
 	movdqa	  \XMM2, \TMP1
 	pshufd	  $78, \XMM2, \TMP2
 	pxor	  \XMM2, \TMP2
-	movdqa	  HashKey_3(%arg2), \TMP5
+	movdqu	  HashKey_3(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1       # TMP1 = a1*b1
 	PCLMULQDQ 0x00, \TMP5, \XMM2       # XMM2 = a0*b0
-	movdqa	  HashKey_3_k(%arg2), \TMP4
+	movdqu	  HashKey_3_k(%arg2), \TMP4
 	PCLMULQDQ 0x00, \TMP4, \TMP2       # TMP2 = (a1+a0)*(b1+b0)
 	pxor	  \TMP1, \TMP6
 	pxor	  \XMM2, \XMMDst
@@ -1433,10 +1433,10 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
 	movdqa	  \XMM3, \TMP1
 	pshufd	  $78, \XMM3, \TMP2
 	pxor	  \XMM3, \TMP2
-	movdqa	  HashKey_2(%arg2), \TMP5
+	movdqu	  HashKey_2(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1       # TMP1 = a1*b1
 	PCLMULQDQ 0x00, \TMP5, \XMM3       # XMM3 = a0*b0
-	movdqa	  HashKey_2_k(%arg2), \TMP4
+	movdqu	  HashKey_2_k(%arg2), \TMP4
 	PCLMULQDQ 0x00, \TMP4, \TMP2       # TMP2 = (a1+a0)*(b1+b0)
 	pxor	  \TMP1, \TMP6
 	pxor	  \XMM3, \XMMDst
@@ -1446,10 +1446,10 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
 	movdqa	  \XMM4, \TMP1
 	pshufd	  $78, \XMM4, \TMP2
 	pxor	  \XMM4, \TMP2
-	movdqa	  HashKey(%arg2), \TMP5
+	movdqu	  HashKey(%arg2), \TMP5
 	PCLMULQDQ 0x11, \TMP5, \TMP1	    # TMP1 = a1*b1
 	PCLMULQDQ 0x00, \TMP5, \XMM4       # XMM4 = a0*b0
-	movdqa	  HashKey_k(%arg2), \TMP4
+	movdqu	  HashKey_k(%arg2), \TMP4
 	PCLMULQDQ 0x00, \TMP4, \TMP2       # TMP2 = (a1+a0)*(b1+b0)
 	pxor	  \TMP1, \TMP6
 	pxor	  \XMM4, \XMMDst

arch/x86/events/core.c

@@ -2465,7 +2465,7 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs
 
 	perf_callchain_store(entry, regs->ip);
 
-	if (!current->mm)
+	if (!nmi_uaccess_okay())
 		return;
 
 	if (perf_callchain_user32(regs, entry))

arch/x86/include/asm/irqflags.h

@@ -33,7 +33,8 @@ extern inline unsigned long native_save_fl(void)
 	return flags;
 }
 
-static inline void native_restore_fl(unsigned long flags)
+extern inline void native_restore_fl(unsigned long flags);
+extern inline void native_restore_fl(unsigned long flags)
 {
 	asm volatile("push %0 ; popf"
 		     : /* no output */

arch/x86/include/asm/pgtable-3level.h

@@ -2,6 +2,8 @@
 #ifndef _ASM_X86_PGTABLE_3LEVEL_H
 #define _ASM_X86_PGTABLE_3LEVEL_H
 
+#include <asm/atomic64_32.h>
+
 /*
  * Intel Physical Address Extension (PAE) Mode - three-level page
  * tables on PPro+ CPUs.
@@ -150,10 +152,7 @@ static inline pte_t native_ptep_get_and_clear(pte_t *ptep)
 {
 	pte_t res;
 
-	/* xchg acts as a barrier before the setting of the high bits */
-	res.pte_low = xchg(&ptep->pte_low, 0);
-	res.pte_high = ptep->pte_high;
-	ptep->pte_high = 0;
+	res.pte = (pteval_t)arch_atomic64_xchg((atomic64_t *)ptep, 0);
 
 	return res;
 }

arch/x86/include/asm/processor.h

@@ -132,6 +132,8 @@ struct cpuinfo_x86 {
 	/* Index into per_cpu list: */
 	u16			cpu_index;
 	u32			microcode;
+	/* Address space bits used by the cache internally */
+	u8			x86_cache_bits;
 	unsigned		initialized : 1;
 } __randomize_layout;
 
@@ -183,7 +185,7 @@ extern void cpu_detect(struct cpuinfo_x86 *c);
 
 static inline unsigned long long l1tf_pfn_limit(void)
 {
-	return BIT_ULL(boot_cpu_data.x86_phys_bits - 1 - PAGE_SHIFT);
+	return BIT_ULL(boot_cpu_data.x86_cache_bits - 1 - PAGE_SHIFT);
 }
 
 extern void early_cpu_init(void);

arch/x86/include/asm/signal.h

@@ -39,6 +39,7 @@ extern void do_signal(struct pt_regs *regs);
 
 #define __ARCH_HAS_SA_RESTORER
 
+#include <asm/asm.h>
 #include <uapi/asm/sigcontext.h>
 
 #ifdef __i386__
@@ -86,9 +87,9 @@ static inline int __const_sigismember(sigset_t *set, int _sig)
 
 static inline int __gen_sigismember(sigset_t *set, int _sig)
 {
-	unsigned char ret;
-	asm("btl %2,%1\n\tsetc %0"
-	    : "=qm"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
+	bool ret;
+	asm("btl %2,%1" CC_SET(c)
+	    : CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
 	return ret;
 }
 

arch/x86/include/asm/stacktrace.h

@@ -111,6 +111,6 @@ static inline unsigned long caller_frame_pointer(void)
 	return (unsigned long)frame;
 }
 
-void show_opcodes(u8 *rip, const char *loglvl);
+void show_opcodes(struct pt_regs *regs, const char *loglvl);
 void show_ip(struct pt_regs *regs, const char *loglvl);
 #endif /* _ASM_X86_STACKTRACE_H */

arch/x86/include/asm/tlbflush.h

@@ -175,8 +175,16 @@ struct tlb_state {
 	 * are on.  This means that it may not match current->active_mm,
 	 * which will contain the previous user mm when we're in lazy TLB
 	 * mode even if we've already switched back to swapper_pg_dir.
+	 *
+	 * During switch_mm_irqs_off(), loaded_mm will be set to
+	 * LOADED_MM_SWITCHING during the brief interrupts-off window
+	 * when CR3 and loaded_mm would otherwise be inconsistent.  This
+	 * is for nmi_uaccess_okay()'s benefit.
 	 */
 	struct mm_struct *loaded_mm;
+
+#define LOADED_MM_SWITCHING ((struct mm_struct *)1)
+
 	u16 loaded_mm_asid;
 	u16 next_asid;
 	/* last user mm's ctx id */
@@ -246,6 +254,38 @@ struct tlb_state {
 };
 DECLARE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate);
 
+/*
+ * Blindly accessing user memory from NMI context can be dangerous
+ * if we're in the middle of switching the current user task or
+ * switching the loaded mm.  It can also be dangerous if we
+ * interrupted some kernel code that was temporarily using a
+ * different mm.
+ */
+static inline bool nmi_uaccess_okay(void)
+{
+	struct mm_struct *loaded_mm = this_cpu_read(cpu_tlbstate.loaded_mm);
+	struct mm_struct *current_mm = current->mm;
+
+	VM_WARN_ON_ONCE(!loaded_mm);
+
+	/*
+	 * The condition we want to check is
+	 * current_mm->pgd == __va(read_cr3_pa()).  This may be slow, though,
+	 * if we're running in a VM with shadow paging, and nmi_uaccess_okay()
+	 * is supposed to be reasonably fast.
+	 *
+	 * Instead, we check the almost equivalent but somewhat conservative
+	 * condition below, and we rely on the fact that switch_mm_irqs_off()
+	 * sets loaded_mm to LOADED_MM_SWITCHING before writing to CR3.
+	 */
+	if (loaded_mm != current_mm)
+		return false;
+
+	VM_WARN_ON_ONCE(current_mm->pgd != __va(read_cr3_pa()));
+
+	return true;
+}
+
 /* Initialize cr4 shadow for this CPU. */
 static inline void cr4_init_shadow(void)
 {

arch/x86/include/asm/vgtod.h

@@ -93,7 +93,7 @@ static inline unsigned int __getcpu(void)
 	 *
 	 * If RDPID is available, use it.
 	 */
-	alternative_io ("lsl %[p],%[seg]",
+	alternative_io ("lsl %[seg],%[p]",
 			".byte 0xf3,0x0f,0xc7,0xf8", /* RDPID %eax/rax */
 			X86_FEATURE_RDPID,
 			[p] "=a" (p), [seg] "r" (__PER_CPU_SEG));

arch/x86/kernel/alternative.c

@@ -684,8 +684,6 @@ void *__init_or_module text_poke_early(void *addr, const void *opcode,
  * It means the size must be writable atomically and the address must be aligned
  * in a way that permits an atomic write. It also makes sure we fit on a single
  * page.
- *
- * Note: Must be called under text_mutex.
  */
 void *text_poke(void *addr, const void *opcode, size_t len)
 {
@@ -700,6 +698,8 @@ void *text_poke(void *addr, const void *opcode, size_t len)
 	 */
 	BUG_ON(!after_bootmem);
 
+	lockdep_assert_held(&text_mutex);
+
 	if (!core_kernel_text((unsigned long)addr)) {
 		pages[0] = vmalloc_to_page(addr);
 		pages[1] = vmalloc_to_page(addr + PAGE_SIZE);
@@ -782,8 +782,6 @@ int poke_int3_handler(struct pt_regs *regs)
  *	- replace the first byte (int3) by the first byte of
  *	  replacing opcode
  *	- sync cores
- *
- * Note: must be called under text_mutex.
  */
 void *text_poke_bp(void *addr, const void *opcode, size_t len, void *handler)
 {
@@ -792,6 +790,9 @@ void *text_poke_bp(void *addr, const void *opcode, size_t len, void *handler)
 	bp_int3_handler = handler;
 	bp_int3_addr = (u8 *)addr + sizeof(int3);
 	bp_patching_in_progress = true;
+
+	lockdep_assert_held(&text_mutex);
+
 	/*
 	 * Corresponding read barrier in int3 notifier for making sure the
 	 * in_progress and handler are correctly ordered wrt. patching.

arch/x86/kernel/cpu/bugs.c

@@ -668,6 +668,45 @@ EXPORT_SYMBOL_GPL(l1tf_mitigation);
 enum vmx_l1d_flush_state l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
 EXPORT_SYMBOL_GPL(l1tf_vmx_mitigation);
 
+/*
+ * These CPUs all support 44bits physical address space internally in the
+ * cache but CPUID can report a smaller number of physical address bits.
+ *
+ * The L1TF mitigation uses the top most address bit for the inversion of
+ * non present PTEs. When the installed memory reaches into the top most
+ * address bit due to memory holes, which has been observed on machines
+ * which report 36bits physical address bits and have 32G RAM installed,
+ * then the mitigation range check in l1tf_select_mitigation() triggers.
+ * This is a false positive because the mitigation is still possible due to
+ * the fact that the cache uses 44bit internally. Use the cache bits
+ * instead of the reported physical bits and adjust them on the affected
+ * machines to 44bit if the reported bits are less than 44.
+ */
+static void override_cache_bits(struct cpuinfo_x86 *c)
+{
+	if (c->x86 != 6)
+		return;
+
+	switch (c->x86_model) {
+	case INTEL_FAM6_NEHALEM:
+	case INTEL_FAM6_WESTMERE:
+	case INTEL_FAM6_SANDYBRIDGE:
+	case INTEL_FAM6_IVYBRIDGE:
+	case INTEL_FAM6_HASWELL_CORE:
+	case INTEL_FAM6_HASWELL_ULT:
+	case INTEL_FAM6_HASWELL_GT3E:
+	case INTEL_FAM6_BROADWELL_CORE:
+	case INTEL_FAM6_BROADWELL_GT3E:
+	case INTEL_FAM6_SKYLAKE_MOBILE:
+	case INTEL_FAM6_SKYLAKE_DESKTOP:
+	case INTEL_FAM6_KABYLAKE_MOBILE:
+	case INTEL_FAM6_KABYLAKE_DESKTOP:
+		if (c->x86_cache_bits < 44)
+			c->x86_cache_bits = 44;
+		break;
+	}
+}
+
 static void __init l1tf_select_mitigation(void)
 {
 	u64 half_pa;
@@ -675,6 +714,8 @@ static void __init l1tf_select_mitigation(void)
 	if (!boot_cpu_has_bug(X86_BUG_L1TF))
 		return;
 
+	override_cache_bits(&boot_cpu_data);
+
 	switch (l1tf_mitigation) {
 	case L1TF_MITIGATION_OFF:
 	case L1TF_MITIGATION_FLUSH_NOWARN:
@@ -694,11 +735,6 @@ static void __init l1tf_select_mitigation(void)
 	return;
 #endif
 
-	/*
-	 * This is extremely unlikely to happen because almost all
-	 * systems have far more MAX_PA/2 than RAM can be fit into
-	 * DIMM slots.
-	 */
 	half_pa = (u64)l1tf_pfn_limit() << PAGE_SHIFT;
 	if (e820__mapped_any(half_pa, ULLONG_MAX - half_pa, E820_TYPE_RAM)) {
 		pr_warn("System has more than MAX_PA/2 memory. L1TF mitigation not effective.\n");

arch/x86/kernel/cpu/common.c

@@ -919,6 +919,7 @@ void get_cpu_address_sizes(struct cpuinfo_x86 *c)
 	else if (cpu_has(c, X86_FEATURE_PAE) || cpu_has(c, X86_FEATURE_PSE36))
 		c->x86_phys_bits = 36;
 #endif
+	c->x86_cache_bits = c->x86_phys_bits;
 }
 
 static void identify_cpu_without_cpuid(struct cpuinfo_x86 *c)

arch/x86/kernel/cpu/intel.c

@@ -150,6 +150,9 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c)
 	if (cpu_has(c, X86_FEATURE_HYPERVISOR))
 		return false;
 
+	if (c->x86 != 6)
+		return false;
+
 	for (i = 0; i < ARRAY_SIZE(spectre_bad_microcodes); i++) {
 		if (c->x86_model == spectre_bad_microcodes[i].model &&
 		    c->x86_stepping == spectre_bad_microcodes[i].stepping)

arch/x86/kernel/dumpstack.c

@@ -17,6 +17,7 @@
 #include <linux/bug.h>
 #include <linux/nmi.h>
 #include <linux/sysfs.h>
+#include <linux/kasan.h>
 
 #include <asm/cpu_entry_area.h>
 #include <asm/stacktrace.h>
@@ -89,14 +90,24 @@ static void printk_stack_address(unsigned long address, int reliable,
  * Thus, the 2/3rds prologue and 64 byte OPCODE_BUFSIZE is just a random
  * guesstimate in attempt to achieve all of the above.
  */
-void show_opcodes(u8 *rip, const char *loglvl)
+void show_opcodes(struct pt_regs *regs, const char *loglvl)
 {
 #define PROLOGUE_SIZE 42
 #define EPILOGUE_SIZE 21
 #define OPCODE_BUFSIZE (PROLOGUE_SIZE + 1 + EPILOGUE_SIZE)
 	u8 opcodes[OPCODE_BUFSIZE];
+	unsigned long prologue = regs->ip - PROLOGUE_SIZE;
+	bool bad_ip;
 
-	if (probe_kernel_read(opcodes, rip - PROLOGUE_SIZE, OPCODE_BUFSIZE)) {
+	/*
+	 * Make sure userspace isn't trying to trick us into dumping kernel
+	 * memory by pointing the userspace instruction pointer at it.
+	 */
+	bad_ip = user_mode(regs) &&
+		__chk_range_not_ok(prologue, OPCODE_BUFSIZE, TASK_SIZE_MAX);
+
+	if (bad_ip || probe_kernel_read(opcodes, (u8 *)prologue,
+					OPCODE_BUFSIZE)) {
 		printk("%sCode: Bad RIP value.\n", loglvl);
 	} else {
 		printk("%sCode: %" __stringify(PROLOGUE_SIZE) "ph <%02x> %"
@@ -112,7 +123,7 @@ void show_ip(struct pt_regs *regs, const char *loglvl)
 #else
 	printk("%sRIP: %04x:%pS\n", loglvl, (int)regs->cs, (void *)regs->ip);
 #endif
-	show_opcodes((u8 *)regs->ip, loglvl);
+	show_opcodes(regs, loglvl);
 }
 
 void show_iret_regs(struct pt_regs *regs)
@@ -346,7 +357,10 @@ void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
 	 * We're not going to return, but we might be on an IST stack or
 	 * have very little stack space left.  Rewind the stack and kill
 	 * the task.
+	 * Before we rewind the stack, we have to tell KASAN that we're going to
+	 * reuse the task stack and that existing poisons are invalid.
 	 */
+	kasan_unpoison_task_stack(current);
 	rewind_stack_do_exit(signr);
 }
 NOKPROBE_SYMBOL(oops_end);

arch/x86/lib/usercopy.c

@@ -7,6 +7,8 @@
 #include <linux/uaccess.h>
 #include <linux/export.h>
 
+#include <asm/tlbflush.h>
+
 /*
  * We rely on the nested NMI work to allow atomic faults from the NMI path; the
  * nested NMI paths are careful to preserve CR2.
@@ -19,6 +21,9 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
 	if (__range_not_ok(from, n, TASK_SIZE))
 		return n;
 
+	if (!nmi_uaccess_okay())
+		return n;
+
 	/*
 	 * Even though this function is typically called from NMI/IRQ context
 	 * disable pagefaults so that its behaviour is consistent even when

arch/x86/mm/fault.c

@@ -837,7 +837,7 @@ show_signal_msg(struct pt_regs *regs, unsigned long error_code,
 
 	printk(KERN_CONT "\n");
 
-	show_opcodes((u8 *)regs->ip, loglvl);
+	show_opcodes(regs, loglvl);
 }
 
 static void

arch/x86/mm/pageattr.c

@@ -1420,6 +1420,29 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
 	return 0;
 }
 
+/*
+ * Machine check recovery code needs to change cache mode of poisoned
+ * pages to UC to avoid speculative access logging another error. But
+ * passing the address of the 1:1 mapping to set_memory_uc() is a fine
+ * way to encourage a speculative access. So we cheat and flip the top
+ * bit of the address. This works fine for the code that updates the
+ * page tables. But at the end of the process we need to flush the cache
+ * and the non-canonical address causes a #GP fault when used by the
+ * CLFLUSH instruction.
+ *
+ * But in the common case we already have a canonical address. This code
+ * will fix the top bit if needed and is a no-op otherwise.
+ */
+static inline unsigned long make_addr_canonical_again(unsigned long addr)
+{
+#ifdef CONFIG_X86_64
+	return (long)(addr << 1) >> 1;
+#else
+	return addr;
+#endif
+}
+
+
 static int change_page_attr_set_clr(unsigned long *addr, int numpages,
 				    pgprot_t mask_set, pgprot_t mask_clr,
 				    int force_split, int in_flag,
@@ -1465,7 +1488,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
 		 * Save address for cache flush. *addr is modified in the call
 		 * to __change_page_attr_set_clr() below.
 		 */
-		baddr = *addr;
+		baddr = make_addr_canonical_again(*addr);
 	}
 
 	/* Must avoid aliasing mappings in the highmem code */

arch/x86/mm/pti.c

@@ -248,7 +248,7 @@ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address)
  *
  * Returns a pointer to a PTE on success, or NULL on failure.
  */
-static __init pte_t *pti_user_pagetable_walk_pte(unsigned long address)
+static pte_t *pti_user_pagetable_walk_pte(unsigned long address)
 {
 	gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
 	pmd_t *pmd;

arch/x86/mm/tlb.c

@@ -305,6 +305,10 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
 
 		choose_new_asid(next, next_tlb_gen, &new_asid, &need_flush);
 
+		/* Let nmi_uaccess_okay() know that we're changing CR3. */
+		this_cpu_write(cpu_tlbstate.loaded_mm, LOADED_MM_SWITCHING);
+		barrier();
+
 		if (need_flush) {
 			this_cpu_write(cpu_tlbstate.ctxs[new_asid].ctx_id, next->context.ctx_id);
 			this_cpu_write(cpu_tlbstate.ctxs[new_asid].tlb_gen, next_tlb_gen);
@@ -335,6 +339,9 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
 		if (next != &init_mm)
 			this_cpu_write(cpu_tlbstate.last_ctx_id, next->context.ctx_id);
 
+		/* Make sure we write CR3 before loaded_mm. */
+		barrier();
+
 		this_cpu_write(cpu_tlbstate.loaded_mm, next);
 		this_cpu_write(cpu_tlbstate.loaded_mm_asid, new_asid);
 	}

arch/x86/platform/efi/efi_32.c

@@ -85,14 +85,10 @@ pgd_t * __init efi_call_phys_prolog(void)
 
 void __init efi_call_phys_epilog(pgd_t *save_pgd)
 {
-	struct desc_ptr gdt_descr;
-
-	gdt_descr.address = (unsigned long)get_cpu_gdt_rw(0);
-	gdt_descr.size = GDT_SIZE - 1;
-	load_gdt(&gdt_descr);
-
 	load_cr3(save_pgd);
 	__flush_tlb_all();
+
+	load_fixmap_gdt(0);
 }
 
 void __init efi_runtime_update_mappings(void)

arch/x86/xen/mmu_pv.c

@@ -435,14 +435,13 @@ static void xen_set_pud(pud_t *ptr, pud_t val)
 static void xen_set_pte_atomic(pte_t *ptep, pte_t pte)
 {
 	trace_xen_mmu_set_pte_atomic(ptep, pte);
-	set_64bit((u64 *)ptep, native_pte_val(pte));
+	__xen_set_pte(ptep, pte);
 }
 
 static void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	trace_xen_mmu_pte_clear(mm, addr, ptep);
-	if (!xen_batched_set_pte(ptep, native_make_pte(0)))
-		native_pte_clear(mm, addr, ptep);
+	__xen_set_pte(ptep, native_make_pte(0));
 }
 
 static void xen_pmd_clear(pmd_t *pmdp)
@@ -1570,7 +1569,7 @@ static void __init xen_set_pte_init(pte_t *ptep, pte_t pte)
 		pte = __pte_ma(((pte_val_ma(*ptep) & _PAGE_RW) | ~_PAGE_RW) &
 			       pte_val_ma(pte));
 #endif
-	native_set_pte(ptep, pte);
+	__xen_set_pte(ptep, pte);
 }
 
 /* Early in boot, while setting up the initial pagetable, assume
@@ -2061,7 +2060,6 @@ void __init xen_relocate_p2m(void)
 	pud_t *pud;
 	pgd_t *pgd;
 	unsigned long *new_p2m;
-	int save_pud;
 
 	size = PAGE_ALIGN(xen_start_info->nr_pages * sizeof(unsigned long));
 	n_pte = roundup(size, PAGE_SIZE) >> PAGE_SHIFT;
@@ -2091,7 +2089,6 @@ void __init xen_relocate_p2m(void)
 
 	pgd = __va(read_cr3_pa());
 	new_p2m = (unsigned long *)(2 * PGDIR_SIZE);
-	save_pud = n_pud;
 	for (idx_pud = 0; idx_pud < n_pud; idx_pud++) {
 		pud = early_memremap(pud_phys, PAGE_SIZE);
 		clear_page(pud);

block/blk-wbt.c

@@ -123,16 +123,11 @@ static void rwb_wake_all(struct rq_wb *rwb)
 	}
 }
 
-static void __wbt_done(struct rq_qos *rqos, enum wbt_flags wb_acct)
+static void wbt_rqw_done(struct rq_wb *rwb, struct rq_wait *rqw,
+			 enum wbt_flags wb_acct)
 {
-	struct rq_wb *rwb = RQWB(rqos);
-	struct rq_wait *rqw;
 	int inflight, limit;
 
-	if (!(wb_acct & WBT_TRACKED))
-		return;
-
-	rqw = get_rq_wait(rwb, wb_acct);
 	inflight = atomic_dec_return(&rqw->inflight);
 
 	/*
@@ -166,10 +161,22 @@ static void __wbt_done(struct rq_qos *rqos, enum wbt_flags wb_acct)
 		int diff = limit - inflight;
 
 		if (!inflight || diff >= rwb->wb_background / 2)
-			wake_up(&rqw->wait);
+			wake_up_all(&rqw->wait);
 	}
 }
 
+static void __wbt_done(struct rq_qos *rqos, enum wbt_flags wb_acct)
+{
+	struct rq_wb *rwb = RQWB(rqos);
+	struct rq_wait *rqw;
+
+	if (!(wb_acct & WBT_TRACKED))
+		return;
+
+	rqw = get_rq_wait(rwb, wb_acct);
+	wbt_rqw_done(rwb, rqw, wb_acct);
+}
+
 /*
  * Called on completion of a request. Note that it's also called when
  * a request is merged, when the request gets freed.
@@ -481,6 +488,34 @@ static inline unsigned int get_limit(struct rq_wb *rwb, unsigned long rw)
 	return limit;
 }
 
+struct wbt_wait_data {
+	struct wait_queue_entry wq;
+	struct task_struct *task;
+	struct rq_wb *rwb;
+	struct rq_wait *rqw;
+	unsigned long rw;
+	bool got_token;
+};
+
+static int wbt_wake_function(struct wait_queue_entry *curr, unsigned int mode,
+			     int wake_flags, void *key)
+{
+	struct wbt_wait_data *data = container_of(curr, struct wbt_wait_data,
+							wq);
+
+	/*
+	 * If we fail to get a budget, return -1 to interrupt the wake up
+	 * loop in __wake_up_common.
+	 */
+	if (!rq_wait_inc_below(data->rqw, get_limit(data->rwb, data->rw)))
+		return -1;
+
+	data->got_token = true;
+	list_del_init(&curr->entry);
+	wake_up_process(data->task);
+	return 1;
+}
+
 /*
  * Block if we will exceed our limit, or if we are currently waiting for
  * the timer to kick off queuing again.
@@ -491,31 +526,52 @@ static void __wbt_wait(struct rq_wb *rwb, enum wbt_flags wb_acct,
 	__acquires(lock)
 {
 	struct rq_wait *rqw = get_rq_wait(rwb, wb_acct);
-	DECLARE_WAITQUEUE(wait, current);
+	struct wbt_wait_data data = {
+		.wq = {
+			.func	= wbt_wake_function,
+			.entry	= LIST_HEAD_INIT(data.wq.entry),
+		},
+		.task = current,
+		.rwb = rwb,
+		.rqw = rqw,
+		.rw = rw,
+	};
 	bool has_sleeper;
 
 	has_sleeper = wq_has_sleeper(&rqw->wait);
 	if (!has_sleeper && rq_wait_inc_below(rqw, get_limit(rwb, rw)))
 		return;
 
-	add_wait_queue_exclusive(&rqw->wait, &wait);
+	prepare_to_wait_exclusive(&rqw->wait, &data.wq, TASK_UNINTERRUPTIBLE);
 	do {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-
-		if (!has_sleeper && rq_wait_inc_below(rqw, get_limit(rwb, rw)))
+		if (data.got_token)
 			break;
 
+		if (!has_sleeper &&
+		    rq_wait_inc_below(rqw, get_limit(rwb, rw))) {
+			finish_wait(&rqw->wait, &data.wq);
+
+			/*
+			 * We raced with wbt_wake_function() getting a token,
+			 * which means we now have two. Put our local token
+			 * and wake anyone else potentially waiting for one.
+			 */
+			if (data.got_token)
+				wbt_rqw_done(rwb, rqw, wb_acct);
+			break;
+		}
+
 		if (lock) {
 			spin_unlock_irq(lock);
 			io_schedule();
 			spin_lock_irq(lock);
 		} else
 			io_schedule();
+
 		has_sleeper = false;
 	} while (1);
 
-	__set_current_state(TASK_RUNNING);
-	remove_wait_queue(&rqw->wait, &wait);
+	finish_wait(&rqw->wait, &data.wq);
 }
 
 static inline bool wbt_should_throttle(struct rq_wb *rwb, struct bio *bio)
@@ -580,11 +636,6 @@ static void wbt_wait(struct rq_qos *rqos, struct bio *bio, spinlock_t *lock)
 		return;
 	}
 
-	if (current_is_kswapd())
-		flags |= WBT_KSWAPD;
-	if (bio_op(bio) == REQ_OP_DISCARD)
-		flags |= WBT_DISCARD;
-
 	__wbt_wait(rwb, flags, bio->bi_opf, lock);
 
 	if (!blk_stat_is_active(rwb->cb))

block/bsg.c

@@ -37,7 +37,7 @@ struct bsg_device {
 	struct request_queue *queue;
 	spinlock_t lock;
 	struct hlist_node dev_list;
-	atomic_t ref_count;
+	refcount_t ref_count;
 	char name[20];
 	int max_queue;
 };
@@ -252,7 +252,7 @@ static int bsg_put_device(struct bsg_device *bd)
 
 	mutex_lock(&bsg_mutex);
 
-	if (!atomic_dec_and_test(&bd->ref_count)) {
+	if (!refcount_dec_and_test(&bd->ref_count)) {
 		mutex_unlock(&bsg_mutex);
 		return 0;
 	}
@@ -290,7 +290,7 @@ static struct bsg_device *bsg_add_device(struct inode *inode,
 
 	bd->queue = rq;
 
-	atomic_set(&bd->ref_count, 1);
+	refcount_set(&bd->ref_count, 1);
 	hlist_add_head(&bd->dev_list, bsg_dev_idx_hash(iminor(inode)));
 
 	strncpy(bd->name, dev_name(rq->bsg_dev.class_dev), sizeof(bd->name) - 1);
@@ -308,7 +308,7 @@ static struct bsg_device *__bsg_get_device(int minor, struct request_queue *q)
 
 	hlist_for_each_entry(bd, bsg_dev_idx_hash(minor), dev_list) {
 		if (bd->queue == q) {
-			atomic_inc(&bd->ref_count);
+			refcount_inc(&bd->ref_count);
 			goto found;
 		}
 	}

block/elevator.c

@@ -895,8 +895,7 @@ int elv_register(struct elevator_type *e)
 	spin_lock(&elv_list_lock);
 	if (elevator_find(e->elevator_name, e->uses_mq)) {
 		spin_unlock(&elv_list_lock);
-		if (e->icq_cache)
-			kmem_cache_destroy(e->icq_cache);
+		kmem_cache_destroy(e->icq_cache);
 		return -EBUSY;
 	}
 	list_add_tail(&e->list, &elv_list);

drivers/ata/pata_ftide010.c

@@ -256,14 +256,12 @@ static struct ata_port_operations pata_ftide010_port_ops = {
 	.qc_issue	= ftide010_qc_issue,
 };
 
-static struct ata_port_info ftide010_port_info[] = {
-	{
-		.flags		= ATA_FLAG_SLAVE_POSS,
-		.mwdma_mask	= ATA_MWDMA2,
-		.udma_mask	= ATA_UDMA6,
-		.pio_mask	= ATA_PIO4,
-		.port_ops	= &pata_ftide010_port_ops,
-	},
+static struct ata_port_info ftide010_port_info = {
+	.flags		= ATA_FLAG_SLAVE_POSS,
+	.mwdma_mask	= ATA_MWDMA2,
+	.udma_mask	= ATA_UDMA6,
+	.pio_mask	= ATA_PIO4,
+	.port_ops	= &pata_ftide010_port_ops,
 };
 
 #if IS_ENABLED(CONFIG_SATA_GEMINI)
@@ -349,6 +347,7 @@ static int pata_ftide010_gemini_cable_detect(struct ata_port *ap)
 }
 
 static int pata_ftide010_gemini_init(struct ftide010 *ftide,
+				     struct ata_port_info *pi,
 				     bool is_ata1)
 {
 	struct device *dev = ftide->dev;
@@ -373,7 +372,13 @@ static int pata_ftide010_gemini_init(struct ftide010 *ftide,
 
 	/* Flag port as SATA-capable */
 	if (gemini_sata_bridge_enabled(sg, is_ata1))
-		ftide010_port_info[0].flags |= ATA_FLAG_SATA;
+		pi->flags |= ATA_FLAG_SATA;
+
+	/* This device has broken DMA, only PIO works */
+	if (of_machine_is_compatible("itian,sq201")) {
+		pi->mwdma_mask = 0;
+		pi->udma_mask = 0;
+	}
 
 	/*
 	 * We assume that a simple 40-wire cable is used in the PATA mode.
@@ -435,6 +440,7 @@ static int pata_ftide010_gemini_init(struct ftide010 *ftide,
 }
 #else
 static int pata_ftide010_gemini_init(struct ftide010 *ftide,
+				     struct ata_port_info *pi,
 				     bool is_ata1)
 {
 	return -ENOTSUPP;
@@ -446,7 +452,7 @@ static int pata_ftide010_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	const struct ata_port_info pi = ftide010_port_info[0];
+	struct ata_port_info pi = ftide010_port_info;
 	const struct ata_port_info *ppi[] = { &pi, NULL };
 	struct ftide010 *ftide;
 	struct resource *res;
@@ -490,6 +496,7 @@ static int pata_ftide010_probe(struct platform_device *pdev)
 		 * are ATA0. This will also set up the cable types.
 		 */
 		ret = pata_ftide010_gemini_init(ftide,
+				&pi,
 				(res->start == 0x63400000));
 		if (ret)
 			goto err_dis_clk;

drivers/base/power/clock_ops.c

@@ -185,7 +185,7 @@ EXPORT_SYMBOL_GPL(of_pm_clk_add_clk);
 int of_pm_clk_add_clks(struct device *dev)
 {
 	struct clk **clks;
-	unsigned int i, count;
+	int i, count;
 	int ret;
 
 	if (!dev || !dev->of_node)

drivers/block/xen-blkback/blkback.c

@@ -83,6 +83,18 @@ module_param_named(max_persistent_grants, xen_blkif_max_pgrants, int, 0644);
 MODULE_PARM_DESC(max_persistent_grants,
                  "Maximum number of grants to map persistently");
 
+/*
+ * How long a persistent grant is allowed to remain allocated without being in
+ * use. The time is in seconds, 0 means indefinitely long.
+ */
+
+static unsigned int xen_blkif_pgrant_timeout = 60;
+module_param_named(persistent_grant_unused_seconds, xen_blkif_pgrant_timeout,
+		   uint, 0644);
+MODULE_PARM_DESC(persistent_grant_unused_seconds,
+		 "Time in seconds an unused persistent grant is allowed to "
+		 "remain allocated. Default is 60, 0 means unlimited.");
+
 /*
  * Maximum number of rings/queues blkback supports, allow as many queues as there
  * are CPUs if user has not specified a value.
@@ -123,6 +135,13 @@ module_param(log_stats, int, 0644);
 /* Number of free pages to remove on each call to gnttab_free_pages */
 #define NUM_BATCH_FREE_PAGES 10
 
+static inline bool persistent_gnt_timeout(struct persistent_gnt *persistent_gnt)
+{
+	return xen_blkif_pgrant_timeout &&
+	       (jiffies - persistent_gnt->last_used >=
+		HZ * xen_blkif_pgrant_timeout);
+}
+
 static inline int get_free_page(struct xen_blkif_ring *ring, struct page **page)
 {
 	unsigned long flags;
@@ -236,8 +255,7 @@ static int add_persistent_gnt(struct xen_blkif_ring *ring,
 		}
 	}
 
-	bitmap_zero(persistent_gnt->flags, PERSISTENT_GNT_FLAGS_SIZE);
-	set_bit(PERSISTENT_GNT_ACTIVE, persistent_gnt->flags);
+	persistent_gnt->active = true;
 	/* Add new node and rebalance tree. */
 	rb_link_node(&(persistent_gnt->node), parent, new);
 	rb_insert_color(&(persistent_gnt->node), &ring->persistent_gnts);
@@ -261,11 +279,11 @@ static struct persistent_gnt *get_persistent_gnt(struct xen_blkif_ring *ring,
 		else if (gref > data->gnt)
 			node = node->rb_right;
 		else {
-			if(test_bit(PERSISTENT_GNT_ACTIVE, data->flags)) {
+			if (data->active) {
 				pr_alert_ratelimited("requesting a grant already in use\n");
 				return NULL;
 			}
-			set_bit(PERSISTENT_GNT_ACTIVE, data->flags);
+			data->active = true;
 			atomic_inc(&ring->persistent_gnt_in_use);
 			return data;
 		}
@@ -276,10 +294,10 @@ static struct persistent_gnt *get_persistent_gnt(struct xen_blkif_ring *ring,
 static void put_persistent_gnt(struct xen_blkif_ring *ring,
                                struct persistent_gnt *persistent_gnt)
 {
-	if(!test_bit(PERSISTENT_GNT_ACTIVE, persistent_gnt->flags))
+	if (!persistent_gnt->active)
 		pr_alert_ratelimited("freeing a grant already unused\n");
-	set_bit(PERSISTENT_GNT_WAS_ACTIVE, persistent_gnt->flags);
-	clear_bit(PERSISTENT_GNT_ACTIVE, persistent_gnt->flags);
+	persistent_gnt->last_used = jiffies;
+	persistent_gnt->active = false;
 	atomic_dec(&ring->persistent_gnt_in_use);
 }
 
@@ -371,26 +389,26 @@ static void purge_persistent_gnt(struct xen_blkif_ring *ring)
 	struct persistent_gnt *persistent_gnt;
 	struct rb_node *n;
 	unsigned int num_clean, total;
-	bool scan_used = false, clean_used = false;
+	bool scan_used = false;
 	struct rb_root *root;
 
-	if (ring->persistent_gnt_c < xen_blkif_max_pgrants ||
-	    (ring->persistent_gnt_c == xen_blkif_max_pgrants &&
-	    !ring->blkif->vbd.overflow_max_grants)) {
-		goto out;
-	}
-
 	if (work_busy(&ring->persistent_purge_work)) {
 		pr_alert_ratelimited("Scheduled work from previous purge is still busy, cannot purge list\n");
 		goto out;
 	}
 
-	num_clean = (xen_blkif_max_pgrants / 100) * LRU_PERCENT_CLEAN;
-	num_clean = ring->persistent_gnt_c - xen_blkif_max_pgrants + num_clean;
-	num_clean = min(ring->persistent_gnt_c, num_clean);
-	if ((num_clean == 0) ||
-	    (num_clean > (ring->persistent_gnt_c - atomic_read(&ring->persistent_gnt_in_use))))
-		goto out;
+	if (ring->persistent_gnt_c < xen_blkif_max_pgrants ||
+	    (ring->persistent_gnt_c == xen_blkif_max_pgrants &&
+	    !ring->blkif->vbd.overflow_max_grants)) {
+		num_clean = 0;
+	} else {
+		num_clean = (xen_blkif_max_pgrants / 100) * LRU_PERCENT_CLEAN;
+		num_clean = ring->persistent_gnt_c - xen_blkif_max_pgrants +
+			    num_clean;
+		num_clean = min(ring->persistent_gnt_c, num_clean);
+		pr_debug("Going to purge at least %u persistent grants\n",
+			 num_clean);
+	}
 
 	/*
 	 * At this point, we can assure that there will be no calls
@@ -401,9 +419,7 @@ static void purge_persistent_gnt(struct xen_blkif_ring *ring)
          * number of grants.
 	 */
 
-	total = num_clean;
-
-	pr_debug("Going to purge %u persistent grants\n", num_clean);
+	total = 0;
 
 	BUG_ON(!list_empty(&ring->persistent_purge_list));
 	root = &ring->persistent_gnts;
@@ -412,47 +428,38 @@ purge_list:
 		BUG_ON(persistent_gnt->handle ==
 			BLKBACK_INVALID_HANDLE);
 
-		if (clean_used) {
-			clear_bit(PERSISTENT_GNT_WAS_ACTIVE, persistent_gnt->flags);
+		if (persistent_gnt->active)
 			continue;
-		}
-
-		if (test_bit(PERSISTENT_GNT_ACTIVE, persistent_gnt->flags))
+		if (!scan_used && !persistent_gnt_timeout(persistent_gnt))
 			continue;
-		if (!scan_used &&
-		    (test_bit(PERSISTENT_GNT_WAS_ACTIVE, persistent_gnt->flags)))
+		if (scan_used && total >= num_clean)
 			continue;
 
 		rb_erase(&persistent_gnt->node, root);
 		list_add(&persistent_gnt->remove_node,
 			 &ring->persistent_purge_list);
-		if (--num_clean == 0)
-			goto finished;
+		total++;
 	}
 	/*
-	 * If we get here it means we also need to start cleaning
+	 * Check whether we also need to start cleaning
 	 * grants that were used since last purge in order to cope
 	 * with the requested num
 	 */
-	if (!scan_used && !clean_used) {
-		pr_debug("Still missing %u purged frames\n", num_clean);
+	if (!scan_used && total < num_clean) {
+		pr_debug("Still missing %u purged frames\n", num_clean - total);
 		scan_used = true;
 		goto purge_list;
 	}
-finished:
-	if (!clean_used) {
-		pr_debug("Finished scanning for grants to clean, removing used flag\n");
-		clean_used = true;
-		goto purge_list;
+
+	if (total) {
+		ring->persistent_gnt_c -= total;
+		ring->blkif->vbd.overflow_max_grants = 0;
+
+		/* We can defer this work */
+		schedule_work(&ring->persistent_purge_work);
+		pr_debug("Purged %u/%u\n", num_clean, total);
 	}
 
-	ring->persistent_gnt_c -= (total - num_clean);
-	ring->blkif->vbd.overflow_max_grants = 0;
-
-	/* We can defer this work */
-	schedule_work(&ring->persistent_purge_work);
-	pr_debug("Purged %u/%u\n", (total - num_clean), total);
-
 out:
 	return;
 }

drivers/block/xen-blkback/common.h

@@ -233,16 +233,6 @@ struct xen_vbd {
 
 struct backend_info;
 
-/* Number of available flags */
-#define PERSISTENT_GNT_FLAGS_SIZE	2
-/* This persistent grant is currently in use */
-#define PERSISTENT_GNT_ACTIVE		0
-/*
- * This persistent grant has been used, this flag is set when we remove the
- * PERSISTENT_GNT_ACTIVE, to know that this grant has been used recently.
- */
-#define PERSISTENT_GNT_WAS_ACTIVE	1
-
 /* Number of requests that we can fit in a ring */
 #define XEN_BLKIF_REQS_PER_PAGE		32
 
@@ -250,7 +240,8 @@ struct persistent_gnt {
 	struct page *page;
 	grant_ref_t gnt;
 	grant_handle_t handle;
-	DECLARE_BITMAP(flags, PERSISTENT_GNT_FLAGS_SIZE);
+	unsigned long last_used;
+	bool active;
 	struct rb_node node;
 	struct list_head remove_node;
 };
@@ -278,7 +269,6 @@ struct xen_blkif_ring {
 	wait_queue_head_t	pending_free_wq;
 
 	/* Tree to store persistent grants. */
-	spinlock_t		pers_gnts_lock;
 	struct rb_root		persistent_gnts;
 	unsigned int		persistent_gnt_c;
 	atomic_t		persistent_gnt_in_use;

drivers/block/xen-blkfront.c

@@ -46,6 +46,7 @@
 #include <linux/scatterlist.h>
 #include <linux/bitmap.h>
 #include <linux/list.h>
+#include <linux/workqueue.h>
 
 #include <xen/xen.h>
 #include <xen/xenbus.h>
@@ -121,6 +122,8 @@ static inline struct blkif_req *blkif_req(struct request *rq)
 
 static DEFINE_MUTEX(blkfront_mutex);
 static const struct block_device_operations xlvbd_block_fops;
+static struct delayed_work blkfront_work;
+static LIST_HEAD(info_list);
 
 /*
  * Maximum number of segments in indirect requests, the actual value used by
@@ -216,6 +219,7 @@ struct blkfront_info
 	/* Save uncomplete reqs and bios for migration. */
 	struct list_head requests;
 	struct bio_list bio_list;
+	struct list_head info_list;
 };
 
 static unsigned int nr_minors;
@@ -1759,6 +1763,12 @@ abort_transaction:
 	return err;
 }
 
+static void free_info(struct blkfront_info *info)
+{
+	list_del(&info->info_list);
+	kfree(info);
+}
+
 /* Common code used when first setting up, and when resuming. */
 static int talk_to_blkback(struct xenbus_device *dev,
 			   struct blkfront_info *info)
@@ -1880,7 +1890,10 @@ again:
  destroy_blkring:
 	blkif_free(info, 0);
 
-	kfree(info);
+	mutex_lock(&blkfront_mutex);
+	free_info(info);
+	mutex_unlock(&blkfront_mutex);
+
 	dev_set_drvdata(&dev->dev, NULL);
 
 	return err;
@@ -1991,6 +2004,10 @@ static int blkfront_probe(struct xenbus_device *dev,
 	info->handle = simple_strtoul(strrchr(dev->nodename, '/')+1, NULL, 0);
 	dev_set_drvdata(&dev->dev, info);
 
+	mutex_lock(&blkfront_mutex);
+	list_add(&info->info_list, &info_list);
+	mutex_unlock(&blkfront_mutex);
+
 	return 0;
 }
 
@@ -2301,6 +2318,12 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
 	if (indirect_segments <= BLKIF_MAX_SEGMENTS_PER_REQUEST)
 		indirect_segments = 0;
 	info->max_indirect_segments = indirect_segments;
+
+	if (info->feature_persistent) {
+		mutex_lock(&blkfront_mutex);
+		schedule_delayed_work(&blkfront_work, HZ * 10);
+		mutex_unlock(&blkfront_mutex);
+	}
 }
 
 /*
@@ -2482,7 +2505,9 @@ static int blkfront_remove(struct xenbus_device *xbdev)
 	mutex_unlock(&info->mutex);
 
 	if (!bdev) {
-		kfree(info);
+		mutex_lock(&blkfront_mutex);
+		free_info(info);
+		mutex_unlock(&blkfront_mutex);
 		return 0;
 	}
 
@@ -2502,7 +2527,9 @@ static int blkfront_remove(struct xenbus_device *xbdev)
 	if (info && !bdev->bd_openers) {
 		xlvbd_release_gendisk(info);
 		disk->private_data = NULL;
-		kfree(info);
+		mutex_lock(&blkfront_mutex);
+		free_info(info);
+		mutex_unlock(&blkfront_mutex);
 	}
 
 	mutex_unlock(&bdev->bd_mutex);
@@ -2585,7 +2612,7 @@ static void blkif_release(struct gendisk *disk, fmode_t mode)
 		dev_info(disk_to_dev(bdev->bd_disk), "releasing disk\n");
 		xlvbd_release_gendisk(info);
 		disk->private_data = NULL;
-		kfree(info);
+		free_info(info);
 	}
 
 out:
@@ -2618,6 +2645,61 @@ static struct xenbus_driver blkfront_driver = {
 	.is_ready = blkfront_is_ready,
 };
 
+static void purge_persistent_grants(struct blkfront_info *info)
+{
+	unsigned int i;
+	unsigned long flags;
+
+	for (i = 0; i < info->nr_rings; i++) {
+		struct blkfront_ring_info *rinfo = &info->rinfo[i];
+		struct grant *gnt_list_entry, *tmp;
+
+		spin_lock_irqsave(&rinfo->ring_lock, flags);
+
+		if (rinfo->persistent_gnts_c == 0) {
+			spin_unlock_irqrestore(&rinfo->ring_lock, flags);
+			continue;
+		}
+
+		list_for_each_entry_safe(gnt_list_entry, tmp, &rinfo->grants,
+					 node) {
+			if (gnt_list_entry->gref == GRANT_INVALID_REF ||
+			    gnttab_query_foreign_access(gnt_list_entry->gref))
+				continue;
+
+			list_del(&gnt_list_entry->node);
+			gnttab_end_foreign_access(gnt_list_entry->gref, 0, 0UL);
+			rinfo->persistent_gnts_c--;
+			__free_page(gnt_list_entry->page);
+			kfree(gnt_list_entry);
+		}
+
+		spin_unlock_irqrestore(&rinfo->ring_lock, flags);
+	}
+}
+
+static void blkfront_delay_work(struct work_struct *work)
+{
+	struct blkfront_info *info;
+	bool need_schedule_work = false;
+
+	mutex_lock(&blkfront_mutex);
+
+	list_for_each_entry(info, &info_list, info_list) {
+		if (info->feature_persistent) {
+			need_schedule_work = true;
+			mutex_lock(&info->mutex);
+			purge_persistent_grants(info);
+			mutex_unlock(&info->mutex);
+		}
+	}
+
+	if (need_schedule_work)
+		schedule_delayed_work(&blkfront_work, HZ * 10);
+
+	mutex_unlock(&blkfront_mutex);
+}
+
 static int __init xlblk_init(void)
 {
 	int ret;
@@ -2626,6 +2708,15 @@ static int __init xlblk_init(void)
 	if (!xen_domain())
 		return -ENODEV;
 
+	if (!xen_has_pv_disk_devices())
+		return -ENODEV;
+
+	if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) {
+		pr_warn("xen_blk: can't get major %d with name %s\n",
+			XENVBD_MAJOR, DEV_NAME);
+		return -ENODEV;
+	}
+
 	if (xen_blkif_max_segments < BLKIF_MAX_SEGMENTS_PER_REQUEST)
 		xen_blkif_max_segments = BLKIF_MAX_SEGMENTS_PER_REQUEST;
 
@@ -2641,14 +2732,7 @@ static int __init xlblk_init(void)
 		xen_blkif_max_queues = nr_cpus;
 	}
 
-	if (!xen_has_pv_disk_devices())
-		return -ENODEV;
-
-	if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) {
-		printk(KERN_WARNING "xen_blk: can't get major %d with name %s\n",
-		       XENVBD_MAJOR, DEV_NAME);
-		return -ENODEV;
-	}
+	INIT_DELAYED_WORK(&blkfront_work, blkfront_delay_work);
 
 	ret = xenbus_register_frontend(&blkfront_driver);
 	if (ret) {
@@ -2663,6 +2747,8 @@ module_init(xlblk_init);
 
 static void __exit xlblk_exit(void)
 {
+	cancel_delayed_work_sync(&blkfront_work);
+
 	xenbus_unregister_driver(&blkfront_driver);
 	unregister_blkdev(XENVBD_MAJOR, DEV_NAME);
 	kfree(minors);

drivers/bus/ti-sysc.c

@@ -498,32 +498,29 @@ static int sysc_check_registers(struct sysc *ddata)
 
 /**
  * syc_ioremap - ioremap register space for the interconnect target module
- * @ddata: deviec driver data
+ * @ddata: device driver data
  *
  * Note that the interconnect target module registers can be anywhere
- * within the first child device address space. For example, SGX has
- * them at offset 0x1fc00 in the 32MB module address space. We just
- * what we need around the interconnect target module registers.
+ * within the interconnect target module range. For example, SGX has
+ * them at offset 0x1fc00 in the 32MB module address space. And cpsw
+ * has them at offset 0x1200 in the CPSW_WR child. Usually the
+ * the interconnect target module registers are at the beginning of
+ * the module range though.
  */
 static int sysc_ioremap(struct sysc *ddata)
 {
-	u32 size = 0;
+	int size;
 
-	if (ddata->offsets[SYSC_SYSSTATUS] >= 0)
-		size = ddata->offsets[SYSC_SYSSTATUS];
-	else if (ddata->offsets[SYSC_SYSCONFIG] >= 0)
-		size = ddata->offsets[SYSC_SYSCONFIG];
-	else if (ddata->offsets[SYSC_REVISION] >= 0)
-		size = ddata->offsets[SYSC_REVISION];
-	else
+	size = max3(ddata->offsets[SYSC_REVISION],
+		    ddata->offsets[SYSC_SYSCONFIG],
+		    ddata->offsets[SYSC_SYSSTATUS]);
+
+	if (size < 0 || (size + sizeof(u32)) > ddata->module_size)
 		return -EINVAL;
 
-	size &= 0xfff00;
-	size += SZ_256;
-
 	ddata->module_va = devm_ioremap(ddata->dev,
 					ddata->module_pa,
-					size);
+					size + sizeof(u32));
 	if (!ddata->module_va)
 		return -EIO;
 
@@ -1224,10 +1221,10 @@ static int sysc_child_suspend_noirq(struct device *dev)
 	if (!pm_runtime_status_suspended(dev)) {
 		error = pm_generic_runtime_suspend(dev);
 		if (error) {
-			dev_err(dev, "%s error at %i: %i\n",
-				__func__, __LINE__, error);
+			dev_warn(dev, "%s busy at %i: %i\n",
+				 __func__, __LINE__, error);
 
-			return error;
+			return 0;
 		}
 
 		error = sysc_runtime_suspend(ddata->dev);

drivers/cdrom/cdrom.c

@@ -2546,7 +2546,7 @@ static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
 	if (!CDROM_CAN(CDC_SELECT_DISC) ||
 	    (arg == CDSL_CURRENT || arg == CDSL_NONE))
 		return cdi->ops->drive_status(cdi, CDSL_CURRENT);
-	if (((int)arg >= cdi->capacity))
+	if (arg >= cdi->capacity)
 		return -EINVAL;
 	return cdrom_slot_status(cdi, arg);
 }

drivers/clk/clk-npcm7xx.c

@@ -558,8 +558,8 @@ static void __init npcm7xx_clk_init(struct device_node *clk_np)
 	if (!clk_base)
 		goto npcm7xx_init_error;
 
-	npcm7xx_clk_data = kzalloc(sizeof(*npcm7xx_clk_data->hws) *
-		NPCM7XX_NUM_CLOCKS + sizeof(npcm7xx_clk_data), GFP_KERNEL);
+	npcm7xx_clk_data = kzalloc(struct_size(npcm7xx_clk_data, hws,
+				   NPCM7XX_NUM_CLOCKS), GFP_KERNEL);
 	if (!npcm7xx_clk_data)
 		goto npcm7xx_init_np_err;
 

drivers/clk/x86/clk-st.c

@@ -46,7 +46,7 @@ static int st_clk_probe(struct platform_device *pdev)
 		clk_oscout1_parents, ARRAY_SIZE(clk_oscout1_parents),
 		0, st_data->base + CLKDRVSTR2, OSCOUT1CLK25MHZ, 3, 0, NULL);
 
-	clk_set_parent(hws[ST_CLK_MUX]->clk, hws[ST_CLK_25M]->clk);
+	clk_set_parent(hws[ST_CLK_MUX]->clk, hws[ST_CLK_48M]->clk);
 
 	hws[ST_CLK_GATE] = clk_hw_register_gate(NULL, "oscout1", "oscout1_mux",
 		0, st_data->base + MISCCLKCNTL1, OSCCLKENB,

drivers/cpuidle/governors/menu.c

@@ -379,9 +379,20 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
 		if (idx == -1)
 			idx = i; /* first enabled state */
 		if (s->target_residency > data->predicted_us) {
-			if (!tick_nohz_tick_stopped())
+			if (data->predicted_us < TICK_USEC)
 				break;
 
+			if (!tick_nohz_tick_stopped()) {
+				/*
+				 * If the state selected so far is shallow,
+				 * waking up early won't hurt, so retain the
+				 * tick in that case and let the governor run
+				 * again in the next iteration of the loop.
+				 */
+				expected_interval = drv->states[idx].target_residency;
+				break;
+			}
+
 			/*
 			 * If the state selected so far is shallow and this
 			 * state's target residency matches the time till the

drivers/crypto/caam/caamalg_qi.c

@@ -679,10 +679,8 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
 	int ret = 0;
 
 	if (keylen != 2 * AES_MIN_KEY_SIZE  && keylen != 2 * AES_MAX_KEY_SIZE) {
-		crypto_ablkcipher_set_flags(ablkcipher,
-					    CRYPTO_TFM_RES_BAD_KEY_LEN);
 		dev_err(jrdev, "key size mismatch\n");
-		return -EINVAL;
+		goto badkey;
 	}
 
 	ctx->cdata.keylen = keylen;
@@ -715,7 +713,7 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
 	return ret;
 badkey:
 	crypto_ablkcipher_set_flags(ablkcipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
-	return 0;
+	return -EINVAL;
 }
 
 /*

drivers/crypto/caam/caampkc.c

@@ -71,8 +71,8 @@ static void rsa_priv_f2_unmap(struct device *dev, struct rsa_edesc *edesc,
 	dma_unmap_single(dev, pdb->d_dma, key->d_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->p_dma, p_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->q_dma, q_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
+	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_BIDIRECTIONAL);
 }
 
 static void rsa_priv_f3_unmap(struct device *dev, struct rsa_edesc *edesc,
@@ -90,8 +90,8 @@ static void rsa_priv_f3_unmap(struct device *dev, struct rsa_edesc *edesc,
 	dma_unmap_single(dev, pdb->dp_dma, p_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->dq_dma, q_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->c_dma, p_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
+	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_BIDIRECTIONAL);
 }
 
 /* RSA Job Completion handler */
@@ -417,13 +417,13 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
 		goto unmap_p;
 	}
 
-	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_TO_DEVICE);
+	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp1_dma)) {
 		dev_err(dev, "Unable to map RSA tmp1 memory\n");
 		goto unmap_q;
 	}
 
-	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_TO_DEVICE);
+	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp2_dma)) {
 		dev_err(dev, "Unable to map RSA tmp2 memory\n");
 		goto unmap_tmp1;
@@ -451,7 +451,7 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
 	return 0;
 
 unmap_tmp1:
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
 unmap_q:
 	dma_unmap_single(dev, pdb->q_dma, q_sz, DMA_TO_DEVICE);
 unmap_p:
@@ -504,13 +504,13 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
 		goto unmap_dq;
 	}
 
-	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_TO_DEVICE);
+	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp1_dma)) {
 		dev_err(dev, "Unable to map RSA tmp1 memory\n");
 		goto unmap_qinv;
 	}
 
-	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_TO_DEVICE);
+	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp2_dma)) {
 		dev_err(dev, "Unable to map RSA tmp2 memory\n");
 		goto unmap_tmp1;
@@ -538,7 +538,7 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
 	return 0;
 
 unmap_tmp1:
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
 unmap_qinv:
 	dma_unmap_single(dev, pdb->c_dma, p_sz, DMA_TO_DEVICE);
 unmap_dq:

drivers/crypto/caam/jr.c

@@ -190,7 +190,8 @@ static void caam_jr_dequeue(unsigned long devarg)
 		BUG_ON(CIRC_CNT(head, tail + i, JOBR_DEPTH) <= 0);
 
 		/* Unmap just-run descriptor so we can post-process */
-		dma_unmap_single(dev, jrp->outring[hw_idx].desc,
+		dma_unmap_single(dev,
+				 caam_dma_to_cpu(jrp->outring[hw_idx].desc),
 				 jrp->entinfo[sw_idx].desc_size,
 				 DMA_TO_DEVICE);
 

drivers/crypto/cavium/nitrox/nitrox_dev.h

@@ -35,6 +35,7 @@ struct nitrox_cmdq {
 	/* requests in backlog queues */
 	atomic_t backlog_count;
 
+	int write_idx;
 	/* command size 32B/64B */
 	u8 instr_size;
 	u8 qno;
@@ -87,7 +88,7 @@ struct nitrox_bh {
 	struct bh_data *slc;
 };
 
-/* NITROX-5 driver state */
+/* NITROX-V driver state */
 #define NITROX_UCODE_LOADED	0
 #define NITROX_READY		1
 

drivers/crypto/cavium/nitrox/nitrox_lib.c

@@ -36,6 +36,7 @@ static int cmdq_common_init(struct nitrox_cmdq *cmdq)
 	cmdq->head = PTR_ALIGN(cmdq->head_unaligned, PKT_IN_ALIGN);
 	cmdq->dma = PTR_ALIGN(cmdq->dma_unaligned, PKT_IN_ALIGN);
 	cmdq->qsize = (qsize + PKT_IN_ALIGN);
+	cmdq->write_idx = 0;
 
 	spin_lock_init(&cmdq->response_lock);
 	spin_lock_init(&cmdq->cmdq_lock);

drivers/crypto/cavium/nitrox/nitrox_reqmgr.c

@@ -42,6 +42,16 @@
  *   Invalid flag options in AES-CCM IV.
  */
 
+static inline int incr_index(int index, int count, int max)
+{
+	if ((index + count) >= max)
+		index = index + count - max;
+	else
+		index += count;
+
+	return index;
+}
+
 /**
  * dma_free_sglist - unmap and free the sg lists.
  * @ndev: N5 device
@@ -426,30 +436,29 @@ static void post_se_instr(struct nitrox_softreq *sr,
 			  struct nitrox_cmdq *cmdq)
 {
 	struct nitrox_device *ndev = sr->ndev;
-	union nps_pkt_in_instr_baoff_dbell pkt_in_baoff_dbell;
-	u64 offset;
+	int idx;
 	u8 *ent;
 
 	spin_lock_bh(&cmdq->cmdq_lock);
 
-	/* get the next write offset */
-	offset = NPS_PKT_IN_INSTR_BAOFF_DBELLX(cmdq->qno);
-	pkt_in_baoff_dbell.value = nitrox_read_csr(ndev, offset);
+	idx = cmdq->write_idx;
 	/* copy the instruction */
-	ent = cmdq->head + pkt_in_baoff_dbell.s.aoff;
+	ent = cmdq->head + (idx * cmdq->instr_size);
 	memcpy(ent, &sr->instr, cmdq->instr_size);
-	/* flush the command queue updates */
-	dma_wmb();
 
-	sr->tstamp = jiffies;
 	atomic_set(&sr->status, REQ_POSTED);
 	response_list_add(sr, cmdq);
+	sr->tstamp = jiffies;
+	/* flush the command queue updates */
+	dma_wmb();
 
 	/* Ring doorbell with count 1 */
 	writeq(1, cmdq->dbell_csr_addr);
 	/* orders the doorbell rings */
 	mmiowb();
 
+	cmdq->write_idx = incr_index(idx, 1, ndev->qlen);
+
 	spin_unlock_bh(&cmdq->cmdq_lock);
 }
 
@@ -459,6 +468,9 @@ static int post_backlog_cmds(struct nitrox_cmdq *cmdq)
 	struct nitrox_softreq *sr, *tmp;
 	int ret = 0;
 
+	if (!atomic_read(&cmdq->backlog_count))
+		return 0;
+
 	spin_lock_bh(&cmdq->backlog_lock);
 
 	list_for_each_entry_safe(sr, tmp, &cmdq->backlog_head, backlog) {
@@ -466,7 +478,7 @@ static int post_backlog_cmds(struct nitrox_cmdq *cmdq)
 
 		/* submit until space available */
 		if (unlikely(cmdq_full(cmdq, ndev->qlen))) {
-			ret = -EBUSY;
+			ret = -ENOSPC;
 			break;
 		}
 		/* delete from backlog list */
@@ -491,23 +503,20 @@ static int nitrox_enqueue_request(struct nitrox_softreq *sr)
 {
 	struct nitrox_cmdq *cmdq = sr->cmdq;
 	struct nitrox_device *ndev = sr->ndev;
-	int ret = -EBUSY;
+
+	/* try to post backlog requests */
+	post_backlog_cmds(cmdq);
 
 	if (unlikely(cmdq_full(cmdq, ndev->qlen))) {
 		if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
-			return -EAGAIN;
-
+			return -ENOSPC;
+		/* add to backlog list */
 		backlog_list_add(sr, cmdq);
-	} else {
-		ret = post_backlog_cmds(cmdq);
-		if (ret) {
-			backlog_list_add(sr, cmdq);
-			return ret;
-		}
-		post_se_instr(sr, cmdq);
-		ret = -EINPROGRESS;
+		return -EBUSY;
 	}
-	return ret;
+	post_se_instr(sr, cmdq);
+
+	return -EINPROGRESS;
 }
 
 /**
@@ -624,11 +633,9 @@ int nitrox_process_se_request(struct nitrox_device *ndev,
 	 */
 	sr->instr.fdata[0] = *((u64 *)&req->gph);
 	sr->instr.fdata[1] = 0;
-	/* flush the soft_req changes before posting the cmd */
-	wmb();
 
 	ret = nitrox_enqueue_request(sr);
-	if (ret == -EAGAIN)
+	if (ret == -ENOSPC)
 		goto send_fail;
 
 	return ret;

drivers/crypto/chelsio/chtls/chtls.h

@@ -96,6 +96,10 @@ enum csk_flags {
 	CSK_CONN_INLINE,	/* Connection on HW */
 };
 
+enum chtls_cdev_state {
+	CHTLS_CDEV_STATE_UP = 1
+};
+
 struct listen_ctx {
 	struct sock *lsk;
 	struct chtls_dev *cdev;
@@ -146,6 +150,7 @@ struct chtls_dev {
 	unsigned int send_page_order;
 	int max_host_sndbuf;
 	struct key_map kmap;
+	unsigned int cdev_state;
 };
 
 struct chtls_hws {

drivers/crypto/chelsio/chtls/chtls_main.c

@@ -160,6 +160,7 @@ static void chtls_register_dev(struct chtls_dev *cdev)
 	tlsdev->hash = chtls_create_hash;
 	tlsdev->unhash = chtls_destroy_hash;
 	tls_register_device(&cdev->tlsdev);
+	cdev->cdev_state = CHTLS_CDEV_STATE_UP;
 }
 
 static void chtls_unregister_dev(struct chtls_dev *cdev)
@@ -281,8 +282,10 @@ static void chtls_free_all_uld(void)
 	struct chtls_dev *cdev, *tmp;
 
 	mutex_lock(&cdev_mutex);
-	list_for_each_entry_safe(cdev, tmp, &cdev_list, list)
-		chtls_free_uld(cdev);
+	list_for_each_entry_safe(cdev, tmp, &cdev_list, list) {
+		if (cdev->cdev_state == CHTLS_CDEV_STATE_UP)
+			chtls_free_uld(cdev);
+	}
 	mutex_unlock(&cdev_mutex);
 }
 

drivers/crypto/vmx/aes_cbc.c

@@ -107,24 +107,23 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc,
 		ret = crypto_skcipher_encrypt(req);
 		skcipher_request_zero(req);
 	} else {
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_vsx();
-
 		blkcipher_walk_init(&walk, dst, src, nbytes);
 		ret = blkcipher_walk_virt(desc, &walk);
 		while ((nbytes = walk.nbytes)) {
+			preempt_disable();
+			pagefault_disable();
+			enable_kernel_vsx();
 			aes_p8_cbc_encrypt(walk.src.virt.addr,
 					   walk.dst.virt.addr,
 					   nbytes & AES_BLOCK_MASK,
 					   &ctx->enc_key, walk.iv, 1);
+			disable_kernel_vsx();
+			pagefault_enable();
+			preempt_enable();
+
 			nbytes &= AES_BLOCK_SIZE - 1;
 			ret = blkcipher_walk_done(desc, &walk, nbytes);
 		}
-
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
 	}
 
 	return ret;
@@ -147,24 +146,23 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc,
 		ret = crypto_skcipher_decrypt(req);
 		skcipher_request_zero(req);
 	} else {
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_vsx();
-
 		blkcipher_walk_init(&walk, dst, src, nbytes);
 		ret = blkcipher_walk_virt(desc, &walk);
 		while ((nbytes = walk.nbytes)) {
+			preempt_disable();
+			pagefault_disable();
+			enable_kernel_vsx();
 			aes_p8_cbc_encrypt(walk.src.virt.addr,
 					   walk.dst.virt.addr,
 					   nbytes & AES_BLOCK_MASK,
 					   &ctx->dec_key, walk.iv, 0);
+			disable_kernel_vsx();
+			pagefault_enable();
+			preempt_enable();
+
 			nbytes &= AES_BLOCK_SIZE - 1;
 			ret = blkcipher_walk_done(desc, &walk, nbytes);
 		}
-
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
 	}
 
 	return ret;

drivers/crypto/vmx/aes_xts.c

@@ -116,32 +116,39 @@ static int p8_aes_xts_crypt(struct blkcipher_desc *desc,
 		ret = enc? crypto_skcipher_encrypt(req) : crypto_skcipher_decrypt(req);
 		skcipher_request_zero(req);
 	} else {
+		blkcipher_walk_init(&walk, dst, src, nbytes);
+
+		ret = blkcipher_walk_virt(desc, &walk);
+
 		preempt_disable();
 		pagefault_disable();
 		enable_kernel_vsx();
 
-		blkcipher_walk_init(&walk, dst, src, nbytes);
-
-		ret = blkcipher_walk_virt(desc, &walk);
 		iv = walk.iv;
 		memset(tweak, 0, AES_BLOCK_SIZE);
 		aes_p8_encrypt(iv, tweak, &ctx->tweak_key);
 
+		disable_kernel_vsx();
+		pagefault_enable();
+		preempt_enable();
+
 		while ((nbytes = walk.nbytes)) {
+			preempt_disable();
+			pagefault_disable();
+			enable_kernel_vsx();
 			if (enc)
 				aes_p8_xts_encrypt(walk.src.virt.addr, walk.dst.virt.addr,
 						nbytes & AES_BLOCK_MASK, &ctx->enc_key, NULL, tweak);
 			else
 				aes_p8_xts_decrypt(walk.src.virt.addr, walk.dst.virt.addr,
 						nbytes & AES_BLOCK_MASK, &ctx->dec_key, NULL, tweak);
+			disable_kernel_vsx();
+			pagefault_enable();
+			preempt_enable();
 
 			nbytes &= AES_BLOCK_SIZE - 1;
 			ret = blkcipher_walk_done(desc, &walk, nbytes);
 		}
-
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
 	}
 	return ret;
 }

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

@@ -1012,13 +1012,9 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 		if (r)
 			return r;
 
-		if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE) {
-			parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT;
-			if (!parser->ctx->preamble_presented) {
-				parser->job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
-				parser->ctx->preamble_presented = true;
-			}
-		}
+		if (chunk_ib->flags & AMDGPU_IB_FLAG_PREAMBLE)
+			parser->job->preamble_status |=
+				AMDGPU_PREAMBLE_IB_PRESENT;
 
 		if (parser->ring && parser->ring != ring)
 			return -EINVAL;
@@ -1207,26 +1203,24 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 
 	int r;
 
+	job = p->job;
+	p->job = NULL;
+
+	r = drm_sched_job_init(&job->base, entity, p->filp);
+	if (r)
+		goto error_unlock;
+
+	/* No memory allocation is allowed while holding the mn lock */
 	amdgpu_mn_lock(p->mn);
 	amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
 		struct amdgpu_bo *bo = e->robj;
 
 		if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm)) {
-			amdgpu_mn_unlock(p->mn);
-			return -ERESTARTSYS;
+			r = -ERESTARTSYS;
+			goto error_abort;
 		}
 	}
 
-	job = p->job;
-	p->job = NULL;
-
-	r = drm_sched_job_init(&job->base, entity, p->filp);
-	if (r) {
-		amdgpu_job_free(job);
-		amdgpu_mn_unlock(p->mn);
-		return r;
-	}
-
 	job->owner = p->filp;
 	p->fence = dma_fence_get(&job->base.s_fence->finished);
 
@@ -1241,6 +1235,12 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 
 	amdgpu_cs_post_dependencies(p);
 
+	if ((job->preamble_status & AMDGPU_PREAMBLE_IB_PRESENT) &&
+	    !p->ctx->preamble_presented) {
+		job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
+		p->ctx->preamble_presented = true;
+	}
+
 	cs->out.handle = seq;
 	job->uf_sequence = seq;
 
@@ -1258,6 +1258,15 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 	amdgpu_mn_unlock(p->mn);
 
 	return 0;
+
+error_abort:
+	dma_fence_put(&job->base.s_fence->finished);
+	job->base.s_fence = NULL;
+
+error_unlock:
+	amdgpu_job_free(job);
+	amdgpu_mn_unlock(p->mn);
+	return r;
 }
 
 int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)

drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c

@@ -164,8 +164,10 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 		return r;
 	}
 
+	need_ctx_switch = ring->current_ctx != fence_ctx;
 	if (ring->funcs->emit_pipeline_sync && job &&
 	    ((tmp = amdgpu_sync_get_fence(&job->sched_sync, NULL)) ||
+	     (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
 	     amdgpu_vm_need_pipeline_sync(ring, job))) {
 		need_pipe_sync = true;
 		dma_fence_put(tmp);
@@ -196,7 +198,6 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 	}
 
 	skip_preamble = ring->current_ctx == fence_ctx;
-	need_ctx_switch = ring->current_ctx != fence_ctx;
 	if (job && ring->funcs->emit_cntxcntl) {
 		if (need_ctx_switch)
 			status |= AMDGPU_HAVE_CTX_SWITCH;

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

@@ -1932,14 +1932,6 @@ void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)
 			amdgpu_fence_wait_empty(ring);
 	}
 
-	mutex_lock(&adev->pm.mutex);
-	/* update battery/ac status */
-	if (power_supply_is_system_supplied() > 0)
-		adev->pm.ac_power = true;
-	else
-		adev->pm.ac_power = false;
-	mutex_unlock(&adev->pm.mutex);
-
 	if (adev->powerplay.pp_funcs->dispatch_tasks) {
 		if (!amdgpu_device_has_dc_support(adev)) {
 			mutex_lock(&adev->pm.mutex);

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

@@ -172,6 +172,7 @@ static void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base,
 	 * is validated on next vm use to avoid fault.
 	 * */
 	list_move_tail(&base->vm_status, &vm->evicted);
+	base->moved = true;
 }
 
 /**
@@ -369,7 +370,6 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
 	uint64_t addr;
 	int r;
 
-	addr = amdgpu_bo_gpu_offset(bo);
 	entries = amdgpu_bo_size(bo) / 8;
 
 	if (pte_support_ats) {
@@ -401,6 +401,7 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
 	if (r)
 		goto error;
 
+	addr = amdgpu_bo_gpu_offset(bo);
 	if (ats_entries) {
 		uint64_t ats_value;
 
@@ -2483,28 +2484,52 @@ static uint32_t amdgpu_vm_get_block_size(uint64_t vm_size)
  * amdgpu_vm_adjust_size - adjust vm size, block size and fragment size
  *
  * @adev: amdgpu_device pointer
- * @vm_size: the default vm size if it's set auto
+ * @min_vm_size: the minimum vm size in GB if it's set auto
  * @fragment_size_default: Default PTE fragment size
  * @max_level: max VMPT level
  * @max_bits: max address space size in bits
  *
  */
-void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t vm_size,
+void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t min_vm_size,
 			   uint32_t fragment_size_default, unsigned max_level,
 			   unsigned max_bits)
 {
+	unsigned int max_size = 1 << (max_bits - 30);
+	unsigned int vm_size;
 	uint64_t tmp;
 
 	/* adjust vm size first */
 	if (amdgpu_vm_size != -1) {
-		unsigned max_size = 1 << (max_bits - 30);
-
 		vm_size = amdgpu_vm_size;
 		if (vm_size > max_size) {
 			dev_warn(adev->dev, "VM size (%d) too large, max is %u GB\n",
 				 amdgpu_vm_size, max_size);
 			vm_size = max_size;
 		}
+	} else {
+		struct sysinfo si;
+		unsigned int phys_ram_gb;
+
+		/* Optimal VM size depends on the amount of physical
+		 * RAM available. Underlying requirements and
+		 * assumptions:
+		 *
+		 *  - Need to map system memory and VRAM from all GPUs
+		 *     - VRAM from other GPUs not known here
+		 *     - Assume VRAM <= system memory
+		 *  - On GFX8 and older, VM space can be segmented for
+		 *    different MTYPEs
+		 *  - Need to allow room for fragmentation, guard pages etc.
+		 *
+		 * This adds up to a rough guess of system memory x3.
+		 * Round up to power of two to maximize the available
+		 * VM size with the given page table size.
+		 */
+		si_meminfo(&si);
+		phys_ram_gb = ((uint64_t)si.totalram * si.mem_unit +
+			       (1 << 30) - 1) >> 30;
+		vm_size = roundup_pow_of_two(
+			min(max(phys_ram_gb * 3, min_vm_size), max_size));
 	}
 
 	adev->vm_manager.max_pfn = (uint64_t)vm_size << 18;

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

@@ -321,7 +321,7 @@ struct amdgpu_bo_va_mapping *amdgpu_vm_bo_lookup_mapping(struct amdgpu_vm *vm,
 void amdgpu_vm_bo_trace_cs(struct amdgpu_vm *vm, struct ww_acquire_ctx *ticket);
 void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
 		      struct amdgpu_bo_va *bo_va);
-void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t vm_size,
+void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t min_vm_size,
 			   uint32_t fragment_size_default, unsigned max_level,
 			   unsigned max_bits);
 int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -5664,6 +5664,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
 	if (amdgpu_sriov_vf(adev))
 		return 0;
 
+	if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_SMG |
+				AMD_PG_SUPPORT_RLC_SMU_HS |
+				AMD_PG_SUPPORT_CP |
+				AMD_PG_SUPPORT_GFX_DMG))
+		adev->gfx.rlc.funcs->enter_safe_mode(adev);
 	switch (adev->asic_type) {
 	case CHIP_CARRIZO:
 	case CHIP_STONEY:
@@ -5713,7 +5718,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
 	default:
 		break;
 	}
-
+	if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_SMG |
+				AMD_PG_SUPPORT_RLC_SMU_HS |
+				AMD_PG_SUPPORT_CP |
+				AMD_PG_SUPPORT_GFX_DMG))
+		adev->gfx.rlc.funcs->exit_safe_mode(adev);
 	return 0;
 }
 

drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c

@@ -632,12 +632,6 @@ static void gmc_v6_0_gart_disable(struct amdgpu_device *adev)
 	amdgpu_gart_table_vram_unpin(adev);
 }
 
-static void gmc_v6_0_gart_fini(struct amdgpu_device *adev)
-{
-	amdgpu_gart_table_vram_free(adev);
-	amdgpu_gart_fini(adev);
-}
-
 static void gmc_v6_0_vm_decode_fault(struct amdgpu_device *adev,
 				     u32 status, u32 addr, u32 mc_client)
 {
@@ -935,8 +929,9 @@ static int gmc_v6_0_sw_fini(void *handle)
 
 	amdgpu_gem_force_release(adev);
 	amdgpu_vm_manager_fini(adev);
-	gmc_v6_0_gart_fini(adev);
+	amdgpu_gart_table_vram_free(adev);
 	amdgpu_bo_fini(adev);
+	amdgpu_gart_fini(adev);
 	release_firmware(adev->gmc.fw);
 	adev->gmc.fw = NULL;
 

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

@@ -746,19 +746,6 @@ static void gmc_v7_0_gart_disable(struct amdgpu_device *adev)
 	amdgpu_gart_table_vram_unpin(adev);
 }
 
-/**
- * gmc_v7_0_gart_fini - vm fini callback
- *
- * @adev: amdgpu_device pointer
- *
- * Tears down the driver GART/VM setup (CIK).
- */
-static void gmc_v7_0_gart_fini(struct amdgpu_device *adev)
-{
-	amdgpu_gart_table_vram_free(adev);
-	amdgpu_gart_fini(adev);
-}
-
 /**
  * gmc_v7_0_vm_decode_fault - print human readable fault info
  *
@@ -1095,8 +1082,9 @@ static int gmc_v7_0_sw_fini(void *handle)
 	amdgpu_gem_force_release(adev);
 	amdgpu_vm_manager_fini(adev);
 	kfree(adev->gmc.vm_fault_info);
-	gmc_v7_0_gart_fini(adev);
+	amdgpu_gart_table_vram_free(adev);
 	amdgpu_bo_fini(adev);
+	amdgpu_gart_fini(adev);
 	release_firmware(adev->gmc.fw);
 	adev->gmc.fw = NULL;
 

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

@@ -968,19 +968,6 @@ static void gmc_v8_0_gart_disable(struct amdgpu_device *adev)
 	amdgpu_gart_table_vram_unpin(adev);
 }
 
-/**
- * gmc_v8_0_gart_fini - vm fini callback
- *
- * @adev: amdgpu_device pointer
- *
- * Tears down the driver GART/VM setup (CIK).
- */
-static void gmc_v8_0_gart_fini(struct amdgpu_device *adev)
-{
-	amdgpu_gart_table_vram_free(adev);
-	amdgpu_gart_fini(adev);
-}
-
 /**
  * gmc_v8_0_vm_decode_fault - print human readable fault info
  *
@@ -1199,8 +1186,9 @@ static int gmc_v8_0_sw_fini(void *handle)
 	amdgpu_gem_force_release(adev);
 	amdgpu_vm_manager_fini(adev);
 	kfree(adev->gmc.vm_fault_info);
-	gmc_v8_0_gart_fini(adev);
+	amdgpu_gart_table_vram_free(adev);
 	amdgpu_bo_fini(adev);
+	amdgpu_gart_fini(adev);
 	release_firmware(adev->gmc.fw);
 	adev->gmc.fw = NULL;
 

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -942,26 +942,12 @@ static int gmc_v9_0_sw_init(void *handle)
 	return 0;
 }
 
-/**
- * gmc_v9_0_gart_fini - vm fini callback
- *
- * @adev: amdgpu_device pointer
- *
- * Tears down the driver GART/VM setup (CIK).
- */
-static void gmc_v9_0_gart_fini(struct amdgpu_device *adev)
-{
-	amdgpu_gart_table_vram_free(adev);
-	amdgpu_gart_fini(adev);
-}
-
 static int gmc_v9_0_sw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	amdgpu_gem_force_release(adev);
 	amdgpu_vm_manager_fini(adev);
-	gmc_v9_0_gart_fini(adev);
 
 	/*
 	* TODO:
@@ -974,7 +960,9 @@ static int gmc_v9_0_sw_fini(void *handle)
 	*/
 	amdgpu_bo_free_kernel(&adev->stolen_vga_memory, NULL, NULL);
 
+	amdgpu_gart_table_vram_free(adev);
 	amdgpu_bo_fini(adev);
+	amdgpu_gart_fini(adev);
 
 	return 0;
 }

drivers/gpu/drm/amd/amdgpu/kv_dpm.c

@@ -65,8 +65,6 @@ static int kv_set_thermal_temperature_range(struct amdgpu_device *adev,
 					    int min_temp, int max_temp);
 static int kv_init_fps_limits(struct amdgpu_device *adev);
 
-static void kv_dpm_powergate_uvd(void *handle, bool gate);
-static void kv_dpm_powergate_vce(struct amdgpu_device *adev, bool gate);
 static void kv_dpm_powergate_samu(struct amdgpu_device *adev, bool gate);
 static void kv_dpm_powergate_acp(struct amdgpu_device *adev, bool gate);
 
@@ -1354,8 +1352,6 @@ static int kv_dpm_enable(struct amdgpu_device *adev)
 		return ret;
 	}
 
-	kv_update_current_ps(adev, adev->pm.dpm.boot_ps);
-
 	if (adev->irq.installed &&
 	    amdgpu_is_internal_thermal_sensor(adev->pm.int_thermal_type)) {
 		ret = kv_set_thermal_temperature_range(adev, KV_TEMP_RANGE_MIN, KV_TEMP_RANGE_MAX);
@@ -1374,6 +1370,8 @@ static int kv_dpm_enable(struct amdgpu_device *adev)
 
 static void kv_dpm_disable(struct amdgpu_device *adev)
 {
+	struct kv_power_info *pi = kv_get_pi(adev);
+
 	amdgpu_irq_put(adev, &adev->pm.dpm.thermal.irq,
 		       AMDGPU_THERMAL_IRQ_LOW_TO_HIGH);
 	amdgpu_irq_put(adev, &adev->pm.dpm.thermal.irq,
@@ -1387,8 +1385,10 @@ static void kv_dpm_disable(struct amdgpu_device *adev)
 	/* powerup blocks */
 	kv_dpm_powergate_acp(adev, false);
 	kv_dpm_powergate_samu(adev, false);
-	kv_dpm_powergate_vce(adev, false);
-	kv_dpm_powergate_uvd(adev, false);
+	if (pi->caps_vce_pg) /* power on the VCE block */
+		amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_VCEPowerON);
+	if (pi->caps_uvd_pg) /* power on the UVD block */
+		amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_UVDPowerON);
 
 	kv_enable_smc_cac(adev, false);
 	kv_enable_didt(adev, false);
@@ -1551,7 +1551,6 @@ static int kv_update_vce_dpm(struct amdgpu_device *adev,
 	int ret;
 
 	if (amdgpu_new_state->evclk > 0 && amdgpu_current_state->evclk == 0) {
-		kv_dpm_powergate_vce(adev, false);
 		if (pi->caps_stable_p_state)
 			pi->vce_boot_level = table->count - 1;
 		else
@@ -1573,7 +1572,6 @@ static int kv_update_vce_dpm(struct amdgpu_device *adev,
 		kv_enable_vce_dpm(adev, true);
 	} else if (amdgpu_new_state->evclk == 0 && amdgpu_current_state->evclk > 0) {
 		kv_enable_vce_dpm(adev, false);
-		kv_dpm_powergate_vce(adev, true);
 	}
 
 	return 0;
@@ -1702,24 +1700,32 @@ static void kv_dpm_powergate_uvd(void *handle, bool gate)
 	}
 }
 
-static void kv_dpm_powergate_vce(struct amdgpu_device *adev, bool gate)
+static void kv_dpm_powergate_vce(void *handle, bool gate)
 {
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	struct kv_power_info *pi = kv_get_pi(adev);
-
-	if (pi->vce_power_gated == gate)
-		return;
+	int ret;
 
 	pi->vce_power_gated = gate;
 
-	if (!pi->caps_vce_pg)
-		return;
-
-	if (gate)
-		amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_VCEPowerOFF);
-	else
-		amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_VCEPowerON);
+	if (gate) {
+		/* stop the VCE block */
+		ret = amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCE,
+							     AMD_PG_STATE_GATE);
+		kv_enable_vce_dpm(adev, false);
+		if (pi->caps_vce_pg) /* power off the VCE block */
+			amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_VCEPowerOFF);
+	} else {
+		if (pi->caps_vce_pg) /* power on the VCE block */
+			amdgpu_kv_notify_message_to_smu(adev, PPSMC_MSG_VCEPowerON);
+		kv_enable_vce_dpm(adev, true);
+		/* re-init the VCE block */
+		ret = amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCE,
+							     AMD_PG_STATE_UNGATE);
+	}
 }
 
+
 static void kv_dpm_powergate_samu(struct amdgpu_device *adev, bool gate)
 {
 	struct kv_power_info *pi = kv_get_pi(adev);
@@ -3061,7 +3067,7 @@ static int kv_dpm_hw_init(void *handle)
 	else
 		adev->pm.dpm_enabled = true;
 	mutex_unlock(&adev->pm.mutex);
-
+	amdgpu_pm_compute_clocks(adev);
 	return ret;
 }
 
@@ -3313,6 +3319,9 @@ static int kv_set_powergating_by_smu(void *handle,
 	case AMD_IP_BLOCK_TYPE_UVD:
 		kv_dpm_powergate_uvd(handle, gate);
 		break;
+	case AMD_IP_BLOCK_TYPE_VCE:
+		kv_dpm_powergate_vce(handle, gate);
+		break;
 	default:
 		break;
 	}

drivers/gpu/drm/amd/amdgpu/si_dpm.c

@@ -6887,7 +6887,6 @@ static int si_dpm_enable(struct amdgpu_device *adev)
 
 	si_enable_auto_throttle_source(adev, AMDGPU_DPM_AUTO_THROTTLE_SRC_THERMAL, true);
 	si_thermal_start_thermal_controller(adev);
-	ni_update_current_ps(adev, boot_ps);
 
 	return 0;
 }
@@ -7763,7 +7762,7 @@ static int si_dpm_hw_init(void *handle)
 	else
 		adev->pm.dpm_enabled = true;
 	mutex_unlock(&adev->pm.mutex);
-
+	amdgpu_pm_compute_clocks(adev);
 	return ret;
 }
 

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c

@@ -480,12 +480,20 @@ void pp_rv_set_display_requirement(struct pp_smu *pp,
 {
 	struct dc_context *ctx = pp->ctx;
 	struct amdgpu_device *adev = ctx->driver_context;
+	void *pp_handle = adev->powerplay.pp_handle;
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	struct pp_display_clock_request clock = {0};
 
-	if (!pp_funcs || !pp_funcs->display_configuration_changed)
+	if (!pp_funcs || !pp_funcs->display_clock_voltage_request)
 		return;
 
-	amdgpu_dpm_display_configuration_changed(adev);
+	clock.clock_type = amd_pp_dcf_clock;
+	clock.clock_freq_in_khz = req->hard_min_dcefclk_khz;
+	pp_funcs->display_clock_voltage_request(pp_handle, &clock);
+
+	clock.clock_type = amd_pp_f_clock;
+	clock.clock_freq_in_khz = req->hard_min_fclk_khz;
+	pp_funcs->display_clock_voltage_request(pp_handle, &clock);
 }
 
 void pp_rv_set_wm_ranges(struct pp_smu *pp,

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -754,8 +754,12 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason)
 			 * fail-safe mode
 			 */
 			if (dc_is_hdmi_signal(link->connector_signal) ||
-			    dc_is_dvi_signal(link->connector_signal))
+			    dc_is_dvi_signal(link->connector_signal)) {
+				if (prev_sink != NULL)
+					dc_sink_release(prev_sink);
+
 				return false;
+			}
 		default:
 			break;
 		}

drivers/gpu/drm/i915/i915_vma.c

@@ -199,7 +199,6 @@ vma_create(struct drm_i915_gem_object *obj,
 		vma->flags |= I915_VMA_GGTT;
 		list_add(&vma->obj_link, &obj->vma_list);
 	} else {
-		i915_ppgtt_get(i915_vm_to_ppgtt(vm));
 		list_add_tail(&vma->obj_link, &obj->vma_list);
 	}
 
@@ -807,9 +806,6 @@ static void __i915_vma_destroy(struct i915_vma *vma)
 	if (vma->obj)
 		rb_erase(&vma->obj_node, &vma->obj->vma_tree);
 
-	if (!i915_vma_is_ggtt(vma))
-		i915_ppgtt_put(i915_vm_to_ppgtt(vma->vm));
-
 	rbtree_postorder_for_each_entry_safe(iter, n, &vma->active, node) {
 		GEM_BUG_ON(i915_gem_active_isset(&iter->base));
 		kfree(iter);

drivers/gpu/drm/i915/intel_audio.c

@@ -962,9 +962,6 @@ void i915_audio_component_init(struct drm_i915_private *dev_priv)
 {
 	int ret;
 
-	if (INTEL_INFO(dev_priv)->num_pipes == 0)
-		return;
-
 	ret = component_add(dev_priv->drm.dev, &i915_audio_component_bind_ops);
 	if (ret < 0) {
 		DRM_ERROR("failed to add audio component (%d)\n", ret);

drivers/gpu/drm/i915/intel_display.c

@@ -2988,6 +2988,7 @@ static int skl_check_main_surface(const struct intel_crtc_state *crtc_state,
 	int w = drm_rect_width(&plane_state->base.src) >> 16;
 	int h = drm_rect_height(&plane_state->base.src) >> 16;
 	int dst_x = plane_state->base.dst.x1;
+	int dst_w = drm_rect_width(&plane_state->base.dst);
 	int pipe_src_w = crtc_state->pipe_src_w;
 	int max_width = skl_max_plane_width(fb, 0, rotation);
 	int max_height = 4096;
@@ -3009,10 +3010,10 @@ static int skl_check_main_surface(const struct intel_crtc_state *crtc_state,
 	 * screen may cause FIFO underflow and display corruption.
 	 */
 	if ((IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
-	    (dst_x + w < 4 || dst_x > pipe_src_w - 4)) {
+	    (dst_x + dst_w < 4 || dst_x > pipe_src_w - 4)) {
 		DRM_DEBUG_KMS("requested plane X %s position %d invalid (valid range %d-%d)\n",
-			      dst_x + w < 4 ? "end" : "start",
-			      dst_x + w < 4 ? dst_x + w : dst_x,
+			      dst_x + dst_w < 4 ? "end" : "start",
+			      dst_x + dst_w < 4 ? dst_x + dst_w : dst_x,
 			      4, pipe_src_w - 4);
 		return -ERANGE;
 	}

drivers/gpu/drm/i915/intel_hdmi.c

@@ -943,8 +943,12 @@ static int intel_hdmi_hdcp_write(struct intel_digital_port *intel_dig_port,
 
 	ret = i2c_transfer(adapter, &msg, 1);
 	if (ret == 1)
-		return 0;
-	return ret >= 0 ? -EIO : ret;
+		ret = 0;
+	else if (ret >= 0)
+		ret = -EIO;
+
+	kfree(write_buf);
+	return ret;
 }
 
 static

drivers/gpu/drm/i915/intel_lspcon.c

@@ -74,7 +74,7 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon,
 	DRM_DEBUG_KMS("Waiting for LSPCON mode %s to settle\n",
 		      lspcon_mode_name(mode));
 
-	wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 100);
+	wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 400);
 	if (current_mode != mode)
 		DRM_ERROR("LSPCON mode hasn't settled\n");
 

drivers/gpu/drm/mediatek/mtk_disp_ovl.c

@@ -132,6 +132,11 @@ static void mtk_ovl_config(struct mtk_ddp_comp *comp, unsigned int w,
 	writel(0x0, comp->regs + DISP_REG_OVL_RST);
 }
 
+static unsigned int mtk_ovl_layer_nr(struct mtk_ddp_comp *comp)
+{
+	return 4;
+}
+
 static void mtk_ovl_layer_on(struct mtk_ddp_comp *comp, unsigned int idx)
 {
 	unsigned int reg;
@@ -157,6 +162,11 @@ static void mtk_ovl_layer_off(struct mtk_ddp_comp *comp, unsigned int idx)
 
 static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt)
 {
+	/* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
+	 * is defined in mediatek HW data sheet.
+	 * The alphabet order in XXX is no relation to data
+	 * arrangement in memory.
+	 */
 	switch (fmt) {
 	default:
 	case DRM_FORMAT_RGB565:
@@ -221,6 +231,7 @@ static const struct mtk_ddp_comp_funcs mtk_disp_ovl_funcs = {
 	.stop = mtk_ovl_stop,
 	.enable_vblank = mtk_ovl_enable_vblank,
 	.disable_vblank = mtk_ovl_disable_vblank,
+	.layer_nr = mtk_ovl_layer_nr,
 	.layer_on = mtk_ovl_layer_on,
 	.layer_off = mtk_ovl_layer_off,
 	.layer_config = mtk_ovl_layer_config,

drivers/gpu/drm/mediatek/mtk_disp_rdma.c

@@ -31,14 +31,31 @@
 #define RDMA_REG_UPDATE_INT				BIT(0)
 #define DISP_REG_RDMA_GLOBAL_CON		0x0010
 #define RDMA_ENGINE_EN					BIT(0)
+#define RDMA_MODE_MEMORY				BIT(1)
 #define DISP_REG_RDMA_SIZE_CON_0		0x0014
+#define RDMA_MATRIX_ENABLE				BIT(17)
+#define RDMA_MATRIX_INT_MTX_SEL				GENMASK(23, 20)
+#define RDMA_MATRIX_INT_MTX_BT601_to_RGB		(6 << 20)
 #define DISP_REG_RDMA_SIZE_CON_1		0x0018
 #define DISP_REG_RDMA_TARGET_LINE		0x001c
+#define DISP_RDMA_MEM_CON			0x0024
+#define MEM_MODE_INPUT_FORMAT_RGB565			(0x000 << 4)
+#define MEM_MODE_INPUT_FORMAT_RGB888			(0x001 << 4)
+#define MEM_MODE_INPUT_FORMAT_RGBA8888			(0x002 << 4)
+#define MEM_MODE_INPUT_FORMAT_ARGB8888			(0x003 << 4)
+#define MEM_MODE_INPUT_FORMAT_UYVY			(0x004 << 4)
+#define MEM_MODE_INPUT_FORMAT_YUYV			(0x005 << 4)
+#define MEM_MODE_INPUT_SWAP				BIT(8)
+#define DISP_RDMA_MEM_SRC_PITCH			0x002c
+#define DISP_RDMA_MEM_GMC_SETTING_0		0x0030
 #define DISP_REG_RDMA_FIFO_CON			0x0040
 #define RDMA_FIFO_UNDERFLOW_EN				BIT(31)
 #define RDMA_FIFO_PSEUDO_SIZE(bytes)			(((bytes) / 16) << 16)
 #define RDMA_OUTPUT_VALID_FIFO_THRESHOLD(bytes)		((bytes) / 16)
 #define RDMA_FIFO_SIZE(rdma)			((rdma)->data->fifo_size)
+#define DISP_RDMA_MEM_START_ADDR		0x0f00
+
+#define RDMA_MEM_GMC				0x40402020
 
 struct mtk_disp_rdma_data {
 	unsigned int fifo_size;
@@ -138,12 +155,87 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width,
 	writel(reg, comp->regs + DISP_REG_RDMA_FIFO_CON);
 }
 
+static unsigned int rdma_fmt_convert(struct mtk_disp_rdma *rdma,
+				     unsigned int fmt)
+{
+	/* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
+	 * is defined in mediatek HW data sheet.
+	 * The alphabet order in XXX is no relation to data
+	 * arrangement in memory.
+	 */
+	switch (fmt) {
+	default:
+	case DRM_FORMAT_RGB565:
+		return MEM_MODE_INPUT_FORMAT_RGB565;
+	case DRM_FORMAT_BGR565:
+		return MEM_MODE_INPUT_FORMAT_RGB565 | MEM_MODE_INPUT_SWAP;
+	case DRM_FORMAT_RGB888:
+		return MEM_MODE_INPUT_FORMAT_RGB888;
+	case DRM_FORMAT_BGR888:
+		return MEM_MODE_INPUT_FORMAT_RGB888 | MEM_MODE_INPUT_SWAP;
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_RGBA8888:
+		return MEM_MODE_INPUT_FORMAT_ARGB8888;
+	case DRM_FORMAT_BGRX8888:
+	case DRM_FORMAT_BGRA8888:
+		return MEM_MODE_INPUT_FORMAT_ARGB8888 | MEM_MODE_INPUT_SWAP;
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+		return MEM_MODE_INPUT_FORMAT_RGBA8888;
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ABGR8888:
+		return MEM_MODE_INPUT_FORMAT_RGBA8888 | MEM_MODE_INPUT_SWAP;
+	case DRM_FORMAT_UYVY:
+		return MEM_MODE_INPUT_FORMAT_UYVY;
+	case DRM_FORMAT_YUYV:
+		return MEM_MODE_INPUT_FORMAT_YUYV;
+	}
+}
+
+static unsigned int mtk_rdma_layer_nr(struct mtk_ddp_comp *comp)
+{
+	return 1;
+}
+
+static void mtk_rdma_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
+				  struct mtk_plane_state *state)
+{
+	struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
+	struct mtk_plane_pending_state *pending = &state->pending;
+	unsigned int addr = pending->addr;
+	unsigned int pitch = pending->pitch & 0xffff;
+	unsigned int fmt = pending->format;
+	unsigned int con;
+
+	con = rdma_fmt_convert(rdma, fmt);
+	writel_relaxed(con, comp->regs + DISP_RDMA_MEM_CON);
+
+	if (fmt == DRM_FORMAT_UYVY || fmt == DRM_FORMAT_YUYV) {
+		rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0,
+				 RDMA_MATRIX_ENABLE, RDMA_MATRIX_ENABLE);
+		rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0,
+				 RDMA_MATRIX_INT_MTX_SEL,
+				 RDMA_MATRIX_INT_MTX_BT601_to_RGB);
+	} else {
+		rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0,
+				 RDMA_MATRIX_ENABLE, 0);
+	}
+
+	writel_relaxed(addr, comp->regs + DISP_RDMA_MEM_START_ADDR);
+	writel_relaxed(pitch, comp->regs + DISP_RDMA_MEM_SRC_PITCH);
+	writel(RDMA_MEM_GMC, comp->regs + DISP_RDMA_MEM_GMC_SETTING_0);
+	rdma_update_bits(comp, DISP_REG_RDMA_GLOBAL_CON,
+			 RDMA_MODE_MEMORY, RDMA_MODE_MEMORY);
+}
+
 static const struct mtk_ddp_comp_funcs mtk_disp_rdma_funcs = {
 	.config = mtk_rdma_config,
 	.start = mtk_rdma_start,
 	.stop = mtk_rdma_stop,
 	.enable_vblank = mtk_rdma_enable_vblank,
 	.disable_vblank = mtk_rdma_disable_vblank,
+	.layer_nr = mtk_rdma_layer_nr,
+	.layer_config = mtk_rdma_layer_config,
 };
 
 static int mtk_disp_rdma_bind(struct device *dev, struct device *master,

drivers/gpu/drm/mediatek/mtk_drm_crtc.c

@@ -45,7 +45,8 @@ struct mtk_drm_crtc {
 	bool				pending_needs_vblank;
 	struct drm_pending_vblank_event	*event;
 
-	struct drm_plane		planes[OVL_LAYER_NR];
+	struct drm_plane		*planes;
+	unsigned int			layer_nr;
 	bool				pending_planes;
 
 	void __iomem			*config_regs;
@@ -171,9 +172,9 @@ static void mtk_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
 static int mtk_drm_crtc_enable_vblank(struct drm_crtc *crtc)
 {
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
-	struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
+	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 
-	mtk_ddp_comp_enable_vblank(ovl, &mtk_crtc->base);
+	mtk_ddp_comp_enable_vblank(comp, &mtk_crtc->base);
 
 	return 0;
 }
@@ -181,9 +182,9 @@ static int mtk_drm_crtc_enable_vblank(struct drm_crtc *crtc)
 static void mtk_drm_crtc_disable_vblank(struct drm_crtc *crtc)
 {
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
-	struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
+	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 
-	mtk_ddp_comp_disable_vblank(ovl);
+	mtk_ddp_comp_disable_vblank(comp);
 }
 
 static int mtk_crtc_ddp_clk_enable(struct mtk_drm_crtc *mtk_crtc)
@@ -286,7 +287,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
 	}
 
 	/* Initially configure all planes */
-	for (i = 0; i < OVL_LAYER_NR; i++) {
+	for (i = 0; i < mtk_crtc->layer_nr; i++) {
 		struct drm_plane *plane = &mtk_crtc->planes[i];
 		struct mtk_plane_state *plane_state;
 
@@ -334,7 +335,7 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
 {
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 	struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
-	struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
+	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 	unsigned int i;
 
 	/*
@@ -343,7 +344,7 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
 	 * queue update module registers on vblank.
 	 */
 	if (state->pending_config) {
-		mtk_ddp_comp_config(ovl, state->pending_width,
+		mtk_ddp_comp_config(comp, state->pending_width,
 				    state->pending_height,
 				    state->pending_vrefresh, 0);
 
@@ -351,14 +352,14 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
 	}
 
 	if (mtk_crtc->pending_planes) {
-		for (i = 0; i < OVL_LAYER_NR; i++) {
+		for (i = 0; i < mtk_crtc->layer_nr; i++) {
 			struct drm_plane *plane = &mtk_crtc->planes[i];
 			struct mtk_plane_state *plane_state;
 
 			plane_state = to_mtk_plane_state(plane->state);
 
 			if (plane_state->pending.config) {
-				mtk_ddp_comp_layer_config(ovl, i, plane_state);
+				mtk_ddp_comp_layer_config(comp, i, plane_state);
 				plane_state->pending.config = false;
 			}
 		}
@@ -370,12 +371,12 @@ static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
 				       struct drm_crtc_state *old_state)
 {
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
-	struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
+	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 	int ret;
 
 	DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
 
-	ret = mtk_smi_larb_get(ovl->larb_dev);
+	ret = mtk_smi_larb_get(comp->larb_dev);
 	if (ret) {
 		DRM_ERROR("Failed to get larb: %d\n", ret);
 		return;
@@ -383,7 +384,7 @@ static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
 
 	ret = mtk_crtc_ddp_hw_init(mtk_crtc);
 	if (ret) {
-		mtk_smi_larb_put(ovl->larb_dev);
+		mtk_smi_larb_put(comp->larb_dev);
 		return;
 	}
 
@@ -395,7 +396,7 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
 					struct drm_crtc_state *old_state)
 {
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
-	struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
+	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 	int i;
 
 	DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
@@ -403,7 +404,7 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
 		return;
 
 	/* Set all pending plane state to disabled */
-	for (i = 0; i < OVL_LAYER_NR; i++) {
+	for (i = 0; i < mtk_crtc->layer_nr; i++) {
 		struct drm_plane *plane = &mtk_crtc->planes[i];
 		struct mtk_plane_state *plane_state;
 
@@ -418,7 +419,7 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
 
 	drm_crtc_vblank_off(crtc);
 	mtk_crtc_ddp_hw_fini(mtk_crtc);
-	mtk_smi_larb_put(ovl->larb_dev);
+	mtk_smi_larb_put(comp->larb_dev);
 
 	mtk_crtc->enabled = false;
 }
@@ -450,7 +451,7 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc,
 
 	if (mtk_crtc->event)
 		mtk_crtc->pending_needs_vblank = true;
-	for (i = 0; i < OVL_LAYER_NR; i++) {
+	for (i = 0; i < mtk_crtc->layer_nr; i++) {
 		struct drm_plane *plane = &mtk_crtc->planes[i];
 		struct mtk_plane_state *plane_state;
 
@@ -516,7 +517,7 @@ err_cleanup_crtc:
 	return ret;
 }
 
-void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *ovl)
+void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp)
 {
 	struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 	struct mtk_drm_private *priv = crtc->dev->dev_private;
@@ -598,7 +599,12 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 		mtk_crtc->ddp_comp[i] = comp;
 	}
 
-	for (zpos = 0; zpos < OVL_LAYER_NR; zpos++) {
+	mtk_crtc->layer_nr = mtk_ddp_comp_layer_nr(mtk_crtc->ddp_comp[0]);
+	mtk_crtc->planes = devm_kzalloc(dev, mtk_crtc->layer_nr *
+					sizeof(struct drm_plane),
+					GFP_KERNEL);
+
+	for (zpos = 0; zpos < mtk_crtc->layer_nr; zpos++) {
 		type = (zpos == 0) ? DRM_PLANE_TYPE_PRIMARY :
 				(zpos == 1) ? DRM_PLANE_TYPE_CURSOR :
 						DRM_PLANE_TYPE_OVERLAY;
@@ -609,7 +615,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 	}
 
 	ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, &mtk_crtc->planes[0],
-				&mtk_crtc->planes[1], pipe);
+				mtk_crtc->layer_nr > 1 ? &mtk_crtc->planes[1] :
+				NULL, pipe);
 	if (ret < 0)
 		goto unprepare;
 	drm_mode_crtc_set_gamma_size(&mtk_crtc->base, MTK_LUT_SIZE);

drivers/gpu/drm/mediatek/mtk_drm_crtc.h

@@ -18,13 +18,12 @@
 #include "mtk_drm_ddp_comp.h"
 #include "mtk_drm_plane.h"
 
-#define OVL_LAYER_NR	4
 #define MTK_LUT_SIZE	512
 #define MTK_MAX_BPC	10
 #define MTK_MIN_BPC	3
 
 void mtk_drm_crtc_commit(struct drm_crtc *crtc);
-void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *ovl);
+void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp);
 int mtk_drm_crtc_create(struct drm_device *drm_dev,
 			const enum mtk_ddp_comp_id *path,
 			unsigned int path_len);