Merge tag 'usb-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull usb/phy/extcon updates from Greg KH:
"Here is the big USB, and PHY, and extcon, patchsets for 4.9-rc1.

Full details are in the shortlog, but generally a lot of new hardware
support, usb gadget updates, and Wolfram's great cleanup of USB error
message handling, making the kernel image a tad bit smaller.

All of this has been in linux-next with no reported issues"

* tag 'usb-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (343 commits)
Revert "usbtmc: convert to devm_kzalloc"
USB: serial: cp210x: Add ID for a Juniper console
usb: Kconfig: using select for USB_COMMON dependency
bluetooth: bcm203x: don't print error when allocating urb fails
mmc: host: vub300: don't print error when allocating urb fails
usb: hub: change CLEAR_FEATURE to SET_FEATURE
usb: core: Introduce a USB port LED trigger
USB: bcma: drop Northstar PHY 2.0 initialization code
usb: core: hcd: add missing header dependencies
usb: musb: da8xx: fix error handling message in probe
usb: musb: Fix session based PM for first invalid VBUS
usb: musb: Fix PM runtime for disconnect after unconfigure
musb: Export musb_root_disconnect for use in modules
usb: misc: legousbtower: Fix NULL pointer deference
cdc-acm: hardening against malicious devices
Revert "usb: gadget: NCM: Protect dev->port_usb using dev->lock"
include: extcon: Fix compilation error caused because of incomplete merge
MAINTAINERS: add tree entry for USB Serial
phy-twl4030-usb: initialize charging-related stuff via pm_runtime
phy-twl4030-usb: better handle musb_mailbox() failure
...

Documentation/ABI/testing/sysfs-class-led-trigger-usbport

···
+What:		/sys/class/leds/<led>/ports/<port>
+Date:		September 2016
+KernelVersion:	4.9
+Contact:	[e-mail]
+		[e-mail]
+Description:
+		Every dir entry represents a single USB port that can be
+		selected for the USB port trigger. Selecting ports makes trigger
+		observing them for any connected devices and lighting on LED if
+		there are any.
+		Echoing "1" value selects USB port. Echoing "0" unselects it.
+		Current state can be also read.

Documentation/devicetree/bindings/extcon/qcom,pm8941-misc.txt

···
+Qualcomm's PM8941 USB ID Extcon device
+
+Some Qualcomm PMICs have a "misc" module that can be used to detect when
+the USB ID pin has been pulled low or high.
+
+PROPERTIES
+
+- compatible:
+    Usage: required
+    Value type: <string>
+    Definition: Should contain "qcom,pm8941-misc";
+
+- reg:
+    Usage: required
+    Value type: <u32>
+    Definition: Should contain the offset to the misc address space
+
+- interrupts:
+    Usage: required
+    Value type: <prop-encoded-array>
+    Definition: Should contain the usb id interrupt
+
+- interrupt-names:
+    Usage: required
+    Value type: <stringlist>
+    Definition: Should contain the string "usb_id" for the usb id interrupt
+
+Example:
+
+	pmic {
+		usb_id: misc@900 {
+			compatible = "qcom,pm8941-misc";
+			reg = <0x900>;
+			interrupts = <0x0 0x9 0 IRQ_TYPE_EDGE_BOTH>;
+			interrupt-names = "usb_id";
+		};
+	}
+
+	usb-controller {
+		extcon = <&usb_id>;
+	};

Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.txt

···
+Driver for Broadcom Northstar USB 3.0 PHY
+
+Required properties:
+
+- compatible: one of: "brcm,ns-ax-usb3-phy", "brcm,ns-bx-usb3-phy".
+- reg: register mappings for DMP (Device Management Plugin) and ChipCommon B
+       MMI.
+- reg-names: "dmp" and "ccb-mii"
+
+Initialization of USB 3.0 PHY depends on Northstar version. There are currently
+three known series: Ax, Bx and Cx.
+Known A0: BCM4707 rev 0
+Known B0: BCM4707 rev 4, BCM53573 rev 2
+Known B1: BCM4707 rev 6
+Known C0: BCM47094 rev 0
+
+Example:
+	usb3-phy {
+		compatible = "brcm,ns-ax-usb3-phy";
+		reg = <0x18105000 0x1000>, <0x18003000 0x1000>;
+		reg-names = "dmp", "ccb-mii";
+		#phy-cells = <0>;
+	};

Documentation/devicetree/bindings/phy/mxs-usb-phy.txt

···
 - interrupts: Should contain phy interrupt
 - fsl,anatop: phandle for anatop register, it is only for imx6 SoC series
 
+Optional properties:
+- fsl,tx-cal-45-dn-ohms: Integer [30-55]. Resistance (in ohms) of switchable
+  high-speed trimming resistor connected in parallel with the 45 ohm resistor
+  that terminates the DN output signal. Default: 45
+- fsl,tx-cal-45-dp-ohms: Integer [30-55]. Resistance (in ohms) of switchable
+  high-speed trimming resistor connected in parallel with the 45 ohm resistor
+  that terminates the DP output signal. Default: 45
+- fsl,tx-d-cal: Integer [79-119]. Current trimming value (as a percentage) of
+  the 17.78mA TX reference current. Default: 100
+
 Example:
 usbphy1: usbphy@020c9000 {
 	compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";

Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt

···
+ROCKCHIP USB2.0 PHY WITH INNO IP BLOCK
+
+Required properties (phy (parent) node):
+ - compatible : should be one of the listed compatibles:
+	* "rockchip,rk3366-usb2phy"
+	* "rockchip,rk3399-usb2phy"
+ - reg : the address offset of grf for usb-phy configuration.
+ - #clock-cells : should be 0.
+ - clock-output-names : specify the 480m output clock name.
+
+Optional properties:
+ - clocks : phandle + phy specifier pair, for the input clock of phy.
+ - clock-names : input clock name of phy, must be "phyclk".
+
+Required nodes : a sub-node is required for each port the phy provides.
+		 The sub-node name is used to identify host or otg port,
+		 and shall be the following entries:
+	* "otg-port" : the name of otg port.
+	* "host-port" : the name of host port.
+
+Required properties (port (child) node):
+ - #phy-cells : must be 0. See ./phy-bindings.txt for details.
+ - interrupts : specify an interrupt for each entry in interrupt-names.
+ - interrupt-names : a list which shall be the following entries:
+	* "otg-id" : for the otg id interrupt.
+	* "otg-bvalid" : for the otg vbus interrupt.
+	* "linestate" : for the host/otg linestate interrupt.
+
+Optional properties:
+ - phy-supply : phandle to a regulator that provides power to VBUS.
+		See ./phy-bindings.txt for details.
+
+Example:
+
+grf: syscon@ff770000 {
+	compatible = "rockchip,rk3366-grf", "syscon", "simple-mfd";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+...
+
+	u2phy: usb2-phy@700 {
+		compatible = "rockchip,rk3366-usb2phy";
+		reg = <0x700 0x2c>;
+		#clock-cells = <0>;
+		clock-output-names = "sclk_otgphy0_480m";
+
+		u2phy_otg: otg-port {
+			#phy-cells = <0>;
+			interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "otg-id", "otg-bvalid", "linestate";
+			status = "okay";
+		};
+
+		u2phy_host: host-port {
+			#phy-cells = <0>;
+			interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "linestate";
+			status = "okay";
+		};
+	};
+};

Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt

···
+* ROCKCHIP type-c PHY
+---------------------
+
+Required properties:
+ - compatible : must be "rockchip,rk3399-typec-phy"
+ - reg: Address and length of the usb phy control register set
+ - rockchip,grf : phandle to the syscon managing the "general
+   register files"
+ - clocks : phandle + clock specifier for the phy clocks
+ - clock-names : string, clock name, must be "tcpdcore", "tcpdphy-ref";
+ - assigned-clocks: main clock, should be <&cru SCLK_UPHY0_TCPDCORE> or
+		    <&cru SCLK_UPHY1_TCPDCORE>;
+ - assigned-clock-rates : the phy core clk frequency, shall be: 50000000
+ - resets : a list of phandle + reset specifier pairs
+ - reset-names : string reset name, must be:
+		 "uphy", "uphy-pipe", "uphy-tcphy"
+ - extcon : extcon specifier for the Power Delivery
+
+Note, there are 2 type-c phys for RK3399, and they are almost identical, except
+these registers(description below), every register node contains 3 sections:
+offset, enable bit, write mask bit.
+ - rockchip,typec-conn-dir : the register of type-c connector direction,
+   for type-c phy0, it must be <0xe580 0 16>;
+   for type-c phy1, it must be <0xe58c 0 16>;
+ - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable
+   control.
+   for type-c phy0, it must be <0xe580 3 19>;
+   for type-c phy1, it must be <0xe58c 3 19>;
+ - rockchip,external-psm : the register of type-c phy external psm clock
+   selection.
+   for type-c phy0, it must be <0xe588 14 30>;
+   for type-c phy1, it must be <0xe594 14 30>;
+ - rockchip,pipe-status : the register of type-c phy pipe status.
+   for type-c phy0, it must be <0xe5c0 0 0>;
+   for type-c phy1, it must be <0xe5c0 16 16>;
+
+Required nodes : a sub-node is required for each port the phy provides.
+		 The sub-node name is used to identify dp or usb3 port,
+		 and shall be the following entries:
+	* "dp-port" : the name of DP port.
+	* "usb3-port" : the name of USB3 port.
+
+Required properties (port (child) node):
+- #phy-cells : must be 0, See ./phy-bindings.txt for details.
+
+Example:
+	tcphy0: phy@ff7c0000 {
+		compatible = "rockchip,rk3399-typec-phy";
+		reg = <0x0 0xff7c0000 0x0 0x40000>;
+		rockchip,grf = <&grf>;
+		extcon = <&fusb0>;
+		clocks = <&cru SCLK_UPHY0_TCPDCORE>,
+			 <&cru SCLK_UPHY0_TCPDPHY_REF>;
+		clock-names = "tcpdcore", "tcpdphy-ref";
+		assigned-clocks = <&cru SCLK_UPHY0_TCPDCORE>;
+		assigned-clock-rates = <50000000>;
+		resets = <&cru SRST_UPHY0>,
+			 <&cru SRST_UPHY0_PIPE_L00>,
+			 <&cru SRST_P_UPHY0_TCPHY>;
+		reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
+		rockchip,typec-conn-dir = <0xe580 0 16>;
+		rockchip,usb3tousb2-en = <0xe580 3 19>;
+		rockchip,external-psm = <0xe588 14 30>;
+		rockchip,pipe-status = <0xe5c0 0 0>;
+
+		tcphy0_dp: dp-port {
+			#phy-cells = <0>;
+		};
+
+		tcphy0_usb3: usb3-port {
+			#phy-cells = <0>;
+		};
+	};
+
+	tcphy1: phy@ff800000 {
+		compatible = "rockchip,rk3399-typec-phy";
+		reg = <0x0 0xff800000 0x0 0x40000>;
+		rockchip,grf = <&grf>;
+		extcon = <&fusb1>;
+		clocks = <&cru SCLK_UPHY1_TCPDCORE>,
+			 <&cru SCLK_UPHY1_TCPDPHY_REF>;
+		clock-names = "tcpdcore", "tcpdphy-ref";
+		assigned-clocks = <&cru SCLK_UPHY1_TCPDCORE>;
+		assigned-clock-rates = <50000000>;
+		resets = <&cru SRST_UPHY1>,
+			 <&cru SRST_UPHY1_PIPE_L00>,
+			 <&cru SRST_P_UPHY1_TCPHY>;
+		reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
+		rockchip,typec-conn-dir = <0xe58c 0 16>;
+		rockchip,usb3tousb2-en = <0xe58c 3 19>;
+		rockchip,external-psm = <0xe594 14 30>;
+		rockchip,pipe-status = <0xe5c0 16 16>;
+
+		tcphy1_dp: dp-port {
+			#phy-cells = <0>;
+		};
+
+		tcphy1_usb3: usb3-port {
+			#phy-cells = <0>;
+		};
+	};

Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt

···
 Required properties:
 - compatible: "renesas,usb2-phy-r8a7795" if the device is a part of an R8A7795
 	      SoC.
+	      "renesas,usb2-phy-r8a7796" if the device is a part of an R8A7796
+	      SoC.
 	      "renesas,rcar-gen3-usb2-phy" for a generic R-Car Gen3 compatible device.
 
 	      When compatible with the generic version, nodes must list the
···
 		compatible = "renesas,usb2-phy-r8a7795", "renesas,rcar-gen3-usb2-phy";
 		reg = <0 0xee080200 0 0x700>;
 		interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&mstp7_clks R8A7795_CLK_EHCI0>;
+		clocks = <&cpg CPG_MOD 703>;
 	};
 
 	usb-phy@ee0a0200 {
 		compatible = "renesas,usb2-phy-r8a7795", "renesas,rcar-gen3-usb2-phy";
 		reg = <0 0xee0a0200 0 0x700>;
-		clocks = <&mstp7_clks R8A7795_CLK_EHCI0>;
+		clocks = <&cpg CPG_MOD 702>;
 	};

Documentation/devicetree/bindings/phy/rockchip-pcie-phy.txt

···
+Rockchip PCIE PHY
+-----------------------
+
+Required properties:
+ - compatible: rockchip,rk3399-pcie-phy
+ - #phy-cells: must be 0
+ - clocks: Must contain an entry in clock-names.
+	See ../clocks/clock-bindings.txt for details.
+ - clock-names: Must be "refclk"
+ - resets: Must contain an entry in reset-names.
+	See ../reset/reset.txt for details.
+ - reset-names: Must be "phy"
+
+Example:
+
+grf: syscon@ff770000 {
+	compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	...
+
+	pcie_phy: pcie-phy {
+		compatible = "rockchip,rk3399-pcie-phy";
+		#phy-cells = <0>;
+		clocks = <&cru SCLK_PCIEPHY_REF>;
+		clock-names = "refclk";
+		resets = <&cru SRST_PCIEPHY>;
+		reset-names = "phy";
+	};
+};

Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt

···
 - clocks : phandle + clock specifier for the phy clocks
 - clock-names: string, clock name, must be "phyclk"
 - #clock-cells: for users of the phy-pll, should be 0
+- reset-names: Only allow the following entries:
+ - phy-reset
+- resets: Must contain an entry for each entry in reset-names.
 
 Example:
 

Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt

···
   * allwinner,sun8i-a23-usb-phy
   * allwinner,sun8i-a33-usb-phy
   * allwinner,sun8i-h3-usb-phy
+  * allwinner,sun50i-a64-usb-phy
 - reg : a list of offset + length pairs
 - reg-names :
   * "phy_ctrl"

Documentation/devicetree/bindings/phy/ti-phy.txt

···
 
 Required properties:
  - compatible: Should be "ti,omap-usb2"
+	       Should be "ti,dra7x-usb2" for the 1st instance of USB2 PHY on
+	       DRA7x
 	       Should be "ti,dra7x-usb2-phy2" for the 2nd instance of USB2 PHY
 	       in DRA7x
  - reg : Address and length of the register set for the device.

Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt

···
 - fsl,usbmisc: phandler of non-core register device, with one
   argument that indicate usb controller index
 - disable-over-current: disable over current detect
+- over-current-active-high: over current signal polarity is high active,
+  typically over current signal polarity is low active.
 - external-vbus-divider: enables off-chip resistor divider for Vbus
 
 Example:

Documentation/devicetree/bindings/usb/dwc2.txt

···
 - g-use-dma: enable dma usage in gadget driver.
 - g-rx-fifo-size: size of rx fifo size in gadget mode.
 - g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode.
-- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode.
+
+Deprecated properties:
+- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0)
+  in gadget mode.
 
 Example:
 

Documentation/devicetree/bindings/usb/dwc3-cavium.txt

···
+Cavium SuperSpeed DWC3 USB SoC controller
+
+Required properties:
+- compatible:	Should contain "cavium,octeon-7130-usb-uctl"
+
+Required child node:
+A child node must exist to represent the core DWC3 IP block. The name of
+the node is not important. The content of the node is defined in dwc3.txt.
+
+Example device node:
+
+		    uctl@1180069000000 {
+			    compatible = "cavium,octeon-7130-usb-uctl";
+			    reg = <0x00011800 0x69000000 0x00000000 0x00000100>;
+			    ranges;
+			    #address-cells = <0x00000002>;
+			    #size-cells = <0x00000002>;
+			    refclk-frequency = <0x05f5e100>;
+			    refclk-type-ss = "dlmc_ref_clk0";
+			    refclk-type-hs = "dlmc_ref_clk0";
+			    power = <0x00000002 0x00000002 0x00000001>;
+			    xhci@1690000000000 {
+				    compatible = "cavium,octeon-7130-xhci", "synopsys,dwc3";
+				    reg = <0x00016900 0x00000000 0x00000010 0x00000000>;
+				    interrupt-parent = <0x00000010>;
+				    interrupts = <0x00000009 0x00000004>;
+			    };
+		    };

Documentation/devicetree/bindings/usb/dwc3.txt

···
    in the array is expected to be a handle to the USB2/HS PHY and
    the second element is expected to be a handle to the USB3/SS PHY
  - phys: from the *Generic PHY* bindings
- - phy-names: from the *Generic PHY* bindings
+ - phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy"
+	or "usb3-phy".
  - snps,usb3_lpm_capable: determines if platform is USB3 LPM capable
  - snps,disable_scramble_quirk: true when SW should disable data scrambling.
 	Only really useful for FPGA builds.
···
 			disabling the suspend signal to the PHY.
  - snps,dis_rxdet_inp3_quirk: when set core will disable receiver detection
 			in PHY P3 power state.
+ - snps,dis-u2-freeclk-exists-quirk: when set, clear the u2_freeclk_exists
+			in GUSB2PHYCFG, specify that USB2 PHY doesn't provide
+			a free-running PHY clock.
+ - snps,dis-del-phy-power-chg-quirk: when set core will change PHY power
+			from P0 to P1/P2/P3 without delay.
  - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
 			utmi_l1_suspend_n, false when asserts utmi_sleep_n
  - snps,hird-threshold: HIRD threshold

Documentation/devicetree/bindings/usb/generic.txt

···
 			"peripheral" and "otg". In case this attribute isn't
 			passed via DT, USB DRD controllers should default to
 			OTG.
+ - phy_type: tells USB controllers that we want to configure the core to support
+			a UTMI+ PHY with an 8- or 16-bit interface if UTMI+ is
+			selected. Valid arguments are "utmi" and "utmi_wide".
+			In case this isn't passed via DT, USB controllers should
+			default to HW capability.
  - otg-rev: tells usb driver the release number of the OTG and EH supplement
 			with which the device and its descriptors are compliant,
 			in binary-coded decimal (i.e. 2.0 is 0200H). This
···
 	usb-phy = <&usb2_phy>, <&usb3,phy>;
 	maximum-speed = "super-speed";
 	dr_mode = "otg";
+	phy_type = "utmi_wide";
 	otg-rev = <0x0200>;
 	adp-disable;
 };

Documentation/devicetree/bindings/usb/renesas_usbhs.txt

···
 	- "renesas,usbhs-r8a7793" for r8a7793 (R-Car M2-N) compatible device
 	- "renesas,usbhs-r8a7794" for r8a7794 (R-Car E2) compatible device
 	- "renesas,usbhs-r8a7795" for r8a7795 (R-Car H3) compatible device
+	- "renesas,usbhs-r8a7796" for r8a7796 (R-Car M3-W) compatible device
 	- "renesas,rcar-gen2-usbhs" for R-Car Gen2 compatible device
 	- "renesas,rcar-gen3-usbhs" for R-Car Gen3 compatible device
 

Documentation/devicetree/bindings/usb/rockchip,dwc3.txt

···
+Rockchip SuperSpeed DWC3 USB SoC controller
+
+Required properties:
+- compatible:	should contain "rockchip,rk3399-dwc3" for rk3399 SoC
+- clocks:	A list of phandle + clock-specifier pairs for the
+		clocks listed in clock-names
+- clock-names:	Should contain the following:
+  "ref_clk"	Controller reference clk, have to be 24 MHz
+  "suspend_clk"	Controller suspend clk, have to be 24 MHz or 32 KHz
+  "bus_clk"	Master/Core clock, have to be >= 62.5 MHz for SS
+		operation and >= 30MHz for HS operation
+  "grf_clk"	Controller grf clk
+
+Required child node:
+A child node must exist to represent the core DWC3 IP block. The name of
+the node is not important. The content of the node is defined in dwc3.txt.
+
+Phy documentation is provided in the following places:
+Documentation/devicetree/bindings/phy/rockchip,dwc3-usb-phy.txt
+
+Example device nodes:
+
+	usbdrd3_0: usb@fe800000 {
+		compatible = "rockchip,rk3399-dwc3";
+		clocks = <&cru SCLK_USB3OTG0_REF>, <&cru SCLK_USB3OTG0_SUSPEND>,
+			 <&cru ACLK_USB3OTG0>, <&cru ACLK_USB3_GRF>;
+		clock-names = "ref_clk", "suspend_clk",
+			      "bus_clk", "grf_clk";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		status = "disabled";
+		usbdrd_dwc3_0: dwc3@fe800000 {
+			compatible = "snps,dwc3";
+			reg = <0x0 0xfe800000 0x0 0x100000>;
+			interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
+			dr_mode = "otg";
+			status = "disabled";
+		};
+	};
+
+	usbdrd3_1: usb@fe900000 {
+		compatible = "rockchip,rk3399-dwc3";
+		clocks = <&cru SCLK_USB3OTG1_REF>, <&cru SCLK_USB3OTG1_SUSPEND>,
+			 <&cru ACLK_USB3OTG1>, <&cru ACLK_USB3_GRF>;
+		clock-names = "ref_clk", "suspend_clk",
+			      "bus_clk", "grf_clk";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		status = "disabled";
+		usbdrd_dwc3_1: dwc3@fe900000 {
+			compatible = "snps,dwc3";
+			reg = <0x0 0xfe900000 0x0 0x100000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			dr_mode = "otg";
+			status = "disabled";
+		};
+	};

Documentation/devicetree/bindings/usb/usb4604.txt

···
+SMSC USB4604 High-Speed Hub Controller
+
+Required properties:
+- compatible: Should be "smsc,usb4604"
+
+Optional properties:
+- reg: Specifies the i2c slave address, it is required and should be 0x2d
+       if I2C is used.
+- reset-gpios: Should specify GPIO for reset.
+- initial-mode: Should specify initial mode.
+                (1 for HUB mode, 2 for STANDBY mode)
+
+Examples:
+	usb-hub@2d {
+		compatible = "smsc,usb4604";
+		reg = <0x2d>;
+		reset-gpios = <&gpx3 5 1>;
+		initial-mode = <1>;
+	};

Documentation/devicetree/bindings/usb/usbmisc-imx.txt

···
 	"fsl,imx6q-usbmisc" for imx6q
 	"fsl,vf610-usbmisc" for Vybrid vf610
 	"fsl,imx6sx-usbmisc" for imx6sx
+	"fsl,imx7d-usbmisc" for imx7d
 - reg: Should contain registers location and length
 
 Examples:

Documentation/kernel-parameters.txt

···
 				u = IGNORE_UAS (don't bind to the uas driver);
 				w = NO_WP_DETECT (don't test whether the
 					medium is write-protected).
+				y = ALWAYS_SYNC (issue a SYNCHRONIZE_CACHE
+					even if the device claims no cache)
 			Example: quirks=0419:aaf5:rl,0421:0433:rc
 
 	user_debug=	[KNL,ARM]

Documentation/leds/ledtrig-usbport.txt

···
+USB port LED trigger
+====================
+
+This LED trigger can be used for signalling to the user a presence of USB device
+in a given port. It simply turns on LED when device appears and turns it off
+when it disappears.
+
+It requires selecting USB ports that should be observed. All available ones are
+listed as separated entries in a "ports" subdirectory. Selecting is handled by
+echoing "1" to a chosen port.
+
+Please note that this trigger allows selecting multiple USB ports for a single
+LED. This can be useful in two cases:
+
+1) Device with single USB LED and few physical ports
+
+In such a case LED will be turned on as long as there is at least one connected
+USB device.
+
+2) Device with a physical port handled by few controllers
+
+Some devices may have one controller per PHY standard. E.g. USB 3.0 physical
+port may be handled by ohci-platform, ehci-platform and xhci-hcd. If there is
+only one LED user will most likely want to assign ports from all 3 hubs.
+
+
+This trigger can be activated from user space on led class devices as shown
+below:
+
+  echo usbport > trigger
+
+This adds sysfs attributes to the LED that are documented in:
+Documentation/ABI/testing/sysfs-class-led-trigger-usbport
+
+Example use-case:
+
+  echo usbport > trigger
+  echo 1 > ports/usb1-port1
+  echo 1 > ports/usb2-port1
+  cat ports/usb1-port1
+  echo 0 > ports/usb1-port1

MAINTAINERS

···
 F:	drivers/net/usb/lan78xx.*
 
 USB MASS STORAGE DRIVER
-M:	Matthew Dharm <[e-mail]>
+M:	Alan Stern <[e-mail]>
 L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
···
 USB SERIAL SUBSYSTEM
 M:	Johan Hovold <[e-mail]>
 L:	[e-mail]
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git
 S:	Maintained
 F:	Documentation/usb/usb-serial.txt
 F:	drivers/usb/serial/

drivers/bluetooth/bcm203x.c

···
 	data->state = BCM203X_LOAD_MINIDRV;
 
 	data->urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!data->urb) {
-		BT_ERR("Can't allocate URB");
+	if (!data->urb)
 		return -ENOMEM;
-	}
 
 	if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
 		BT_ERR("Mini driver request failed");

drivers/extcon/Kconfig

···
 	  Say Y here to enable support for USB peripheral and USB host
 	  detection by palmas usb.
 
+config EXTCON_QCOM_SPMI_MISC
+	tristate "Qualcomm USB extcon support"
+	help
+	  Say Y here to enable SPMI PMIC based USB cable detection
+	  support on Qualcomm PMICs such as PM8941.
+
 config EXTCON_RT8973A
 	tristate "Richtek RT8973A EXTCON support"
 	depends on I2C

drivers/extcon/Makefile

···
 obj-$(CONFIG_EXTCON_MAX77843)	+= extcon-max77843.o
 obj-$(CONFIG_EXTCON_MAX8997)	+= extcon-max8997.o
 obj-$(CONFIG_EXTCON_PALMAS)	+= extcon-palmas.o
+obj-$(CONFIG_EXTCON_QCOM_SPMI_MISC) += extcon-qcom-spmi-misc.o
 obj-$(CONFIG_EXTCON_RT8973A)	+= extcon-rt8973a.o
 obj-$(CONFIG_EXTCON_SM5502)	+= extcon-sm5502.o
 obj-$(CONFIG_EXTCON_USB_GPIO)	+= extcon-usb-gpio.o

drivers/extcon/extcon-adc-jack.c

···
  *
  * Analog Jack extcon driver with ADC-based detection capability.
  *
+ * Copyright (C) 2016 Samsung Electronics
+ * Chanwoo Choi <[e-mail]>
+ *
  * Copyright (C) 2012 Samsung Electronics
  * MyungJoo Ham <[e-mail]>
  *
···
 	struct adc_jack_data *data = container_of(to_delayed_work(work),
 			struct adc_jack_data,
 			handler);
-	u32 state = 0;
+	struct adc_jack_cond *def;
 	int ret, adc_val;
 	int i;
 
···
 
 	/* Get state from adc value with adc_conditions */
 	for (i = 0; i < data->num_conditions; i++) {
-		struct adc_jack_cond *def = &data->adc_conditions[i];
-		if (!def->state)
-			break;
+		def = &data->adc_conditions[i];
 		if (def->min_adc <= adc_val && def->max_adc >= adc_val) {
-			state = def->state;
-			break;
+			extcon_set_state_sync(data->edev, def->id, true);
+			return;
 		}
 	}
-	/* if no def has met, it means state = 0 (no cables attached) */
 
-	extcon_set_state(data->edev, state);
+	/* Set the detached state if adc value is not included in the range */
+	for (i = 0; i < data->num_conditions; i++) {
+		def = &data->adc_conditions[i];
+		extcon_set_state_sync(data->edev, def->id, false);
+	}
 }
 
 static irqreturn_t adc_jack_irq_thread(int irq, void *_data)
···
 		return -ENOMEM;
 	}
 
-	if (!pdata->adc_conditions ||
-			!pdata->adc_conditions[0].state) {
+	if (!pdata->adc_conditions) {
 		dev_err(&pdev->dev, "error: adc_conditions not defined.\n");
 		return -EINVAL;
 	}
 	data->adc_conditions = pdata->adc_conditions;
 
 	/* Check the length of array and set num_conditions */
-	for (i = 0; data->adc_conditions[i].state; i++)
-		;
+	for (i = 0; data->adc_conditions[i].id != EXTCON_NONE; i++);
 	data->num_conditions = i;
 
 	data->chan = iio_channel_get(&pdev->dev, pdata->consumer_channel);
···
 	if (data->wakeup_source)
 		device_init_wakeup(&pdev->dev, 1);
 
+	adc_jack_handler(&data->handler.work);
 	return 0;
 }
 

drivers/extcon/extcon-arizona.c

···
 		if (clamp)
 			val = ARIZONA_RMV_SHRT_HP1L;
 		break;
-	};
+	}
 
 	snd_soc_dapm_mutex_lock(arizona->dapm);
 
···
 	}
 
 	/* If the cable was removed while measuring ignore the result */
-	ret = extcon_get_cable_state_(info->edev, EXTCON_MECHANICAL);
+	ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
 	if (ret < 0) {
 		dev_err(arizona->dev, "Failed to check cable state: %d\n",
 			ret);
···
 	else
 		report = EXTCON_JACK_HEADPHONE;
 
-	ret = extcon_set_cable_state_(info->edev, report, true);
+	ret = extcon_set_state_sync(info->edev, report, true);
 	if (ret != 0)
 		dev_err(arizona->dev, "Failed to report HP/line: %d\n",
 			ret);
···
 			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
 
 	/* Just report headphone */
-	ret = extcon_set_cable_state_(info->edev, EXTCON_JACK_HEADPHONE, true);
+	ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
 	if (ret != 0)
 		dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
 
···
 			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
 
 	/* Just report headphone */
-	ret = extcon_set_cable_state_(info->edev, EXTCON_JACK_HEADPHONE, true);
+	ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
 	if (ret != 0)
 		dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
 
···
 	mutex_lock(&info->lock);
 
 	/* If the cable was removed while measuring ignore the result */
-	ret = extcon_get_cable_state_(info->edev, EXTCON_MECHANICAL);
+	ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
 	if (ret < 0) {
 		dev_err(arizona->dev, "Failed to check cable state: %d\n",
 				ret);
···
 
 		arizona_identify_headphone(info);
 
-		ret = extcon_set_cable_state_(info->edev,
+		ret = extcon_set_state_sync(info->edev,
 					      EXTCON_JACK_MICROPHONE, true);
 		if (ret != 0)
 			dev_err(arizona->dev, "Headset report failed: %d\n",
···
 
 	if (info->last_jackdet == present) {
 		dev_dbg(arizona->dev, "Detected jack\n");
-		ret = extcon_set_cable_state_(info->edev,
+		ret = extcon_set_state_sync(info->edev,
 					      EXTCON_MECHANICAL, true);
 
 		if (ret != 0)
···
 					 info->micd_ranges[i].key, 0);
 		input_sync(info->input);
 
-		ret = extcon_update_state(info->edev, 0xffffffff, 0);
-		if (ret != 0)
-			dev_err(arizona->dev, "Removal report failed: %d\n",
-				ret);
+		for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
+			ret = extcon_set_state_sync(info->edev,
+					arizona_cable[i], false);
+			if (ret != 0)
+				dev_err(arizona->dev,
+					"Removal report failed: %d\n", ret);
+		}
 
 		regmap_update_bits(arizona->regmap,
 				   ARIZONA_JACK_DETECT_DEBOUNCE,

drivers/extcon/extcon-axp288.c

···
 
 	switch (chrg_type) {
 	case DET_STAT_SDP:
-		dev_dbg(info->dev, "sdp cable is connecetd\n");
+		dev_dbg(info->dev, "sdp cable is connected\n");
 		notify_otg = true;
 		notify_charger = true;
 		cable = EXTCON_CHG_USB_SDP;
 		break;
 	case DET_STAT_CDP:
-		dev_dbg(info->dev, "cdp cable is connecetd\n");
+		dev_dbg(info->dev, "cdp cable is connected\n");
 		notify_otg = true;
 		notify_charger = true;
 		cable = EXTCON_CHG_USB_CDP;
 		break;
 	case DET_STAT_DCP:
-		dev_dbg(info->dev, "dcp cable is connecetd\n");
+		dev_dbg(info->dev, "dcp cable is connected\n");
 		notify_charger = true;
 		cable = EXTCON_CHG_USB_DCP;
 		break;
···
 	}
 
 	if (notify_charger)
-		extcon_set_cable_state_(info->edev, cable, vbus_attach);
+		extcon_set_state_sync(info->edev, cable, vbus_attach);
 
 	/* Clear the flags on disconnect event */
 	if (!vbus_attach)

drivers/extcon/extcon-gpio.c

···
 	state = gpiod_get_value_cansleep(data->id_gpiod);
 	if (data->pdata->gpio_active_low)
 		state = !state;
-	extcon_set_state(data->edev, state);
+
+	extcon_set_state_sync(data->edev, data->pdata->extcon_id, state);
 }
 
 static irqreturn_t gpio_irq_handler(int irq, void *dev_id)

drivers/extcon/extcon-max14577.c

···
  *
  * Copyright (C) 2013,2014 Samsung Electronics
  * Chanwoo Choi <[e-mail]>
- * Krzysztof Kozlowski <[e-mail]>
+ * Krzysztof Kozlowski <[e-mail]>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
···
 	if (ret < 0)
 		return ret;
 
-	extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
+	extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
 
 	return 0;
 }
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+		extcon_set_state_sync(info->edev, EXTCON_USB, attached);
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 					attached);
 		break;
 	case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 					attached);
 		break;
 	case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
 					attached);
 		break;
 	case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
 					attached);
 		break;
 	case MAX14577_CHARGER_TYPE_SPECIAL_1A:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
 					attached);
 		break;
 	case MAX14577_CHARGER_TYPE_NONE:
···
 module_platform_driver(max14577_muic_driver);
 
 MODULE_DESCRIPTION("Maxim 14577/77836 Extcon driver");
-MODULE_AUTHOR("Chanwoo Choi <[e-mail]>, Krzysztof Kozlowski <[e-mail]>");
+MODULE_AUTHOR("Chanwoo Choi <[e-mail]>, Krzysztof Kozlowski <[e-mail]>");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:extcon-max14577");

drivers/extcon/extcon-max3355.c

···
 		 * As we don't have event for USB peripheral cable attached,
 		 * we simulate USB peripheral attach here.
 		 */
-		extcon_set_cable_state_(data->edev, EXTCON_USB_HOST, false);
-		extcon_set_cable_state_(data->edev, EXTCON_USB, true);
+		extcon_set_state_sync(data->edev, EXTCON_USB_HOST, false);
+		extcon_set_state_sync(data->edev, EXTCON_USB, true);
 	} else {
 		/*
 		 * ID = 0 means USB HOST cable attached.
 		 * As we don't have event for USB peripheral cable detached,
 		 * we simulate USB peripheral detach here.
 		 */
-		extcon_set_cable_state_(data->edev, EXTCON_USB, false);
-		extcon_set_cable_state_(data->edev, EXTCON_USB_HOST, true);
+		extcon_set_state_sync(data->edev, EXTCON_USB, false);
+		extcon_set_state_sync(data->edev, EXTCON_USB_HOST, true);
 	}
 
 	return IRQ_HANDLED;

drivers/extcon/extcon-max77693.c

···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
-		extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
+		extcon_set_state_sync(info->edev, EXTCON_DOCK, attached);
+		extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
 		goto out;
 	case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE:	/* Dock-Desk */
 		dock_id = EXTCON_DOCK;
···
 	case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD:		/* Dock-Audio */
 		dock_id = EXTCON_DOCK;
 		if (!attached) {
-			extcon_set_cable_state_(info->edev, EXTCON_USB, false);
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+			extcon_set_state_sync(info->edev, EXTCON_USB, false);
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 						false);
 		}
 		break;
···
 					attached);
 	if (ret < 0)
 		return ret;
-	extcon_set_cable_state_(info->edev, dock_id, attached);
+	extcon_set_state_sync(info->edev, dock_id, attached);
 
 out:
 	return 0;
···
 						attached);
 		if (ret < 0)
 			return ret;
-		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
+		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
 		break;
 	case MAX77693_MUIC_GND_AV_CABLE_LOAD:
 		/* Audio Video Cable with load, PATH:AUDIO */
···
 						attached);
 		if (ret < 0)
 			return ret;
-		extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+		extcon_set_state_sync(info->edev, EXTCON_USB, attached);
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 					attached);
 		break;
 	case MAX77693_MUIC_GND_MHL:
 	case MAX77693_MUIC_GND_MHL_VB:
 		/* MHL or MHL with USB/TA cable */
-		extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
+		extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
 		break;
 	default:
 		dev_err(info->dev, "failed to detect %s cable of gnd type\n",
···
 	if (ret < 0)
 		return ret;
 
-	extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
+	extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
 
 	return 0;
 }
···
 			 * - Support charging through micro-usb port without
 			 *   data connection
 			 */
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 						attached);
 			if (!cable_attached)
-				extcon_set_cable_state_(info->edev,
+				extcon_set_state_sync(info->edev,
 					EXTCON_DISP_MHL, cable_attached);
 			break;
 		}
···
 			 * - Support charging through micro-usb port without
 			 *   data connection.
 			 */
-			extcon_set_cable_state_(info->edev, EXTCON_USB,
+			extcon_set_state_sync(info->edev, EXTCON_USB,
 						attached);
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 						attached);
 
 			if (!cable_attached)
-				extcon_set_cable_state_(info->edev, EXTCON_DOCK,
+				extcon_set_state_sync(info->edev, EXTCON_DOCK,
 							cable_attached);
 			break;
 		case MAX77693_MUIC_ADC_RESERVED_ACC_3:		/* Dock-Smart */
···
 			if (ret < 0)
 				return ret;
 
-			extcon_set_cable_state_(info->edev, EXTCON_DOCK,
+			extcon_set_state_sync(info->edev, EXTCON_DOCK,
 						attached);
-			extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL,
+			extcon_set_state_sync(info->edev, EXTCON_DISP_MHL,
 						attached);
 			break;
 		}
···
 			if (ret < 0)
 				return ret;
 
-			extcon_set_cable_state_(info->edev, EXTCON_USB,
+			extcon_set_state_sync(info->edev, EXTCON_USB,
 						attached);
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 						attached);
 			break;
 		case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
 			/* Only TA cable */
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 						attached);
 			break;
 		}
 		break;
 	case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
 					attached);
 		break;
 	case MAX77693_CHARGER_TYPE_APPLE_500MA:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
 					attached);
 		break;
 	case MAX77693_CHARGER_TYPE_APPLE_1A_2A:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
 					attached);
 		break;
 	case MAX77693_CHARGER_TYPE_DEAD_BATTERY:

drivers/extcon/extcon-max77843.c

···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
+		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
 		break;
 	case MAX77843_MUIC_GND_MHL_VB:
 	case MAX77843_MUIC_GND_MHL:
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
+		extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
 		break;
 	default:
 		dev_err(info->dev, "failed to detect %s accessory(gnd:0x%x)\n",
···
 	if (ret < 0)
 		return ret;
 
-	extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
+	extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
 
 	return 0;
 }
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+		extcon_set_state_sync(info->edev, EXTCON_USB, attached);
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 					attached);
 		break;
 	case MAX77843_MUIC_CHG_DOWNSTREAM:
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
 					attached);
 		break;
 	case MAX77843_MUIC_CHG_DEDICATED:
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 					attached);
 		break;
 	case MAX77843_MUIC_CHG_SPECIAL_500MA:
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
 					attached);
 		break;
 	case MAX77843_MUIC_CHG_SPECIAL_1A:
···
 		if (ret < 0)
 			return ret;
 
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
 					attached);
 		break;
 	case MAX77843_MUIC_CHG_GND:
···
 
 		/* Charger cable on MHL accessory is attach or detach */
 		if (gnd_type == MAX77843_MUIC_GND_MHL_VB)
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 						true);
 		else if (gnd_type == MAX77843_MUIC_GND_MHL)
-			extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+			extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 						false);
 		break;
 	case MAX77843_MUIC_CHG_NONE:

drivers/extcon/extcon-max8997.c

···
 
 	switch (usb_type) {
 	case MAX8997_USB_HOST:
-		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
+		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
 		break;
 	case MAX8997_USB_DEVICE:
-		extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+		extcon_set_state_sync(info->edev, EXTCON_USB, attached);
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 					attached);
 		break;
 	default:
···
 	switch (cable_type) {
 	case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
 	case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
-		extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
+		extcon_set_state_sync(info->edev, EXTCON_DOCK, attached);
 		break;
 	default:
 		dev_err(info->dev, "failed to detect %s dock device\n",
···
 		return ret;
 	}
 
-	extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
+	extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
 
 	return 0;
 }
···
 			return ret;
 		break;
 	case MAX8997_MUIC_ADC_MHL:
-		extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
+		extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
 		break;
 	case MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF:
 	case MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON:
···
 		}
 		break;
 	case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
 					attached);
 		break;
 	case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
 					attached);
 		break;
 	case MAX8997_CHARGER_TYPE_500MA:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
 					attached);
 		break;
 	case MAX8997_CHARGER_TYPE_1A:
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
 					attached);
 		break;
 	default:

drivers/extcon/extcon-palmas.c

···
 	if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
 		if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
 			palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
-			extcon_set_cable_state_(edev, EXTCON_USB, true);
+			extcon_set_state_sync(edev, EXTCON_USB, true);
 			dev_info(palmas_usb->dev, "USB cable is attached\n");
 		} else {
 			dev_dbg(palmas_usb->dev,
···
 	} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
 		if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
 			palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
-			extcon_set_cable_state_(edev, EXTCON_USB, false);
+			extcon_set_state_sync(edev, EXTCON_USB, false);
 			dev_info(palmas_usb->dev, "USB cable is detached\n");
 		} else {
 			dev_dbg(palmas_usb->dev,
···
 			PALMAS_USB_ID_INT_LATCH_CLR,
 			PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
 		palmas_usb->linkstat = PALMAS_USB_STATE_ID;
-		extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
+		extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
 		dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
 	} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
 				(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
···
 			PALMAS_USB_ID_INT_LATCH_CLR,
 			PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
 		palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
-		extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
+		extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
 		dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
 	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
 				(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
 		palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
-		extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
+		extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
 		dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
 	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
 				(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
 		palmas_usb->linkstat = PALMAS_USB_STATE_ID;
-		extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
+		extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
 		dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
 	}
 
···
 	id = gpiod_get_value_cansleep(palmas_usb->id_gpiod);
 
 	if (id) {
-		extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
+		extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
 		dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
 	} else {
-		extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
+		extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
 		dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
 	}
 }

drivers/extcon/extcon-qcom-spmi-misc.c

···
+/**
+ * extcon-qcom-spmi-misc.c - Qualcomm USB extcon driver to support USB ID
+ *				detection based on extcon-usb-gpio.c.
+ *
+ * Copyright (C) 2016 Linaro, Ltd.
+ * Stephen Boyd <[e-mail]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/extcon.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#define USB_ID_DEBOUNCE_MS	5	/* ms */
+
+struct qcom_usb_extcon_info {
+	struct extcon_dev *edev;
+	int irq;
+	struct delayed_work wq_detcable;
+	unsigned long debounce_jiffies;
+};
+
+static const unsigned int qcom_usb_extcon_cable[] = {
+	EXTCON_USB_HOST,
+	EXTCON_NONE,
+};
+
+static void qcom_usb_extcon_detect_cable(struct work_struct *work)
+{
+	bool id;
+	int ret;
+	struct qcom_usb_extcon_info *info = container_of(to_delayed_work(work),
+						    struct qcom_usb_extcon_info,
+						    wq_detcable);
+
+	/* check ID and update cable state */
+	ret = irq_get_irqchip_state(info->irq, IRQCHIP_STATE_LINE_LEVEL, &id);
+	if (ret)
+		return;
+
+	extcon_set_state(info->edev, EXTCON_USB_HOST, !id);
+}
+
+static irqreturn_t qcom_usb_irq_handler(int irq, void *dev_id)
+{
+	struct qcom_usb_extcon_info *info = dev_id;
+
+	queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
+			   info->debounce_jiffies);
+
+	return IRQ_HANDLED;
+}
+
+static int qcom_usb_extcon_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct qcom_usb_extcon_info *info;
+	int ret;
+
+	info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->edev = devm_extcon_dev_allocate(dev, qcom_usb_extcon_cable);
+	if (IS_ERR(info->edev)) {
+		dev_err(dev, "failed to allocate extcon device\n");
+		return -ENOMEM;
+	}
+
+	ret = devm_extcon_dev_register(dev, info->edev);
+	if (ret < 0) {
+		dev_err(dev, "failed to register extcon device\n");
+		return ret;
+	}
+
+	info->debounce_jiffies = msecs_to_jiffies(USB_ID_DEBOUNCE_MS);
+	INIT_DELAYED_WORK(&info->wq_detcable, qcom_usb_extcon_detect_cable);
+
+	info->irq = platform_get_irq_byname(pdev, "usb_id");
+	if (info->irq < 0)
+		return info->irq;
+
+	ret = devm_request_threaded_irq(dev, info->irq, NULL,
+					qcom_usb_irq_handler,
+					IRQF_TRIGGER_RISING |
+					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					pdev->name, info);
+	if (ret < 0) {
+		dev_err(dev, "failed to request handler for ID IRQ\n");
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, info);
+	device_init_wakeup(dev, 1);
+
+	/* Perform initial detection */
+	qcom_usb_extcon_detect_cable(&info->wq_detcable.work);
+
+	return 0;
+}
+
+static int qcom_usb_extcon_remove(struct platform_device *pdev)
+{
+	struct qcom_usb_extcon_info *info = platform_get_drvdata(pdev);
+
+	cancel_delayed_work_sync(&info->wq_detcable);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int qcom_usb_extcon_suspend(struct device *dev)
+{
+	struct qcom_usb_extcon_info *info = dev_get_drvdata(dev);
+	int ret = 0;
+
+	if (device_may_wakeup(dev))
+		ret = enable_irq_wake(info->irq);
+
+	return ret;
+}
+
+static int qcom_usb_extcon_resume(struct device *dev)
+{
+	struct qcom_usb_extcon_info *info = dev_get_drvdata(dev);
+	int ret = 0;
+
+	if (device_may_wakeup(dev))
+		ret = disable_irq_wake(info->irq);
+
+	return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(qcom_usb_extcon_pm_ops,
+			 qcom_usb_extcon_suspend, qcom_usb_extcon_resume);
+
+static const struct of_device_id qcom_usb_extcon_dt_match[] = {
+	{ .compatible = "qcom,pm8941-misc", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, qcom_usb_extcon_dt_match);
+
+static struct platform_driver qcom_usb_extcon_driver = {
+	.probe		= qcom_usb_extcon_probe,
+	.remove		= qcom_usb_extcon_remove,
+	.driver		= {
+		.name	= "extcon-pm8941-misc",
+		.pm	= &qcom_usb_extcon_pm_ops,
+		.of_match_table = qcom_usb_extcon_dt_match,
+	},
+};
+module_platform_driver(qcom_usb_extcon_driver);
+
+MODULE_DESCRIPTION("QCOM USB ID extcon driver");
+MODULE_AUTHOR("Stephen Boyd <[e-mail]>");
+MODULE_LICENSE("GPL v2");

drivers/extcon/extcon-rt8973a.c

···
 		return ret;
 
 	/* Change the state of external accessory */
-	extcon_set_cable_state_(info->edev, id, attached);
+	extcon_set_state_sync(info->edev, id, attached);
 	if (id == EXTCON_USB)
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 					attached);
 
 	return 0;

drivers/extcon/extcon-sm5502.c

···
 		return ret;
 
 	/* Change the state of external accessory */
-	extcon_set_cable_state_(info->edev, id, attached);
+	extcon_set_state_sync(info->edev, id, attached);
 	if (id == EXTCON_USB)
-		extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
+		extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
 					attached);
 
 	return 0;

drivers/extcon/extcon-usb-gpio.c

···
 		 * As we don't have event for USB peripheral cable attached,
 		 * we simulate USB peripheral attach here.
 		 */
-		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, false);
-		extcon_set_cable_state_(info->edev, EXTCON_USB, true);
+		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, false);
+		extcon_set_state_sync(info->edev, EXTCON_USB, true);
 	} else {
 		/*
 		 * ID = 0 means USB HOST cable attached.
 		 * As we don't have event for USB peripheral cable detached,
 		 * we simulate USB peripheral detach here.
 		 */
-		extcon_set_cable_state_(info->edev, EXTCON_USB, false);
-		extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, true);
+		extcon_set_state_sync(info->edev, EXTCON_USB, false);
+		extcon_set_state_sync(info->edev, EXTCON_USB_HOST, true);
 	}
 }
 

drivers/extcon/extcon.c

···
 #define SUPPORTED_CABLE_MAX	32
 #define CABLE_NAME_MAX		30
 
-static const char *extcon_name[] =  {
-	[EXTCON_NONE]			= "NONE",
+struct __extcon_info {
+	unsigned int type;
+	unsigned int id;
+	const char *name;
+
+} extcon_info[] = {
+	[EXTCON_NONE] = {
+		.type = EXTCON_TYPE_MISC,
+		.id = EXTCON_NONE,
+		.name = "NONE",
+	},
 
 	/* USB external connector */
-	[EXTCON_USB]			= "USB",
-	[EXTCON_USB_HOST]		= "USB-HOST",
+	[EXTCON_USB] = {
+		.type = EXTCON_TYPE_USB,
+		.id = EXTCON_USB,
+		.name = "USB",
+	},
+	[EXTCON_USB_HOST] = {
+		.type = EXTCON_TYPE_USB,
+		.id = EXTCON_USB_HOST,
+		.name = "USB_HOST",
+	},
 
 	/* Charging external connector */
-	[EXTCON_CHG_USB_SDP]		= "SDP",
-	[EXTCON_CHG_USB_DCP]		= "DCP",
-	[EXTCON_CHG_USB_CDP]		= "CDP",
-	[EXTCON_CHG_USB_ACA]		= "ACA",
-	[EXTCON_CHG_USB_FAST]		= "FAST-CHARGER",
-	[EXTCON_CHG_USB_SLOW]		= "SLOW-CHARGER",
+	[EXTCON_CHG_USB_SDP] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_SDP,
+		.name = "SDP",
+	},
+	[EXTCON_CHG_USB_DCP] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_DCP,
+		.name = "DCP",
+	},
+	[EXTCON_CHG_USB_CDP] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_CDP,
+		.name = "CDP",
+	},
+	[EXTCON_CHG_USB_ACA] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_ACA,
+		.name = "ACA",
+	},
+	[EXTCON_CHG_USB_FAST] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_FAST,
+		.name = "FAST-CHARGER",
+	},
+	[EXTCON_CHG_USB_SLOW] = {
+		.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+		.id = EXTCON_CHG_USB_SLOW,
+		.name = "SLOW-CHARGER",
+	},
+	[EXTCON_CHG_WPT] = {
+		.type = EXTCON_TYPE_CHG,
+		.id = EXTCON_CHG_WPT,
+		.name = "WPT",
+	},
 
 	/* Jack external connector */
-	[EXTCON_JACK_MICROPHONE]	= "MICROPHONE",
-	[EXTCON_JACK_HEADPHONE]		= "HEADPHONE",
-	[EXTCON_JACK_LINE_IN]		= "LINE-IN",
-	[EXTCON_JACK_LINE_OUT]		= "LINE-OUT",
-	[EXTCON_JACK_VIDEO_IN]		= "VIDEO-IN",
-	[EXTCON_JACK_VIDEO_OUT]		= "VIDEO-OUT",
-	[EXTCON_JACK_SPDIF_IN]		= "SPDIF-IN",
-	[EXTCON_JACK_SPDIF_OUT]		= "SPDIF-OUT",
+	[EXTCON_JACK_MICROPHONE] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_MICROPHONE,
+		.name = "MICROPHONE",
+	},
+	[EXTCON_JACK_HEADPHONE] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_HEADPHONE,
+		.name = "HEADPHONE",
+	},
+	[EXTCON_JACK_LINE_IN] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_LINE_IN,
+		.name = "LINE-IN",
+	},
+	[EXTCON_JACK_LINE_OUT] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_LINE_OUT,
+		.name = "LINE-OUT",
+	},
+	[EXTCON_JACK_VIDEO_IN] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_VIDEO_IN,
+		.name = "VIDEO-IN",
+	},
+	[EXTCON_JACK_VIDEO_OUT] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_VIDEO_OUT,
+		.name = "VIDEO-OUT",
+	},
+	[EXTCON_JACK_SPDIF_IN] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_SPDIF_IN,
+		.name = "SPDIF-IN",
+	},
+	[EXTCON_JACK_SPDIF_OUT] = {
+		.type = EXTCON_TYPE_JACK,
+		.id = EXTCON_JACK_SPDIF_OUT,
+		.name = "SPDIF-OUT",
+	},
 
 	/* Display external connector */
-	[EXTCON_DISP_HDMI]		= "HDMI",
-	[EXTCON_DISP_MHL]		= "MHL",
-	[EXTCON_DISP_DVI]		= "DVI",
-	[EXTCON_DISP_VGA]		= "VGA",
+	[EXTCON_DISP_HDMI] = {
+		.type = EXTCON_TYPE_DISP,
+		.id = EXTCON_DISP_HDMI,
+		.name = "HDMI",
+	},
+	[EXTCON_DISP_MHL] = {
+		.type = EXTCON_TYPE_DISP,
+		.id = EXTCON_DISP_MHL,
+		.name = "MHL",
+	},
+	[EXTCON_DISP_DVI] = {
+		.type = EXTCON_TYPE_DISP,
+		.id = EXTCON_DISP_DVI,
+		.name = "DVI",
+	},
+	[EXTCON_DISP_VGA] = {
+		.type = EXTCON_TYPE_DISP,
+		.id = EXTCON_DISP_VGA,
+		.name = "VGA",
+	},
+	[EXTCON_DISP_DP] = {
+		.type = EXTCON_TYPE_DISP | EXTCON_TYPE_USB,
+		.id = EXTCON_DISP_DP,
+		.name = "DP",
+	},
+	[EXTCON_DISP_HMD] = {
+		.type = EXTCON_TYPE_DISP | EXTCON_TYPE_USB,
+		.id = EXTCON_DISP_HMD,
+		.name = "HMD",
+	},
 
 	/* Miscellaneous external connector */
-	[EXTCON_DOCK]			= "DOCK",
-	[EXTCON_JIG]			= "JIG",
-	[EXTCON_MECHANICAL]		= "MECHANICAL",
+	[EXTCON_DOCK] = {
+		.type = EXTCON_TYPE_MISC,
+		.id = EXTCON_DOCK,
+		.name = "DOCK",
+	},
+	[EXTCON_JIG] = {
+		.type = EXTCON_TYPE_MISC,
+		.id = EXTCON_JIG,
+		.name = "JIG",
+	},
+	[EXTCON_MECHANICAL] = {
+		.type = EXTCON_TYPE_MISC,
+		.id = EXTCON_MECHANICAL,
+		.name = "MECHANICAL",
+	},
 
-	NULL,
+	{ /* sentinel */ }
 };
 
 /**
···
 	struct device_attribute attr_state;
 
 	struct attribute *attrs[3]; /* to be fed to attr_g.attrs */
+
+	union extcon_property_value usb_propval[EXTCON_PROP_USB_CNT];
+	union extcon_property_value chg_propval[EXTCON_PROP_CHG_CNT];
+	union extcon_property_value jack_propval[EXTCON_PROP_JACK_CNT];
+	union extcon_property_value disp_propval[EXTCON_PROP_DISP_CNT];
+
+	unsigned long usb_bits[BITS_TO_LONGS(EXTCON_PROP_USB_CNT)];
+	unsigned long chg_bits[BITS_TO_LONGS(EXTCON_PROP_CHG_CNT)];
+	unsigned long jack_bits[BITS_TO_LONGS(EXTCON_PROP_JACK_CNT)];
+	unsigned long disp_bits[BITS_TO_LONGS(EXTCON_PROP_DISP_CNT)];
 };
 
 static struct class *extcon_class;
···
 	return -EINVAL;
 }
 
-static bool is_extcon_changed(u32 prev, u32 new, int idx, bool *attached)
+static int get_extcon_type(unsigned int prop)
 {
-	if (((prev >> idx) & 0x1) != ((new >> idx) & 0x1)) {
-		*attached = ((new >> idx) & 0x1) ? true : false;
-		return true;
+	switch (prop) {
+	case EXTCON_PROP_USB_MIN ... EXTCON_PROP_USB_MAX:
+		return EXTCON_TYPE_USB;
+	case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
+		return EXTCON_TYPE_CHG;
+	case EXTCON_PROP_JACK_MIN ... EXTCON_PROP_JACK_MAX:
+		return EXTCON_TYPE_JACK;
+	case EXTCON_PROP_DISP_MIN ... EXTCON_PROP_DISP_MAX:
+		return EXTCON_TYPE_DISP;
+	default:
+		return -EINVAL;
+	}
+}
+
+static bool is_extcon_attached(struct extcon_dev *edev, unsigned int index)
+{
+	return !!(edev->state & BIT(index));
+}
+
+static bool is_extcon_changed(struct extcon_dev *edev, int index,
+				bool new_state)
+{
+	int state = !!(edev->state & BIT(index));
+	return (state != new_state);
+}
+
+static bool is_extcon_property_supported(unsigned int id, unsigned int prop)
+{
+	int type;
+
+	/* Check whether the property is supported or not. */
+	type = get_extcon_type(prop);
+	if (type < 0)
+		return false;
+
+	/* Check whether a specific extcon id supports the property or not. */
+	return !!(extcon_info[id].type & type);
+}
+
+static int is_extcon_property_capability(struct extcon_dev *edev,
+				unsigned int id, int index,unsigned int prop)
+{
+	struct extcon_cable *cable;
+	int type, ret;
+
+	/* Check whether the property is supported or not. */
+	type = get_extcon_type(prop);
+	if (type < 0)
+		return type;
+
+	cable = &edev->cables[index];
+
+	switch (type) {
+	case EXTCON_TYPE_USB:
+		ret = test_bit(prop - EXTCON_PROP_USB_MIN, cable->usb_bits);
+		break;
+	case EXTCON_TYPE_CHG:
+		ret = test_bit(prop - EXTCON_PROP_CHG_MIN, cable->chg_bits);
+		break;
+	case EXTCON_TYPE_JACK:
+		ret = test_bit(prop - EXTCON_PROP_JACK_MIN, cable->jack_bits);
+		break;
+	case EXTCON_TYPE_DISP:
+		ret = test_bit(prop - EXTCON_PROP_DISP_MIN, cable->disp_bits);
+		break;
+	default:
+		ret = -EINVAL;
 	}
 
-	return false;
+	return ret;
+}
+
+static void init_property(struct extcon_dev *edev, unsigned int id, int index)
+{
+	unsigned int type = extcon_info[id].type;
+	struct extcon_cable *cable = &edev->cables[index];
+
+	if (EXTCON_TYPE_USB & type)
+		memset(cable->usb_propval, 0, sizeof(cable->usb_propval));
+	if (EXTCON_TYPE_CHG & type)
+		memset(cable->chg_propval, 0, sizeof(cable->chg_propval));
+	if (EXTCON_TYPE_JACK & type)
+		memset(cable->jack_propval, 0, sizeof(cable->jack_propval));
+	if (EXTCON_TYPE_DISP & type)
+		memset(cable->disp_propval, 0, sizeof(cable->disp_propval));
 }
 
 static ssize_t state_show(struct device *dev, struct device_attribute *attr,
···
 
 	for (i = 0; i < edev->max_supported; i++) {
 		count += sprintf(buf + count, "%s=%d\n",
-				extcon_name[edev->supported_cable[i]],
+				extcon_info[edev->supported_cable[i]].name,
 				 !!(edev->state & (1 << i)));
 	}
 
 	return count;
 }
-
-static ssize_t state_store(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	u32 state;
-	ssize_t ret = 0;
-	struct extcon_dev *edev = dev_get_drvdata(dev);
-
-	ret = sscanf(buf, "0x%x", &state);
-	if (ret == 0)
-		ret = -EINVAL;
-	else
-		ret = extcon_set_state(edev, state);
-
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-static DEVICE_ATTR_RW(state);
+static DEVICE_ATTR_RO(state);
 
 static ssize_t name_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
···
 	int i = cable->cable_index;
 
 	return sprintf(buf, "%s\n",
-			extcon_name[cable->edev->supported_cable[i]]);
+			extcon_info[cable->edev->supported_cable[i]].name);
 }
 
 static ssize_t cable_state_show(struct device *dev,
···
 	int i = cable->cable_index;
 
 	return sprintf(buf, "%d\n",
-		       extcon_get_cable_state_(cable->edev,
-					       cable->edev->supported_cable[i]));
+		extcon_get_state(cable->edev, cable->edev->supported_cable[i]));
 }
 
 /**
- * extcon_update_state() - Update the cable attach states of the extcon device
- *			   only for the masked bits.
- * @edev:	the extcon device
- * @mask:	the bit mask to designate updated bits.
- * @state:	new cable attach status for @edev
+ * extcon_sync()	- Synchronize the states for both the attached/detached
+ * @edev:		the extcon device that has the cable.
  *
- * Changing the state sends uevent with environment variable containing
- * the name of extcon device (envp[0]) and the state output (envp[1]).
- * Tizen uses this format for extcon device to get events from ports.
- * Android uses this format as well.
- *
- * Note that the notifier provides which bits are changed in the state
- * variable with the val parameter (second) to the callback.
+ * This function send a notification to synchronize the all states of a
+ * specific external connector
  */
-int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
+int extcon_sync(struct extcon_dev *edev, unsigned int id)
 {
 	char name_buf[120];
 	char state_buf[120];
···
 	int env_offset = 0;
 	int length;
 	int index;
+	int state;
 	unsigned long flags;
-	bool attached;
-
-	if (!edev)
-		return -EINVAL;
-
-	spin_lock_irqsave(&edev->lock, flags);
-
-	if (edev->state != ((edev->state & ~mask) | (state & mask))) {
-		u32 old_state;
-
-		if (check_mutually_exclusive(edev, (edev->state & ~mask) |
-						   (state & mask))) {
-			spin_unlock_irqrestore(&edev->lock, flags);
-			return -EPERM;
-		}
-
-		old_state = edev->state;
-		edev->state &= ~mask;
-		edev->state |= state & mask;
-
-		for (index = 0; index < edev->max_supported; index++) {
-			if (is_extcon_changed(old_state, edev->state, index,
-					      &attached))
-				raw_notifier_call_chain(&edev->nh[index],
-							attached, edev);
-		}
-
-		/* This could be in interrupt handler */
-		prop_buf = (char *)get_zeroed_page(GFP_ATOMIC);
-		if (prop_buf) {
-			length = name_show(&edev->dev, NULL, prop_buf);
-			if (length > 0) {
-				if (prop_buf[length - 1] == '\n')
-					prop_buf[length - 1] = 0;
-				snprintf(name_buf, sizeof(name_buf),
-					"NAME=%s", prop_buf);
-				envp[env_offset++] = name_buf;
-			}
-			length = state_show(&edev->dev, NULL, prop_buf);
-			if (length > 0) {
-				if (prop_buf[length - 1] == '\n')
-					prop_buf[length - 1] = 0;
-				snprintf(state_buf, sizeof(state_buf),
-					"STATE=%s", prop_buf);
-				envp[env_offset++] = state_buf;
-			}
-			envp[env_offset] = NULL;
-			/* Unlock early before uevent */
-			spin_unlock_irqrestore(&edev->lock, flags);
-
-			kobject_uevent_env(&edev->dev.kobj, KOBJ_CHANGE, envp);
-			free_page((unsigned long)prop_buf);
-		} else {
-			/* Unlock early before uevent */
-			spin_unlock_irqrestore(&edev->lock, flags);
-
-			dev_err(&edev->dev, "out of memory in extcon_set_state\n");
-			kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
-		}
-	} else {
-		/* No changes */
-		spin_unlock_irqrestore(&edev->lock, flags);
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(extcon_update_state);
-
-/**
- * extcon_set_state() - Set the cable attach states of the extcon device.
- * @edev:	the extcon device
- * @state:	new cable attach status for @edev
- *
- * Note that notifier provides which bits are changed in the state
- * variable with the val parameter (second) to the callback.
- */
-int extcon_set_state(struct extcon_dev *edev, u32 state)
-{
-	if (!edev)
-		return -EINVAL;
-
-	return extcon_update_state(edev, 0xffffffff, state);
-}
-EXPORT_SYMBOL_GPL(extcon_set_state);
-
-/**
- * extcon_get_cable_state_() - Get the status of a specific cable.
- * @edev:	the extcon device that has the cable.
- * @id:		the unique id of each external connector in extcon enumeration.
- */
-int extcon_get_cable_state_(struct extcon_dev *edev, const unsigned int id)
-{
-	int index;
 
 	if (!edev)
 		return -EINVAL;
···
 	if (index < 0)
 		return index;
 
-	if (edev->max_supported && edev->max_supported <= index)
-		return -EINVAL;
+	spin_lock_irqsave(&edev->lock, flags);
 
-	return !!(edev->state & (1 << index));
+	state = !!(edev->state & BIT(index));
+	raw_notifier_call_chain(&edev->nh[index], state, edev);
+
+	/* This could be in interrupt handler */
+	prop_buf = (char *)get_zeroed_page(GFP_ATOMIC);
+	if (!prop_buf) {
+		/* Unlock early before uevent */
+		spin_unlock_irqrestore(&edev->lock, flags);
+
+		dev_err(&edev->dev, "out of memory in extcon_set_state\n");
+		kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
+
+		return 0;
+	}
+
+	length = name_show(&edev->dev, NULL, prop_buf);
+	if (length > 0) {
+		if (prop_buf[length - 1] == '\n')
+			prop_buf[length - 1] = 0;
+		snprintf(name_buf, sizeof(name_buf), "NAME=%s", prop_buf);
+		envp[env_offset++] = name_buf;
+	}
+
+	length = state_show(&edev->dev, NULL, prop_buf);
+	if (length > 0) {
+		if (prop_buf[length - 1] == '\n')
+			prop_buf[length - 1] = 0;
+		snprintf(state_buf, sizeof(state_buf), "STATE=%s", prop_buf);
+		envp[env_offset++] = state_buf;
+	}
+	envp[env_offset] = NULL;
+
+	/* Unlock early before uevent */
+	spin_unlock_irqrestore(&edev->lock, flags);
+	kobject_uevent_env(&edev->dev.kobj, KOBJ_CHANGE, envp);
+	free_page((unsigned long)prop_buf);
+
+	return 0;
 }
-EXPORT_SYMBOL_GPL(extcon_get_cable_state_);
+EXPORT_SYMBOL_GPL(extcon_sync);
 
 /**
- * extcon_set_cable_state_() - Set the status of a specific cable.
+ * extcon_get_state() - Get the state of a external connector.
+ * @edev:	the extcon device that has the cable.
+ * @id:		the unique id of each external connector in extcon enumeration.
+ */
+int extcon_get_state(struct extcon_dev *edev, const unsigned int id)
+{
+	int index, state;
+	unsigned long flags;
+
+	if (!edev)
+		return -EINVAL;
+
+	index = find_cable_index_by_id(edev, id);
+	if (index < 0)
+		return index;
+
+	spin_lock_irqsave(&edev->lock, flags);
+	state = is_extcon_attached(edev, index);
+	spin_unlock_irqrestore(&edev->lock, flags);
+
+	return state;
+}
+EXPORT_SYMBOL_GPL(extcon_get_state);
+
+/**
+ * extcon_set_state() - Set the state of a external connector.
+ *			without a notification.
  * @edev:		the extcon device that has the cable.
  * @id:			the unique id of each external connector
  *			in extcon enumeration.
  * @state:		the new cable status. The default semantics is
  *			true: attached / false: detached.
+ *
+ * This function only set the state of a external connector without
+ * a notification. To synchronize the data of a external connector,
+ * use extcon_set_state_sync() and extcon_sync().
  */
-int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id,
+int extcon_set_state(struct extcon_dev *edev, unsigned int id,
 				bool cable_state)
 {
-	u32 state;
-	int index;
+	unsigned long flags;
+	int index, ret = 0;
 
 	if (!edev)
 		return -EINVAL;
···
 	if (index < 0)
 		return index;
 
-	if (edev->max_supported && edev->max_supported <= index)
+	spin_lock_irqsave(&edev->lock, flags);
+
+	/* Check whether the external connector's state is changed. */
+	if (!is_extcon_changed(edev, index, cable_state))
+		goto out;
+
+	if (check_mutually_exclusive(edev,
+		(edev->state & ~BIT(index)) | (cable_state & BIT(index)))) {
+		ret = -EPERM;
+		goto out;
+	}
+
+	/*
+	 * Initialize the value of extcon property before setting
+	 * the detached state for an external connector.
+	 */
+	if (!cable_state)
+		init_property(edev, id, index);
+
+	/* Update the state for a external connector. */
+	if (cable_state)
+		edev->state |= BIT(index);
+	else
+		edev->state &= ~(BIT(index));
+out:
+	spin_unlock_irqrestore(&edev->lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(extcon_set_state);
+
+/**
+ * extcon_set_state_sync() - Set the state of a external connector
+ *			with a notification.
+ * @edev:		the extcon device that has the cable.
+ * @id:			the unique id of each external connector
+ *			in extcon enumeration.
+ * @state:		the new cable status. The default semantics is
+ *			true: attached / false: detached.
+ *
+ * This function set the state of external connector and synchronize the data
+ * by usning a notification.
+ */
+int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
+				bool cable_state)
+{
+	int ret, index;
+	unsigned long flags;
+
+	index = find_cable_index_by_id(edev, id);
+	if (index < 0)
+		return index;
+
+	/* Check whether the external connector's state is changed. */
+	spin_lock_irqsave(&edev->lock, flags);
+	ret = is_extcon_changed(edev, index, cable_state);
+	spin_unlock_irqrestore(&edev->lock, flags);
+	if (!ret)
+		return 0;
+
+	ret = extcon_set_state(edev, id, cable_state);
+	if (ret < 0)
+		return ret;
+
+	return extcon_sync(edev, id);
+}
+EXPORT_SYMBOL_GPL(extcon_set_state_sync);
+
+/**
+ * extcon_get_property() - Get the property value of a specific cable.
+ * @edev:		the extcon device that has the cable.
+ * @id:			the unique id of each external connector
+ *			in extcon enumeration.
+ * @prop:		the property id among enum extcon_property.
+ * @prop_val:		the pointer which store the value of property.
+ *
+ * When getting the property value of external connector, the external connector
+ * should be attached. If detached state, function just return 0 without
+ * property value. Also, the each property should be included in the list of
+ * supported properties according to the type of external connectors.
+ *
+ * Returns 0 if success or error number if fail
+ */
+int extcon_get_property(struct extcon_dev *edev, unsigned int id,
+				unsigned int prop,
+				union extcon_property_value *prop_val)
+{
+	struct extcon_cable *cable;
+	unsigned long flags;
+	int index, ret = 0;
+
+	*prop_val = (union extcon_property_value)(0);
+
+	if (!edev)
 		return -EINVAL;
 
-	state = cable_state ? (1 << index) : 0;
-	return extcon_update_state(edev, 1 << index, state);
+	/* Check whether the property is supported or not */
+	if (!is_extcon_property_supported(id, prop))
+		return -EINVAL;
+
+	/* Find the cable index of external connector by using id */
+	index = find_cable_index_by_id(edev, id);
+	if (index < 0)
+		return index;
+
+	spin_lock_irqsave(&edev->lock, flags);
+
+	/* Check whether the property is available or not. */
+	if (!is_extcon_property_capability(edev, id, index, prop)) {
+		spin_unlock_irqrestore(&edev->lock, flags);
+		return -EPERM;
+	}
+
+	/*
+	 * Check whether the external connector is attached.
+	 * If external connector is detached, the user can not
+	 * get the property value.
+	 */
+	if (!is_extcon_attached(edev, index)) {
+		spin_unlock_irqrestore(&edev->lock, flags);
+		return 0;
+	}
+
+	cable = &edev->cables[index];
+
+	/* Get the property value according to extcon type */
+	switch (prop) {
+	case EXTCON_PROP_USB_MIN ... EXTCON_PROP_USB_MAX:
+		*prop_val = cable->usb_propval[prop - EXTCON_PROP_USB_MIN];
+		break;
+	case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
+		*prop_val = cable->chg_propval[prop - EXTCON_PROP_CHG_MIN];
+		break;
+	case EXTCON_PROP_JACK_MIN ... EXTCON_PROP_JACK_MAX:
+		*prop_val = cable->jack_propval[prop - EXTCON_PROP_JACK_MIN];
+		break;
+	case EXTCON_PROP_DISP_MIN ... EXTCON_PROP_DISP_MAX:
+		*prop_val = cable->disp_propval[prop - EXTCON_PROP_DISP_MIN];
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	spin_unlock_irqrestore(&edev->lock, flags);
+
+	return ret;
 }
-EXPORT_SYMBOL_GPL(extcon_set_cable_state_);
+EXPORT_SYMBOL_GPL(extcon_get_property);
+
+/**
+ * extcon_set_property() - Set the property value of a specific cable.
+ * @edev:		the extcon device that has the cable.
+ * @id:			the unique id of each external connector
+ *			in extcon enumeration.
+ * @prop:		the property id among enum extcon_property.
+ * @prop_val:		the pointer including the new value of property.
+ *
+ * The each property should be included in the list of supported properties
+ * according to the type of external connectors.
+ *
+ * Returns 0 if success or error number if fail
+ */
+int extcon_set_property(struct extcon_dev *edev, unsigned int id,
+				unsigned int prop,
+				union extcon_property_value prop_val)
+{
+	struct extcon_cable *cable;
+	unsigned long flags;
+	int index, ret = 0;
+
+	if (!edev)
+		return -EINVAL;
+
+	/* Check whether the property is supported or not */
+	if (!is_extcon_property_supported(id, prop))
+		return -EINVAL;
+
+	/* Find the cable index of external connector by using id */
+	index = find_cable_index_by_id(edev, id);
+	if (index < 0)
+		return index;
+
+	spin_lock_irqsave(&edev->lock, flags);
+
+	/* Check whether the property is available or not. */
+	if (!is_extcon_property_capability(edev, id, index, prop)) {
+		spin_unlock_irqrestore(&edev->lock, flags);
+		return -EPERM;
+	}
+
+	cable = &edev->cables[index];
+
+	/* Set the property value according to extcon type */
+	switch (prop) {
+	case EXTCON_PROP_USB_MIN ... EXTCON_PROP_USB_MAX:
+		cable->usb_propval[prop - EXTCON_PROP_USB_MIN] = prop_val;
+		break;
+	case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
+		cable->chg_propval[prop - EXTCON_PROP_CHG_MIN] = prop_val;
+		break;
+	case EXTCON_PROP_JACK_MIN ... EXTCON_PROP_JACK_MAX:
+		cable->jack_propval[prop - EXTCON_PROP_JACK_MIN] = prop_val;
+		break;
+	case EXTCON_PROP_DISP_MIN ... EXTCON_PROP_DISP_MAX:
+		cable->disp_propval[prop - EXTCON_PROP_DISP_MIN] = prop_val;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	spin_unlock_irqrestore(&edev->lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(extcon_set_property);
+
+/**
+ * extcon_set_property_sync() - Set the property value of a specific cable
+			with a notification.
+ * @prop_val:		the pointer including the new value of property.
+ *
+ * When setting the property value of external connector, the external connector
+ * should be attached. The each property should be included in the list of
+ * supported properties according to the type of external connectors.
+ *
+ * Returns 0 if success or error number if fail
+ */
+int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
+				unsigned int prop,
+				union extcon_property_value prop_val)
+{
+	int ret;
+
+	ret = extcon_set_property(edev, id, prop, prop_val);
+	if (ret < 0)
+		return ret;
+
+	return extcon_sync(edev, id);
+}
+EXPORT_SYMBOL_GPL(extcon_set_property_sync);
+
+/**
+ * extcon_get_property_capability() - Get the capability of property
+ *			of an external connector.
+ * @edev:		the extcon device that has the cable.
+ * @id:			the unique id of each external connector
+ *			in extcon enumeration.
+ * @prop:		the property id among enum extcon_property.
+ *
+ * Returns 1 if the property is available or 0 if not available.
+ */
+int extcon_get_property_capability(struct extcon_dev *edev, unsigned int id,
+					unsigned int prop)
+{
+	int index;
+
+	if (!edev)
+		return -EINVAL;
+
+	/* Check whether the property is supported or not */
+	if (!is_extcon_property_supported(id, prop))
+		return -EINVAL;
+
+	/* Find the cable index of external connector by using id */
+	index = find_cable_index_by_id(edev, id);
+	if (index < 0)
+		return index;
+
+	return is_extcon_property_capability(edev, id, index, prop);
+}
+EXPORT_SYMBOL_GPL(extcon_get_property_capability);
+
+/**
+ * extcon_set_property_capability() - Set the capability of a property
+ *			of an external connector.
+ * @edev:		the extcon device that has the cable.
+ * @id:			the unique id of each external connector
+ *			in extcon enumeration.
+ * @prop:		the property id among enum extcon_property.
+ *
+ * This function set the capability of a property for an external connector
+ * to mark the bit in capability bitmap which mean the available state of
+ * a property.
+ *
+ * Returns 0 if success or error number if fail
+ */
+int extcon_set_property_capability(struct extcon_dev *edev, unsigned int id,
+					unsigned int prop)
+{
+	struct extcon_cable *cable;
+	int index, type, ret = 0;
+
+	if (!edev)
+		return -EINVAL;
+
+	/* Check whether the property is supported or not. */
+	if (!is_extcon_property_supported(id, prop))
+		return -EINVAL;
+
+	/* Find the cable index of external connector by using id. */
+	index = find_cable_index_by_id(edev, id);
+	if (index < 0)
+		return index;
+
+	type = get_extcon_type(prop);
+	if (type < 0)
+		return type;
+
+	cable = &edev->cables[index];
+
+	switch (type) {
+	case EXTCON_TYPE_USB:
+		__set_bit(prop - EXTCON_PROP_USB_MIN, cable->usb_bits);
+		break;
+	case EXTCON_TYPE_CHG:
+		__set_bit(prop - EXTCON_PROP_CHG_MIN, cable->chg_bits);
+		break;
+	case EXTCON_TYPE_JACK:
+		__set_bit(prop - EXTCON_PROP_JACK_MIN, cable->jack_bits);
+		break;
+	case EXTCON_TYPE_DISP:
+		__set_bit(prop - EXTCON_PROP_DISP_MIN, cable->disp_bits);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(extcon_set_property_capability);
 
 /**
  * extcon_get_extcon_dev() - Get the extcon device instance from the name
···
 			     struct notifier_block *nb)
 {
 	unsigned long flags;
-	int ret, idx;
+	int ret, idx = -EINVAL;
 
 	if (!nb)
 		return -EINVAL;
···
 		return ERR_PTR(-EINVAL);
 
 	if (!dev->of_node) {
-		dev_err(dev, "device does not have a device node entry\n");
+		dev_dbg(dev, "device does not have a device node entry\n");
 		return ERR_PTR(-EINVAL);
 	}
 
 	node = of_parse_phandle(dev->of_node, "extcon", index);
 	if (!node) {
-		dev_err(dev, "failed to get phandle in %s node\n",
+		dev_dbg(dev, "failed to get phandle in %s node\n",
 			dev->of_node->full_name);
 		return ERR_PTR(-ENODEV);
 	}

drivers/media/dvb-frontends/rtl2832_sdr.c

···
 		dev_dbg(&pdev->dev, "alloc urb=%d\n", i);
 		dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
 		if (!dev->urb_list[i]) {
-			dev_dbg(&pdev->dev, "failed\n");
 			for (j = 0; j < i; j++)
 				usb_free_urb(dev->urb_list[j]);
 			return -ENOMEM;

drivers/media/radio/si470x/radio-si470x-usb.c

···
 
 	radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!radio->int_in_urb) {
-		dev_info(&intf->dev, "could not allocate int_in_urb");
 		retval = -ENOMEM;
 		goto err_intbuffer;
 	}

drivers/media/rc/imon.c

···
 		goto exit;
 	}
 	rx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!rx_urb) {
-		dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
+	if (!rx_urb)
 		goto rx_urb_alloc_failed;
-	}
 	tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!tx_urb) {
-		dev_err(dev, "%s: usb_alloc_urb failed for display urb",
-			__func__);
+	if (!tx_urb)
 		goto tx_urb_alloc_failed;
-	}
 
 	mutex_init(&ictx->lock);
 	spin_lock_init(&ictx->kc_lock);
···
 	int ret = -ENOMEM;
 
 	rx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!rx_urb) {
-		pr_err("usb_alloc_urb failed for IR urb\n");
+	if (!rx_urb)
 		goto rx_urb_alloc_failed;
-	}
 
 	mutex_lock(&ictx->lock);
 

drivers/media/rc/redrat3.c

···
 
 	/* set up bulk-in endpoint */
 	rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!rr3->read_urb) {
-		dev_err(dev, "Read urb allocation failure\n");
+	if (!rr3->read_urb)
 		goto error;
-	}
 
 	rr3->ep_in = ep_in;
 	rr3->bulk_in_buf = usb_alloc_coherent(udev,

drivers/media/usb/airspy/airspy.c

···
 		dev_dbg(s->dev, "alloc urb=%d\n", i);
 		s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
 		if (!s->urb_list[i]) {
-			dev_dbg(s->dev, "failed\n");
 			for (j = 0; j < i; j++)
 				usb_free_urb(s->urb_list[j]);
 			return -ENOMEM;

drivers/media/usb/as102/as102_usb_drv.c

···
 
 		urb = usb_alloc_urb(0, GFP_ATOMIC);
 		if (urb == NULL) {
-			dev_dbg(&dev->bus_adap.usb_dev->dev,
-				"%s: usb_alloc_urb failed\n", __func__);
 			as102_free_usb_stream_buffer(dev);
 			return -ENOMEM;
 		}

drivers/media/usb/au0828/au0828-video.c

···
 	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 		if (!urb) {
-			au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
 			au0828_uninit_isoc(dev);
 			return -ENOMEM;
 		}

drivers/media/usb/cpia2/cpia2_usb.c

···
 		}
 		urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
 		if (!urb) {
-			ERR("%s: usb_alloc_urb error!\n", __func__);
 			for (j = 0; j < i; j++)
 				usb_free_urb(cam->sbuf[j].urb);
 			return -ENOMEM;

drivers/media/usb/cx231xx/cx231xx-audio.c

···
 		memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
 		urb = usb_alloc_urb(CX231XX_ISO_NUM_AUDIO_PACKETS, GFP_ATOMIC);
 		if (!urb) {
-			dev_err(dev->dev, "usb_alloc_urb failed!\n");
 			for (j = 0; j < i; j++) {
 				usb_free_urb(dev->adev.urb[j]);
 				kfree(dev->adev.transfer_buffer[j]);
···
 		memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
 		urb = usb_alloc_urb(CX231XX_NUM_AUDIO_PACKETS, GFP_ATOMIC);
 		if (!urb) {
-			dev_err(dev->dev, "usb_alloc_urb failed!\n");
 			for (j = 0; j < i; j++) {
 				usb_free_urb(dev->adev.urb[j]);
 				kfree(dev->adev.transfer_buffer[j]);

drivers/media/usb/cx231xx/cx231xx-core.c

···
 	for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 		if (!urb) {
-			dev_err(dev->dev,
-				"cannot alloc isoc_ctl.urb %i\n", i);
 			cx231xx_uninit_isoc(dev);
 			return -ENOMEM;
 		}
···
 	for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			dev_err(dev->dev,
-				"cannot alloc bulk_ctl.urb %i\n", i);
 			cx231xx_uninit_bulk(dev);
 			return -ENOMEM;
 		}

drivers/media/usb/cx231xx/cx231xx-vbi.c

···
 
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
-			dev_err(dev->dev,
-				"cannot alloc bulk_ctl.urb %i\n", i);
 			cx231xx_uninit_vbi_isoc(dev);
 			return -ENOMEM;
 		}

drivers/media/usb/dvb-usb/dib0700_core.c

···
 	/* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
 
 	purb = usb_alloc_urb(0, GFP_KERNEL);
-	if (purb == NULL) {
-		err("rc usb alloc urb failed");
+	if (purb == NULL)
 		return -ENOMEM;
-	}
 
 	purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
 	if (purb->transfer_buffer == NULL) {

drivers/media/usb/em28xx/em28xx-audio.c

···
 
 		urb = usb_alloc_urb(npackets, GFP_ATOMIC);
 		if (!urb) {
-			em28xx_errdev("usb_alloc_urb failed!\n");
 			em28xx_audio_free_urb(dev);
 			return -ENOMEM;
 		}

drivers/media/usb/em28xx/em28xx-core.c

···
 	for (i = 0; i < usb_bufs->num_bufs; i++) {
 		urb = usb_alloc_urb(usb_bufs->num_packets, GFP_KERNEL);
 		if (!urb) {
-			em28xx_err("cannot alloc usb_ctl.urb %i\n", i);
 			em28xx_uninit_usb_xfer(dev, mode);
 			return -ENOMEM;
 		}

drivers/media/usb/gspca/benq.c

···
 #define SD_NPKT 32
 	for (n = 0; n < 4; n++) {
 		urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
-		if (!urb) {
-			pr_err("usb_alloc_urb failed\n");
+		if (!urb)
 			return -ENOMEM;
-		}
 		gspca_dev->urb[n] = urb;
 		urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
 						SD_PKT_SZ * SD_NPKT,

drivers/media/usb/gspca/gspca.c

···
 
 	for (n = 0; n < nurbs; n++) {
 		urb = usb_alloc_urb(npkt, GFP_KERNEL);
-		if (!urb) {
-			pr_err("usb_alloc_urb failed\n");
+		if (!urb)
 			return -ENOMEM;
-		}
 		gspca_dev->urb[n] = urb;
 		urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
 						bsize,

drivers/media/usb/gspca/konica.c

···
 		packet_size =
 			le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize);
 		urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
-		if (!urb) {
-			pr_err("usb_alloc_urb failed\n");
+		if (!urb)
 			return -ENOMEM;
-		}
 		gspca_dev->urb[n] = urb;
 		urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
 						packet_size * SD_NPKT,

drivers/media/usb/hackrf/hackrf.c

···
 		dev_dbg(dev->dev, "alloc urb=%d\n", i);
 		dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
 		if (!dev->urb_list[i]) {
-			dev_dbg(dev->dev, "failed\n");
 			for (j = 0; j < i; j++)
 				usb_free_urb(dev->urb_list[j]);
 			return -ENOMEM;

drivers/media/usb/hdpvr/hdpvr-video.c

···
 		buf->dev = dev;
 
 		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!urb) {
-			v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
+		if (!urb)
 			goto exit_urb;
-		}
 		buf->urb = urb;
 
 		mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,

drivers/media/usb/msi2500/msi2500.c

···
 	for (i = 0; i < MAX_ISO_BUFS; i++) {
 		urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
 		if (urb == NULL) {
-			dev_err(dev->dev, "Failed to allocate urb %d\n", i);
 			msi2500_isoc_cleanup(dev);
 			return -ENOMEM;
 		}

drivers/media/usb/pwc/pwc-if.c

···
 	for (i = 0; i < MAX_ISO_BUFS; i++) {
 		urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
 		if (urb == NULL) {
-			PWC_ERROR("Failed to allocate urb %d\n", i);
 			pwc_isoc_cleanup(pdev);
 			return -ENOMEM;
 		}

drivers/media/usb/s2255/s2255drv.c

···
 	pipe_info->state = 1;
 	pipe_info->err_count = 0;
 	pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!pipe_info->stream_urb) {
-		dev_err(&dev->udev->dev,
-			"ReadStream: Unable to alloc URB\n");
+	if (!pipe_info->stream_urb)
 		return -ENOMEM;
-	}
 	/* transfer buffer allocated in board_init */
 	usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
 			  pipe,
···
 	}
 
 	dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->fw_data->fw_urb) {
-		dev_err(&interface->dev, "out of memory!\n");
+	if (!dev->fw_data->fw_urb)
 		goto errorFWURB;
-	}
 
 	dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL);
 	if (!dev->fw_data->pfw_data) {

drivers/media/usb/stk1160/stk1160-video.c

···
 	for (i = 0; i < num_bufs; i++) {
 
 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
-		if (!urb) {
-			stk1160_err("cannot alloc urb[%d]\n", i);
+		if (!urb)
 			goto free_i_bufs;
-		}
 		dev->isoc_ctl.urb[i] = urb;
 
 #ifndef CONFIG_DMA_NONCOHERENT

drivers/media/usb/stkwebcam/stk-webcam.c

···
 			STK_ERROR("isobuf data already allocated\n");
 		if (dev->isobufs[i].urb == NULL) {
 			urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
-			if (urb == NULL) {
-				STK_ERROR("Failed to allocate URB %d\n", i);
+			if (urb == NULL)
 				goto isobufs_out;
-			}
 			dev->isobufs[i].urb = urb;
 		} else {
 			STK_ERROR("Killing URB\n");

drivers/media/usb/tm6000/tm6000-dvb.c

···
 	}
 
 	dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (dvb->bulk_urb == NULL) {
-		printk(KERN_ERR "tm6000: couldn't allocate urb\n");
+	if (dvb->bulk_urb == NULL)
 		return -ENOMEM;
-	}
 
 	pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
 							  & USB_ENDPOINT_NUMBER_MASK);

drivers/media/usb/tm6000/tm6000-video.c

···
 	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 		if (!urb) {
-			tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 			tm6000_uninit_isoc(dev);
 			usb_free_urb(urb);
 			return -ENOMEM;

drivers/media/usb/usbvision/usbvision-core.c

···
 		struct urb *urb;
 
 		urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
-		if (urb == NULL) {
-			dev_err(&usbvision->dev->dev,
-				"%s: usb_alloc_urb() failed\n", __func__);
+		if (urb == NULL)
 			return -ENOMEM;
-		}
 		usbvision->sbuf[buf_idx].urb = urb;
 		usbvision->sbuf[buf_idx].data =
 			usb_alloc_coherent(usbvision->dev,

drivers/media/usb/zr364xx/zr364xx.c

···
 	pipe_info->state = 1;
 	pipe_info->err_count = 0;
 	pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!pipe_info->stream_urb) {
-		dev_err(&cam->udev->dev, "ReadStream: Unable to alloc URB\n");
+	if (!pipe_info->stream_urb)
 		return -ENOMEM;
-	}
 	/* transfer buffer allocated in board_init */
 	usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev,
 			  pipe,

drivers/mmc/host/vub300.c

···
 	command_out_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!command_out_urb) {
 		retval = -ENOMEM;
-		dev_err(&udev->dev, "not enough memory for command_out_urb\n");
 		goto error0;
 	}
 	command_res_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!command_res_urb) {
 		retval = -ENOMEM;
-		dev_err(&udev->dev, "not enough memory for command_res_urb\n");
 		goto error1;
 	}
 	/* this also allocates memory for our VUB300 mmc host device */

drivers/phy/Kconfig

···
 	  Enable this to support Broadcom USB 2.0 PHY connected to the USB
 	  controller on Northstar family.
 
+config PHY_BCM_NS_USB3
+	tristate "Broadcom Northstar USB 3.0 PHY Driver"
+	depends on ARCH_BCM_IPROC || COMPILE_TEST
+	depends on HAS_IOMEM && OF
+	select GENERIC_PHY
+	help
+	  Enable this to support Broadcom USB 3.0 PHY connected to the USB
+	  controller on Northstar family.
+
 config PHY_BERLIN_USB
 	tristate "Marvell Berlin USB PHY Driver"
 	depends on ARCH_BERLIN && RESET_CONTROLLER && HAS_IOMEM && OF
···
 	depends on RESET_CONTROLLER
 	depends on EXTCON
 	depends on POWER_SUPPLY
+	depends on USB_SUPPORT
 	select GENERIC_PHY
+	select USB_COMMON
 	help
 	  Enable this to support the transceiver that is part of Allwinner
 	  sunxi SoCs.
···
 	help
 	  Enable this to support the Rockchip USB 2.0 PHY.
 
+config PHY_ROCKCHIP_INNO_USB2
+	tristate "Rockchip INNO USB2PHY Driver"
+	depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF
+	depends on COMMON_CLK
+	select GENERIC_PHY
+	help
+	  Support for Rockchip USB2.0 PHY with Innosilicon IP block.
+
 config PHY_ROCKCHIP_EMMC
 	tristate "Rockchip EMMC PHY Driver"
 	depends on ARCH_ROCKCHIP && OF
···
 	select GENERIC_PHY
 	help
 	  Enable this to support the Rockchip Display Port PHY.
+
+config PHY_ROCKCHIP_PCIE
+	tristate "Rockchip PCIe PHY Driver"
+	depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST
+	select GENERIC_PHY
+	select MFD_SYSCON
+	help
+	  Enable this to support the Rockchip PCIe PHY.
+
+config PHY_ROCKCHIP_TYPEC
+	tristate "Rockchip TYPEC PHY Driver"
+	depends on OF && (ARCH_ROCKCHIP || COMPILE_TEST)
+	select EXTCON
+	select GENERIC_PHY
+	select RESET_CONTROLLER
+	help
+	  Enable this to support the Rockchip USB TYPEC PHY.
 
 config PHY_ST_SPEAR1310_MIPHY
 	tristate "ST SPEAR1310-MIPHY driver"

drivers/phy/Makefile

···
 
 obj-$(CONFIG_GENERIC_PHY)		+= phy-core.o
 obj-$(CONFIG_PHY_BCM_NS_USB2)		+= phy-bcm-ns-usb2.o
+obj-$(CONFIG_PHY_BCM_NS_USB3)		+= phy-bcm-ns-usb3.o
 obj-$(CONFIG_PHY_BERLIN_USB)		+= phy-berlin-usb.o
 obj-$(CONFIG_PHY_BERLIN_SATA)		+= phy-berlin-sata.o
 obj-$(CONFIG_PHY_DA8XX_USB)		+= phy-da8xx-usb.o
···
 obj-$(CONFIG_PHY_EXYNOS5_USBDRD)	+= phy-exynos5-usbdrd.o
 obj-$(CONFIG_PHY_QCOM_APQ8064_SATA)	+= phy-qcom-apq8064-sata.o
 obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
+obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2)	+= phy-rockchip-inno-usb2.o
 obj-$(CONFIG_PHY_ROCKCHIP_EMMC) += phy-rockchip-emmc.o
+obj-$(CONFIG_PHY_ROCKCHIP_PCIE) += phy-rockchip-pcie.o
 obj-$(CONFIG_PHY_ROCKCHIP_DP)		+= phy-rockchip-dp.o
+obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o
 obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA)	+= phy-qcom-ipq806x-sata.o
 obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY)	+= phy-spear1310-miphy.o
 obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY)	+= phy-spear1340-miphy.o

drivers/phy/phy-bcm-ns-usb3.c

···
+/*
+ * Broadcom Northstar USB 3.0 PHY Driver
+ *
+ * Copyright (C) 2016 Rafał Miłecki <[e-mail]>
+ *
+ * All magic values used for initialization (and related comments) were obtained
+ * from Broadcom's SDK:
+ * Copyright (c) Broadcom Corp, 2012
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/bcma/bcma.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/phy/phy.h>
+#include <linux/slab.h>
+
+#define BCM_NS_USB3_MII_MNG_TIMEOUT_US	1000	/* usecs */
+
+enum bcm_ns_family {
+	BCM_NS_UNKNOWN,
+	BCM_NS_AX,
+	BCM_NS_BX,
+};
+
+struct bcm_ns_usb3 {
+	struct device *dev;
+	enum bcm_ns_family family;
+	void __iomem *dmp;
+	void __iomem *ccb_mii;
+	struct phy *phy;
+};
+
+static const struct of_device_id bcm_ns_usb3_id_table[] = {
+	{
+		.compatible = "brcm,ns-ax-usb3-phy",
+		.data = (int *)BCM_NS_AX,
+	},
+	{
+		.compatible = "brcm,ns-bx-usb3-phy",
+		.data = (int *)BCM_NS_BX,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm_ns_usb3_id_table);
+
+static int bcm_ns_usb3_wait_reg(struct bcm_ns_usb3 *usb3, void __iomem *addr,
+				u32 mask, u32 value, unsigned long timeout)
+{
+	unsigned long deadline = jiffies + timeout;
+	u32 val;
+
+	do {
+		val = readl(addr);
+		if ((val & mask) == value)
+			return 0;
+		cpu_relax();
+		udelay(10);
+	} while (!time_after_eq(jiffies, deadline));
+
+	dev_err(usb3->dev, "Timeout waiting for register %p\n", addr);
+
+	return -EBUSY;
+}
+
+static inline int bcm_ns_usb3_mii_mng_wait_idle(struct bcm_ns_usb3 *usb3)
+{
+	return bcm_ns_usb3_wait_reg(usb3, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL,
+				    0x0100, 0x0000,
+				    usecs_to_jiffies(BCM_NS_USB3_MII_MNG_TIMEOUT_US));
+}
+
+static int bcm_ns_usb3_mii_mng_write32(struct bcm_ns_usb3 *usb3, u32 value)
+{
+	int err;
+
+	err = bcm_ns_usb3_mii_mng_wait_idle(usb3);
+	if (err < 0) {
+		dev_err(usb3->dev, "Couldn't write 0x%08x value\n", value);
+		return err;
+	}
+
+	writel(value, usb3->ccb_mii + BCMA_CCB_MII_MNG_CMD_DATA);
+
+	return 0;
+}
+
+static int bcm_ns_usb3_phy_init_ns_bx(struct bcm_ns_usb3 *usb3)
+{
+	int err;
+
+	/* Enable MDIO. Setting MDCDIV as 26  */
+	writel(0x0000009a, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL);
+
+	/* Wait for MDIO? */
+	udelay(2);
+
+	/* USB3 PLL Block */
+	err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000);
+	if (err < 0)
+		return err;
+
+	/* Assert Ana_Pllseq start */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x58061000);
+
+	/* Assert CML Divider ratio to 26 */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400);
+
+	/* Asserting PLL Reset */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x582ec000);
+
+	/* Deaaserting PLL Reset */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x582e8000);
+
+	/* Waiting MII Mgt interface idle */
+	bcm_ns_usb3_mii_mng_wait_idle(usb3);
+
+	/* Deasserting USB3 system reset */
+	writel(0, usb3->dmp + BCMA_RESET_CTL);
+
+	/* PLL frequency monitor enable */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x58069000);
+
+	/* PIPE Block */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8060);
+
+	/* CMPMAX & CMPMINTH setting */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x580af30d);
+
+	/* DEGLITCH MIN & MAX setting */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x580e6302);
+
+	/* TXPMD block */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040);
+
+	/* Enabling SSC */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003);
+
+	/* Waiting MII Mgt interface idle */
+	bcm_ns_usb3_mii_mng_wait_idle(usb3);
+
+	return 0;
+}
+
+static int bcm_ns_usb3_phy_init_ns_ax(struct bcm_ns_usb3 *usb3)
+{
+	int err;
+
+	/* Enable MDIO. Setting MDCDIV as 26  */
+	writel(0x0000009a, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL);
+
+	/* Wait for MDIO? */
+	udelay(2);
+
+	/* PLL30 block */
+	err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000);
+	if (err < 0)
+		return err;
+
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400);
+
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x587e80e0);
+
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x580a009c);
+
+	/* Enable SSC */
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040);
+
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x580a21d3);
+
+	bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003);
+
+	/* Waiting MII Mgt interface idle */
+	bcm_ns_usb3_mii_mng_wait_idle(usb3);
+
+	/* Deasserting USB3 system reset */
+	writel(0, usb3->dmp + BCMA_RESET_CTL);
+
+	return 0;
+}
+
+static int bcm_ns_usb3_phy_init(struct phy *phy)
+{
+	struct bcm_ns_usb3 *usb3 = phy_get_drvdata(phy);
+	int err;
+
+	/* Perform USB3 system soft reset */
+	writel(BCMA_RESET_CTL_RESET, usb3->dmp + BCMA_RESET_CTL);
+
+	switch (usb3->family) {
+	case BCM_NS_AX:
+		err = bcm_ns_usb3_phy_init_ns_ax(usb3);
+		break;
+	case BCM_NS_BX:
+		err = bcm_ns_usb3_phy_init_ns_bx(usb3);
+		break;
+	default:
+		WARN_ON(1);
+		err = -ENOTSUPP;
+	}
+
+	return err;
+}
+
+static const struct phy_ops ops = {
+	.init		= bcm_ns_usb3_phy_init,
+	.owner		= THIS_MODULE,
+};
+
+static int bcm_ns_usb3_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	const struct of_device_id *of_id;
+	struct bcm_ns_usb3 *usb3;
+	struct resource *res;
+	struct phy_provider *phy_provider;
+
+	usb3 = devm_kzalloc(dev, sizeof(*usb3), GFP_KERNEL);
+	if (!usb3)
+		return -ENOMEM;
+
+	usb3->dev = dev;
+
+	of_id = of_match_device(bcm_ns_usb3_id_table, dev);
+	if (!of_id)
+		return -EINVAL;
+	usb3->family = (enum bcm_ns_family)of_id->data;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmp");
+	usb3->dmp = devm_ioremap_resource(dev, res);
+	if (IS_ERR(usb3->dmp)) {
+		dev_err(dev, "Failed to map DMP regs\n");
+		return PTR_ERR(usb3->dmp);
+	}
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ccb-mii");
+	usb3->ccb_mii = devm_ioremap_resource(dev, res);
+	if (IS_ERR(usb3->ccb_mii)) {
+		dev_err(dev, "Failed to map ChipCommon B MII regs\n");
+		return PTR_ERR(usb3->ccb_mii);
+	}
+
+	usb3->phy = devm_phy_create(dev, NULL, &ops);
+	if (IS_ERR(usb3->phy)) {
+		dev_err(dev, "Failed to create PHY\n");
+		return PTR_ERR(usb3->phy);
+	}
+
+	phy_set_drvdata(usb3->phy, usb3);
+	platform_set_drvdata(pdev, usb3);
+
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+	if (!IS_ERR(phy_provider))
+		dev_info(dev, "Registered Broadcom Northstar USB 3.0 PHY driver\n");
+
+	return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static struct platform_driver bcm_ns_usb3_driver = {
+	.probe		= bcm_ns_usb3_probe,
+	.driver = {
+		.name = "bcm_ns_usb3",
+		.of_match_table = bcm_ns_usb3_id_table,
+	},
+};
+module_platform_driver(bcm_ns_usb3_driver);
+
+MODULE_LICENSE("GPL v2");

drivers/phy/phy-bcm-ns2-pcie.c

···
 #include <linux/phy.h>
 #include <linux/phy/phy.h>
 
-struct ns2_pci_phy {
-	struct mdio_device *mdiodev;
-	struct phy *phy;
-};
-
 #define BLK_ADDR_REG_OFFSET	0x1f
 #define PLL_AFE1_100MHZ_BLK	0x2100
 #define PLL_CLK_AMP_OFFSET	0x03
···
 
 static int ns2_pci_phy_init(struct phy *p)
 {
-	struct ns2_pci_phy *phy = phy_get_drvdata(p);
+	struct mdio_device *mdiodev = phy_get_drvdata(p);
 	int rc;
 
 	/* select the AFE 100MHz block page */
-	rc = mdiobus_write(phy->mdiodev->bus, phy->mdiodev->addr,
+	rc = mdiobus_write(mdiodev->bus, mdiodev->addr,
 			   BLK_ADDR_REG_OFFSET, PLL_AFE1_100MHZ_BLK);
 	if (rc)
 		goto err;
 
 	/* set the 100 MHz reference clock amplitude to 2.05 v */
-	rc = mdiobus_write(phy->mdiodev->bus, phy->mdiodev->addr,
+	rc = mdiobus_write(mdiodev->bus, mdiodev->addr,
 			   PLL_CLK_AMP_OFFSET, PLL_CLK_AMP_2P05V);
 	if (rc)
 		goto err;
···
 	return 0;
 
 err:
-	dev_err(&phy->mdiodev->dev, "Error %d writing to phy\n", rc);
+	dev_err(&mdiodev->dev, "Error %d writing to phy\n", rc);
 	return rc;
 }
 
-static struct phy_ops ns2_pci_phy_ops = {
+static const struct phy_ops ns2_pci_phy_ops = {
 	.init = ns2_pci_phy_init,
+	.owner = THIS_MODULE,
 };
 
 static int ns2_pci_phy_probe(struct mdio_device *mdiodev)
 {
 	struct device *dev = &mdiodev->dev;
 	struct phy_provider *provider;
-	struct ns2_pci_phy *p;
 	struct phy *phy;
 
 	phy = devm_phy_create(dev, dev->of_node, &ns2_pci_phy_ops);
···
 		return PTR_ERR(phy);
 	}
 
-	p = devm_kmalloc(dev, sizeof(struct ns2_pci_phy),
-			 GFP_KERNEL);
-	if (!p)
-		return -ENOMEM;
-
-	p->mdiodev = mdiodev;
-	dev_set_drvdata(dev, p);
-
-	p->phy = phy;
-	phy_set_drvdata(phy, p);
+	phy_set_drvdata(phy, mdiodev);
 
 	provider = devm_of_phy_provider_register(&phy->dev,
 						 of_phy_simple_xlate);

drivers/phy/phy-core.c

···
 }
 EXPORT_SYMBOL_GPL(phy_set_mode);
 
+int phy_reset(struct phy *phy)
+{
+	int ret;
+
+	if (!phy || !phy->ops->reset)
+		return 0;
+
+	mutex_lock(&phy->mutex);
+	ret = phy->ops->reset(phy);
+	mutex_unlock(&phy->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_reset);
+
 /**
  * _of_phy_get() - lookup and obtain a reference to a phy by phandle
  * @np: device_node for which to get the phy

drivers/phy/phy-da8xx-usb.c

···
 		d_phy->regmap = syscon_regmap_lookup_by_compatible(
 							"ti,da830-cfgchip");
 	else
-		d_phy->regmap = syscon_regmap_lookup_by_pdevname("syscon.0");
+		d_phy->regmap = syscon_regmap_lookup_by_pdevname("syscon");
 	if (IS_ERR(d_phy->regmap)) {
 		dev_err(dev, "Failed to get syscon\n");
 		return PTR_ERR(d_phy->regmap);

drivers/phy/phy-exynos5-usbdrd.c

···
 static unsigned int
 exynos5_usbdrd_pipe3_set_refclk(struct phy_usb_instance *inst)
 {
-	static u32 reg;
+	u32 reg;
 	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
 
 	/* restore any previous reference clock settings */
···
 static unsigned int
 exynos5_usbdrd_utmi_set_refclk(struct phy_usb_instance *inst)
 {
-	static u32 reg;
+	u32 reg;
 	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
 
 	/* restore any previous reference clock settings */

drivers/phy/phy-omap-usb2.c

···
 	return omap_usb_phy_power(phy, true);
 }
 
+static int omap_usb2_disable_clocks(struct omap_usb *phy)
+{
+	clk_disable(phy->wkupclk);
+	if (!IS_ERR(phy->optclk))
+		clk_disable(phy->optclk);
+
+	return 0;
+}
+
+static int omap_usb2_enable_clocks(struct omap_usb *phy)
+{
+	int ret;
+
+	ret = clk_enable(phy->wkupclk);
+	if (ret < 0) {
+		dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
+		goto err0;
+	}
+
+	if (!IS_ERR(phy->optclk)) {
+		ret = clk_enable(phy->optclk);
+		if (ret < 0) {
+			dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
+			goto err1;
+		}
+	}
+
+	return 0;
+
+err1:
+	clk_disable(phy->wkupclk);
+
+err0:
+	return ret;
+}
+
 static int omap_usb_init(struct phy *x)
 {
 	struct omap_usb *phy = phy_get_drvdata(x);
 	u32 val;
+
+	omap_usb2_enable_clocks(phy);
 
 	if (phy->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) {
 		/*
···
 	return 0;
 }
 
+static int omap_usb_exit(struct phy *x)
+{
+	struct omap_usb *phy = phy_get_drvdata(x);
+
+	return omap_usb2_disable_clocks(phy);
+}
+
 static const struct phy_ops ops = {
 	.init		= omap_usb_init,
+	.exit		= omap_usb_exit,
 	.power_on	= omap_usb_power_on,
 	.power_off	= omap_usb_power_off,
 	.owner		= THIS_MODULE,
···
 	return 0;
 }
 
-#ifdef CONFIG_PM
-
-static int omap_usb2_runtime_suspend(struct device *dev)
-{
-	struct platform_device	*pdev = to_platform_device(dev);
-	struct omap_usb	*phy = platform_get_drvdata(pdev);
-
-	clk_disable(phy->wkupclk);
-	if (!IS_ERR(phy->optclk))
-		clk_disable(phy->optclk);
-
-	return 0;
-}
-
-static int omap_usb2_runtime_resume(struct device *dev)
-{
-	struct platform_device	*pdev = to_platform_device(dev);
-	struct omap_usb	*phy = platform_get_drvdata(pdev);
-	int ret;
-
-	ret = clk_enable(phy->wkupclk);
-	if (ret < 0) {
-		dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
-		goto err0;
-	}
-
-	if (!IS_ERR(phy->optclk)) {
-		ret = clk_enable(phy->optclk);
-		if (ret < 0) {
-			dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
-			goto err1;
-		}
-	}
-
-	return 0;
-
-err1:
-	clk_disable(phy->wkupclk);
-
-err0:
-	return ret;
-}
-
-static const struct dev_pm_ops omap_usb2_pm_ops = {
-	SET_RUNTIME_PM_OPS(omap_usb2_runtime_suspend, omap_usb2_runtime_resume,
-		NULL)
-};
-
-#define DEV_PM_OPS     (&omap_usb2_pm_ops)
-#else
-#define DEV_PM_OPS     NULL
-#endif
-
 static struct platform_driver omap_usb2_driver = {
 	.probe		= omap_usb2_probe,
 	.remove		= omap_usb2_remove,
 	.driver		= {
 		.name	= "omap-usb2",
-		.pm	= DEV_PM_OPS,
 		.of_match_table = omap_usb2_id_table,
 	},
 };

drivers/phy/phy-qcom-ufs.c

···
 			err = 0;
 		}
 		snprintf(prop_name, MAX_PROP_NAME, "%s-always-on", name);
-		if (of_get_property(dev->of_node, prop_name, NULL))
-			vreg->is_always_on = true;
-		else
-			vreg->is_always_on = false;
+		vreg->is_always_on = of_property_read_bool(dev->of_node,
+							   prop_name);
 	}
 
 	if (!strcmp(name, "vdda-pll")) {

drivers/phy/phy-rcar-gen3-usb2.c

···
 
 static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = {
 	{ .compatible = "renesas,usb2-phy-r8a7795" },
+	{ .compatible = "renesas,usb2-phy-r8a7796" },
 	{ .compatible = "renesas,rcar-gen3-usb2-phy" },
 	{ }
 };

drivers/phy/phy-rockchip-inno-usb2.c

···
+/*
+ * Rockchip USB2.0 PHY with Innosilicon IP block driver
+ *
+ * Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/gpio/consumer.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+
+#define BIT_WRITEABLE_SHIFT	16
+#define SCHEDULE_DELAY	(60 * HZ)
+
+enum rockchip_usb2phy_port_id {
+	USB2PHY_PORT_OTG,
+	USB2PHY_PORT_HOST,
+	USB2PHY_NUM_PORTS,
+};
+
+enum rockchip_usb2phy_host_state {
+	PHY_STATE_HS_ONLINE	= 0,
+	PHY_STATE_DISCONNECT	= 1,
+	PHY_STATE_CONNECT	= 2,
+	PHY_STATE_FS_LS_ONLINE	= 4,
+};
+
+struct usb2phy_reg {
+	unsigned int	offset;
+	unsigned int	bitend;
+	unsigned int	bitstart;
+	unsigned int	disable;
+	unsigned int	enable;
+};
+
+/**
+ * struct rockchip_usb2phy_port_cfg: usb-phy port configuration.
+ * @phy_sus: phy suspend register.
+ * @ls_det_en: linestate detection enable register.
+ * @ls_det_st: linestate detection state register.
+ * @ls_det_clr: linestate detection clear register.
+ * @utmi_ls: utmi linestate state register.
+ * @utmi_hstdet: utmi host disconnect register.
+ */
+struct rockchip_usb2phy_port_cfg {
+	struct usb2phy_reg	phy_sus;
+	struct usb2phy_reg	ls_det_en;
+	struct usb2phy_reg	ls_det_st;
+	struct usb2phy_reg	ls_det_clr;
+	struct usb2phy_reg	utmi_ls;
+	struct usb2phy_reg	utmi_hstdet;
+};
+
+/**
+ * struct rockchip_usb2phy_cfg: usb-phy configuration.
+ * @reg: the address offset of grf for usb-phy config.
+ * @num_ports: specify how many ports that the phy has.
+ * @clkout_ctl: keep on/turn off output clk of phy.
+ */
+struct rockchip_usb2phy_cfg {
+	unsigned int	reg;
+	unsigned int	num_ports;
+	struct usb2phy_reg	clkout_ctl;
+	const struct rockchip_usb2phy_port_cfg	port_cfgs[USB2PHY_NUM_PORTS];
+};
+
+/**
+ * struct rockchip_usb2phy_port: usb-phy port data.
+ * @port_id: flag for otg port or host port.
+ * @suspended: phy suspended flag.
+ * @ls_irq: IRQ number assigned for linestate detection.
+ * @mutex: for register updating in sm_work.
+ * @sm_work: OTG state machine work.
+ * @phy_cfg: port register configuration, assigned by driver data.
+ */
+struct rockchip_usb2phy_port {
+	struct phy	*phy;
+	unsigned int	port_id;
+	bool		suspended;
+	int		ls_irq;
+	struct mutex	mutex;
+	struct		delayed_work sm_work;
+	const struct	rockchip_usb2phy_port_cfg *port_cfg;
+};
+
+/**
+ * struct rockchip_usb2phy: usb2.0 phy driver data.
+ * @grf: General Register Files regmap.
+ * @clk: clock struct of phy input clk.
+ * @clk480m: clock struct of phy output clk.
+ * @clk_hw: clock struct of phy output clk management.
+ * @phy_cfg: phy register configuration, assigned by driver data.
+ * @ports: phy port instance.
+ */
+struct rockchip_usb2phy {
+	struct device	*dev;
+	struct regmap	*grf;
+	struct clk	*clk;
+	struct clk	*clk480m;
+	struct clk_hw	clk480m_hw;
+	const struct rockchip_usb2phy_cfg	*phy_cfg;
+	struct rockchip_usb2phy_port	ports[USB2PHY_NUM_PORTS];
+};
+
+static inline int property_enable(struct rockchip_usb2phy *rphy,
+				  const struct usb2phy_reg *reg, bool en)
+{
+	unsigned int val, mask, tmp;
+
+	tmp = en ? reg->enable : reg->disable;
+	mask = GENMASK(reg->bitend, reg->bitstart);
+	val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
+
+	return regmap_write(rphy->grf, reg->offset, val);
+}
+
+static inline bool property_enabled(struct rockchip_usb2phy *rphy,
+				    const struct usb2phy_reg *reg)
+{
+	int ret;
+	unsigned int tmp, orig;
+	unsigned int mask = GENMASK(reg->bitend, reg->bitstart);
+
+	ret = regmap_read(rphy->grf, reg->offset, &orig);
+	if (ret)
+		return false;
+
+	tmp = (orig & mask) >> reg->bitstart;
+	return tmp == reg->enable;
+}
+
+static int rockchip_usb2phy_clk480m_enable(struct clk_hw *hw)
+{
+	struct rockchip_usb2phy *rphy =
+		container_of(hw, struct rockchip_usb2phy, clk480m_hw);
+	int ret;
+
+	/* turn on 480m clk output if it is off */
+	if (!property_enabled(rphy, &rphy->phy_cfg->clkout_ctl)) {
+		ret = property_enable(rphy, &rphy->phy_cfg->clkout_ctl, true);
+		if (ret)
+			return ret;
+
+		/* waitting for the clk become stable */
+		mdelay(1);
+	}
+
+	return 0;
+}
+
+static void rockchip_usb2phy_clk480m_disable(struct clk_hw *hw)
+{
+	struct rockchip_usb2phy *rphy =
+		container_of(hw, struct rockchip_usb2phy, clk480m_hw);
+
+	/* turn off 480m clk output */
+	property_enable(rphy, &rphy->phy_cfg->clkout_ctl, false);
+}
+
+static int rockchip_usb2phy_clk480m_enabled(struct clk_hw *hw)
+{
+	struct rockchip_usb2phy *rphy =
+		container_of(hw, struct rockchip_usb2phy, clk480m_hw);
+
+	return property_enabled(rphy, &rphy->phy_cfg->clkout_ctl);
+}
+
+static unsigned long
+rockchip_usb2phy_clk480m_recalc_rate(struct clk_hw *hw,
+				     unsigned long parent_rate)
+{
+	return 480000000;
+}
+
+static const struct clk_ops rockchip_usb2phy_clkout_ops = {
+	.enable = rockchip_usb2phy_clk480m_enable,
+	.disable = rockchip_usb2phy_clk480m_disable,
+	.is_enabled = rockchip_usb2phy_clk480m_enabled,
+	.recalc_rate = rockchip_usb2phy_clk480m_recalc_rate,
+};
+
+static void rockchip_usb2phy_clk480m_unregister(void *data)
+{
+	struct rockchip_usb2phy *rphy = data;
+
+	of_clk_del_provider(rphy->dev->of_node);
+	clk_unregister(rphy->clk480m);
+}
+
+static int
+rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy)
+{
+	struct device_node *node = rphy->dev->of_node;
+	struct clk_init_data init;
+	const char *clk_name;
+	int ret;
+
+	init.flags = 0;
+	init.name = "clk_usbphy_480m";
+	init.ops = &rockchip_usb2phy_clkout_ops;
+
+	/* optional override of the clockname */
+	of_property_read_string(node, "clock-output-names", &init.name);
+
+	if (rphy->clk) {
+		clk_name = __clk_get_name(rphy->clk);
+		init.parent_names = &clk_name;
+		init.num_parents = 1;
+	} else {
+		init.parent_names = NULL;
+		init.num_parents = 0;
+	}
+
+	rphy->clk480m_hw.init = &init;
+
+	/* register the clock */
+	rphy->clk480m = clk_register(rphy->dev, &rphy->clk480m_hw);
+	if (IS_ERR(rphy->clk480m)) {
+		ret = PTR_ERR(rphy->clk480m);
+		goto err_ret;
+	}
+
+	ret = of_clk_add_provider(node, of_clk_src_simple_get, rphy->clk480m);
+	if (ret < 0)
+		goto err_clk_provider;
+
+	ret = devm_add_action(rphy->dev, rockchip_usb2phy_clk480m_unregister,
+			      rphy);
+	if (ret < 0)
+		goto err_unreg_action;
+
+	return 0;
+
+err_unreg_action:
+	of_clk_del_provider(node);
+err_clk_provider:
+	clk_unregister(rphy->clk480m);
+err_ret:
+	return ret;
+}
+
+static int rockchip_usb2phy_init(struct phy *phy)
+{
+	struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
+	struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
+	int ret;
+
+	if (rport->port_id == USB2PHY_PORT_HOST) {
+		/* clear linestate and enable linestate detect irq */
+		mutex_lock(&rport->mutex);
+
+		ret = property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
+		if (ret) {
+			mutex_unlock(&rport->mutex);
+			return ret;
+		}
+
+		ret = property_enable(rphy, &rport->port_cfg->ls_det_en, true);
+		if (ret) {
+			mutex_unlock(&rport->mutex);
+			return ret;
+		}
+
+		mutex_unlock(&rport->mutex);
+		schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY);
+	}
+
+	return 0;
+}
+
+static int rockchip_usb2phy_power_on(struct phy *phy)
+{
+	struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
+	struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
+	int ret;
+
+	dev_dbg(&rport->phy->dev, "port power on\n");
+
+	if (!rport->suspended)
+		return 0;
+
+	ret = clk_prepare_enable(rphy->clk480m);
+	if (ret)
+		return ret;
+
+	ret = property_enable(rphy, &rport->port_cfg->phy_sus, false);
+	if (ret)
+		return ret;
+
+	rport->suspended = false;
+	return 0;
+}
+
+static int rockchip_usb2phy_power_off(struct phy *phy)
+{
+	struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
+	struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
+	int ret;
+
+	dev_dbg(&rport->phy->dev, "port power off\n");
+
+	if (rport->suspended)
+		return 0;
+
+	ret = property_enable(rphy, &rport->port_cfg->phy_sus, true);
+	if (ret)
+		return ret;
+
+	rport->suspended = true;
+	clk_disable_unprepare(rphy->clk480m);
+
+	return 0;
+}
+
+static int rockchip_usb2phy_exit(struct phy *phy)
+{
+	struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
+
+	if (rport->port_id == USB2PHY_PORT_HOST)
+		cancel_delayed_work_sync(&rport->sm_work);
+
+	return 0;
+}
+
+static const struct phy_ops rockchip_usb2phy_ops = {
+	.init		= rockchip_usb2phy_init,
+	.exit		= rockchip_usb2phy_exit,
+	.power_on	= rockchip_usb2phy_power_on,
+	.power_off	= rockchip_usb2phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+/*
+ * The function manage host-phy port state and suspend/resume phy port
+ * to save power.
+ *
+ * we rely on utmi_linestate and utmi_hostdisconnect to identify whether
+ * devices is disconnect or not. Besides, we do not need care it is FS/LS
+ * disconnected or HS disconnected, actually, we just only need get the
+ * device is disconnected at last through rearm the delayed work,
+ * to suspend the phy port in _PHY_STATE_DISCONNECT_ case.
+ *
+ * NOTE: It may invoke *phy_powr_off or *phy_power_on which will invoke
+ * some clk related APIs, so do not invoke it from interrupt context directly.
+ */
+static void rockchip_usb2phy_sm_work(struct work_struct *work)
+{
+	struct rockchip_usb2phy_port *rport =
+		container_of(work, struct rockchip_usb2phy_port, sm_work.work);
+	struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
+	unsigned int sh = rport->port_cfg->utmi_hstdet.bitend -
+			  rport->port_cfg->utmi_hstdet.bitstart + 1;
+	unsigned int ul, uhd, state;
+	unsigned int ul_mask, uhd_mask;
+	int ret;
+
+	mutex_lock(&rport->mutex);
+
+	ret = regmap_read(rphy->grf, rport->port_cfg->utmi_ls.offset, &ul);
+	if (ret < 0)
+		goto next_schedule;
+
+	ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset,
+			  &uhd);
+	if (ret < 0)
+		goto next_schedule;
+
+	uhd_mask = GENMASK(rport->port_cfg->utmi_hstdet.bitend,
+			   rport->port_cfg->utmi_hstdet.bitstart);
+	ul_mask = GENMASK(rport->port_cfg->utmi_ls.bitend,
+			  rport->port_cfg->utmi_ls.bitstart);
+
+	/* stitch on utmi_ls and utmi_hstdet as phy state */
+	state = ((uhd & uhd_mask) >> rport->port_cfg->utmi_hstdet.bitstart) |
+		(((ul & ul_mask) >> rport->port_cfg->utmi_ls.bitstart) << sh);
+
+	switch (state) {
+	case PHY_STATE_HS_ONLINE:
+		dev_dbg(&rport->phy->dev, "HS online\n");
+		break;
+	case PHY_STATE_FS_LS_ONLINE:
+		/*
+		 * For FS/LS device, the online state share with connect state
+		 * from utmi_ls and utmi_hstdet register, so we distinguish
+		 * them via suspended flag.
+		 *
+		 * Plus, there are two cases, one is D- Line pull-up, and D+
+		 * line pull-down, the state is 4; another is D+ line pull-up,
+		 * and D- line pull-down, the state is 2.
+		 */
+		if (!rport->suspended) {
+			/* D- line pull-up, D+ line pull-down */
+			dev_dbg(&rport->phy->dev, "FS/LS online\n");
+			break;
+		}
+		/* fall through */
+	case PHY_STATE_CONNECT:
+		if (rport->suspended) {
+			dev_dbg(&rport->phy->dev, "Connected\n");
+			rockchip_usb2phy_power_on(rport->phy);
+			rport->suspended = false;
+		} else {
+			/* D+ line pull-up, D- line pull-down */
+			dev_dbg(&rport->phy->dev, "FS/LS online\n");
+		}
+		break;
+	case PHY_STATE_DISCONNECT:
+		if (!rport->suspended) {
+			dev_dbg(&rport->phy->dev, "Disconnected\n");
+			rockchip_usb2phy_power_off(rport->phy);
+			rport->suspended = true;
+		}
+
+		/*
+		 * activate the linestate detection to get the next device
+		 * plug-in irq.
+		 */
+		property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
+		property_enable(rphy, &rport->port_cfg->ls_det_en, true);
+
+		/*
+		 * we don't need to rearm the delayed work when the phy port
+		 * is suspended.
+		 */
+		mutex_unlock(&rport->mutex);
+		return;
+	default:
+		dev_dbg(&rport->phy->dev, "unknown phy state\n");
+		break;
+	}
+
+next_schedule:
+	mutex_unlock(&rport->mutex);
+	schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY);
+}
+
+static irqreturn_t rockchip_usb2phy_linestate_irq(int irq, void *data)
+{
+	struct rockchip_usb2phy_port *rport = data;
+	struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
+
+	if (!property_enabled(rphy, &rport->port_cfg->ls_det_st))
+		return IRQ_NONE;
+
+	mutex_lock(&rport->mutex);
+
+	/* disable linestate detect irq and clear its status */
+	property_enable(rphy, &rport->port_cfg->ls_det_en, false);
+	property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
+
+	mutex_unlock(&rport->mutex);
+
+	/*
+	 * In this case for host phy port, a new device is plugged in,
+	 * meanwhile, if the phy port is suspended, we need rearm the work to
+	 * resume it and mange its states; otherwise, we do nothing about that.
+	 */
+	if (rport->suspended && rport->port_id == USB2PHY_PORT_HOST)
+		rockchip_usb2phy_sm_work(&rport->sm_work.work);
+
+	return IRQ_HANDLED;
+}
+
+static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy,
+					   struct rockchip_usb2phy_port *rport,
+					   struct device_node *child_np)
+{
+	int ret;
+
+	rport->port_id = USB2PHY_PORT_HOST;
+	rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_HOST];
+	rport->suspended = true;
+
+	mutex_init(&rport->mutex);
+	INIT_DELAYED_WORK(&rport->sm_work, rockchip_usb2phy_sm_work);
+
+	rport->ls_irq = of_irq_get_byname(child_np, "linestate");
+	if (rport->ls_irq < 0) {
+		dev_err(rphy->dev, "no linestate irq provided\n");
+		return rport->ls_irq;
+	}
+
+	ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL,
+					rockchip_usb2phy_linestate_irq,
+					IRQF_ONESHOT,
+					"rockchip_usb2phy", rport);
+	if (ret) {
+		dev_err(rphy->dev, "failed to request irq handle\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int rockchip_usb2phy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *child_np;
+	struct phy_provider *provider;
+	struct rockchip_usb2phy *rphy;
+	const struct rockchip_usb2phy_cfg *phy_cfgs;
+	const struct of_device_id *match;
+	unsigned int reg;
+	int index, ret;
+
+	rphy = devm_kzalloc(dev, sizeof(*rphy), GFP_KERNEL);
+	if (!rphy)
+		return -ENOMEM;
+
+	match = of_match_device(dev->driver->of_match_table, dev);
+	if (!match || !match->data) {
+		dev_err(dev, "phy configs are not assigned!\n");
+		return -EINVAL;
+	}
+
+	if (!dev->parent || !dev->parent->of_node)
+		return -EINVAL;
+
+	rphy->grf = syscon_node_to_regmap(dev->parent->of_node);
+	if (IS_ERR(rphy->grf))
+		return PTR_ERR(rphy->grf);
+
+	if (of_property_read_u32(np, "reg", &reg)) {
+		dev_err(dev, "the reg property is not assigned in %s node\n",
+			np->name);
+		return -EINVAL;
+	}
+
+	rphy->dev = dev;
+	phy_cfgs = match->data;
+	platform_set_drvdata(pdev, rphy);
+
+	/* find out a proper config which can be matched with dt. */
+	index = 0;
+	while (phy_cfgs[index].reg) {
+		if (phy_cfgs[index].reg == reg) {
+			rphy->phy_cfg = &phy_cfgs[index];
+			break;
+		}
+
+		++index;
+	}
+
+	if (!rphy->phy_cfg) {
+		dev_err(dev, "no phy-config can be matched with %s node\n",
+			np->name);
+		return -EINVAL;
+	}
+
+	rphy->clk = of_clk_get_by_name(np, "phyclk");
+	if (!IS_ERR(rphy->clk)) {
+		clk_prepare_enable(rphy->clk);
+	} else {
+		dev_info(&pdev->dev, "no phyclk specified\n");
+		rphy->clk = NULL;
+	}
+
+	ret = rockchip_usb2phy_clk480m_register(rphy);
+	if (ret) {
+		dev_err(dev, "failed to register 480m output clock\n");
+		goto disable_clks;
+	}
+
+	index = 0;
+	for_each_available_child_of_node(np, child_np) {
+		struct rockchip_usb2phy_port *rport = &rphy->ports[index];
+		struct phy *phy;
+
+		/*
+		 * This driver aim to support both otg-port and host-port,
+		 * but unfortunately, the otg part is not ready in current,
+		 * so this comments and below codes are interim, which should
+		 * be changed after otg-port is supplied soon.
+		 */
+		if (of_node_cmp(child_np->name, "host-port"))
+			goto next_child;
+
+		phy = devm_phy_create(dev, child_np, &rockchip_usb2phy_ops);
+		if (IS_ERR(phy)) {
+			dev_err(dev, "failed to create phy\n");
+			ret = PTR_ERR(phy);
+			goto put_child;
+		}
+
+		rport->phy = phy;
+		phy_set_drvdata(rport->phy, rport);
+
+		ret = rockchip_usb2phy_host_port_init(rphy, rport, child_np);
+		if (ret)
+			goto put_child;
+
+next_child:
+		/* to prevent out of boundary */
+		if (++index >= rphy->phy_cfg->num_ports)
+			break;
+	}
+
+	provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+	return PTR_ERR_OR_ZERO(provider);
+
+put_child:
+	of_node_put(child_np);
+disable_clks:
+	if (rphy->clk) {
+		clk_disable_unprepare(rphy->clk);
+		clk_put(rphy->clk);
+	}
+	return ret;
+}
+
+static const struct rockchip_usb2phy_cfg rk3366_phy_cfgs[] = {
+	{
+		.reg = 0x700,
+		.num_ports	= 2,
+		.clkout_ctl	= { 0x0724, 15, 15, 1, 0 },
+		.port_cfgs	= {
+			[USB2PHY_PORT_HOST] = {
+				.phy_sus	= { 0x0728, 15, 0, 0, 0x1d1 },
+				.ls_det_en	= { 0x0680, 4, 4, 0, 1 },
+				.ls_det_st	= { 0x0690, 4, 4, 0, 1 },
+				.ls_det_clr	= { 0x06a0, 4, 4, 0, 1 },
+				.utmi_ls	= { 0x049c, 14, 13, 0, 1 },
+				.utmi_hstdet	= { 0x049c, 12, 12, 0, 1 }
+			}
+		},
+	},
+	{ /* sentinel */ }
+};
+
+static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
+	{
+		.reg = 0xe450,
+		.num_ports	= 2,
+		.clkout_ctl	= { 0xe450, 4, 4, 1, 0 },
+		.port_cfgs	= {
+			[USB2PHY_PORT_HOST] = {
+				.phy_sus	= { 0xe458, 1, 0, 0x2, 0x1 },
+				.ls_det_en	= { 0xe3c0, 6, 6, 0, 1 },
+				.ls_det_st	= { 0xe3e0, 6, 6, 0, 1 },
+				.ls_det_clr	= { 0xe3d0, 6, 6, 0, 1 },
+				.utmi_ls	= { 0xe2ac, 22, 21, 0, 1 },
+				.utmi_hstdet	= { 0xe2ac, 23, 23, 0, 1 }
+			}
+		},
+	},
+	{
+		.reg = 0xe460,
+		.num_ports	= 2,
+		.clkout_ctl	= { 0xe460, 4, 4, 1, 0 },
+		.port_cfgs	= {
+			[USB2PHY_PORT_HOST] = {
+				.phy_sus	= { 0xe468, 1, 0, 0x2, 0x1 },
+				.ls_det_en	= { 0xe3c0, 11, 11, 0, 1 },
+				.ls_det_st	= { 0xe3e0, 11, 11, 0, 1 },
+				.ls_det_clr	= { 0xe3d0, 11, 11, 0, 1 },
+				.utmi_ls	= { 0xe2ac, 26, 25, 0, 1 },
+				.utmi_hstdet	= { 0xe2ac, 27, 27, 0, 1 }
+			}
+		},
+	},
+	{ /* sentinel */ }
+};
+
+static const struct of_device_id rockchip_usb2phy_dt_match[] = {
+	{ .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs },
+	{ .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rockchip_usb2phy_dt_match);
+
+static struct platform_driver rockchip_usb2phy_driver = {
+	.probe		= rockchip_usb2phy_probe,
+	.driver		= {
+		.name	= "rockchip-usb2phy",
+		.of_match_table = rockchip_usb2phy_dt_match,
+	},
+};
+module_platform_driver(rockchip_usb2phy_driver);
+
+MODULE_AUTHOR("Frank Wang <[e-mail]>");
+MODULE_DESCRIPTION("Rockchip USB2.0 PHY driver");
+MODULE_LICENSE("GPL v2");

drivers/phy/phy-rockchip-pcie.c

···
+/*
+ * Rockchip PCIe PHY driver
+ *
+ * Copyright (C) 2016 Shawn Lin <[e-mail]>
+ * Copyright (C) 2016 ROCKCHIP, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+/*
+ * The higher 16-bit of this register is used for write protection
+ * only if BIT(x + 16) set to 1 the BIT(x) can be written.
+ */
+#define HIWORD_UPDATE(val, mask, shift) \
+		((val) << (shift) | (mask) << ((shift) + 16))
+
+#define PHY_MAX_LANE_NUM      4
+#define PHY_CFG_DATA_SHIFT    7
+#define PHY_CFG_ADDR_SHIFT    1
+#define PHY_CFG_DATA_MASK     0xf
+#define PHY_CFG_ADDR_MASK     0x3f
+#define PHY_CFG_RD_MASK       0x3ff
+#define PHY_CFG_WR_ENABLE     1
+#define PHY_CFG_WR_DISABLE    1
+#define PHY_CFG_WR_SHIFT      0
+#define PHY_CFG_WR_MASK       1
+#define PHY_CFG_PLL_LOCK      0x10
+#define PHY_CFG_CLK_TEST      0x10
+#define PHY_CFG_CLK_SCC       0x12
+#define PHY_CFG_SEPE_RATE     BIT(3)
+#define PHY_CFG_PLL_100M      BIT(3)
+#define PHY_PLL_LOCKED        BIT(9)
+#define PHY_PLL_OUTPUT        BIT(10)
+#define PHY_LANE_A_STATUS     0x30
+#define PHY_LANE_B_STATUS     0x31
+#define PHY_LANE_C_STATUS     0x32
+#define PHY_LANE_D_STATUS     0x33
+#define PHY_LANE_RX_DET_SHIFT 11
+#define PHY_LANE_RX_DET_TH    0x1
+#define PHY_LANE_IDLE_OFF     0x1
+#define PHY_LANE_IDLE_MASK    0x1
+#define PHY_LANE_IDLE_A_SHIFT 3
+#define PHY_LANE_IDLE_B_SHIFT 4
+#define PHY_LANE_IDLE_C_SHIFT 5
+#define PHY_LANE_IDLE_D_SHIFT 6
+
+struct rockchip_pcie_data {
+	unsigned int pcie_conf;
+	unsigned int pcie_status;
+	unsigned int pcie_laneoff;
+};
+
+struct rockchip_pcie_phy {
+	struct rockchip_pcie_data *phy_data;
+	struct regmap *reg_base;
+	struct reset_control *phy_rst;
+	struct clk *clk_pciephy_ref;
+};
+
+static inline void phy_wr_cfg(struct rockchip_pcie_phy *rk_phy,
+			      u32 addr, u32 data)
+{
+	regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
+		     HIWORD_UPDATE(data,
+				   PHY_CFG_DATA_MASK,
+				   PHY_CFG_DATA_SHIFT) |
+		     HIWORD_UPDATE(addr,
+				   PHY_CFG_ADDR_MASK,
+				   PHY_CFG_ADDR_SHIFT));
+	udelay(1);
+	regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
+		     HIWORD_UPDATE(PHY_CFG_WR_ENABLE,
+				   PHY_CFG_WR_MASK,
+				   PHY_CFG_WR_SHIFT));
+	udelay(1);
+	regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
+		     HIWORD_UPDATE(PHY_CFG_WR_DISABLE,
+				   PHY_CFG_WR_MASK,
+				   PHY_CFG_WR_SHIFT));
+}
+
+static inline u32 phy_rd_cfg(struct rockchip_pcie_phy *rk_phy,
+			     u32 addr)
+{
+	u32 val;
+
+	regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
+		     HIWORD_UPDATE(addr,
+				   PHY_CFG_RD_MASK,
+				   PHY_CFG_ADDR_SHIFT));
+	regmap_read(rk_phy->reg_base,
+		    rk_phy->phy_data->pcie_status,
+		    &val);
+	return val;
+}
+
+static int rockchip_pcie_phy_power_off(struct phy *phy)
+{
+	struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
+	int err = 0;
+
+	err = reset_control_assert(rk_phy->phy_rst);
+	if (err) {
+		dev_err(&phy->dev, "assert phy_rst err %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int rockchip_pcie_phy_power_on(struct phy *phy)
+{
+	struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
+	int err = 0;
+	u32 status;
+	unsigned long timeout;
+
+	err = reset_control_deassert(rk_phy->phy_rst);
+	if (err) {
+		dev_err(&phy->dev, "deassert phy_rst err %d\n", err);
+		return err;
+	}
+
+	regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
+		     HIWORD_UPDATE(PHY_CFG_PLL_LOCK,
+				   PHY_CFG_ADDR_MASK,
+				   PHY_CFG_ADDR_SHIFT));
+
+	/*
+	 * No documented timeout value for phy operation below,
+	 * so we make it large enough here. And we use loop-break
+	 * method which should not be harmful.
+	 */
+	timeout = jiffies + msecs_to_jiffies(1000);
+
+	err = -EINVAL;
+	while (time_before(jiffies, timeout)) {
+		regmap_read(rk_phy->reg_base,
+			    rk_phy->phy_data->pcie_status,
+			    &status);
+		if (status & PHY_PLL_LOCKED) {
+			dev_dbg(&phy->dev, "pll locked!\n");
+			err = 0;
+			break;
+		}
+		msleep(20);
+	}
+
+	if (err) {
+		dev_err(&phy->dev, "pll lock timeout!\n");
+		goto err_pll_lock;
+	}
+
+	phy_wr_cfg(rk_phy, PHY_CFG_CLK_TEST, PHY_CFG_SEPE_RATE);
+	phy_wr_cfg(rk_phy, PHY_CFG_CLK_SCC, PHY_CFG_PLL_100M);
+
+	err = -ETIMEDOUT;
+	while (time_before(jiffies, timeout)) {
+		regmap_read(rk_phy->reg_base,
+			    rk_phy->phy_data->pcie_status,
+			    &status);
+		if (!(status & PHY_PLL_OUTPUT)) {
+			dev_dbg(&phy->dev, "pll output enable done!\n");
+			err = 0;
+			break;
+		}
+		msleep(20);
+	}
+
+	if (err) {
+		dev_err(&phy->dev, "pll output enable timeout!\n");
+		goto err_pll_lock;
+	}
+
+	regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
+		     HIWORD_UPDATE(PHY_CFG_PLL_LOCK,
+				   PHY_CFG_ADDR_MASK,
+				   PHY_CFG_ADDR_SHIFT));
+	err = -EINVAL;
+	while (time_before(jiffies, timeout)) {
+		regmap_read(rk_phy->reg_base,
+			    rk_phy->phy_data->pcie_status,
+			    &status);
+		if (status & PHY_PLL_LOCKED) {
+			dev_dbg(&phy->dev, "pll relocked!\n");
+			err = 0;
+			break;
+		}
+		msleep(20);
+	}
+
+	if (err) {
+		dev_err(&phy->dev, "pll relock timeout!\n");
+		goto err_pll_lock;
+	}
+
+	return 0;
+
+err_pll_lock:
+	reset_control_assert(rk_phy->phy_rst);
+	return err;
+}
+
+static int rockchip_pcie_phy_init(struct phy *phy)
+{
+	struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
+	int err = 0;
+
+	err = clk_prepare_enable(rk_phy->clk_pciephy_ref);
+	if (err) {
+		dev_err(&phy->dev, "Fail to enable pcie ref clock.\n");
+		goto err_refclk;
+	}
+
+	err = reset_control_assert(rk_phy->phy_rst);
+	if (err) {
+		dev_err(&phy->dev, "assert phy_rst err %d\n", err);
+		goto err_reset;
+	}
+
+	return err;
+
+err_reset:
+	clk_disable_unprepare(rk_phy->clk_pciephy_ref);
+err_refclk:
+	return err;
+}
+
+static int rockchip_pcie_phy_exit(struct phy *phy)
+{
+	struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
+	int err = 0;
+
+	clk_disable_unprepare(rk_phy->clk_pciephy_ref);
+
+	err = reset_control_deassert(rk_phy->phy_rst);
+	if (err) {
+		dev_err(&phy->dev, "deassert phy_rst err %d\n", err);
+		goto err_reset;
+	}
+
+	return err;
+
+err_reset:
+	clk_prepare_enable(rk_phy->clk_pciephy_ref);
+	return err;
+}
+
+static const struct phy_ops ops = {
+	.init		= rockchip_pcie_phy_init,
+	.exit		= rockchip_pcie_phy_exit,
+	.power_on	= rockchip_pcie_phy_power_on,
+	.power_off	= rockchip_pcie_phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+static const struct rockchip_pcie_data rk3399_pcie_data = {
+	.pcie_conf = 0xe220,
+	.pcie_status = 0xe2a4,
+	.pcie_laneoff = 0xe214,
+};
+
+static const struct of_device_id rockchip_pcie_phy_dt_ids[] = {
+	{
+		.compatible = "rockchip,rk3399-pcie-phy",
+		.data = &rk3399_pcie_data,
+	},
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, rockchip_pcie_phy_dt_ids);
+
+static int rockchip_pcie_phy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rockchip_pcie_phy *rk_phy;
+	struct phy *generic_phy;
+	struct phy_provider *phy_provider;
+	struct regmap *grf;
+	const struct of_device_id *of_id;
+
+	grf = syscon_node_to_regmap(dev->parent->of_node);
+	if (IS_ERR(grf)) {
+		dev_err(dev, "Cannot find GRF syscon\n");
+		return PTR_ERR(grf);
+	}
+
+	rk_phy = devm_kzalloc(dev, sizeof(*rk_phy), GFP_KERNEL);
+	if (!rk_phy)
+		return -ENOMEM;
+
+	of_id = of_match_device(rockchip_pcie_phy_dt_ids, &pdev->dev);
+	if (!of_id)
+		return -EINVAL;
+
+	rk_phy->phy_data = (struct rockchip_pcie_data *)of_id->data;
+	rk_phy->reg_base = grf;
+
+	rk_phy->phy_rst = devm_reset_control_get(dev, "phy");
+	if (IS_ERR(rk_phy->phy_rst)) {
+		if (PTR_ERR(rk_phy->phy_rst) != -EPROBE_DEFER)
+			dev_err(dev,
+				"missing phy property for reset controller\n");
+		return PTR_ERR(rk_phy->phy_rst);
+	}
+
+	rk_phy->clk_pciephy_ref = devm_clk_get(dev, "refclk");
+	if (IS_ERR(rk_phy->clk_pciephy_ref)) {
+		dev_err(dev, "refclk not found.\n");
+		return PTR_ERR(rk_phy->clk_pciephy_ref);
+	}
+
+	generic_phy = devm_phy_create(dev, dev->of_node, &ops);
+	if (IS_ERR(generic_phy)) {
+		dev_err(dev, "failed to create PHY\n");
+		return PTR_ERR(generic_phy);
+	}
+
+	phy_set_drvdata(generic_phy, rk_phy);
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+
+	return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static struct platform_driver rockchip_pcie_driver = {
+	.probe		= rockchip_pcie_phy_probe,
+	.driver		= {
+		.name	= "rockchip-pcie-phy",
+		.of_match_table = rockchip_pcie_phy_dt_ids,
+	},
+};
+
+module_platform_driver(rockchip_pcie_driver);
+
+MODULE_AUTHOR("Shawn Lin <[e-mail]>");
+MODULE_DESCRIPTION("Rockchip PCIe PHY driver");
+MODULE_LICENSE("GPL v2");

drivers/phy/phy-rockchip-typec.c

···
+/*
+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
+ * Author: Chris Zhong <[e-mail]>
+ *         Kever Yang <[e-mail]>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * The ROCKCHIP Type-C PHY has two PLL clocks. The first PLL clock
+ * is used for USB3, the second PLL clock is used for DP. This Type-C PHY has
+ * 3 working modes: USB3 only mode, DP only mode, and USB3+DP mode.
+ * At USB3 only mode, both PLL clocks need to be initialized, this allows the
+ * PHY to switch mode between USB3 and USB3+DP, without disconnecting the USB
+ * device.
+ * In The DP only mode, only the DP PLL needs to be powered on, and the 4 lanes
+ * are all used for DP.
+ *
+ * This driver gets extcon cable state and property, then decides which mode to
+ * select:
+ *
+ * 1. USB3 only mode:
+ *    EXTCON_USB or EXTCON_USB_HOST state is true, and
+ *    EXTCON_PROP_USB_SS property is true.
+ *    EXTCON_DISP_DP state is false.
+ *
+ * 2. DP only mode:
+ *    EXTCON_DISP_DP state is true, and
+ *    EXTCON_PROP_USB_SS property is false.
+ *    If EXTCON_USB_HOST state is true, it is DP + USB2 mode, since the USB2 phy
+ *    is a separate phy, so this case is still DP only mode.
+ *
+ * 3. USB3+DP mode:
+ *    EXTCON_USB_HOST and EXTCON_DISP_DP are both true, and
+ *    EXTCON_PROP_USB_SS property is true.
+ *
+ * This Type-C PHY driver supports normal and flip orientation. The orientation
+ * is reported by the EXTCON_PROP_USB_TYPEC_POLARITY property: true is flip
+ * orientation, false is normal orientation.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/extcon.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include <linux/mfd/syscon.h>
+#include <linux/phy/phy.h>
+
+#define CMN_SSM_BANDGAP			(0x21 << 2)
+#define CMN_SSM_BIAS			(0x22 << 2)
+#define CMN_PLLSM0_PLLEN		(0x29 << 2)
+#define CMN_PLLSM0_PLLPRE		(0x2a << 2)
+#define CMN_PLLSM0_PLLVREF		(0x2b << 2)
+#define CMN_PLLSM0_PLLLOCK		(0x2c << 2)
+#define CMN_PLLSM1_PLLEN		(0x31 << 2)
+#define CMN_PLLSM1_PLLPRE		(0x32 << 2)
+#define CMN_PLLSM1_PLLVREF		(0x33 << 2)
+#define CMN_PLLSM1_PLLLOCK		(0x34 << 2)
+#define CMN_PLLSM1_USER_DEF_CTRL	(0x37 << 2)
+#define CMN_ICAL_OVRD			(0xc1 << 2)
+#define CMN_PLL0_VCOCAL_OVRD		(0x83 << 2)
+#define CMN_PLL0_VCOCAL_INIT		(0x84 << 2)
+#define CMN_PLL0_VCOCAL_ITER		(0x85 << 2)
+#define CMN_PLL0_LOCK_REFCNT_START	(0x90 << 2)
+#define CMN_PLL0_LOCK_PLLCNT_START	(0x92 << 2)
+#define CMN_PLL0_LOCK_PLLCNT_THR	(0x93 << 2)
+#define CMN_PLL0_INTDIV			(0x94 << 2)
+#define CMN_PLL0_FRACDIV		(0x95 << 2)
+#define CMN_PLL0_HIGH_THR		(0x96 << 2)
+#define CMN_PLL0_DSM_DIAG		(0x97 << 2)
+#define CMN_PLL0_SS_CTRL1		(0x98 << 2)
+#define CMN_PLL0_SS_CTRL2		(0x99 << 2)
+#define CMN_PLL1_VCOCAL_START		(0xa1 << 2)
+#define CMN_PLL1_VCOCAL_OVRD		(0xa3 << 2)
+#define CMN_PLL1_VCOCAL_INIT		(0xa4 << 2)
+#define CMN_PLL1_VCOCAL_ITER		(0xa5 << 2)
+#define CMN_PLL1_LOCK_REFCNT_START	(0xb0 << 2)
+#define CMN_PLL1_LOCK_PLLCNT_START	(0xb2 << 2)
+#define CMN_PLL1_LOCK_PLLCNT_THR	(0xb3 << 2)
+#define CMN_PLL1_INTDIV			(0xb4 << 2)
+#define CMN_PLL1_FRACDIV		(0xb5 << 2)
+#define CMN_PLL1_HIGH_THR		(0xb6 << 2)
+#define CMN_PLL1_DSM_DIAG		(0xb7 << 2)
+#define CMN_PLL1_SS_CTRL1		(0xb8 << 2)
+#define CMN_PLL1_SS_CTRL2		(0xb9 << 2)
+#define CMN_RXCAL_OVRD			(0xd1 << 2)
+#define CMN_TXPUCAL_CTRL		(0xe0 << 2)
+#define CMN_TXPUCAL_OVRD		(0xe1 << 2)
+#define CMN_TXPDCAL_OVRD		(0xf1 << 2)
+#define CMN_DIAG_PLL0_FBH_OVRD		(0x1c0 << 2)
+#define CMN_DIAG_PLL0_FBL_OVRD		(0x1c1 << 2)
+#define CMN_DIAG_PLL0_OVRD		(0x1c2 << 2)
+#define CMN_DIAG_PLL0_V2I_TUNE		(0x1c5 << 2)
+#define CMN_DIAG_PLL0_CP_TUNE		(0x1c6 << 2)
+#define CMN_DIAG_PLL0_LF_PROG		(0x1c7 << 2)
+#define CMN_DIAG_PLL1_FBH_OVRD		(0x1d0 << 2)
+#define CMN_DIAG_PLL1_FBL_OVRD		(0x1d1 << 2)
+#define CMN_DIAG_PLL1_OVRD		(0x1d2 << 2)
+#define CMN_DIAG_PLL1_V2I_TUNE		(0x1d5 << 2)
+#define CMN_DIAG_PLL1_CP_TUNE		(0x1d6 << 2)
+#define CMN_DIAG_PLL1_LF_PROG		(0x1d7 << 2)
+#define CMN_DIAG_PLL1_PTATIS_TUNE1	(0x1d8 << 2)
+#define CMN_DIAG_PLL1_PTATIS_TUNE2	(0x1d9 << 2)
+#define CMN_DIAG_PLL1_INCLK_CTRL	(0x1da << 2)
+#define CMN_DIAG_HSCLK_SEL		(0x1e0 << 2)
+
+#define XCVR_PSM_RCTRL(n)		((0x4001 | ((n) << 9)) << 2)
+#define XCVR_PSM_CAL_TMR(n)		((0x4002 | ((n) << 9)) << 2)
+#define XCVR_PSM_A0IN_TMR(n)		((0x4003 | ((n) << 9)) << 2)
+#define TX_TXCC_CAL_SCLR_MULT(n)	((0x4047 | ((n) << 9)) << 2)
+#define TX_TXCC_CPOST_MULT_00(n)	((0x404c | ((n) << 9)) << 2)
+#define TX_TXCC_CPOST_MULT_01(n)	((0x404d | ((n) << 9)) << 2)
+#define TX_TXCC_CPOST_MULT_10(n)	((0x404e | ((n) << 9)) << 2)
+#define TX_TXCC_CPOST_MULT_11(n)	((0x404f | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_000(n)	((0x4050 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_001(n)	((0x4051 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_010(n)	((0x4052 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_011(n)	((0x4053 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_100(n)	((0x4054 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_101(n)	((0x4055 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_110(n)	((0x4056 | ((n) << 9)) << 2)
+#define TX_TXCC_MGNFS_MULT_111(n)	((0x4057 | ((n) << 9)) << 2)
+#define XCVR_DIAG_PLLDRC_CTRL(n)	((0x40e0 | ((n) << 9)) << 2)
+#define XCVR_DIAG_BIDI_CTRL(n)		((0x40e8 | ((n) << 9)) << 2)
+#define XCVR_DIAG_LANE_FCM_EN_MGN(n)	((0x40f2 | ((n) << 9)) << 2)
+#define TX_PSC_A0(n)			((0x4100 | ((n) << 9)) << 2)
+#define TX_PSC_A1(n)			((0x4101 | ((n) << 9)) << 2)
+#define TX_PSC_A2(n)			((0x4102 | ((n) << 9)) << 2)
+#define TX_PSC_A3(n)			((0x4103 | ((n) << 9)) << 2)
+#define TX_RCVDET_CTRL(n)		((0x4120 | ((n) << 9)) << 2)
+#define TX_RCVDET_EN_TMR(n)		((0x4122 | ((n) << 9)) << 2)
+#define TX_RCVDET_ST_TMR(n)		((0x4123 | ((n) << 9)) << 2)
+#define TX_DIAG_TX_DRV(n)		((0x41e1 | ((n) << 9)) << 2)
+#define TX_DIAG_BGREF_PREDRV_DELAY	(0x41e7 << 2)
+#define TX_ANA_CTRL_REG_1		(0x5020 << 2)
+#define TX_ANA_CTRL_REG_2		(0x5021 << 2)
+#define TXDA_COEFF_CALC_CTRL		(0x5022 << 2)
+#define TX_DIG_CTRL_REG_2		(0x5024 << 2)
+#define TXDA_CYA_AUXDA_CYA		(0x5025 << 2)
+#define TX_ANA_CTRL_REG_3		(0x5026 << 2)
+#define TX_ANA_CTRL_REG_4		(0x5027 << 2)
+#define TX_ANA_CTRL_REG_5		(0x5029 << 2)
+
+#define RX_PSC_A0(n)			((0x8000 | ((n) << 9)) << 2)
+#define RX_PSC_A1(n)			((0x8001 | ((n) << 9)) << 2)
+#define RX_PSC_A2(n)			((0x8002 | ((n) << 9)) << 2)
+#define RX_PSC_A3(n)			((0x8003 | ((n) << 9)) << 2)
+#define RX_PSC_CAL(n)			((0x8006 | ((n) << 9)) << 2)
+#define RX_PSC_RDY(n)			((0x8007 | ((n) << 9)) << 2)
+#define RX_IQPI_ILL_CAL_OVRD		(0x8023 << 2)
+#define RX_EPI_ILL_CAL_OVRD		(0x8033 << 2)
+#define RX_SDCAL0_OVRD			(0x8041 << 2)
+#define RX_SDCAL1_OVRD			(0x8049 << 2)
+#define RX_SLC_INIT			(0x806d << 2)
+#define RX_SLC_RUN			(0x806e << 2)
+#define RX_CDRLF_CNFG2			(0x8081 << 2)
+#define RX_SIGDET_HL_FILT_TMR(n)	((0x8090 | ((n) << 9)) << 2)
+#define RX_SLC_IOP0_OVRD		(0x8101 << 2)
+#define RX_SLC_IOP1_OVRD		(0x8105 << 2)
+#define RX_SLC_QOP0_OVRD		(0x8109 << 2)
+#define RX_SLC_QOP1_OVRD		(0x810d << 2)
+#define RX_SLC_EOP0_OVRD		(0x8111 << 2)
+#define RX_SLC_EOP1_OVRD		(0x8115 << 2)
+#define RX_SLC_ION0_OVRD		(0x8119 << 2)
+#define RX_SLC_ION1_OVRD		(0x811d << 2)
+#define RX_SLC_QON0_OVRD		(0x8121 << 2)
+#define RX_SLC_QON1_OVRD		(0x8125 << 2)
+#define RX_SLC_EON0_OVRD		(0x8129 << 2)
+#define RX_SLC_EON1_OVRD		(0x812d << 2)
+#define RX_SLC_IEP0_OVRD		(0x8131 << 2)
+#define RX_SLC_IEP1_OVRD		(0x8135 << 2)
+#define RX_SLC_QEP0_OVRD		(0x8139 << 2)
+#define RX_SLC_QEP1_OVRD		(0x813d << 2)
+#define RX_SLC_EEP0_OVRD		(0x8141 << 2)
+#define RX_SLC_EEP1_OVRD		(0x8145 << 2)
+#define RX_SLC_IEN0_OVRD		(0x8149 << 2)
+#define RX_SLC_IEN1_OVRD		(0x814d << 2)
+#define RX_SLC_QEN0_OVRD		(0x8151 << 2)
+#define RX_SLC_QEN1_OVRD		(0x8155 << 2)
+#define RX_SLC_EEN0_OVRD		(0x8159 << 2)
+#define RX_SLC_EEN1_OVRD		(0x815d << 2)
+#define RX_REE_CTRL_DATA_MASK(n)	((0x81bb | ((n) << 9)) << 2)
+#define RX_DIAG_SIGDET_TUNE(n)		((0x81dc | ((n) << 9)) << 2)
+#define RX_DIAG_SC2C_DELAY		(0x81e1 << 2)
+
+#define PMA_LANE_CFG			(0xc000 << 2)
+#define PIPE_CMN_CTRL1			(0xc001 << 2)
+#define PIPE_CMN_CTRL2			(0xc002 << 2)
+#define PIPE_COM_LOCK_CFG1		(0xc003 << 2)
+#define PIPE_COM_LOCK_CFG2		(0xc004 << 2)
+#define PIPE_RCV_DET_INH		(0xc005 << 2)
+#define DP_MODE_CTL			(0xc008 << 2)
+#define DP_CLK_CTL			(0xc009 << 2)
+#define STS				(0xc00F << 2)
+#define PHY_ISO_CMN_CTRL		(0xc010 << 2)
+#define PHY_DP_TX_CTL			(0xc408 << 2)
+#define PMA_CMN_CTRL1			(0xc800 << 2)
+#define PHY_PMA_ISO_CMN_CTRL		(0xc810 << 2)
+#define PHY_ISOLATION_CTRL		(0xc81f << 2)
+#define PHY_PMA_ISO_XCVR_CTRL(n)	((0xcc11 | ((n) << 6)) << 2)
+#define PHY_PMA_ISO_LINK_MODE(n)	((0xcc12 | ((n) << 6)) << 2)
+#define PHY_PMA_ISO_PWRST_CTRL(n)	((0xcc13 | ((n) << 6)) << 2)
+#define PHY_PMA_ISO_TX_DATA_LO(n)	((0xcc14 | ((n) << 6)) << 2)
+#define PHY_PMA_ISO_TX_DATA_HI(n)	((0xcc15 | ((n) << 6)) << 2)
+#define PHY_PMA_ISO_RX_DATA_LO(n)	((0xcc16 | ((n) << 6)) << 2)
+#define PHY_PMA_ISO_RX_DATA_HI(n)	((0xcc17 | ((n) << 6)) << 2)
+#define TX_BIST_CTRL(n)			((0x4140 | ((n) << 9)) << 2)
+#define TX_BIST_UDDWR(n)		((0x4141 | ((n) << 9)) << 2)
+
+/*
+ * Selects which PLL clock will be driven on the analog high speed
+ * clock 0: PLL 0 div 1
+ * clock 1: PLL 1 div 2
+ */
+#define CLK_PLL_CONFIG			0X30
+#define CLK_PLL_MASK			0x33
+
+#define CMN_READY			BIT(0)
+
+#define DP_PLL_CLOCK_ENABLE		BIT(2)
+#define DP_PLL_ENABLE			BIT(0)
+#define DP_PLL_DATA_RATE_RBR		((2 << 12) | (4 << 8))
+#define DP_PLL_DATA_RATE_HBR		((2 << 12) | (4 << 8))
+#define DP_PLL_DATA_RATE_HBR2		((1 << 12) | (2 << 8))
+
+#define DP_MODE_A0			BIT(4)
+#define DP_MODE_A2			BIT(6)
+#define DP_MODE_ENTER_A0		0xc101
+#define DP_MODE_ENTER_A2		0xc104
+
+#define PHY_MODE_SET_TIMEOUT		100000
+
+#define PIN_ASSIGN_C_E			0x51d9
+#define PIN_ASSIGN_D_F			0x5100
+
+#define MODE_DISCONNECT			0
+#define MODE_UFP_USB			BIT(0)
+#define MODE_DFP_USB			BIT(1)
+#define MODE_DFP_DP			BIT(2)
+
+struct usb3phy_reg {
+	u32 offset;
+	u32 enable_bit;
+	u32 write_enable;
+};
+
+struct rockchip_usb3phy_port_cfg {
+	struct usb3phy_reg typec_conn_dir;
+	struct usb3phy_reg usb3tousb2_en;
+	struct usb3phy_reg external_psm;
+	struct usb3phy_reg pipe_status;
+};
+
+struct rockchip_typec_phy {
+	struct device *dev;
+	void __iomem *base;
+	struct extcon_dev *extcon;
+	struct regmap *grf_regs;
+	struct clk *clk_core;
+	struct clk *clk_ref;
+	struct reset_control *uphy_rst;
+	struct reset_control *pipe_rst;
+	struct reset_control *tcphy_rst;
+	struct rockchip_usb3phy_port_cfg port_cfgs;
+	/* mutex to protect access to individual PHYs */
+	struct mutex lock;
+
+	bool flip;
+	u8 mode;
+};
+
+struct phy_reg {
+	u16 value;
+	u32 addr;
+};
+
+struct phy_reg usb3_pll_cfg[] = {
+	{ 0xf0,		CMN_PLL0_VCOCAL_INIT },
+	{ 0x18,		CMN_PLL0_VCOCAL_ITER },
+	{ 0xd0,		CMN_PLL0_INTDIV },
+	{ 0x4a4a,	CMN_PLL0_FRACDIV },
+	{ 0x34,		CMN_PLL0_HIGH_THR },
+	{ 0x1ee,	CMN_PLL0_SS_CTRL1 },
+	{ 0x7f03,	CMN_PLL0_SS_CTRL2 },
+	{ 0x20,		CMN_PLL0_DSM_DIAG },
+	{ 0,		CMN_DIAG_PLL0_OVRD },
+	{ 0,		CMN_DIAG_PLL0_FBH_OVRD },
+	{ 0,		CMN_DIAG_PLL0_FBL_OVRD },
+	{ 0x7,		CMN_DIAG_PLL0_V2I_TUNE },
+	{ 0x45,		CMN_DIAG_PLL0_CP_TUNE },
+	{ 0x8,		CMN_DIAG_PLL0_LF_PROG },
+};
+
+struct phy_reg dp_pll_cfg[] = {
+	{ 0xf0,		CMN_PLL1_VCOCAL_INIT },
+	{ 0x18,		CMN_PLL1_VCOCAL_ITER },
+	{ 0x30b9,	CMN_PLL1_VCOCAL_START },
+	{ 0x21c,	CMN_PLL1_INTDIV },
+	{ 0,		CMN_PLL1_FRACDIV },
+	{ 0x5,		CMN_PLL1_HIGH_THR },
+	{ 0x35,		CMN_PLL1_SS_CTRL1 },
+	{ 0x7f1e,	CMN_PLL1_SS_CTRL2 },
+	{ 0x20,		CMN_PLL1_DSM_DIAG },
+	{ 0,		CMN_PLLSM1_USER_DEF_CTRL },
+	{ 0,		CMN_DIAG_PLL1_OVRD },
+	{ 0,		CMN_DIAG_PLL1_FBH_OVRD },
+	{ 0,		CMN_DIAG_PLL1_FBL_OVRD },
+	{ 0x6,		CMN_DIAG_PLL1_V2I_TUNE },
+	{ 0x45,		CMN_DIAG_PLL1_CP_TUNE },
+	{ 0x8,		CMN_DIAG_PLL1_LF_PROG },
+	{ 0x100,	CMN_DIAG_PLL1_PTATIS_TUNE1 },
+	{ 0x7,		CMN_DIAG_PLL1_PTATIS_TUNE2 },
+	{ 0x4,		CMN_DIAG_PLL1_INCLK_CTRL },
+};
+
+static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy)
+{
+	u32 i, rdata;
+
+	/*
+	 * cmn_ref_clk_sel = 3, select the 24Mhz for clk parent
+	 * cmn_psm_clk_dig_div = 2, set the clk division to 2
+	 */
+	writel(0x830, tcphy->base + PMA_CMN_CTRL1);
+	for (i = 0; i < 4; i++) {
+		/*
+		 * The following PHY configuration assumes a 24 MHz reference
+		 * clock.
+		 */
+		writel(0x90, tcphy->base + XCVR_DIAG_LANE_FCM_EN_MGN(i));
+		writel(0x960, tcphy->base + TX_RCVDET_EN_TMR(i));
+		writel(0x30, tcphy->base + TX_RCVDET_ST_TMR(i));
+	}
+
+	rdata = readl(tcphy->base + CMN_DIAG_HSCLK_SEL);
+	rdata &= ~CLK_PLL_MASK;
+	rdata |= CLK_PLL_CONFIG;
+	writel(rdata, tcphy->base + CMN_DIAG_HSCLK_SEL);
+}
+
+static void tcphy_cfg_usb3_pll(struct rockchip_typec_phy *tcphy)
+{
+	u32 i;
+
+	/* load the configuration of PLL0 */
+	for (i = 0; i < ARRAY_SIZE(usb3_pll_cfg); i++)
+		writel(usb3_pll_cfg[i].value,
+		       tcphy->base + usb3_pll_cfg[i].addr);
+}
+
+static void tcphy_cfg_dp_pll(struct rockchip_typec_phy *tcphy)
+{
+	u32 i;
+
+	/* set the default mode to RBR */
+	writel(DP_PLL_CLOCK_ENABLE | DP_PLL_ENABLE | DP_PLL_DATA_RATE_RBR,
+	       tcphy->base + DP_CLK_CTL);
+
+	/* load the configuration of PLL1 */
+	for (i = 0; i < ARRAY_SIZE(dp_pll_cfg); i++)
+		writel(dp_pll_cfg[i].value, tcphy->base + dp_pll_cfg[i].addr);
+}
+
+static void tcphy_tx_usb3_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane)
+{
+	writel(0x7799, tcphy->base + TX_PSC_A0(lane));
+	writel(0x7798, tcphy->base + TX_PSC_A1(lane));
+	writel(0x5098, tcphy->base + TX_PSC_A2(lane));
+	writel(0x5098, tcphy->base + TX_PSC_A3(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_000(lane));
+	writel(0xbf, tcphy->base + XCVR_DIAG_BIDI_CTRL(lane));
+}
+
+static void tcphy_rx_usb3_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane)
+{
+	writel(0xa6fd, tcphy->base + RX_PSC_A0(lane));
+	writel(0xa6fd, tcphy->base + RX_PSC_A1(lane));
+	writel(0xa410, tcphy->base + RX_PSC_A2(lane));
+	writel(0x2410, tcphy->base + RX_PSC_A3(lane));
+	writel(0x23ff, tcphy->base + RX_PSC_CAL(lane));
+	writel(0x13, tcphy->base + RX_SIGDET_HL_FILT_TMR(lane));
+	writel(0x03e7, tcphy->base + RX_REE_CTRL_DATA_MASK(lane));
+	writel(0x1004, tcphy->base + RX_DIAG_SIGDET_TUNE(lane));
+	writel(0x2010, tcphy->base + RX_PSC_RDY(lane));
+	writel(0xfb, tcphy->base + XCVR_DIAG_BIDI_CTRL(lane));
+}
+
+static void tcphy_dp_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane)
+{
+	u16 rdata;
+
+	writel(0xbefc, tcphy->base + XCVR_PSM_RCTRL(lane));
+	writel(0x6799, tcphy->base + TX_PSC_A0(lane));
+	writel(0x6798, tcphy->base + TX_PSC_A1(lane));
+	writel(0x98, tcphy->base + TX_PSC_A2(lane));
+	writel(0x98, tcphy->base + TX_PSC_A3(lane));
+
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_000(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_001(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_010(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_011(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_100(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_101(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_110(lane));
+	writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_111(lane));
+	writel(0, tcphy->base + TX_TXCC_CPOST_MULT_10(lane));
+	writel(0, tcphy->base + TX_TXCC_CPOST_MULT_01(lane));
+	writel(0, tcphy->base + TX_TXCC_CPOST_MULT_00(lane));
+	writel(0, tcphy->base + TX_TXCC_CPOST_MULT_11(lane));
+
+	writel(0x128, tcphy->base + TX_TXCC_CAL_SCLR_MULT(lane));
+	writel(0x400, tcphy->base + TX_DIAG_TX_DRV(lane));
+
+	rdata = readl(tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane));
+	rdata = (rdata & 0x8fff) | 0x6000;
+	writel(rdata, tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane));
+}
+
+static inline int property_enable(struct rockchip_typec_phy *tcphy,
+				  const struct usb3phy_reg *reg, bool en)
+{
+	u32 mask = 1 << reg->write_enable;
+	u32 val = en << reg->enable_bit;
+
+	return regmap_write(tcphy->grf_regs, reg->offset, val | mask);
+}
+
+static void tcphy_dp_aux_calibration(struct rockchip_typec_phy *tcphy)
+{
+	u16 rdata, rdata2, val;
+
+	/* disable txda_cal_latch_en for rewrite the calibration values */
+	rdata = readl(tcphy->base + TX_ANA_CTRL_REG_1);
+	val = rdata & 0xdfff;
+	writel(val, tcphy->base + TX_ANA_CTRL_REG_1);
+
+	/*
+	 * read a resistor calibration code from CMN_TXPUCAL_CTRL[6:0] and
+	 * write it to TX_DIG_CTRL_REG_2[6:0], and delay 1ms to make sure it
+	 * works.
+	 */
+	rdata = readl(tcphy->base + TX_DIG_CTRL_REG_2);
+	rdata = rdata & 0xffc0;
+
+	rdata2 = readl(tcphy->base + CMN_TXPUCAL_CTRL);
+	rdata2 = rdata2 & 0x3f;
+
+	val = rdata | rdata2;
+	writel(val, tcphy->base + TX_DIG_CTRL_REG_2);
+	usleep_range(1000, 1050);
+
+	/*
+	 * Enable signal for latch that sample and holds calibration values.
+	 * Activate this signal for 1 clock cycle to sample new calibration
+	 * values.
+	 */
+	rdata = readl(tcphy->base + TX_ANA_CTRL_REG_1);
+	val = rdata | 0x2000;
+	writel(val, tcphy->base + TX_ANA_CTRL_REG_1);
+	usleep_range(150, 200);
+
+	/* set TX Voltage Level and TX Deemphasis to 0 */
+	writel(0, tcphy->base + PHY_DP_TX_CTL);
+	/* re-enable decap */
+	writel(0x100, tcphy->base + TX_ANA_CTRL_REG_2);
+	writel(0x300, tcphy->base + TX_ANA_CTRL_REG_2);
+	writel(0x2008, tcphy->base + TX_ANA_CTRL_REG_1);
+	writel(0x2018, tcphy->base + TX_ANA_CTRL_REG_1);
+
+	writel(0, tcphy->base + TX_ANA_CTRL_REG_5);
+
+	/*
+	 * Programs txda_drv_ldo_prog[15:0], Sets driver LDO
+	 * voltage 16'h1001 for DP-AUX-TX and RX
+	 */
+	writel(0x1001, tcphy->base + TX_ANA_CTRL_REG_4);
+
+	/* re-enables Bandgap reference for LDO */
+	writel(0x2098, tcphy->base + TX_ANA_CTRL_REG_1);
+	writel(0x2198, tcphy->base + TX_ANA_CTRL_REG_1);
+
+	/*
+	 * re-enables the transmitter pre-driver, driver data selection MUX,
+	 * and receiver detect circuits.
+	 */
+	writel(0x301, tcphy->base + TX_ANA_CTRL_REG_2);
+	writel(0x303, tcphy->base + TX_ANA_CTRL_REG_2);
+
+	/*
+	 * BIT 12: Controls auxda_polarity, which selects the polarity of the
+	 * xcvr:
+	 * 1, Reverses the polarity (If TYPEC, Pulls ups aux_p and pull
+	 * down aux_m)
+	 * 0, Normal polarity (if TYPE_C, pulls up aux_m and pulls down
+	 * aux_p)
+	 */
+	val = 0xa078;
+	if (!tcphy->flip)
+		val |= BIT(12);
+	writel(val, tcphy->base + TX_ANA_CTRL_REG_1);
+
+	writel(0, tcphy->base + TX_ANA_CTRL_REG_3);
+	writel(0, tcphy->base + TX_ANA_CTRL_REG_4);
+	writel(0, tcphy->base + TX_ANA_CTRL_REG_5);
+
+	/*
+	 * Controls low_power_swing_en, set the voltage swing of the driver
+	 * to 400mv. The values	below are peak to peak (differential) values.
+	 */
+	writel(4, tcphy->base + TXDA_COEFF_CALC_CTRL);
+	writel(0, tcphy->base + TXDA_CYA_AUXDA_CYA);
+
+	/* Controls tx_high_z_tm_en */
+	val = readl(tcphy->base + TX_DIG_CTRL_REG_2);
+	val |= BIT(15);
+	writel(val, tcphy->base + TX_DIG_CTRL_REG_2);
+}
+
+static int tcphy_phy_init(struct rockchip_typec_phy *tcphy, u8 mode)
+{
+	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+	int ret, i;
+	u32 val;
+
+	ret = clk_prepare_enable(tcphy->clk_core);
+	if (ret) {
+		dev_err(tcphy->dev, "Failed to prepare_enable core clock\n");
+		return ret;
+	}
+
+	ret = clk_prepare_enable(tcphy->clk_ref);
+	if (ret) {
+		dev_err(tcphy->dev, "Failed to prepare_enable ref clock\n");
+		goto err_clk_core;
+	}
+
+	reset_control_deassert(tcphy->tcphy_rst);
+
+	property_enable(tcphy, &cfg->typec_conn_dir, tcphy->flip);
+
+	tcphy_cfg_24m(tcphy);
+
+	if (mode == MODE_DFP_DP) {
+		tcphy_cfg_dp_pll(tcphy);
+		for (i = 0; i < 4; i++)
+			tcphy_dp_cfg_lane(tcphy, i);
+
+		writel(PIN_ASSIGN_C_E, tcphy->base + PMA_LANE_CFG);
+	} else {
+		tcphy_cfg_usb3_pll(tcphy);
+		tcphy_cfg_dp_pll(tcphy);
+		if (tcphy->flip) {
+			tcphy_tx_usb3_cfg_lane(tcphy, 3);
+			tcphy_rx_usb3_cfg_lane(tcphy, 2);
+			tcphy_dp_cfg_lane(tcphy, 0);
+			tcphy_dp_cfg_lane(tcphy, 1);
+		} else {
+			tcphy_tx_usb3_cfg_lane(tcphy, 0);
+			tcphy_rx_usb3_cfg_lane(tcphy, 1);
+			tcphy_dp_cfg_lane(tcphy, 2);
+			tcphy_dp_cfg_lane(tcphy, 3);
+		}
+
+		writel(PIN_ASSIGN_D_F, tcphy->base + PMA_LANE_CFG);
+	}
+
+	writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL);
+
+	reset_control_deassert(tcphy->uphy_rst);
+
+	ret = readx_poll_timeout(readl, tcphy->base + PMA_CMN_CTRL1,
+				 val, val & CMN_READY, 10,
+				 PHY_MODE_SET_TIMEOUT);
+	if (ret < 0) {
+		dev_err(tcphy->dev, "wait pma ready timeout\n");
+		ret = -ETIMEDOUT;
+		goto err_wait_pma;
+	}
+
+	reset_control_deassert(tcphy->pipe_rst);
+
+	return 0;
+
+err_wait_pma:
+	reset_control_assert(tcphy->uphy_rst);
+	reset_control_assert(tcphy->tcphy_rst);
+	clk_disable_unprepare(tcphy->clk_ref);
+err_clk_core:
+	clk_disable_unprepare(tcphy->clk_core);
+	return ret;
+}
+
+static void tcphy_phy_deinit(struct rockchip_typec_phy *tcphy)
+{
+	reset_control_assert(tcphy->tcphy_rst);
+	reset_control_assert(tcphy->uphy_rst);
+	reset_control_assert(tcphy->pipe_rst);
+	clk_disable_unprepare(tcphy->clk_core);
+	clk_disable_unprepare(tcphy->clk_ref);
+}
+
+static int tcphy_get_mode(struct rockchip_typec_phy *tcphy)
+{
+	struct extcon_dev *edev = tcphy->extcon;
+	union extcon_property_value property;
+	unsigned int id;
+	bool dfp, ufp, dp;
+	u8 mode;
+	int ret;
+
+	ufp = extcon_get_state(edev, EXTCON_USB);
+	dfp = extcon_get_state(edev, EXTCON_USB_HOST);
+	dp = extcon_get_state(edev, EXTCON_DISP_DP);
+
+	mode = MODE_DFP_USB;
+	id = EXTCON_USB_HOST;
+
+	if (ufp) {
+		mode = MODE_UFP_USB;
+		id = EXTCON_USB;
+	} else if (dp) {
+		mode = MODE_DFP_DP;
+		id = EXTCON_DISP_DP;
+
+		ret = extcon_get_property(edev, id, EXTCON_PROP_USB_SS,
+					  &property);
+		if (ret) {
+			dev_err(tcphy->dev, "get superspeed property failed\n");
+			return ret;
+		}
+
+		if (property.intval)
+			mode |= MODE_DFP_USB;
+	}
+
+	ret = extcon_get_property(edev, id, EXTCON_PROP_USB_TYPEC_POLARITY,
+				  &property);
+	if (ret) {
+		dev_err(tcphy->dev, "get polarity property failed\n");
+		return ret;
+	}
+
+	tcphy->flip = property.intval ? 1 : 0;
+
+	return mode;
+}
+
+static int rockchip_usb3_phy_power_on(struct phy *phy)
+{
+	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
+	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+	const struct usb3phy_reg *reg = &cfg->pipe_status;
+	int timeout, new_mode, ret = 0;
+	u32 val;
+
+	mutex_lock(&tcphy->lock);
+
+	new_mode = tcphy_get_mode(tcphy);
+	if (new_mode < 0) {
+		ret = new_mode;
+		goto unlock_ret;
+	}
+
+	/* DP-only mode; fall back to USB2 */
+	if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB)))
+		goto unlock_ret;
+
+	if (tcphy->mode == new_mode)
+		goto unlock_ret;
+
+	if (tcphy->mode == MODE_DISCONNECT)
+		tcphy_phy_init(tcphy, new_mode);
+
+	/* wait TCPHY for pipe ready */
+	for (timeout = 0; timeout < 100; timeout++) {
+		regmap_read(tcphy->grf_regs, reg->offset, &val);
+		if (!(val & BIT(reg->enable_bit))) {
+			tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB);
+			goto unlock_ret;
+		}
+		usleep_range(10, 20);
+	}
+
+	if (tcphy->mode == MODE_DISCONNECT)
+		tcphy_phy_deinit(tcphy);
+
+	ret = -ETIMEDOUT;
+
+unlock_ret:
+	mutex_unlock(&tcphy->lock);
+	return ret;
+}
+
+static int rockchip_usb3_phy_power_off(struct phy *phy)
+{
+	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
+
+	mutex_lock(&tcphy->lock);
+
+	if (tcphy->mode == MODE_DISCONNECT)
+		goto unlock;
+
+	tcphy->mode &= ~(MODE_UFP_USB | MODE_DFP_USB);
+	if (tcphy->mode == MODE_DISCONNECT)
+		tcphy_phy_deinit(tcphy);
+
+unlock:
+	mutex_unlock(&tcphy->lock);
+	return 0;
+}
+
+static const struct phy_ops rockchip_usb3_phy_ops = {
+	.power_on	= rockchip_usb3_phy_power_on,
+	.power_off	= rockchip_usb3_phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+static int rockchip_dp_phy_power_on(struct phy *phy)
+{
+	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
+	int new_mode, ret = 0;
+	u32 val;
+
+	mutex_lock(&tcphy->lock);
+
+	new_mode = tcphy_get_mode(tcphy);
+	if (new_mode < 0) {
+		ret = new_mode;
+		goto unlock_ret;
+	}
+
+	if (!(new_mode & MODE_DFP_DP)) {
+		ret = -ENODEV;
+		goto unlock_ret;
+	}
+
+	if (tcphy->mode == new_mode)
+		goto unlock_ret;
+
+	/*
+	 * If the PHY has been power on, but the mode is not DP only mode,
+	 * re-init the PHY for setting all of 4 lanes to DP.
+	 */
+	if (new_mode == MODE_DFP_DP && tcphy->mode != MODE_DISCONNECT) {
+		tcphy_phy_deinit(tcphy);
+		tcphy_phy_init(tcphy, new_mode);
+	} else if (tcphy->mode == MODE_DISCONNECT) {
+		tcphy_phy_init(tcphy, new_mode);
+	}
+
+	ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL,
+				 val, val & DP_MODE_A2, 1000,
+				 PHY_MODE_SET_TIMEOUT);
+	if (ret < 0) {
+		dev_err(tcphy->dev, "failed to wait TCPHY enter A2\n");
+		goto power_on_finish;
+	}
+
+	tcphy_dp_aux_calibration(tcphy);
+
+	writel(DP_MODE_ENTER_A0, tcphy->base + DP_MODE_CTL);
+
+	ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL,
+				 val, val & DP_MODE_A0, 1000,
+				 PHY_MODE_SET_TIMEOUT);
+	if (ret < 0) {
+		writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL);
+		dev_err(tcphy->dev, "failed to wait TCPHY enter A0\n");
+		goto power_on_finish;
+	}
+
+	tcphy->mode |= MODE_DFP_DP;
+
+power_on_finish:
+	if (tcphy->mode == MODE_DISCONNECT)
+		tcphy_phy_deinit(tcphy);
+unlock_ret:
+	mutex_unlock(&tcphy->lock);
+	return ret;
+}
+
+static int rockchip_dp_phy_power_off(struct phy *phy)
+{
+	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
+
+	mutex_lock(&tcphy->lock);
+
+	if (tcphy->mode == MODE_DISCONNECT)
+		goto unlock;
+
+	tcphy->mode &= ~MODE_DFP_DP;
+
+	writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL);
+
+	if (tcphy->mode == MODE_DISCONNECT)
+		tcphy_phy_deinit(tcphy);
+
+unlock:
+	mutex_unlock(&tcphy->lock);
+	return 0;
+}
+
+static const struct phy_ops rockchip_dp_phy_ops = {
+	.power_on	= rockchip_dp_phy_power_on,
+	.power_off	= rockchip_dp_phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+static int tcphy_get_param(struct device *dev,
+			   struct usb3phy_reg *reg,
+			   const char *name)
+{
+	u32 buffer[3];
+	int ret;
+
+	ret = of_property_read_u32_array(dev->of_node, name, buffer, 3);
+	if (ret) {
+		dev_err(dev, "Can not parse %s\n", name);
+		return ret;
+	}
+
+	reg->offset = buffer[0];
+	reg->enable_bit = buffer[1];
+	reg->write_enable = buffer[2];
+	return 0;
+}
+
+static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy,
+			  struct device *dev)
+{
+	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+	int ret;
+
+	ret = tcphy_get_param(dev, &cfg->typec_conn_dir,
+			      "rockchip,typec-conn-dir");
+	if (ret)
+		return ret;
+
+	ret = tcphy_get_param(dev, &cfg->usb3tousb2_en,
+			      "rockchip,usb3tousb2-en");
+	if (ret)
+		return ret;
+
+	ret = tcphy_get_param(dev, &cfg->external_psm,
+			      "rockchip,external-psm");
+	if (ret)
+		return ret;
+
+	ret = tcphy_get_param(dev, &cfg->pipe_status,
+			      "rockchip,pipe-status");
+	if (ret)
+		return ret;
+
+	tcphy->grf_regs = syscon_regmap_lookup_by_phandle(dev->of_node,
+							  "rockchip,grf");
+	if (IS_ERR(tcphy->grf_regs)) {
+		dev_err(dev, "could not find grf dt node\n");
+		return PTR_ERR(tcphy->grf_regs);
+	}
+
+	tcphy->clk_core = devm_clk_get(dev, "tcpdcore");
+	if (IS_ERR(tcphy->clk_core)) {
+		dev_err(dev, "could not get uphy core clock\n");
+		return PTR_ERR(tcphy->clk_core);
+	}
+
+	tcphy->clk_ref = devm_clk_get(dev, "tcpdphy-ref");
+	if (IS_ERR(tcphy->clk_ref)) {
+		dev_err(dev, "could not get uphy ref clock\n");
+		return PTR_ERR(tcphy->clk_ref);
+	}
+
+	tcphy->uphy_rst = devm_reset_control_get(dev, "uphy");
+	if (IS_ERR(tcphy->uphy_rst)) {
+		dev_err(dev, "no uphy_rst reset control found\n");
+		return PTR_ERR(tcphy->uphy_rst);
+	}
+
+	tcphy->pipe_rst = devm_reset_control_get(dev, "uphy-pipe");
+	if (IS_ERR(tcphy->pipe_rst)) {
+		dev_err(dev, "no pipe_rst reset control found\n");
+		return PTR_ERR(tcphy->pipe_rst);
+	}
+
+	tcphy->tcphy_rst = devm_reset_control_get(dev, "uphy-tcphy");
+	if (IS_ERR(tcphy->tcphy_rst)) {
+		dev_err(dev, "no tcphy_rst reset control found\n");
+		return PTR_ERR(tcphy->tcphy_rst);
+	}
+
+	return 0;
+}
+
+static void typec_phy_pre_init(struct rockchip_typec_phy *tcphy)
+{
+	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+
+	reset_control_assert(tcphy->tcphy_rst);
+	reset_control_assert(tcphy->uphy_rst);
+	reset_control_assert(tcphy->pipe_rst);
+
+	/* select external psm clock */
+	property_enable(tcphy, &cfg->external_psm, 1);
+	property_enable(tcphy, &cfg->usb3tousb2_en, 0);
+
+	tcphy->mode = MODE_DISCONNECT;
+}
+
+static int rockchip_typec_phy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *child_np;
+	struct rockchip_typec_phy *tcphy;
+	struct phy_provider *phy_provider;
+	struct resource *res;
+	int ret;
+
+	tcphy = devm_kzalloc(dev, sizeof(*tcphy), GFP_KERNEL);
+	if (!tcphy)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	tcphy->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(tcphy->base))
+		return PTR_ERR(tcphy->base);
+
+	ret = tcphy_parse_dt(tcphy, dev);
+	if (ret)
+		return ret;
+
+	tcphy->dev = dev;
+	platform_set_drvdata(pdev, tcphy);
+	mutex_init(&tcphy->lock);
+
+	typec_phy_pre_init(tcphy);
+
+	tcphy->extcon = extcon_get_edev_by_phandle(dev, 0);
+	if (IS_ERR(tcphy->extcon)) {
+		if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER)
+			dev_err(dev, "Invalid or missing extcon\n");
+		return PTR_ERR(tcphy->extcon);
+	}
+
+	pm_runtime_enable(dev);
+
+	for_each_available_child_of_node(np, child_np) {
+		struct phy *phy;
+
+		if (!of_node_cmp(child_np->name, "dp-port"))
+			phy = devm_phy_create(dev, child_np,
+					      &rockchip_dp_phy_ops);
+		else if (!of_node_cmp(child_np->name, "usb3-port"))
+			phy = devm_phy_create(dev, child_np,
+					      &rockchip_usb3_phy_ops);
+		else
+			continue;
+
+		if (IS_ERR(phy)) {
+			dev_err(dev, "failed to create phy: %s\n",
+				child_np->name);
+			return PTR_ERR(phy);
+		}
+
+		phy_set_drvdata(phy, tcphy);
+	}
+
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+	if (IS_ERR(phy_provider)) {
+		dev_err(dev, "Failed to register phy provider\n");
+		return PTR_ERR(phy_provider);
+	}
+
+	return 0;
+}
+
+static int rockchip_typec_phy_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static const struct of_device_id rockchip_typec_phy_dt_ids[] = {
+	{ .compatible = "rockchip,rk3399-typec-phy" },
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, rockchip_typec_phy_dt_ids);
+
+static struct platform_driver rockchip_typec_phy_driver = {
+	.probe		= rockchip_typec_phy_probe,
+	.remove		= rockchip_typec_phy_remove,
+	.driver		= {
+		.name	= "rockchip-typec-phy",
+		.of_match_table = rockchip_typec_phy_dt_ids,
+	},
+};
+
+module_platform_driver(rockchip_typec_phy_driver);
+
+MODULE_AUTHOR("Chris Zhong <[e-mail]>");
+MODULE_AUTHOR("Kever Yang <[e-mail]>");
+MODULE_DESCRIPTION("Rockchip USB TYPE-C PHY driver");
+MODULE_LICENSE("GPL v2");

drivers/phy/phy-rockchip-usb.c

···
 #include <linux/reset.h>
 #include <linux/regmap.h>
 #include <linux/mfd/syscon.h>
+#include <linux/delay.h>
 
 static int enable_usb_uart;
 
···
 	struct clk_hw	clk480m_hw;
 	struct phy	*phy;
 	bool		uart_enabled;
+	struct reset_control *reset;
 };
 
 static int rockchip_usb_phy_power(struct rockchip_usb_phy *phy,
···
 	return clk_prepare_enable(phy->clk480m);
 }
 
+static int rockchip_usb_phy_reset(struct phy *_phy)
+{
+	struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
+
+	if (phy->reset) {
+		reset_control_assert(phy->reset);
+		udelay(10);
+		reset_control_deassert(phy->reset);
+	}
+
+	return 0;
+}
+
 static const struct phy_ops ops = {
 	.power_on	= rockchip_usb_phy_power_on,
 	.power_off	= rockchip_usb_phy_power_off,
+	.reset		= rockchip_usb_phy_reset,
 	.owner		= THIS_MODULE,
 };
 
···
 			child->name);
 		return -EINVAL;
 	}
+
+	rk_phy->reset = of_reset_control_get(child, "phy-reset");
+	if (IS_ERR(rk_phy->reset))
+		rk_phy->reset = NULL;
 
 	rk_phy->reg_offset = reg_offset;
 

drivers/phy/phy-sun4i-usb.c

···
 #include <linux/power_supply.h>
 #include <linux/regulator/consumer.h>
 #include <linux/reset.h>
+#include <linux/spinlock.h>
 #include <linux/usb/of.h>
 #include <linux/workqueue.h>
 
···
 #define REG_PHYCTL_A33			0x10
 #define REG_PHY_UNK_H3			0x20
 
-#define REG_PMU_UNK_H3			0x10
+#define REG_PMU_UNK1			0x10
 
 #define PHYCTL_DATA			BIT(7)
 
···
 	sun6i_a31_phy,
 	sun8i_a33_phy,
 	sun8i_h3_phy,
+	sun50i_a64_phy,
 };
 
 struct sun4i_usb_phy_cfg {
···
 	u32 disc_thresh;
 	u8 phyctl_offset;
 	bool dedicated_clocks;
+	bool enable_pmu_unk1;
 };
 
 struct sun4i_usb_phy_data {
 	void __iomem *base;
 	const struct sun4i_usb_phy_cfg *cfg;
 	enum usb_dr_mode dr_mode;
-	struct mutex mutex;
+	spinlock_t reg_lock; /* guard access to phyctl reg */
 	struct sun4i_usb_phy {
 		struct phy *phy;
 		void __iomem *pmu;
···
 		bool regulator_on;
 		int index;
 	} phys[MAX_PHYS];
-	int first_phy;
 	/* phy0 / otg related variables */
 	struct extcon_dev *extcon;
 	bool phy0_init;
···
 	struct power_supply *vbus_power_supply;
 	struct notifier_block vbus_power_nb;
 	bool vbus_power_nb_registered;
+	bool force_session_end;
 	int id_det_irq;
 	int vbus_det_irq;
 	int id_det;
···
 	struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
 	u32 temp, usbc_bit = BIT(phy->index * 2);
 	void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
+	unsigned long flags;
 	int i;
 
-	mutex_lock(&phy_data->mutex);
+	spin_lock_irqsave(&phy_data->reg_lock, flags);
 
-	if (phy_data->cfg->type == sun8i_a33_phy) {
-		/* A33 needs us to set phyctl to 0 explicitly */
+	if (phy_data->cfg->type == sun8i_a33_phy ||
+	    phy_data->cfg->type == sun50i_a64_phy) {
+		/* A33 or A64 needs us to set phyctl to 0 explicitly */
 		writel(0, phyctl);
 	}
 
···
 
 		data >>= 1;
 	}
-	mutex_unlock(&phy_data->mutex);
+
+	spin_unlock_irqrestore(&phy_data->reg_lock, flags);
 }
 
 static void sun4i_usb_phy_passby(struct sun4i_usb_phy *phy, int enable)
···
 		return ret;
 	}
 
+	if (data->cfg->enable_pmu_unk1) {
+		val = readl(phy->pmu + REG_PMU_UNK1);
+		writel(val & ~2, phy->pmu + REG_PMU_UNK1);
+	}
+
 	if (data->cfg->type == sun8i_h3_phy) {
 		if (phy->index == 0) {
 			val = readl(data->base + REG_PHY_UNK_H3);
 			writel(val & ~1, data->base + REG_PHY_UNK_H3);
 		}
-
-		val = readl(phy->pmu + REG_PMU_UNK_H3);
-		writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
 	} else {
 		/* Enable USB 45 Ohm resistor calibration */
 		if (phy->index == 0)
···
 {
 	switch (data->dr_mode) {
 	case USB_DR_MODE_OTG:
-		return gpiod_get_value_cansleep(data->id_det_gpio);
+		if (data->id_det_gpio)
+			return gpiod_get_value_cansleep(data->id_det_gpio);
+		else
+			return 1; /* Fallback to peripheral mode */
 	case USB_DR_MODE_HOST:
 		return 0;
 	case USB_DR_MODE_PERIPHERAL:
···
 
 	/* For phy0 only turn on Vbus if we don't have an ext. Vbus */
 	if (phy->index == 0 && sun4i_usb_phy0_have_vbus_det(data) &&
-				data->vbus_det)
+				data->vbus_det) {
+		dev_warn(&_phy->dev, "External vbus detected, not enabling our own vbus\n");
 		return 0;
+	}
 
 	ret = regulator_enable(phy->vbus);
 	if (ret)
···
 	return 0;
 }
 
+static int sun4i_usb_phy_set_mode(struct phy *_phy, enum phy_mode mode)
+{
+	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
+	struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
+
+	if (phy->index != 0)
+		return -EINVAL;
+
+	switch (mode) {
+	case PHY_MODE_USB_HOST:
+		data->dr_mode = USB_DR_MODE_HOST;
+		break;
+	case PHY_MODE_USB_DEVICE:
+		data->dr_mode = USB_DR_MODE_PERIPHERAL;
+		break;
+	case PHY_MODE_USB_OTG:
+		data->dr_mode = USB_DR_MODE_OTG;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	dev_info(&_phy->dev, "Changing dr_mode to %d\n", (int)data->dr_mode);
+	data->force_session_end = true;
+	queue_delayed_work(system_wq, &data->detect, 0);
+
+	return 0;
+}
+
 void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled)
 {
 	struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
···
 	.exit		= sun4i_usb_phy_exit,
 	.power_on	= sun4i_usb_phy_power_on,
 	.power_off	= sun4i_usb_phy_power_off,
+	.set_mode	= sun4i_usb_phy_set_mode,
 	.owner		= THIS_MODULE,
 };
 
···
 	struct sun4i_usb_phy_data *data =
 		container_of(work, struct sun4i_usb_phy_data, detect.work);
 	struct phy *phy0 = data->phys[0].phy;
-	int id_det, vbus_det, id_notify = 0, vbus_notify = 0;
+	bool force_session_end, id_notify = false, vbus_notify = false;
+	int id_det, vbus_det;
 
 	if (phy0 == NULL)
 		return;
···
 		return;
 	}
 
+	force_session_end = data->force_session_end;
+	data->force_session_end = false;
+
 	if (id_det != data->id_det) {
-		/*
-		 * When a host cable (id == 0) gets plugged in on systems
-		 * without vbus detection report vbus low for long enough for
-		 * the musb-ip to end the current device session.
-		 */
+		/* id-change, force session end if we've no vbus detection */
 		if (data->dr_mode == USB_DR_MODE_OTG &&
-		    !sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) {
+		    !sun4i_usb_phy0_have_vbus_det(data))
+			force_session_end = true;
+
+		/* When entering host mode (id = 0) force end the session now */
+		if (force_session_end && id_det == 0) {
 			sun4i_usb_phy0_set_vbus_detect(phy0, 0);
 			msleep(200);
 			sun4i_usb_phy0_set_vbus_detect(phy0, 1);
 		}
 		sun4i_usb_phy0_set_id_detect(phy0, id_det);
 		data->id_det = id_det;
-		id_notify = 1;
+		id_notify = true;
 	}
 
 	if (vbus_det != data->vbus_det) {
 		sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det);
 		data->vbus_det = vbus_det;
-		vbus_notify = 1;
+		vbus_notify = true;
 	}
 
 	mutex_unlock(&phy0->mutex);
···
 	if (id_notify) {
 		extcon_set_cable_state_(data->extcon, EXTCON_USB_HOST,
 					!id_det);
-		/*
-		 * When a host cable gets unplugged (id == 1) on systems
-		 * without vbus detection report vbus low for long enough to
-		 * the musb-ip to end the current host session.
-		 */
-		if (data->dr_mode == USB_DR_MODE_OTG &&
-		    !sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) {
+		/* When leaving host mode force end the session here */
+		if (force_session_end && id_det == 1) {
 			mutex_lock(&phy0->mutex);
 			sun4i_usb_phy0_set_vbus_detect(phy0, 0);
 			msleep(1000);
···
 {
 	struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
 
-	if (args->args[0] < data->first_phy ||
-	    args->args[0] >= data->cfg->num_phys)
+	if (args->args[0] >= data->cfg->num_phys)
 		return ERR_PTR(-ENODEV);
 
 	return data->phys[args->args[0]].phy;
···
 	if (!data)
 		return -ENOMEM;
 
-	mutex_init(&data->mutex);
+	spin_lock_init(&data->reg_lock);
 	INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
 	dev_set_drvdata(dev, data);
 	data->cfg = of_device_get_match_data(dev);
···
 	}
 
 	data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0);
-	switch (data->dr_mode) {
-	case USB_DR_MODE_OTG:
-		/* otg without id_det makes no sense, and is not supported */
-		if (!data->id_det_gpio) {
-			dev_err(dev, "usb0_id_det missing or invalid\n");
-			return -ENODEV;
-		}
-		/* fall through */
-	case USB_DR_MODE_HOST:
-	case USB_DR_MODE_PERIPHERAL:
-		data->extcon = devm_extcon_dev_allocate(dev,
-							sun4i_usb_phy0_cable);
-		if (IS_ERR(data->extcon))
-			return PTR_ERR(data->extcon);
 
-		ret = devm_extcon_dev_register(dev, data->extcon);
-		if (ret) {
-			dev_err(dev, "failed to register extcon: %d\n", ret);
-			return ret;
-		}
-		break;
-	default:
-		dev_info(dev, "dr_mode unknown, not registering usb phy0\n");
-		data->first_phy = 1;
+	data->extcon = devm_extcon_dev_allocate(dev, sun4i_usb_phy0_cable);
+	if (IS_ERR(data->extcon))
+		return PTR_ERR(data->extcon);
+
+	ret = devm_extcon_dev_register(dev, data->extcon);
+	if (ret) {
+		dev_err(dev, "failed to register extcon: %d\n", ret);
+		return ret;
 	}
 
-	for (i = data->first_phy; i < data->cfg->num_phys; i++) {
+	for (i = 0; i < data->cfg->num_phys; i++) {
 		struct sun4i_usb_phy *phy = data->phys + i;
 		char name[16];
 
···
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
 	.dedicated_clocks = false,
+	.enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
···
 	.disc_thresh = 2,
 	.phyctl_offset = REG_PHYCTL_A10,
 	.dedicated_clocks = false,
+	.enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
···
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
 	.dedicated_clocks = true,
+	.enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
···
 	.disc_thresh = 2,
 	.phyctl_offset = REG_PHYCTL_A10,
 	.dedicated_clocks = false,
+	.enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
···
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A10,
 	.dedicated_clocks = true,
+	.enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
···
 	.disc_thresh = 3,
 	.phyctl_offset = REG_PHYCTL_A33,
 	.dedicated_clocks = true,
+	.enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
···
 	.type = sun8i_h3_phy,
 	.disc_thresh = 3,
 	.dedicated_clocks = true,
+	.enable_pmu_unk1 = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
+	.num_phys = 2,
+	.type = sun50i_a64_phy,
+	.disc_thresh = 3,
+	.phyctl_offset = REG_PHYCTL_A33,
+	.dedicated_clocks = true,
+	.enable_pmu_unk1 = true,
 };
 
 static const struct of_device_id sun4i_usb_phy_of_match[] = {
···
 	{ .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
 	{ .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
 	{ .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg },
+	{ .compatible = "allwinner,sun50i-a64-usb-phy",
+	  .data = &sun50i_a64_cfg},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);

drivers/phy/phy-twl4030-usb.c

···
 	int			irq;
 	enum musb_vbus_id_status linkstat;
 	bool			vbus_supplied;
+	bool			musb_mailbox_pending;
 
 	struct delayed_work	id_workaround_work;
 };
···
 			  (PHY_CLK_CTRL_CLOCKGATING_EN |
 			   PHY_CLK_CTRL_CLK32K_EN));
 
+	twl4030_i2c_access(twl, 1);
+	twl4030_usb_set_mode(twl, twl->usb_mode);
+	if (twl->usb_mode == T2_USB_MODE_ULPI)
+		twl4030_i2c_access(twl, 0);
+	/*
+	 * According to the TPS65950 TRM, there has to be at least 50ms
+	 * delay between setting POWER_CTRL_OTG_ENAB and enabling charging
+	 * so wait here so that a fully enabled phy can be expected after
+	 * resume
+	 */
+	msleep(50);
 	return 0;
 }
 
···
 
 	dev_dbg(twl->dev, "%s\n", __func__);
 	pm_runtime_get_sync(twl->dev);
-	twl4030_i2c_access(twl, 1);
-	twl4030_usb_set_mode(twl, twl->usb_mode);
-	if (twl->usb_mode == T2_USB_MODE_ULPI)
-		twl4030_i2c_access(twl, 0);
-	twl->linkstat = MUSB_UNKNOWN;
 	schedule_delayed_work(&twl->id_workaround_work, HZ);
 
 	return 0;
···
 			pm_runtime_mark_last_busy(twl->dev);
 			pm_runtime_put_autosuspend(twl->dev);
 		}
+		twl->musb_mailbox_pending = true;
+	}
+	if (twl->musb_mailbox_pending) {
 		err = musb_mailbox(status);
-		if (err)
-			twl->linkstat = MUSB_UNKNOWN;
+		if (!err)
+			twl->musb_mailbox_pending = false;
 	}
 
 	/* don't schedule during sleep - irq works right then */
···
 	twl->irq		= platform_get_irq(pdev, 0);
 	twl->vbus_supplied	= false;
 	twl->linkstat		= MUSB_UNKNOWN;
+	twl->musb_mailbox_pending = false;
 
 	twl->phy.dev		= twl->dev;
 	twl->phy.label		= "twl4030";

drivers/phy/tegra/xusb.c

···
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/phy/phy.h>
+#include <linux/phy/tegra/xusb.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 #include <linux/reset.h>
···
 	return of_find_node_by_name(np, pad->soc->lanes[index].name);
 }
 
-int tegra_xusb_lane_lookup_function(struct tegra_xusb_lane *lane,
+static int
+tegra_xusb_lane_lookup_function(struct tegra_xusb_lane *lane,
 				    const char *function)
 {
 	unsigned int i;

drivers/usb/Kconfig

···
 
 config USB_LED_TRIG
 	bool "USB LED Triggers"
-	depends on LEDS_CLASS && USB_COMMON && LEDS_TRIGGERS
+	depends on LEDS_CLASS && LEDS_TRIGGERS
+	select USB_COMMON
 	help
 	  This option adds LED triggers for USB host and/or gadget activity.
 
 	  Say Y here if you are working on a system with led-class supported
 	  LEDs and you want to use them as activity indicators for USB host or
 	  gadget.
+
+config USB_ULPI_BUS
+	tristate "USB ULPI PHY interface support"
+	select USB_COMMON
+	help
+	  UTMI+ Low Pin Interface (ULPI) is specification for a commonly used
+	  USB 2.0 PHY interface. The ULPI specification defines a standard set
+	  of registers that can be used to detect the vendor and product which
+	  allows ULPI to be handled as a bus. This module is the driver for that
+	  bus.
+
+	  The ULPI interfaces (the buses) are registered by the drivers for USB
+	  controllers which support ULPI register access and have ULPI PHY
+	  attached to them. The ULPI PHY drivers themselves are normal PHY
+	  drivers.
+
+	  ULPI PHYs provide often functions such as ADP sensing/probing (OTG
+	  protocol) and USB charger detection.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called ulpi.
 
 endif # USB_SUPPORT

drivers/usb/atm/cxacru.c

···
 
 	/* instance init */
 	instance = kzalloc(sizeof(*instance), GFP_KERNEL);
-	if (!instance) {
-		usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n");
+	if (!instance)
 		return -ENOMEM;
-	}
 
 	instance->usbatm = usbatm_instance;
 	instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
···
 	}
 	instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!instance->rcv_urb) {
-		usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n");
 		ret = -ENOMEM;
 		goto fail;
 	}
 	instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!instance->snd_urb) {
-		usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n");
 		ret = -ENOMEM;
 		goto fail;
 	}

drivers/usb/atm/speedtch.c

···
 	instance = kzalloc(sizeof(*instance), GFP_KERNEL);
 
 	if (!instance) {
-		usb_err(usbatm, "%s: no memory for instance data!\n", __func__);
 		ret = -ENOMEM;
 		goto fail_release;
 	}

drivers/usb/atm/ueagle-atm.c

···
 		load_XILINX_firmware(sc);
 
 	intr = kmalloc(size, GFP_KERNEL);
-	if (!intr) {
-		uea_err(INS_TO_USBDEV(sc),
-		       "cannot allocate interrupt package\n");
+	if (!intr)
 		goto err0;
-	}
 
 	sc->urb_int = usb_alloc_urb(0, GFP_KERNEL);
-	if (!sc->urb_int) {
-		uea_err(INS_TO_USBDEV(sc), "cannot allocate interrupt URB\n");
+	if (!sc->urb_int)
 		goto err1;
-	}
 
 	usb_fill_int_urb(sc->urb_int, sc->usb_dev,
 			 usb_rcvintpipe(sc->usb_dev, UEA_INTR_PIPE),
···
 	}
 
 	sc = kzalloc(sizeof(struct uea_softc), GFP_KERNEL);
-	if (!sc) {
-		uea_err(usb, "uea_init: not enough memory !\n");
+	if (!sc)
 		return -ENOMEM;
-	}
 
 	sc->usb_dev = usb;
 	usbatm->driver_data = sc;

drivers/usb/atm/usbatm.c

···
 
 	new = kzalloc(sizeof(struct usbatm_vcc_data), GFP_KERNEL);
 	if (!new) {
-		atm_err(instance, "%s: no memory for vcc_data!\n", __func__);
 		ret = -ENOMEM;
 		goto fail;
 	}
···
 
 	/* instance init */
 	instance = kzalloc(sizeof(*instance) + sizeof(struct urb *) * (num_rcv_urbs + num_snd_urbs), GFP_KERNEL);
-	if (!instance) {
-		dev_err(dev, "%s: no memory for instance data!\n", __func__);
+	if (!instance)
 		return -ENOMEM;
-	}
 
 	/* public fields */
 
···
 
 		urb = usb_alloc_urb(iso_packets, GFP_KERNEL);
 		if (!urb) {
-			dev_err(dev, "%s: no memory for urb %d!\n", __func__, i);
 			error = -ENOMEM;
 			goto fail_unbind;
 		}
···
 		/* zero the tx padding to avoid leaking information */
 		buffer = kzalloc(channel->buf_size, GFP_KERNEL);
 		if (!buffer) {
-			dev_err(dev, "%s: no memory for buffer %d!\n", __func__, i);
 			error = -ENOMEM;
 			goto fail_unbind;
 		}
···
 	instance->cell_buf = kmalloc(instance->rx_channel.stride, GFP_KERNEL);
 
 	if (!instance->cell_buf) {
-		dev_err(dev, "%s: no memory for cell buffer!\n", __func__);
 		error = -ENOMEM;
 		goto fail_unbind;
 	}

drivers/usb/chipidea/ci_hdrc_imx.c

···
 	if (of_find_property(np, "disable-over-current", NULL))
 		data->disable_oc = 1;
 
+	if (of_find_property(np, "over-current-active-high", NULL))
+		data->oc_polarity = 1;
+
 	if (of_find_property(np, "external-vbus-divider", NULL))
 		data->evdo = 1;
 

drivers/usb/chipidea/ci_hdrc_imx.h

···
 	int index;
 
 	unsigned int disable_oc:1; /* over current detect disabled */
+	unsigned int oc_polarity:1; /* over current polarity if oc enabled */
 	unsigned int evdo:1; /* set external vbus divider option */
 };
 

drivers/usb/chipidea/host.c

···
 {
 	struct device *dev = hcd->self.controller;
 	struct ci_hdrc *ci = dev_get_drvdata(dev);
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	int ret;
 
 	ret = ehci_setup(hcd);
 	if (ret)
 		return ret;
+
+	ehci->need_io_watchdog = 0;
 
 	ci_platform_configure(ci);
 

drivers/usb/chipidea/udc.c

···
  */
 static inline int hw_ep_bit(int num, int dir)
 {
-	return num + (dir ? 16 : 0);
+	return num + ((dir == TX) ? 16 : 0);
 }
 
 static inline int ep_to_bit(struct ci_hdrc *ci, int n)
···
  */
 static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir)
 {
-	hw_ep_flush(ci, num, dir);
 	hw_write(ci, OP_ENDPTCTRL + num,
-		 dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
+		 (dir == TX) ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
 	return 0;
 }
 
···
 {
 	u32 mask, data;
 
-	if (dir) {
+	if (dir == TX) {
 		mask  = ENDPTCTRL_TXT;  /* type    */
 		data  = type << __ffs(mask);
 
···
  */
 static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir)
 {
-	u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
+	u32 mask = (dir == TX) ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
 
 	return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
 }
···
 static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
 {
 	int n = hw_ep_bit(num, dir);
+
+	/* Synchronize before ep prime */
+	wmb();
 
 	if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
 		return -EAGAIN;
···
 
 	do {
 		enum ci_hw_regs reg = OP_ENDPTCTRL + num;
-		u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
-		u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
+		u32 mask_xs = (dir == TX) ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
+		u32 mask_xr = (dir == TX) ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
 
 		/* data toggle - reserved for EP0 but it's in ESS */
 		hw_write(ci, reg, mask_xs|mask_xr,
···
 	if (node == NULL)
 		return -ENOMEM;
 
-	node->ptr = dma_pool_zalloc(hwep->td_pool, GFP_ATOMIC,
-				   &node->dma);
+	node->ptr = dma_pool_zalloc(hwep->td_pool, GFP_ATOMIC, &node->dma);
 	if (node->ptr == NULL) {
 		kfree(node);
 		return -ENOMEM;
···
 		hwep->qh.ptr->cap |= mul << __ffs(QH_MULT);
 	}
 
-	wmb();   /* synchronize before ep prime */
-
 	ret = hw_ep_prime(ci, hwep->num, hwep->dir,
 			   hwep->type == USB_ENDPOINT_XFER_CONTROL);
 done:
···
 	hwep->qh.ptr->td.next = node->dma;
 	hwep->qh.ptr->td.token &=
 		cpu_to_le32(~(TD_STATUS_HALTED | TD_STATUS_ACTIVE));
-
-	/* Synchronize before ep prime */
-	wmb();
 
 	return hw_ep_prime(ci, hwep->num, hwep->dir,
 				hwep->type == USB_ENDPOINT_XFER_CONTROL);
···
 		}
 
 		if (remaining_length) {
-			if (hwep->dir) {
+			if (hwep->dir == TX) {
 				hwreq->req.status = -EPROTO;
 				break;
 			}
···
 			if (req.wLength != 0)
 				break;
 			num  = le16_to_cpu(req.wIndex);
-			dir = num & USB_ENDPOINT_DIR_MASK;
+			dir = (num & USB_ENDPOINT_DIR_MASK) ? TX : RX;
 			num &= USB_ENDPOINT_NUMBER_MASK;
-			if (dir) /* TX */
+			if (dir == TX)
 				num += ci->hw_ep_max / 2;
 			if (!ci->ci_hw_ep[num].wedge) {
 				spin_unlock(&ci->lock);
···
 			if (req.wLength != 0)
 				break;
 			num  = le16_to_cpu(req.wIndex);
-			dir = num & USB_ENDPOINT_DIR_MASK;
+			dir = (num & USB_ENDPOINT_DIR_MASK) ? TX : RX;
 			num &= USB_ENDPOINT_NUMBER_MASK;
-			if (dir) /* TX */
+			if (dir == TX)
 				num += ci->hw_ep_max / 2;
 
 			spin_unlock(&ci->lock);
···
 			usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0);
 
 			INIT_LIST_HEAD(&hwep->qh.queue);
-			hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
-						     &hwep->qh.dma);
+			hwep->qh.ptr = dma_pool_zalloc(ci->qh_pool, GFP_KERNEL,
+						       &hwep->qh.dma);
 			if (hwep->qh.ptr == NULL)
 				retval = -ENOMEM;
-			else
-				memset(hwep->qh.ptr, 0, sizeof(*hwep->qh.ptr));
 
 			/*
 			 * set up shorthands for ep0 out and in endpoints,
···
 	if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_DC))
 		return -ENXIO;
 
-	rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL);
+	rdrv = devm_kzalloc(ci->dev, sizeof(*rdrv), GFP_KERNEL);
 	if (!rdrv)
 		return -ENOMEM;
 

drivers/usb/chipidea/usbmisc_imx.c

···
 
 #define MX6_BM_NON_BURST_SETTING	BIT(1)
 #define MX6_BM_OVER_CUR_DIS		BIT(7)
+#define MX6_BM_OVER_CUR_POLARITY	BIT(8)
 #define MX6_BM_WAKEUP_ENABLE		BIT(10)
 #define MX6_BM_ID_WAKEUP		BIT(16)
 #define MX6_BM_VBUS_WAKEUP		BIT(17)
···
 
 	spin_lock_irqsave(&usbmisc->lock, flags);
 
+	reg = readl(usbmisc->base + data->index * 4);
 	if (data->disable_oc) {
-		reg = readl(usbmisc->base + data->index * 4);
-		writel(reg | MX6_BM_OVER_CUR_DIS,
-			usbmisc->base + data->index * 4);
+		reg |= MX6_BM_OVER_CUR_DIS;
+	} else if (data->oc_polarity == 1) {
+		/* High active */
+		reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
 	}
+	writel(reg, usbmisc->base + data->index * 4);
 
 	/* SoC non-burst setting */
 	reg = readl(usbmisc->base + data->index * 4);
···
 		return -EINVAL;
 
 	spin_lock_irqsave(&usbmisc->lock, flags);
+	reg = readl(usbmisc->base);
 	if (data->disable_oc) {
-		reg = readl(usbmisc->base);
-		writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base);
+		reg |= MX6_BM_OVER_CUR_DIS;
+	} else if (data->oc_polarity == 1) {
+		/* High active */
+		reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
 	}
+	writel(reg, usbmisc->base);
 
 	reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
 	reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
···
 	{
 		.compatible = "fsl,imx6ul-usbmisc",
 		.data = &imx6sx_usbmisc_ops,
+	},
+	{
+		.compatible = "fsl,imx7d-usbmisc",
+		.data = &imx7d_usbmisc_ops,
 	},
 	{ /* sentinel */ }
 };

drivers/usb/class/cdc-acm.c

···
 	if (!test_and_clear_bit(index, &acm->read_urbs_free))
 		return 0;
 
-	dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
-
 	res = usb_submit_urb(acm->read_urbs[index], mem_flags);
 	if (res) {
 		if (res != -EPERM) {
 			dev_err(&acm->data->dev,
-					"%s - usb_submit_urb failed: %d\n",
-					__func__, res);
+					"urb %d failed submission with %d\n",
+					index, res);
 		}
 		set_bit(index, &acm->read_urbs_free);
 		return res;
+	} else {
+		dev_vdbg(&acm->data->dev, "submitted urb %d\n", index);
 	}
 
 	return 0;
···
 	unsigned long flags;
 	int status = urb->status;
 
-	dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
-					rb->index, urb->actual_length);
+	dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n",
+					rb->index, urb->actual_length,
+					status);
 
 	if (!acm->dev) {
 		set_bit(rb->index, &acm->read_urbs_free);
···
 
 	if (status) {
 		set_bit(rb->index, &acm->read_urbs_free);
-		dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
-							__func__, status);
 		if ((status != -ENOENT) || (urb->actual_length == 0))
 			return;
 	}
···
 	int status = urb->status;
 
 	if (status || (urb->actual_length != urb->transfer_buffer_length))
-		dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
-			__func__,
+		dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n",
 			urb->actual_length,
 			urb->transfer_buffer_length,
 			status);
···
 {
 	struct acm *acm = container_of(work, struct acm, work);
 
-	dev_vdbg(&acm->data->dev, "%s\n", __func__);
-
 	tty_port_tty_wakeup(&acm->port);
 }
 
···
 {
 	struct acm *acm;
 	int retval;
-
-	dev_dbg(tty->dev, "%s\n", __func__);
 
 	acm = acm_get_by_minor(tty->index);
 	if (!acm)
···
 static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 {
 	struct acm *acm = tty->driver_data;
-
-	dev_dbg(tty->dev, "%s\n", __func__);
 
 	return tty_port_open(&acm->port, tty, filp);
 }
···
 	struct acm *acm = container_of(port, struct acm, port);
 	int retval = -ENODEV;
 	int i;
-
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
 
 	mutex_lock(&acm->mutex);
 	if (acm->disconnected)
···
 {
 	struct acm *acm = container_of(port, struct acm, port);
 
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-
 	acm_release_minor(acm);
 	usb_put_intf(acm->control);
 	kfree(acm->country_codes);
···
 	struct urb *urb;
 	struct acm_wb *wb;
 	int i;
-
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
 
 	/*
 	 * Need to grab write_lock to prevent race with resume, but no need to
···
 static void acm_tty_cleanup(struct tty_struct *tty)
 {
 	struct acm *acm = tty->driver_data;
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
+
 	tty_port_put(&acm->port);
 }
 
 static void acm_tty_hangup(struct tty_struct *tty)
 {
 	struct acm *acm = tty->driver_data;
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
+
 	tty_port_hangup(&acm->port);
 }
 
 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
 {
 	struct acm *acm = tty->driver_data;
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
+
 	tty_port_close(&acm->port, tty, filp);
 }
 
···
 	if (!count)
 		return 0;
 
-	dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
+	dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count);
 
 	spin_lock_irqsave(&acm->write_lock, flags);
 	wbn = acm_wb_alloc(acm);
···
 	}
 
 	count = (count > acm->writesize) ? acm->writesize : count;
-	dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
+	dev_vdbg(&acm->data->dev, "writing %d bytes\n", count);
 	memcpy(wb->buf, buf, count);
 	wb->len = count;
 
···
 		return -EINVAL;
 	}
 
+	if (!intf->cur_altsetting)
+		return -EINVAL;
+
 	if (!buflen) {
 		if (intf->cur_altsetting->endpoint &&
 				intf->cur_altsetting->endpoint->extralen &&
···
 		dev_dbg(&intf->dev, "no interfaces\n");
 		return -ENODEV;
 	}
+	if (!data_interface->cur_altsetting || !control_interface->cur_altsetting)
+		return -ENODEV;
 
 	if (data_intf_num != call_intf_num)
 		dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
···
 {
 	int i;
 
-	dev_dbg(&acm->control->dev, "%s\n", __func__);
-
 	usb_kill_urb(acm->ctrlurb);
 	for (i = 0; i < ACM_NW; i++)
 		usb_kill_urb(acm->wb[i].urb);
···
 	struct usb_device *usb_dev = interface_to_usbdev(intf);
 	struct tty_struct *tty;
 	int i;
-
-	dev_dbg(&intf->dev, "%s\n", __func__);
 
 	/* sibling interface is already cleaning up */
 	if (!acm)

drivers/usb/class/cdc-wdm.c

···
 #define WDM_SUSPENDING		8
 #define WDM_RESETTING		9
 #define WDM_OVERFLOW		10
+#define WDM_DRAIN_ON_OPEN	11
 
 #define WDM_MAX			16
 
···
 	wake_up(&desc->wait);
 }
 
+/* forward declaration */
+static int service_outstanding_interrupt(struct wdm_device *desc);
+
 static void wdm_in_callback(struct urb *urb)
 {
 	struct wdm_device *desc = urb->context;
···
 		switch (status) {
 		case -ENOENT:
 			dev_dbg(&desc->intf->dev,
-				"nonzero urb status received: -ENOENT");
+				"nonzero urb status received: -ENOENT\n");
 			goto skip_error;
 		case -ECONNRESET:
 			dev_dbg(&desc->intf->dev,
-				"nonzero urb status received: -ECONNRESET");
+				"nonzero urb status received: -ECONNRESET\n");
 			goto skip_error;
 		case -ESHUTDOWN:
 			dev_dbg(&desc->intf->dev,
-				"nonzero urb status received: -ESHUTDOWN");
+				"nonzero urb status received: -ESHUTDOWN\n");
 			goto skip_error;
 		case -EPIPE:
-			dev_err(&desc->intf->dev,
+			dev_dbg(&desc->intf->dev,
 				"nonzero urb status received: -EPIPE\n");
 			break;
 		default:
···
 		}
 	}
 
-	desc->rerr = status;
+	/*
+	 * only set a new error if there is no previous error.
+	 * Errors are only cleared during read/open
+	 */
+	if (desc->rerr  == 0)
+		desc->rerr = status;
+
 	if (length + desc->length > desc->wMaxCommand) {
 		/* The buffer would overflow */
 		set_bit(WDM_OVERFLOW, &desc->flags);
···
 			desc->reslength = length;
 		}
 	}
+
+	/*
+	 * Handling devices with the WDM_DRAIN_ON_OPEN flag set:
+	 * If desc->resp_count is unset, then the urb was submitted
+	 * without a prior notification.  If the device returned any
+	 * data, then this implies that it had messages queued without
+	 * notifying us.  Continue reading until that queue is flushed.
+	 */
+	if (!desc->resp_count) {
+		if (!length) {
+			/* do not propagate the expected -EPIPE */
+			desc->rerr = 0;
+			goto unlock;
+		}
+		dev_dbg(&desc->intf->dev, "got %d bytes without notification\n", length);
+		set_bit(WDM_RESPONDING, &desc->flags);
+		usb_submit_urb(desc->response, GFP_ATOMIC);
+	}
+
 skip_error:
+	set_bit(WDM_READ, &desc->flags);
 	wake_up(&desc->wait);
 
-	set_bit(WDM_READ, &desc->flags);
+	if (desc->rerr) {
+		/*
+		 * Since there was an error, userspace may decide to not read
+		 * any data after poll'ing.
+		 * We should respond to further attempts from the device to send
+		 * data, so that we can get unstuck.
+		 */
+		service_outstanding_interrupt(desc);
+	}
+
+unlock:
 	spin_unlock(&desc->iuspin);
 }
 
···
 	switch (dr->bNotificationType) {
 	case USB_CDC_NOTIFY_RESPONSE_AVAILABLE:
 		dev_dbg(&desc->intf->dev,
-			"NOTIFY_RESPONSE_AVAILABLE received: index %d len %d",
+			"NOTIFY_RESPONSE_AVAILABLE received: index %d len %d\n",
 			le16_to_cpu(dr->wIndex), le16_to_cpu(dr->wLength));
 		break;
 
 	case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 
 		dev_dbg(&desc->intf->dev,
-			"NOTIFY_NETWORK_CONNECTION %s network",
+			"NOTIFY_NETWORK_CONNECTION %s network\n",
 			dr->wValue ? "connected to" : "disconnected from");
 		goto exit;
 	case USB_CDC_NOTIFY_SPEED_CHANGE:
-		dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)",
+		dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)\n",
 			urb->actual_length);
 		goto exit;
 	default:
···
 		&& !test_bit(WDM_DISCONNECTING, &desc->flags)
 		&& !test_bit(WDM_SUSPENDING, &desc->flags)) {
 		rv = usb_submit_urb(desc->response, GFP_ATOMIC);
-		dev_dbg(&desc->intf->dev, "%s: usb_submit_urb %d",
-			__func__, rv);
+		dev_dbg(&desc->intf->dev, "submit response URB %d\n", rv);
 	}
 	spin_unlock(&desc->iuspin);
 	if (rv < 0) {
···
 		rv = usb_translate_errors(rv);
 		goto out_free_mem_pm;
 	} else {
-		dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d",
+		dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d\n",
 			le16_to_cpu(req->wIndex));
 	}
 
···
 }
 
 /*
- * clear WDM_READ flag and possibly submit the read urb if resp_count
- * is non-zero.
+ * Submit the read urb if resp_count is non-zero.
  *
  * Called with desc->iuspin locked
  */
-static int clear_wdm_read_flag(struct wdm_device *desc)
+static int service_outstanding_interrupt(struct wdm_device *desc)
 {
 	int rv = 0;
-
-	clear_bit(WDM_READ, &desc->flags);
 
 	/* submit read urb only if the device is waiting for it */
 	if (!desc->resp_count || !--desc->resp_count)
···
 		}
 
 		if (!desc->reslength) { /* zero length read */
-			dev_dbg(&desc->intf->dev, "%s: zero length - clearing WDM_READ\n", __func__);
-			rv = clear_wdm_read_flag(desc);
+			dev_dbg(&desc->intf->dev, "zero length - clearing WDM_READ\n");
+			clear_bit(WDM_READ, &desc->flags);
+			rv = service_outstanding_interrupt(desc);
 			spin_unlock_irq(&desc->iuspin);
 			if (rv < 0)
 				goto err;
···
 
 	desc->length -= cntr;
 	/* in case we had outstanding data */
-	if (!desc->length)
-		clear_wdm_read_flag(desc);
+	if (!desc->length) {
+		clear_bit(WDM_READ, &desc->flags);
+		service_outstanding_interrupt(desc);
+	}
 	spin_unlock_irq(&desc->iuspin);
 	rv = cntr;
 
···
 			dev_err(&desc->intf->dev,
 				"Error submitting int urb - %d\n", rv);
 			rv = usb_translate_errors(rv);
+		} else if (test_bit(WDM_DRAIN_ON_OPEN, &desc->flags)) {
+			/*
+			 * Some devices keep pending messages queued
+			 * without resending notifications.  We must
+			 * flush the message queue before we can
+			 * assume a one-to-one relationship between
+			 * notifications and messages in the queue
+			 */
+			dev_dbg(&desc->intf->dev, "draining queued data\n");
+			set_bit(WDM_RESPONDING, &desc->flags);
+			rv = usb_submit_urb(desc->response, GFP_KERNEL);
 		}
 	} else {
 		rv = 0;
···
 
 	if (!desc->count) {
 		if (!test_bit(WDM_DISCONNECTING, &desc->flags)) {
-			dev_dbg(&desc->intf->dev, "wdm_release: cleanup");
+			dev_dbg(&desc->intf->dev, "wdm_release: cleanup\n");
 			kill_urbs(desc);
 			spin_lock_irq(&desc->iuspin);
 			desc->resp_count = 0;
···
 /* --- hotplug --- */
 
 static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep,
-		u16 bufsize, int (*manage_power)(struct usb_interface *, int))
+		u16 bufsize, int (*manage_power)(struct usb_interface *, int),
+		bool drain_on_open)
 {
 	int rv = -ENOMEM;
 	struct wdm_device *desc;
···
 
 	desc->manage_power = manage_power;
 
+	/*
+	 * "drain_on_open" enables a hack to work around a firmware
+	 * issue observed on network functions, in particular MBIM
+	 * functions.
+	 *
+	 * Quoting section 7 of the CDC-WMC r1.1 specification:
+	 *
+	 *  "The firmware shall interpret GetEncapsulatedResponse as a
+	 *   request to read response bytes. The firmware shall send
+	 *   the next wLength bytes from the response. The firmware
+	 *   shall allow the host to retrieve data using any number of
+	 *   GetEncapsulatedResponse requests. The firmware shall
+	 *   return a zero- length reply if there are no data bytes
+	 *   available.
+	 *
+	 *   The firmware shall send ResponseAvailable notifications
+	 *   periodically, using any appropriate algorithm, to inform
+	 *   the host that there is data available in the reply
+	 *   buffer. The firmware is allowed to send ResponseAvailable
+	 *   notifications even if there is no data available, but
+	 *   this will obviously reduce overall performance."
+	 *
+	 * These requirements, although they make equally sense, are
+	 * often not implemented by network functions. Some firmwares
+	 * will queue data indefinitely, without ever resending a
+	 * notification. The result is that the driver and firmware
+	 * loses "syncronization" if the driver ever fails to respond
+	 * to a single notification, something which easily can happen
+	 * on release(). When this happens, the driver will appear to
+	 * never receive notifications for the most current data. Each
+	 * notification will only cause a single read, which returns
+	 * the oldest data in the firmware's queue.
+	 *
+	 * The "drain_on_open" hack resolves the situation by draining
+	 * data from the firmware until none is returned, without a
+	 * prior notification.
+	 *
+	 * This will inevitably race with the firmware, risking that
+	 * we read data from the device before handling the associated
+	 * notification. To make things worse, some of the devices
+	 * needing the hack do not implement the "return zero if no
+	 * data is available" requirement either. Instead they return
+	 * an error on the subsequent read in this case.  This means
+	 * that "winning" the race can cause an unexpected EIO to
+	 * userspace.
+	 *
+	 * "winning" the race is more likely on resume() than on
+	 * open(), and the unexpected error is more harmful in the
+	 * middle of an open session. The hack is therefore only
+	 * applied on open(), and not on resume() where it logically
+	 * would be equally necessary. So we define open() as the only
+	 * driver <-> device "syncronization point".  Should we happen
+	 * to lose a notification after open(), then syncronization
+	 * will be lost until release()
+	 *
+	 * The hack should not be enabled for CDC WDM devices
+	 * conforming to the CDC-WMC r1.1 specification.  This is
+	 * ensured by setting drain_on_open to false in wdm_probe().
+	 */
+	if (drain_on_open)
+		set_bit(WDM_DRAIN_ON_OPEN, &desc->flags);
+
 	spin_lock(&wdm_device_list_lock);
 	list_add(&desc->device_list, &wdm_device_list);
 	spin_unlock(&wdm_device_list_lock);
···
 		goto err;
 	ep = &iface->endpoint[0].desc;
 
-	rv = wdm_create(intf, ep, maxcom, &wdm_manage_power);
+	rv = wdm_create(intf, ep, maxcom, &wdm_manage_power, false);
 
 err:
 	return rv;
···
 {
 	int rv = -EINVAL;
 
-	rv = wdm_create(intf, ep, bufsize, manage_power);
+	rv = wdm_create(intf, ep, bufsize, manage_power, true);
 	if (rv < 0)
 		goto err;
 
···
 	if (!desc->count)
 		cleanup(desc);
 	else
-		dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count);
+		dev_dbg(&intf->dev, "%d open files - postponing cleanup\n", desc->count);
 	mutex_unlock(&wdm_mutex);
 }
 

drivers/usb/class/usbtmc.c

···
 	struct usbtmc_device_data *data = to_usbtmc_data(kref);
 
 	usb_put_dev(data->usb_dev);
+	kfree(data);
 }
 
 static int usbtmc_open(struct inode *inode, struct file *filp)
···
 
 	dev_dbg(&intf->dev, "%s called\n", __func__);
 
-	data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
+	data = kmalloc(sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
 
···
 	if (data->iin_ep_present) {
 		/* allocate int urb */
 		data->iin_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!data->iin_urb) {
-			dev_err(&intf->dev, "Failed to allocate int urb\n");
+		if (!data->iin_urb)
 			goto error_register;
-		}
 
 		/* will reference data in int urb */
 		kref_get(&data->kref);
···
 		/* allocate buffer for interrupt in */
 		data->iin_buffer = kmalloc(data->iin_wMaxPacketSize,
 					GFP_KERNEL);
-		if (!data->iin_buffer) {
-			dev_err(&intf->dev, "Failed to allocate int buf\n");
+		if (!data->iin_buffer)
 			goto error_register;
-		}
 
 		/* fill interrupt urb */
 		usb_fill_int_urb(data->iin_urb, data->usb_dev,

drivers/usb/common/ulpi.c

···
 
 int ulpi_read(struct ulpi *ulpi, u8 addr)
 {
-	return ulpi->ops->read(ulpi->ops, addr);
+	return ulpi->ops->read(ulpi->dev.parent, addr);
 }
 EXPORT_SYMBOL_GPL(ulpi_read);
 
 int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val)
 {
-	return ulpi->ops->write(ulpi->ops, addr, val);
+	return ulpi->ops->write(ulpi->dev.parent, addr, val);
 }
 EXPORT_SYMBOL_GPL(ulpi_write);
 
···
  *
  * Registers a driver with the ULPI bus.
  */
-int ulpi_register_driver(struct ulpi_driver *drv)
+int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module)
 {
 	if (!drv->probe)
 		return -EINVAL;
 
+	drv->driver.owner = module;
 	drv->driver.bus = &ulpi_bus;
 
 	return driver_register(&drv->driver);
 }
-EXPORT_SYMBOL_GPL(ulpi_register_driver);
+EXPORT_SYMBOL_GPL(__ulpi_register_driver);
 
 /**
  * ulpi_unregister_driver - unregister a driver with the ULPI bus
···
 {
 	int ret;
 
+	ulpi->dev.parent = dev; /* needed early for ops */
+
 	/* Test the interface */
 	ret = ulpi_write(ulpi, ULPI_SCRATCH, 0xaa);
 	if (ret < 0)
···
 	ulpi->id.product = ulpi_read(ulpi, ULPI_PRODUCT_ID_LOW);
 	ulpi->id.product |= ulpi_read(ulpi, ULPI_PRODUCT_ID_HIGH) << 8;
 
-	ulpi->dev.parent = dev;
 	ulpi->dev.bus = &ulpi_bus;
 	ulpi->dev.type = &ulpi_dev_type;
 	dev_set_name(&ulpi->dev, "%s.ulpi", dev_name(dev));
···
  * Allocates and registers a ULPI device and an interface for it. Called from
  * the USB controller that provides the ULPI interface.
  */
-struct ulpi *ulpi_register_interface(struct device *dev, struct ulpi_ops *ops)
+struct ulpi *ulpi_register_interface(struct device *dev,
+				     const struct ulpi_ops *ops)
 {
 	struct ulpi *ulpi;
 	int ret;
···
 		return ERR_PTR(-ENOMEM);
 
 	ulpi->ops = ops;
-	ops->dev = dev;
 
 	ret = ulpi_register(dev, ulpi);
 	if (ret) {

drivers/usb/core/Kconfig

···
 	  Implements OTG Finite State Machine as specified in On-The-Go
 	  and Embedded Host Supplement to the USB Revision 2.0 Specification.
 
-config USB_ULPI_BUS
-	tristate "USB ULPI PHY interface support"
-	depends on USB_SUPPORT
+config USB_LEDS_TRIGGER_USBPORT
+	tristate "USB port LED trigger"
+	depends on USB && LEDS_TRIGGERS
 	help
-	  UTMI+ Low Pin Interface (ULPI) is specification for a commonly used
-	  USB 2.0 PHY interface. The ULPI specification defines a standard set
-	  of registers that can be used to detect the vendor and product which
-	  allows ULPI to be handled as a bus. This module is the driver for that
-	  bus.
-
-	  The ULPI interfaces (the buses) are registered by the drivers for USB
-	  controllers which support ULPI register access and have ULPI PHY
-	  attached to them. The ULPI PHY drivers themselves are normal PHY
-	  drivers.
-
-	  ULPI PHYs provide often functions such as ADP sensing/probing (OTG
-	  protocol) and USB charger detection.
-
-	  To compile this driver as a module, choose M here: the module will
-	  be called ulpi.
+	  This driver allows LEDs to be controlled by USB events. Enabling this
+	  trigger allows specifying list of USB ports that should turn on LED
+	  when some USB device gets connected.

drivers/usb/core/Makefile

···
 usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o
 usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o
 usbcore-y += devio.o notify.o generic.o quirks.o devices.o
-usbcore-y += port.o of.o
+usbcore-y += port.o
 
+usbcore-$(CONFIG_OF)		+= of.o
 usbcore-$(CONFIG_PCI)		+= hcd-pci.o
 usbcore-$(CONFIG_ACPI)		+= usb-acpi.o
 
 obj-$(CONFIG_USB)		+= usbcore.o
+
+obj-$(CONFIG_USB_LEDS_TRIGGER_USBPORT)	+= ledtrig-usbport.o

drivers/usb/core/hcd.c

···
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
 #include <linux/usb/phy.h>
+#include <linux/usb/otg.h>
 
 #include "usb.h"
 
···
 	struct usb_hcd *hcd;
 
 	hcd = kzalloc(sizeof(*hcd) + driver->hcd_priv_size, GFP_KERNEL);
-	if (!hcd) {
-		dev_dbg (dev, "hcd alloc failed\n");
+	if (!hcd)
 		return NULL;
-	}
 	if (primary_hcd == NULL) {
 		hcd->address0_mutex = kmalloc(sizeof(*hcd->address0_mutex),
 				GFP_KERNEL);
···
 
 /*-------------------------------------------------------------------------*/
 
-#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
+#if IS_ENABLED(CONFIG_USB_MON)
 
 const struct usb_mon_operations *mon_ops;
 

drivers/usb/core/hub.c

···
 	dev_info(&intf->dev, "USB hub found\n");
 
 	hub = kzalloc(sizeof(*hub), GFP_KERNEL);
-	if (!hub) {
-		dev_dbg(&intf->dev, "couldn't kmalloc hub struct\n");
+	if (!hub)
 		return -ENOMEM;
-	}
 
 	kref_init(&hub->kref);
 	hub->intfdev = &intf->dev;
···
 				USB_CTRL_SET_TIMEOUT);
 	else
 		return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
-				USB_REQ_CLEAR_FEATURE, USB_RECIP_INTERFACE,
+				USB_REQ_SET_FEATURE, USB_RECIP_INTERFACE,
 				USB_INTRF_FUNC_SUSPEND,	0, NULL, 0,
 				USB_CTRL_SET_TIMEOUT);
 }
···
 	}
 
 	buf = kmalloc(len, GFP_NOIO);
-	if (buf == NULL) {
-		dev_err(&udev->dev, "no mem to re-read configs after reset\n");
+	if (!buf)
 		/* assume the worst */
 		return 1;
-	}
+
 	for (index = 0; index < udev->descriptor.bNumConfigurations; index++) {
 		old_length = le16_to_cpu(udev->config[index].desc.wTotalLength);
 		length = usb_get_descriptor(udev, USB_DT_CONFIG, index, buf,

drivers/usb/core/ledtrig-usbport.c

···
+/*
+ * USB port LED trigger
+ *
+ * Copyright (C) 2016 Rafał Miłecki <[e-mail]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/device.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+struct usbport_trig_data {
+	struct led_classdev *led_cdev;
+	struct list_head ports;
+	struct notifier_block nb;
+	int count; /* Amount of connected matching devices */
+};
+
+struct usbport_trig_port {
+	struct usbport_trig_data *data;
+	struct usb_device *hub;
+	int portnum;
+	char *port_name;
+	bool observed;
+	struct device_attribute attr;
+	struct list_head list;
+};
+
+/***************************************
+ * Helpers
+ ***************************************/
+
+/**
+ * usbport_trig_usb_dev_observed - Check if dev is connected to observed port
+ */
+static bool usbport_trig_usb_dev_observed(struct usbport_trig_data *usbport_data,
+					  struct usb_device *usb_dev)
+{
+	struct usbport_trig_port *port;
+
+	if (!usb_dev->parent)
+		return false;
+
+	list_for_each_entry(port, &usbport_data->ports, list) {
+		if (usb_dev->parent == port->hub &&
+		    usb_dev->portnum == port->portnum)
+			return port->observed;
+	}
+
+	return false;
+}
+
+static int usbport_trig_usb_dev_check(struct usb_device *usb_dev, void *data)
+{
+	struct usbport_trig_data *usbport_data = data;
+
+	if (usbport_trig_usb_dev_observed(usbport_data, usb_dev))
+		usbport_data->count++;
+
+	return 0;
+}
+
+/**
+ * usbport_trig_update_count - Recalculate amount of connected matching devices
+ */
+static void usbport_trig_update_count(struct usbport_trig_data *usbport_data)
+{
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+
+	usbport_data->count = 0;
+	usb_for_each_dev(usbport_data, usbport_trig_usb_dev_check);
+	led_cdev->brightness_set(led_cdev,
+				 usbport_data->count ? LED_FULL : LED_OFF);
+}
+
+/***************************************
+ * Device attr
+ ***************************************/
+
+static ssize_t usbport_trig_port_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct usbport_trig_port *port = container_of(attr,
+						      struct usbport_trig_port,
+						      attr);
+
+	return sprintf(buf, "%d\n", port->observed) + 1;
+}
+
+static ssize_t usbport_trig_port_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t size)
+{
+	struct usbport_trig_port *port = container_of(attr,
+						      struct usbport_trig_port,
+						      attr);
+
+	if (!strcmp(buf, "0") || !strcmp(buf, "0\n"))
+		port->observed = 0;
+	else if (!strcmp(buf, "1") || !strcmp(buf, "1\n"))
+		port->observed = 1;
+	else
+		return -EINVAL;
+
+	usbport_trig_update_count(port->data);
+
+	return size;
+}
+
+static struct attribute *ports_attrs[] = {
+	NULL,
+};
+static const struct attribute_group ports_group = {
+	.name = "ports",
+	.attrs = ports_attrs,
+};
+
+/***************************************
+ * Adding & removing ports
+ ***************************************/
+
+static int usbport_trig_add_port(struct usbport_trig_data *usbport_data,
+				 struct usb_device *usb_dev,
+				 const char *hub_name, int portnum)
+{
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+	struct usbport_trig_port *port;
+	size_t len;
+	int err;
+
+	port = kzalloc(sizeof(*port), GFP_KERNEL);
+	if (!port) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+
+	port->data = usbport_data;
+	port->hub = usb_dev;
+	port->portnum = portnum;
+
+	len = strlen(hub_name) + 8;
+	port->port_name = kzalloc(len, GFP_KERNEL);
+	if (!port->port_name) {
+		err = -ENOMEM;
+		goto err_free_port;
+	}
+	snprintf(port->port_name, len, "%s-port%d", hub_name, portnum);
+
+	port->attr.attr.name = port->port_name;
+	port->attr.attr.mode = S_IRUSR | S_IWUSR;
+	port->attr.show = usbport_trig_port_show;
+	port->attr.store = usbport_trig_port_store;
+
+	err = sysfs_add_file_to_group(&led_cdev->dev->kobj, &port->attr.attr,
+				      ports_group.name);
+	if (err)
+		goto err_free_port_name;
+
+	list_add_tail(&port->list, &usbport_data->ports);
+
+	return 0;
+
+err_free_port_name:
+	kfree(port->port_name);
+err_free_port:
+	kfree(port);
+err_out:
+	return err;
+}
+
+static int usbport_trig_add_usb_dev_ports(struct usb_device *usb_dev,
+					  void *data)
+{
+	struct usbport_trig_data *usbport_data = data;
+	int i;
+
+	for (i = 1; i <= usb_dev->maxchild; i++)
+		usbport_trig_add_port(usbport_data, usb_dev,
+				      dev_name(&usb_dev->dev), i);
+
+	return 0;
+}
+
+static void usbport_trig_remove_port(struct usbport_trig_data *usbport_data,
+				     struct usbport_trig_port *port)
+{
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+
+	list_del(&port->list);
+	sysfs_remove_file_from_group(&led_cdev->dev->kobj, &port->attr.attr,
+				     ports_group.name);
+	kfree(port->port_name);
+	kfree(port);
+}
+
+static void usbport_trig_remove_usb_dev_ports(struct usbport_trig_data *usbport_data,
+					      struct usb_device *usb_dev)
+{
+	struct usbport_trig_port *port, *tmp;
+
+	list_for_each_entry_safe(port, tmp, &usbport_data->ports, list) {
+		if (port->hub == usb_dev)
+			usbport_trig_remove_port(usbport_data, port);
+	}
+}
+
+/***************************************
+ * Init, exit, etc.
+ ***************************************/
+
+static int usbport_trig_notify(struct notifier_block *nb, unsigned long action,
+			       void *data)
+{
+	struct usbport_trig_data *usbport_data =
+		container_of(nb, struct usbport_trig_data, nb);
+	struct led_classdev *led_cdev = usbport_data->led_cdev;
+	struct usb_device *usb_dev = data;
+	bool observed;
+
+	observed = usbport_trig_usb_dev_observed(usbport_data, usb_dev);
+
+	switch (action) {
+	case USB_DEVICE_ADD:
+		usbport_trig_add_usb_dev_ports(usb_dev, usbport_data);
+		if (observed && usbport_data->count++ == 0)
+			led_cdev->brightness_set(led_cdev, LED_FULL);
+		return NOTIFY_OK;
+	case USB_DEVICE_REMOVE:
+		usbport_trig_remove_usb_dev_ports(usbport_data, usb_dev);
+		if (observed && --usbport_data->count == 0)
+			led_cdev->brightness_set(led_cdev, LED_OFF);
+		return NOTIFY_OK;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static void usbport_trig_activate(struct led_classdev *led_cdev)
+{
+	struct usbport_trig_data *usbport_data;
+	int err;
+
+	usbport_data = kzalloc(sizeof(*usbport_data), GFP_KERNEL);
+	if (!usbport_data)
+		return;
+	usbport_data->led_cdev = led_cdev;
+
+	/* List of ports */
+	INIT_LIST_HEAD(&usbport_data->ports);
+	err = sysfs_create_group(&led_cdev->dev->kobj, &ports_group);
+	if (err)
+		goto err_free;
+	usb_for_each_dev(usbport_data, usbport_trig_add_usb_dev_ports);
+
+	/* Notifications */
+	usbport_data->nb.notifier_call = usbport_trig_notify,
+	led_cdev->trigger_data = usbport_data;
+	usb_register_notify(&usbport_data->nb);
+
+	led_cdev->activated = true;
+	return;
+
+err_free:
+	kfree(usbport_data);
+}
+
+static void usbport_trig_deactivate(struct led_classdev *led_cdev)
+{
+	struct usbport_trig_data *usbport_data = led_cdev->trigger_data;
+	struct usbport_trig_port *port, *tmp;
+
+	if (!led_cdev->activated)
+		return;
+
+	list_for_each_entry_safe(port, tmp, &usbport_data->ports, list) {
+		usbport_trig_remove_port(usbport_data, port);
+	}
+
+	usb_unregister_notify(&usbport_data->nb);
+
+	sysfs_remove_group(&led_cdev->dev->kobj, &ports_group);
+
+	kfree(usbport_data);
+
+	led_cdev->activated = false;
+}
+
+static struct led_trigger usbport_led_trigger = {
+	.name     = "usbport",
+	.activate = usbport_trig_activate,
+	.deactivate = usbport_trig_deactivate,
+};
+
+static int __init usbport_trig_init(void)
+{
+	return led_trigger_register(&usbport_led_trigger);
+}
+
+static void __exit usbport_trig_exit(void)
+{
+	led_trigger_unregister(&usbport_led_trigger);
+}
+
+module_init(usbport_trig_init);
+module_exit(usbport_trig_exit);
+
+MODULE_AUTHOR("Rafał Miłecki <[e-mail]>");
+MODULE_DESCRIPTION("USB port trigger");
+MODULE_LICENSE("GPL v2");

drivers/usb/core/message.c

···
 		nintf = cp->desc.bNumInterfaces;
 		new_interfaces = kmalloc(nintf * sizeof(*new_interfaces),
 				GFP_NOIO);
-		if (!new_interfaces) {
-			dev_err(&dev->dev, "Out of memory\n");
+		if (!new_interfaces)
 			return -ENOMEM;
-		}
 
 		for (; n < nintf; ++n) {
 			new_interfaces[n] = kzalloc(
 					sizeof(struct usb_interface),
 					GFP_NOIO);
 			if (!new_interfaces[n]) {
-				dev_err(&dev->dev, "Out of memory\n");
 				ret = -ENOMEM;
 free_interfaces:
 				while (--n >= 0)
···
 		intf->dev.bus = &usb_bus_type;
 		intf->dev.type = &usb_if_device_type;
 		intf->dev.groups = usb_interface_groups;
+		/*
+		 * Please refer to usb_alloc_dev() to see why we set
+		 * dma_mask and dma_pfn_offset.
+		 */
 		intf->dev.dma_mask = dev->dev.dma_mask;
+		intf->dev.dma_pfn_offset = dev->dev.dma_pfn_offset;
 		INIT_WORK(&intf->reset_ws, __usb_queue_reset_device);
 		intf->minor = -1;
 		device_initialize(&intf->dev);

drivers/usb/core/of.c

···
  */
 
 #include <linux/of.h>
+#include <linux/usb/of.h>
 
 /**
  * usb_of_get_child_node - Find the device node match port number

drivers/usb/core/otg_whitelist.h

···
 { USB_DEVICE(0x0525, 0xa4a2), },
 #endif
 
-#if	defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE)
+#if	IS_ENABLED(CONFIG_USB_TEST)
 /* gadget zero, for testing */
 { USB_DEVICE(0x0525, 0xa4a0), },
 #endif

drivers/usb/core/urb.c

···
 	urb = kmalloc(sizeof(struct urb) +
 		iso_packets * sizeof(struct usb_iso_packet_descriptor),
 		mem_flags);
-	if (!urb) {
-		printk(KERN_ERR "alloc_urb: kmalloc failed\n");
+	if (!urb)
 		return NULL;
-	}
 	usb_init_urb(urb);
 	return urb;
 }

drivers/usb/core/usb.c

···
 	dev->dev.bus = &usb_bus_type;
 	dev->dev.type = &usb_device_type;
 	dev->dev.groups = usb_device_groups;
+	/*
+	 * Fake a dma_mask/offset for the USB device:
+	 * We cannot really use the dma-mapping API (dma_alloc_* and
+	 * dma_map_*) for USB devices but instead need to use
+	 * usb_alloc_coherent and pass data in 'urb's, but some subsystems
+	 * manually look into the mask/offset pair to determine whether
+	 * they need bounce buffers.
+	 * Note: calling dma_set_mask() on a USB device would set the
+	 * mask for the entire HCD, so don't do that.
+	 */
 	dev->dev.dma_mask = bus->controller->dma_mask;
+	dev->dev.dma_pfn_offset = bus->controller->dma_pfn_offset;
 	set_dev_node(&dev->dev, dev_to_node(bus->controller));
 	dev->state = USB_STATE_ATTACHED;
 	dev->lpm_disable_count = 1;

drivers/usb/dwc2/core.c

···
 	return ret;
 }
 
+/**
+ * dwc2_wait_for_mode() - Waits for the controller mode.
+ * @hsotg:	Programming view of the DWC_otg controller.
+ * @host_mode:	If true, waits for host mode, otherwise device mode.
+ */
+static void dwc2_wait_for_mode(struct dwc2_hsotg *hsotg,
+			       bool host_mode)
+{
+	ktime_t start;
+	ktime_t end;
+	unsigned int timeout = 110;
+
+	dev_vdbg(hsotg->dev, "Waiting for %s mode\n",
+		 host_mode ? "host" : "device");
+
+	start = ktime_get();
+
+	while (1) {
+		s64 ms;
+
+		if (dwc2_is_host_mode(hsotg) == host_mode) {
+			dev_vdbg(hsotg->dev, "%s mode set\n",
+				 host_mode ? "Host" : "Device");
+			break;
+		}
+
+		end = ktime_get();
+		ms = ktime_to_ms(ktime_sub(end, start));
+
+		if (ms >= (s64)timeout) {
+			dev_warn(hsotg->dev, "%s: Couldn't set %s mode\n",
+				 __func__, host_mode ? "host" : "device");
+			break;
+		}
+
+		usleep_range(1000, 2000);
+	}
+}
+
+/**
+ * dwc2_iddig_filter_enabled() - Returns true if the IDDIG debounce
+ * filter is enabled.
+ */
+static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg)
+{
+	u32 gsnpsid;
+	u32 ghwcfg4;
+
+	if (!dwc2_hw_is_otg(hsotg))
+		return false;
+
+	/* Check if core configuration includes the IDDIG filter. */
+	ghwcfg4 = dwc2_readl(hsotg->regs + GHWCFG4);
+	if (!(ghwcfg4 & GHWCFG4_IDDIG_FILT_EN))
+		return false;
+
+	/*
+	 * Check if the IDDIG debounce filter is bypassed. Available
+	 * in core version >= 3.10a.
+	 */
+	gsnpsid = dwc2_readl(hsotg->regs + GSNPSID);
+	if (gsnpsid >= DWC2_CORE_REV_3_10a) {
+		u32 gotgctl = dwc2_readl(hsotg->regs + GOTGCTL);
+
+		if (gotgctl & GOTGCTL_DBNCE_FLTR_BYPASS)
+			return false;
+	}
+
+	return true;
+}
+
 /*
  * Do core a soft reset of the core.  Be careful with this because it
  * resets all the internal state machines of the core.
···
 {
 	u32 greset;
 	int count = 0;
+	bool wait_for_host_mode = false;
 
 	dev_vdbg(hsotg->dev, "%s()\n", __func__);
+
+	/*
+	 * If the current mode is host, either due to the force mode
+	 * bit being set (which persists after core reset) or the
+	 * connector id pin, a core soft reset will temporarily reset
+	 * the mode to device. A delay from the IDDIG debounce filter
+	 * will occur before going back to host mode.
+	 *
+	 * Determine whether we will go back into host mode after a
+	 * reset and account for this delay after the reset.
+	 */
+	if (dwc2_iddig_filter_enabled(hsotg)) {
+		u32 gotgctl = dwc2_readl(hsotg->regs + GOTGCTL);
+		u32 gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
+
+		if (!(gotgctl & GOTGCTL_CONID_B) ||
+		    (gusbcfg & GUSBCFG_FORCEHOSTMODE)) {
+			wait_for_host_mode = true;
+		}
+	}
 
 	/* Core Soft Reset */
 	greset = dwc2_readl(hsotg->regs + GRSTCTL);
···
 		}
 	} while (!(greset & GRSTCTL_AHBIDLE));
 
+	if (wait_for_host_mode)
+		dwc2_wait_for_mode(hsotg, true);
+
 	return 0;
 }
 
···
  * Checks are done in this function to determine whether doing a force
  * would be valid or not.
  *
- * If a force is done, it requires a 25ms delay to take effect.
- *
- * Returns true if the mode was forced.
+ * If a force is done, it requires a IDDIG debounce filter delay if
+ * the filter is configured and enabled. We poll the current mode of
+ * the controller to account for this delay.
  */
 static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host)
 {
···
 	gusbcfg |= set;
 	dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG);
 
-	msleep(25);
+	dwc2_wait_for_mode(hsotg, host);
 	return true;
 }
 
-/*
- * Clears the force mode bits.
+/**
+ * dwc2_clear_force_mode() - Clears the force mode bits.
+ *
+ * After clearing the bits, wait up to 100 ms to account for any
+ * potential IDDIG filter delay. We can't know if we expect this delay
+ * or not because the value of the connector ID status is affected by
+ * the force mode. We only need to call this once during probe if
+ * dr_mode == OTG.
  */
 static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg)
 {
···
 	gusbcfg &= ~GUSBCFG_FORCEDEVMODE;
 	dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG);
 
-	/*
-	 * NOTE: This long sleep is _very_ important, otherwise the core will
-	 * not stay in host mode after a connector ID change!
-	 */
-	msleep(25);
+	if (dwc2_iddig_filter_enabled(hsotg))
+		usleep_range(100000, 110000);
 }
 
 /*
···
 			 __func__, hsotg->dr_mode);
 		break;
 	}
-
-	/*
-	 * NOTE: This is required for some rockchip soc based
-	 * platforms.
-	 */
-	msleep(50);
 }
 
 /*

drivers/usb/dwc2/core.h

···
 	DWC2_L3,	/* Off state */
 };
 
-/*
- * Gadget periodic tx fifo sizes as used by legacy driver
- * EP0 is not included
- */
-#define DWC2_G_P_LEGACY_TX_FIFO_SIZE {256, 256, 256, 256, 768, 768, 768, \
-					   768, 0, 0, 0, 0, 0, 0, 0}
-
 /* Gadget ep0 states */
 enum dwc2_ep0_state {
 	DWC2_EP0_SETUP,
···
 #define DWC2_CORE_REV_2_92a	0x4f54292a
 #define DWC2_CORE_REV_2_94a	0x4f54294a
 #define DWC2_CORE_REV_3_00a	0x4f54300a
+#define DWC2_CORE_REV_3_10a	0x4f54310a
 
 #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
 	union dwc2_hcd_internal_flags {

drivers/usb/dwc2/gadget.c

···
  */
 static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg)
 {
-	unsigned int ep;
+	unsigned int fifo;
 	unsigned int addr;
 	int timeout;
+	u32 dptxfsizn;
 	u32 val;
 
 	/* Reset fifo map if not correctly cleared during previous session */
···
 	 * them to endpoints dynamically according to maxpacket size value of
 	 * given endpoint.
 	 */
-	for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) {
-		if (!hsotg->g_tx_fifo_sz[ep])
-			continue;
-		val = addr;
-		val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT;
-		WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem,
-			  "insufficient fifo memory");
-		addr += hsotg->g_tx_fifo_sz[ep];
+	for (fifo = 1; fifo < MAX_EPS_CHANNELS; fifo++) {
+		dptxfsizn = dwc2_readl(hsotg->regs + DPTXFSIZN(fifo));
 
-		dwc2_writel(val, hsotg->regs + DPTXFSIZN(ep));
+		val = (dptxfsizn & FIFOSIZE_DEPTH_MASK) | addr;
+		addr += dptxfsizn >> FIFOSIZE_DEPTH_SHIFT;
+
+		if (addr > hsotg->fifo_mem)
+			break;
+
+		dwc2_writel(val, hsotg->regs + DPTXFSIZN(fifo));
 	}
 
 	/*
···
 			return -ENOSPC;
 		}
 	} else if (hsotg->dedicated_fifos && hs_ep->index != 0) {
-		can_write = dwc2_readl(hsotg->regs + DTXFSTS(hs_ep->index));
+		can_write = dwc2_readl(hsotg->regs +
+				DTXFSTS(hs_ep->fifo_index));
 
 		can_write &= 0xffff;
 		can_write *= 4;
···
 
 	if (!hsotg->dedicated_fifos)
 		return;
-	size = (dwc2_readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4;
+	size = (dwc2_readl(hsotg->regs + DTXFSTS(ep->fifo_index)) & 0xffff) * 4;
 	if (size < ep->fifo_size)
 		dwc2_hsotg_txfifo_flush(hsotg, ep->fifo_index);
 }
···
 		break;
 	}
 
-	/* If fifo is already allocated for this ep */
-	if (hs_ep->fifo_index) {
-		size =  hs_ep->ep.maxpacket * hs_ep->mc;
-		/* If bigger fifo is required deallocate current one */
-		if (size > hs_ep->fifo_size) {
-			hsotg->fifo_map &= ~(1 << hs_ep->fifo_index);
-			hs_ep->fifo_index = 0;
-			hs_ep->fifo_size = 0;
-		}
-	}
-
 	/*
 	 * if the hardware has dedicated fifos, we must give each IN EP
 	 * a unique tx-fifo even if it is non-periodic.
 	 */
-	if (dir_in && hsotg->dedicated_fifos && !hs_ep->fifo_index) {
+	if (dir_in && hsotg->dedicated_fifos) {
 		u32 fifo_index = 0;
 		u32 fifo_size = UINT_MAX;
 		size = hs_ep->ep.maxpacket*hs_ep->mc;
···
 
 	spin_lock_irqsave(&hsotg->lock, flags);
 
-	hsotg->fifo_map &= ~(1<<hs_ep->fifo_index);
-	hs_ep->fifo_index = 0;
-	hs_ep->fifo_size = 0;
-
 	ctrl = dwc2_readl(hsotg->regs + epctrl_reg);
 	ctrl &= ~DXEPCTL_EPENA;
 	ctrl &= ~DXEPCTL_USBACTEP;
···
 
 	/* terminate all requests with shutdown */
 	kill_all_requests(hsotg, hs_ep, -ESHUTDOWN);
+
+	hsotg->fifo_map &= ~(1 << hs_ep->fifo_index);
+	hs_ep->fifo_index = 0;
+	hs_ep->fifo_size = 0;
 
 	spin_unlock_irqrestore(&hsotg->lock, flags);
 	return 0;
···
 		otg_set_peripheral(hsotg->uphy->otg, &hsotg->gadget);
 
 	spin_lock_irqsave(&hsotg->lock, flags);
-	dwc2_hsotg_init(hsotg);
-	dwc2_hsotg_core_init_disconnected(hsotg, false);
+	if (dwc2_hw_is_device(hsotg)) {
+		dwc2_hsotg_init(hsotg);
+		dwc2_hsotg_core_init_disconnected(hsotg, false);
+	}
+
 	hsotg->enabled = 0;
 	spin_unlock_irqrestore(&hsotg->lock, flags);
 
···
 static void dwc2_hsotg_of_probe(struct dwc2_hsotg *hsotg)
 {
 	struct device_node *np = hsotg->dev->of_node;
-	u32 len = 0;
-	u32 i = 0;
 
 	/* Enable dma if requested in device tree */
 	hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma");
 
-	/*
-	* Register TX periodic fifo size per endpoint.
-	* EP0 is excluded since it has no fifo configuration.
-	*/
-	if (!of_find_property(np, "g-tx-fifo-size", &len))
-		goto rx_fifo;
-
-	len /= sizeof(u32);
-
-	/* Read tx fifo sizes other than ep0 */
-	if (of_property_read_u32_array(np, "g-tx-fifo-size",
-						&hsotg->g_tx_fifo_sz[1], len))
-		goto rx_fifo;
-
-	/* Add ep0 */
-	len++;
-
-	/* Make remaining TX fifos unavailable */
-	if (len < MAX_EPS_CHANNELS) {
-		for (i = len; i < MAX_EPS_CHANNELS; i++)
-			hsotg->g_tx_fifo_sz[i] = 0;
-	}
-
-rx_fifo:
 	/* Register RX fifo size */
 	of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz);
 
···
 	struct device *dev = hsotg->dev;
 	int epnum;
 	int ret;
-	int i;
-	u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE;
 
 	/* Initialize to legacy fifo configuration values */
 	hsotg->g_rx_fifo_sz = 2048;
 	hsotg->g_np_g_tx_fifo_sz = 1024;
-	memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo));
 	/* Device tree specific probe */
 	dwc2_hsotg_of_probe(hsotg);
 
···
 	dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n",
 						hsotg->g_np_g_tx_fifo_sz);
 	dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz);
-	for (i = 0; i < MAX_EPS_CHANNELS; i++)
-		dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i,
-						hsotg->g_tx_fifo_sz[i]);
 
 	hsotg->gadget.max_speed = USB_SPEED_HIGH;
 	hsotg->gadget.ops = &dwc2_hsotg_gadget_ops;
···
 
 	hsotg->ctrl_buff = devm_kzalloc(hsotg->dev,
 			DWC2_CTRL_BUFF_SIZE, GFP_KERNEL);
-	if (!hsotg->ctrl_buff) {
-		dev_err(dev, "failed to allocate ctrl request buff\n");
+	if (!hsotg->ctrl_buff)
 		return -ENOMEM;
-	}
 
 	hsotg->ep0_buff = devm_kzalloc(hsotg->dev,
 			DWC2_CTRL_BUFF_SIZE, GFP_KERNEL);
-	if (!hsotg->ep0_buff) {
-		dev_err(dev, "failed to allocate ctrl reply buff\n");
+	if (!hsotg->ep0_buff)
 		return -ENOMEM;
-	}
 
 	ret = devm_request_irq(hsotg->dev, irq, dwc2_hsotg_irq, IRQF_SHARED,
 				dev_name(hsotg->dev), hsotg);

drivers/usb/dwc2/hcd.c

···
 
 	/* Create new workqueue and init work */
 	retval = -ENOMEM;
-	hsotg->wq_otg = create_singlethread_workqueue("dwc2");
+	hsotg->wq_otg = alloc_ordered_workqueue("dwc2", 0);
 	if (!hsotg->wq_otg) {
 		dev_err(hsotg->dev, "Failed to create workqueue\n");
 		goto error2;

drivers/usb/dwc2/hw.h

···
 #define GOTGCTL_ASESVLD			(1 << 18)
 #define GOTGCTL_DBNC_SHORT		(1 << 17)
 #define GOTGCTL_CONID_B			(1 << 16)
+#define GOTGCTL_DBNCE_FLTR_BYPASS	(1 << 15)
 #define GOTGCTL_DEVHNPEN		(1 << 11)
 #define GOTGCTL_HSTSETHNPEN		(1 << 10)
 #define GOTGCTL_HNPREQ			(1 << 9)

drivers/usb/dwc3/Kconfig

···
 config USB_DWC3
 	tristate "DesignWare USB3 DRD Core Support"
 	depends on (USB || USB_GADGET) && HAS_DMA
-	select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD
+	select USB_XHCI_PLATFORM if USB_XHCI_HCD
 	help
 	  Say Y or M here if your system has a Dual Role SuperSpeed
 	  USB controller based on the DesignWare USB3 IP Core.

drivers/usb/dwc3/core.c

···
 
 #define DWC3_DEFAULT_AUTOSUSPEND_DELAY	5000 /* ms */
 
+/**
+ * dwc3_get_dr_mode - Validates and sets dr_mode
+ * @dwc: pointer to our context structure
+ */
+static int dwc3_get_dr_mode(struct dwc3 *dwc)
+{
+	enum usb_dr_mode mode;
+	struct device *dev = dwc->dev;
+	unsigned int hw_mode;
+
+	if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
+		dwc->dr_mode = USB_DR_MODE_OTG;
+
+	mode = dwc->dr_mode;
+	hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0);
+
+	switch (hw_mode) {
+	case DWC3_GHWPARAMS0_MODE_GADGET:
+		if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) {
+			dev_err(dev,
+				"Controller does not support host mode.\n");
+			return -EINVAL;
+		}
+		mode = USB_DR_MODE_PERIPHERAL;
+		break;
+	case DWC3_GHWPARAMS0_MODE_HOST:
+		if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
+			dev_err(dev,
+				"Controller does not support device mode.\n");
+			return -EINVAL;
+		}
+		mode = USB_DR_MODE_HOST;
+		break;
+	default:
+		if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
+			mode = USB_DR_MODE_HOST;
+		else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
+			mode = USB_DR_MODE_PERIPHERAL;
+	}
+
+	if (mode != dwc->dr_mode) {
+		dev_warn(dev,
+			 "Configuration mismatch. dr_mode forced to %s\n",
+			 mode == USB_DR_MODE_HOST ? "host" : "gadget");
+
+		dwc->dr_mode = mode;
+	}
+
+	return 0;
+}
+
 void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
 {
 	u32 reg;
···
 	if (dwc->dis_u3_susphy_quirk)
 		reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
 
+	if (dwc->dis_del_phy_power_chg_quirk)
+		reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE;
+
 	dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
 
 	reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
···
 		break;
 	}
 
+	switch (dwc->hsphy_mode) {
+	case USBPHY_INTERFACE_MODE_UTMI:
+		reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK |
+		       DWC3_GUSB2PHYCFG_USBTRDTIM_MASK);
+		reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_8_BIT) |
+		       DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_8_BIT);
+		break;
+	case USBPHY_INTERFACE_MODE_UTMIW:
+		reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK |
+		       DWC3_GUSB2PHYCFG_USBTRDTIM_MASK);
+		reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_16_BIT) |
+		       DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_16_BIT);
+		break;
+	default:
+		break;
+	}
+
 	/*
 	 * Above 1.94a, it is recommended to set DWC3_GUSB2PHYCFG_SUSPHY to
 	 * '0' during coreConsultant configuration. So default value will
···
 
 	if (dwc->dis_enblslpm_quirk)
 		reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM;
+
+	if (dwc->dis_u2_freeclk_exists_quirk)
+		reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS;
 
 	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
 
···
 		goto err4;
 	}
 
+	switch (dwc->dr_mode) {
+	case USB_DR_MODE_PERIPHERAL:
+		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
+		break;
+	case USB_DR_MODE_HOST:
+		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
+		break;
+	case USB_DR_MODE_OTG:
+		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
+		break;
+	default:
+		dev_warn(dwc->dev, "Unsupported mode %d\n", dwc->dr_mode);
+		break;
+	}
+
+	/*
+	 * ENDXFER polling is available on version 3.10a and later of
+	 * the DWC_usb3 controller. It is NOT available in the
+	 * DWC_usb31 controller.
+	 */
+	if (!dwc3_is_usb31(dwc) && dwc->revision >= DWC3_REVISION_310A) {
+		reg = dwc3_readl(dwc->regs, DWC3_GUCTL2);
+		reg |= DWC3_GUCTL2_RST_ACTBITLATER;
+		dwc3_writel(dwc->regs, DWC3_GUCTL2, reg);
+	}
+
 	return 0;
 
 err4:
···
 
 	switch (dwc->dr_mode) {
 	case USB_DR_MODE_PERIPHERAL:
-		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
 		ret = dwc3_gadget_init(dwc);
 		if (ret) {
 			if (ret != -EPROBE_DEFER)
···
 		}
 		break;
 	case USB_DR_MODE_HOST:
-		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
 		ret = dwc3_host_init(dwc);
 		if (ret) {
 			if (ret != -EPROBE_DEFER)
···
 		}
 		break;
 	case USB_DR_MODE_OTG:
-		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
 		ret = dwc3_host_init(dwc);
 		if (ret) {
 			if (ret != -EPROBE_DEFER)
···
 
 	dwc->maximum_speed = usb_get_maximum_speed(dev);
 	dwc->dr_mode = usb_get_dr_mode(dev);
+	dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node);
 
 	dwc->has_lpm_erratum = device_property_read_bool(dev,
 				"snps,has-lpm-erratum");
···
 				"snps,dis_enblslpm_quirk");
 	dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev,
 				"snps,dis_rxdet_inp3_quirk");
+	dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev,
+				"snps,dis-u2-freeclk-exists-quirk");
+	dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev,
+				"snps,dis-del-phy-power-chg-quirk");
 
 	dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
 				"snps,tx_de_emphasis_quirk");
···
 		goto err2;
 	}
 
-	if (IS_ENABLED(CONFIG_USB_DWC3_HOST) &&
-			(dwc->dr_mode == USB_DR_MODE_OTG ||
-					dwc->dr_mode == USB_DR_MODE_UNKNOWN))
-		dwc->dr_mode = USB_DR_MODE_HOST;
-	else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET) &&
-			(dwc->dr_mode == USB_DR_MODE_OTG ||
-					dwc->dr_mode == USB_DR_MODE_UNKNOWN))
-		dwc->dr_mode = USB_DR_MODE_PERIPHERAL;
-
-	if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
-		dwc->dr_mode = USB_DR_MODE_OTG;
+	ret = dwc3_get_dr_mode(dwc);
+	if (ret)
+		goto err3;
 
 	ret = dwc3_alloc_scratch_buffers(dwc);
 	if (ret)

drivers/usb/dwc3/core.h

···
 #define DWC3_GPRTBIMAP_HS1	0xc184
 #define DWC3_GPRTBIMAP_FS0	0xc188
 #define DWC3_GPRTBIMAP_FS1	0xc18c
+#define DWC3_GUCTL2		0xc19c
 
 #define DWC3_VER_NUMBER		0xc1a0
 #define DWC3_VER_TYPE		0xc1a4
···
 
 /* Global USB2 PHY Configuration Register */
 #define DWC3_GUSB2PHYCFG_PHYSOFTRST	(1 << 31)
+#define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS	(1 << 30)
 #define DWC3_GUSB2PHYCFG_SUSPHY		(1 << 6)
 #define DWC3_GUSB2PHYCFG_ULPI_UTMI	(1 << 4)
 #define DWC3_GUSB2PHYCFG_ENBLSLPM	(1 << 8)
+#define DWC3_GUSB2PHYCFG_PHYIF(n)	(n << 3)
+#define DWC3_GUSB2PHYCFG_PHYIF_MASK	DWC3_GUSB2PHYCFG_PHYIF(1)
+#define DWC3_GUSB2PHYCFG_USBTRDTIM(n)	(n << 10)
+#define DWC3_GUSB2PHYCFG_USBTRDTIM_MASK	DWC3_GUSB2PHYCFG_USBTRDTIM(0xf)
+#define USBTRDTIM_UTMI_8_BIT		9
+#define USBTRDTIM_UTMI_16_BIT		5
+#define UTMI_PHYIF_16_BIT		1
+#define UTMI_PHYIF_8_BIT		0
 
 /* Global USB2 PHY Vendor Control Register */
 #define DWC3_GUSB2PHYACC_NEWREGREQ	(1 << 25)
···
 #define DWC3_GEVNTSIZ_SIZE(n)		((n) & 0xffff)
 
 /* Global HWPARAMS0 Register */
-#define DWC3_GHWPARAMS0_USB3_MODE(n)	((n) & 0x3)
+#define DWC3_GHWPARAMS0_MODE(n)		((n) & 0x3)
+#define DWC3_GHWPARAMS0_MODE_GADGET	0
+#define DWC3_GHWPARAMS0_MODE_HOST	1
+#define DWC3_GHWPARAMS0_MODE_DRD	2
 #define DWC3_GHWPARAMS0_MBUS_TYPE(n)	(((n) >> 3) & 0x7)
 #define DWC3_GHWPARAMS0_SBUS_TYPE(n)	(((n) >> 6) & 0x3)
 #define DWC3_GHWPARAMS0_MDWIDTH(n)	(((n) >> 8) & 0xff)
···
 /* Global Frame Length Adjustment Register */
 #define DWC3_GFLADJ_30MHZ_SDBND_SEL		(1 << 7)
 #define DWC3_GFLADJ_30MHZ_MASK			0x3f
+
+/* Global User Control Register 2 */
+#define DWC3_GUCTL2_RST_ACTBITLATER		(1 << 14)
 
 /* Device Configuration Register */
 #define DWC3_DCFG_DEVADDR(addr)	((addr) << 3)
···
  * @request: struct usb_request to be transferred
  * @list: a list_head used for request queueing
  * @dep: struct dwc3_ep owning this request
+ * @sg: pointer to first incomplete sg
+ * @num_pending_sgs: counter to pending sgs
  * @first_trb_index: index to first trb used by this request
  * @epnum: endpoint number to which this request refers
  * @trb: pointer to struct dwc3_trb
···
 	struct usb_request	request;
 	struct list_head	list;
 	struct dwc3_ep		*dep;
+	struct scatterlist	*sg;
 
+	unsigned		num_pending_sgs;
 	u8			first_trb_index;
 	u8			epnum;
 	struct dwc3_trb		*trb;
···
  * @maximum_speed: maximum speed requested (mainly for testing purposes)
  * @revision: revision register contents
  * @dr_mode: requested mode of operation
+ * @hsphy_mode: UTMI phy mode, one of following:
+ *		- USBPHY_INTERFACE_MODE_UTMI
+ *		- USBPHY_INTERFACE_MODE_UTMIW
  * @usb2_phy: pointer to USB2 PHY
  * @usb3_phy: pointer to USB3 PHY
  * @usb2_generic_phy: pointer to USB2 PHY
···
  * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy
  * @dis_enblslpm_quirk: set if we clear enblslpm in GUSB2PHYCFG,
  *                      disabling the suspend signal to the PHY.
+ * @dis_u2_freeclk_exists_quirk : set if we clear u2_freeclk_exists
+ *			in GUSB2PHYCFG, specify that USB2 PHY doesn't
+ *			provide a free-running PHY clock.
+ * @dis_del_phy_power_chg_quirk: set if we disable delay phy power
+ *			change quirk.
  * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
  * @tx_de_emphasis: Tx de-emphasis value
  * 	0	- -6dB de-emphasis
···
 	size_t			regs_size;
 
 	enum usb_dr_mode	dr_mode;
+	enum usb_phy_interface	hsphy_mode;
 
 	u32			fladj;
 	u32			irq_gadget;
···
 #define DWC3_REVISION_260A	0x5533260a
 #define DWC3_REVISION_270A	0x5533270a
 #define DWC3_REVISION_280A	0x5533280a
+#define DWC3_REVISION_300A	0x5533300a
+#define DWC3_REVISION_310A	0x5533310a
 
 /*
  * NOTICE: we're using bit 31 as a "is usb 3.1" flag. This is really
···
 	unsigned		dis_u2_susphy_quirk:1;
 	unsigned		dis_enblslpm_quirk:1;
 	unsigned		dis_rxdet_inp3_quirk:1;
+	unsigned		dis_u2_freeclk_exists_quirk:1;
+	unsigned		dis_del_phy_power_chg_quirk:1;
 
 	unsigned		tx_de_emphasis_quirk:1;
 	unsigned		tx_de_emphasis:2;

drivers/usb/dwc3/dwc3-of-simple.c

···
 	int			num_clocks;
 };
 
-static int dwc3_of_simple_probe(struct platform_device *pdev)
+static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count)
 {
-	struct dwc3_of_simple	*simple;
-	struct device		*dev = &pdev->dev;
+	struct device		*dev = simple->dev;
 	struct device_node	*np = dev->of_node;
-
-	unsigned int		count;
-	int			ret;
 	int			i;
 
-	simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL);
-	if (!simple)
-		return -ENOMEM;
-
-	count = of_clk_get_parent_count(np);
-	if (!count)
-		return -ENOENT;
-
 	simple->num_clocks = count;
+
+	if (!count)
+		return 0;
 
 	simple->clks = devm_kcalloc(dev, simple->num_clocks,
 			sizeof(struct clk *), GFP_KERNEL);
 	if (!simple->clks)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, simple);
-	simple->dev = dev;
-
 	for (i = 0; i < simple->num_clocks; i++) {
 		struct clk	*clk;
+		int		ret;
 
 		clk = of_clk_get(np, i);
 		if (IS_ERR(clk)) {
···
 
 		simple->clks[i] = clk;
 	}
+
+	return 0;
+}
+
+static int dwc3_of_simple_probe(struct platform_device *pdev)
+{
+	struct dwc3_of_simple	*simple;
+	struct device		*dev = &pdev->dev;
+	struct device_node	*np = dev->of_node;
+
+	int			ret;
+	int			i;
+
+	simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL);
+	if (!simple)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, simple);
+	simple->dev = dev;
+
+	ret = dwc3_of_simple_clk_init(simple, of_clk_get_parent_count(np));
+	if (ret)
+		return ret;
 
 	ret = of_platform_populate(np, NULL, NULL, dev);
 	if (ret) {
···
 	int			i;
 
 	for (i = 0; i < simple->num_clocks; i++) {
-		clk_unprepare(simple->clks[i]);
+		clk_disable_unprepare(simple->clks[i]);
 		clk_put(simple->clks[i]);
 	}
 
···
 
 static const struct of_device_id of_dwc3_simple_match[] = {
 	{ .compatible = "qcom,dwc3" },
+	{ .compatible = "rockchip,rk3399-dwc3" },
 	{ .compatible = "xlnx,zynqmp-dwc3" },
+	{ .compatible = "cavium,octeon-7130-usb-uctl" },
 	{ /* Sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);

drivers/usb/dwc3/gadget.c

···
 		int status)
 {
 	struct dwc3			*dwc = dep->dwc;
-	int				i;
 
-	if (req->started) {
-		i = 0;
-		do {
-			dwc3_ep_inc_deq(dep);
-		} while(++i < req->request.num_mapped_sgs);
-		req->started = false;
-	}
+	req->started = false;
 	list_del(&req->list);
 	req->trb = NULL;
 
···
 	 * IN transfers due to a mishandled error condition. Synopsys
 	 * STAR 9000614252.
 	 */
-	if (dep->direction && (dwc->revision >= DWC3_REVISION_260A))
+	if (dep->direction && (dwc->revision >= DWC3_REVISION_260A) &&
+	    (dwc->gadget.speed >= USB_SPEED_SUPER))
 		cmd |= DWC3_DEPCMD_CLEARPENDIN;
 
 	memset(&params, 0, sizeof(params));
···
 		params.param0 |= DWC3_DEPCFG_ACTION_INIT;
 	}
 
-	params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN;
+	if (usb_endpoint_xfer_control(desc))
+		params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN;
 
 	if (dep->number <= 1 || usb_endpoint_xfer_isoc(desc))
 		params.param1 |= DWC3_DEPCFG_XFER_NOT_READY_EN;
···
 	kfree(req);
 }
 
+static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep);
+
 /**
  * dwc3_prepare_one_trb - setup one TRB from one request
  * @dep: endpoint for which this request is prepared
···
  */
 static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 		struct dwc3_request *req, dma_addr_t dma,
-		unsigned length, unsigned last, unsigned chain, unsigned node)
+		unsigned length, unsigned chain, unsigned node)
 {
 	struct dwc3_trb		*trb;
 
-	dwc3_trace(trace_dwc3_gadget, "%s: req %p dma %08llx length %d%s%s",
+	dwc3_trace(trace_dwc3_gadget, "%s: req %p dma %08llx length %d%s",
 			dep->name, req, (unsigned long long) dma,
-			length, last ? " last" : "",
-			chain ? " chain" : "");
-
+			length, chain ? " chain" : "");
 
 	trb = &dep->trb_pool[dep->trb_enqueue];
 
···
 	/* always enable Continue on Short Packet */
 	trb->ctrl |= DWC3_TRB_CTRL_CSP;
 
-	if (!req->request.no_interrupt && !chain)
+	if ((!req->request.no_interrupt && !chain) ||
+			(dwc3_calc_trbs_left(dep) == 0))
 		trb->ctrl |= DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_ISP_IMI;
-
-	if (last && !usb_endpoint_xfer_isoc(dep->endpoint.desc))
-		trb->ctrl |= DWC3_TRB_CTRL_LST;
 
 	if (chain)
 		trb->ctrl |= DWC3_TRB_CTRL_CHN;
···
  */
 static struct dwc3_trb *dwc3_ep_prev_trb(struct dwc3_ep *dep, u8 index)
 {
-	if (!index)
-		index = DWC3_TRB_NUM - 2;
-	else
-		index = dep->trb_enqueue - 1;
+	u8 tmp = index;
 
-	return &dep->trb_pool[index];
+	if (!tmp)
+		tmp = DWC3_TRB_NUM - 1;
+
+	return &dep->trb_pool[tmp - 1];
 }
 
 static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
···
 }
 
 static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep,
-		struct dwc3_request *req, unsigned int trbs_left,
-		unsigned int more_coming)
+		struct dwc3_request *req)
 {
-	struct usb_request *request = &req->request;
-	struct scatterlist *sg = request->sg;
+	struct scatterlist *sg = req->sg;
 	struct scatterlist *s;
-	unsigned int	last = false;
 	unsigned int	length;
 	dma_addr_t	dma;
 	int		i;
 
-	for_each_sg(sg, s, request->num_mapped_sgs, i) {
+	for_each_sg(sg, s, req->num_pending_sgs, i) {
 		unsigned chain = true;
 
 		length = sg_dma_len(s);
 		dma = sg_dma_address(s);
 
-		if (sg_is_last(s)) {
-			if (usb_endpoint_xfer_int(dep->endpoint.desc) ||
-				!more_coming)
-				last = true;
-
-			chain = false;
-		}
-
-		if (!trbs_left--)
-			last = true;
-
-		if (last)
+		if (sg_is_last(s))
 			chain = false;
 
 		dwc3_prepare_one_trb(dep, req, dma, length,
-				last, chain, i);
+				chain, i);
 
-		if (last)
+		if (!dwc3_calc_trbs_left(dep))
 			break;
 	}
 }
 
 static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep,
-		struct dwc3_request *req, unsigned int trbs_left,
-		unsigned int more_coming)
+		struct dwc3_request *req)
 {
-	unsigned int	last = false;
 	unsigned int	length;
 	dma_addr_t	dma;
 
 	dma = req->request.dma;
 	length = req->request.length;
 
-	if (!trbs_left)
-		last = true;
-
-	/* Is this the last request? */
-	if (usb_endpoint_xfer_int(dep->endpoint.desc) || !more_coming)
-		last = true;
-
 	dwc3_prepare_one_trb(dep, req, dma, length,
-			last, false, 0);
+			false, 0);
 }
 
 /*
···
 static void dwc3_prepare_trbs(struct dwc3_ep *dep)
 {
 	struct dwc3_request	*req, *n;
-	unsigned int		more_coming;
-	u32			trbs_left;
 
 	BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM);
 
-	trbs_left = dwc3_calc_trbs_left(dep);
-	if (!trbs_left)
+	if (!dwc3_calc_trbs_left(dep))
 		return;
 
-	more_coming = dep->allocated_requests - dep->queued_requests;
-
 	list_for_each_entry_safe(req, n, &dep->pending_list, list) {
-		if (req->request.num_mapped_sgs > 0)
-			dwc3_prepare_one_trb_sg(dep, req, trbs_left--,
-					more_coming);
+		if (req->num_pending_sgs > 0)
+			dwc3_prepare_one_trb_sg(dep, req);
 		else
-			dwc3_prepare_one_trb_linear(dep, req, trbs_left--,
-					more_coming);
+			dwc3_prepare_one_trb_linear(dep, req);
 
-		if (!trbs_left)
+		if (!dwc3_calc_trbs_left(dep))
 			return;
 	}
 }
···
 
 	trace_dwc3_ep_queue(req);
 
-	/*
-	 * We only add to our list of requests now and
-	 * start consuming the list once we get XferNotReady
-	 * IRQ.
-	 *
-	 * That way, we avoid doing anything that we don't need
-	 * to do now and defer it until the point we receive a
-	 * particular token from the Host side.
-	 *
-	 * This will also avoid Host cancelling URBs due to too
-	 * many NAKs.
-	 */
 	ret = usb_gadget_map_request(&dwc->gadget, &req->request,
 			dep->direction);
 	if (ret)
 		return ret;
 
+	req->sg			= req->request.sg;
+	req->num_pending_sgs	= req->request.num_mapped_sgs;
+
 	list_add_tail(&req->list, &dep->pending_list);
 
-	/*
-	 * If there are no pending requests and the endpoint isn't already
-	 * busy, we will just start the request straight away.
-	 *
-	 * This will save one IRQ (XFER_NOT_READY) and possibly make it a
-	 * little bit faster.
-	 */
-	if (!usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
-			!usb_endpoint_xfer_int(dep->endpoint.desc)) {
-		ret = __dwc3_gadget_kick_transfer(dep, 0);
-		goto out;
-	}
-
-	/*
-	 * There are a few special cases:
-	 *
-	 * 1. XferNotReady with empty list of requests. We need to kick the
-	 *    transfer here in that situation, otherwise we will be NAKing
-	 *    forever. If we get XferNotReady before gadget driver has a
-	 *    chance to queue a request, we will ACK the IRQ but won't be
-	 *    able to receive the data until the next request is queued.
-	 *    The following code is handling exactly that.
-	 *
-	 */
-	if (dep->flags & DWC3_EP_PENDING_REQUEST) {
-		/*
-		 * If xfernotready is already elapsed and it is a case
-		 * of isoc transfer, then issue END TRANSFER, so that
-		 * you can receive xfernotready again and can have
-		 * notion of current microframe.
-		 */
-		if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
-			if (list_empty(&dep->started_list)) {
-				dwc3_stop_active_transfer(dwc, dep->number, true);
-				dep->flags = DWC3_EP_ENABLED;
-			}
-			return 0;
-		}
-
-		ret = __dwc3_gadget_kick_transfer(dep, 0);
-		if (!ret)
-			dep->flags &= ~DWC3_EP_PENDING_REQUEST;
-
-		goto out;
-	}
-
-	/*
-	 * 2. XferInProgress on Isoc EP with an active transfer. We need to
-	 *    kick the transfer here after queuing a request, otherwise the
-	 *    core may not see the modified TRB(s).
-	 */
 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
-			(dep->flags & DWC3_EP_BUSY) &&
-			!(dep->flags & DWC3_EP_MISSED_ISOC)) {
-		WARN_ON_ONCE(!dep->resource_index);
-		ret = __dwc3_gadget_kick_transfer(dep, dep->resource_index);
-		goto out;
+			dep->flags & DWC3_EP_PENDING_REQUEST) {
+		if (list_empty(&dep->started_list)) {
+			dwc3_stop_active_transfer(dwc, dep->number, true);
+			dep->flags = DWC3_EP_ENABLED;
+		}
+		return 0;
 	}
 
-	/*
-	 * 4. Stream Capable Bulk Endpoints. We need to start the transfer
-	 * right away, otherwise host will not know we have streams to be
-	 * handled.
-	 */
-	if (dep->stream_capable)
-		ret = __dwc3_gadget_kick_transfer(dep, 0);
+	if (!dwc3_calc_trbs_left(dep))
+		return 0;
 
-out:
+	ret = __dwc3_gadget_kick_transfer(dep, 0);
 	if (ret && ret != -EBUSY)
 		dwc3_trace(trace_dwc3_gadget,
 				"%s: failed to kick transfers",
···
 	unsigned int		trb_status;
 
 	dep->queued_requests--;
+	dwc3_ep_inc_deq(dep);
 	trace_dwc3_complete_trb(dep, trb);
 
 	/*
···
 		return 1;
 
 	count = trb->size & DWC3_TRB_SIZE_MASK;
+	req->request.actual += count;
 
 	if (dep->direction) {
 		if (count) {
···
 
 	if (s_pkt && !chain)
 		return 1;
-	if ((event->status & DEPEVT_STATUS_LST) &&
-			(trb->ctrl & (DWC3_TRB_CTRL_LST |
-				DWC3_TRB_CTRL_HWO)))
-		return 1;
+
 	if ((event->status & DEPEVT_STATUS_IOC) &&
 			(trb->ctrl & DWC3_TRB_CTRL_IOC))
 		return 1;
+
 	return 0;
 }
 
 static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
 		const struct dwc3_event_depevt *event, int status)
 {
-	struct dwc3_request	*req;
+	struct dwc3_request	*req, *n;
 	struct dwc3_trb		*trb;
-	unsigned int		slot;
-	unsigned int		i;
-	int			count = 0;
+	bool			ioc = false;
 	int			ret;
 
-	do {
+	list_for_each_entry_safe(req, n, &dep->started_list, list) {
+		unsigned length;
+		unsigned actual;
 		int chain;
 
-		req = next_request(&dep->started_list);
-		if (WARN_ON_ONCE(!req))
-			return 1;
+		length = req->request.length;
+		chain = req->num_pending_sgs > 0;
+		if (chain) {
+			struct scatterlist *sg = req->sg;
+			struct scatterlist *s;
+			unsigned int pending = req->num_pending_sgs;
+			unsigned int i;
 
-		chain = req->request.num_mapped_sgs > 0;
-		i = 0;
-		do {
-			slot = req->first_trb_index + i;
-			if (slot == DWC3_TRB_NUM - 1)
-				slot++;
-			slot %= DWC3_TRB_NUM;
-			trb = &dep->trb_pool[slot];
-			count += trb->size & DWC3_TRB_SIZE_MASK;
+			for_each_sg(sg, s, pending, i) {
+				trb = &dep->trb_pool[dep->trb_dequeue];
 
+				req->sg = sg_next(s);
+				req->num_pending_sgs--;
+
+				ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb,
+						event, status, chain);
+				if (ret)
+					break;
+			}
+		} else {
+			trb = &dep->trb_pool[dep->trb_dequeue];
 			ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb,
 					event, status, chain);
-			if (ret)
-				break;
-		} while (++i < req->request.num_mapped_sgs);
+		}
 
 		/*
 		 * We assume here we will always receive the entire data block
···
 		 * should receive and we simply bounce the request back to the
 		 * gadget driver for further processing.
 		 */
-		req->request.actual += req->request.length - count;
+		actual = length - req->request.actual;
+		req->request.actual = actual;
+
+		if (ret && chain && (actual < length) && req->num_pending_sgs)
+			return __dwc3_gadget_kick_transfer(dep, 0);
+
 		dwc3_gadget_giveback(dep, req, status);
 
-		if (ret)
+		if (ret) {
+			if ((event->status & DEPEVT_STATUS_IOC) &&
+			    (trb->ctrl & DWC3_TRB_CTRL_IOC))
+				ioc = true;
 			break;
-	} while (1);
+		}
+	}
 
 	/*
 	 * Our endpoint might get disabled by another thread during
···
 		return 1;
 	}
 
-	if (usb_endpoint_xfer_isoc(dep->endpoint.desc))
-		if ((event->status & DEPEVT_STATUS_IOC) &&
-				(trb->ctrl & DWC3_TRB_CTRL_IOC))
-			return 0;
+	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && ioc)
+		return 0;
+
 	return 1;
 }
 
···
 	 *
 	 * - Issue EndTransfer WITH CMDIOC bit set
 	 * - Wait 100us
+	 *
+	 * As of IP version 3.10a of the DWC_usb3 IP, the controller
+	 * supports a mode to work around the above limitation. The
+	 * software can poll the CMDACT bit in the DEPCMD register
+	 * after issuing a EndTransfer command. This mode is enabled
+	 * by writing GUCTL2[14]. This polling is already done in the
+	 * dwc3_send_gadget_ep_cmd() function so if the mode is
+	 * enabled, the EndTransfer command will have completed upon
+	 * returning from this function and we don't need to delay for
+	 * 100us.
+	 *
+	 * This mode is NOT available on the DWC_usb31 IP.
 	 */
 
 	cmd = DWC3_DEPCMD_ENDTRANSFER;
···
 	WARN_ON_ONCE(ret);
 	dep->resource_index = 0;
 	dep->flags &= ~DWC3_EP_BUSY;
-	udelay(100);
+
+	if (dwc3_is_usb31(dwc) || dwc->revision < DWC3_REVISION_310A)
+		udelay(100);
 }
 
 static void dwc3_stop_active_transfers(struct dwc3 *dwc)

drivers/usb/dwc3/ulpi.c

···
 	return -ETIMEDOUT;
 }
 
-static int dwc3_ulpi_read(struct ulpi_ops *ops, u8 addr)
+static int dwc3_ulpi_read(struct device *dev, u8 addr)
 {
-	struct dwc3 *dwc = dev_get_drvdata(ops->dev);
+	struct dwc3 *dwc = dev_get_drvdata(dev);
 	u32 reg;
 	int ret;
 
···
 	return DWC3_GUSB2PHYACC_DATA(reg);
 }
 
-static int dwc3_ulpi_write(struct ulpi_ops *ops, u8 addr, u8 val)
+static int dwc3_ulpi_write(struct device *dev, u8 addr, u8 val)
 {
-	struct dwc3 *dwc = dev_get_drvdata(ops->dev);
+	struct dwc3 *dwc = dev_get_drvdata(dev);
 	u32 reg;
 
 	reg = DWC3_GUSB2PHYACC_NEWREGREQ | DWC3_ULPI_ADDR(addr);
···
 	return dwc3_ulpi_busyloop(dwc);
 }
 
-static struct ulpi_ops dwc3_ulpi_ops = {
+static const struct ulpi_ops dwc3_ulpi_ops = {
 	.read = dwc3_ulpi_read,
 	.write = dwc3_ulpi_write,
 };

drivers/usb/gadget/Kconfig

···
 config USB_F_TCM
 	tristate
 
-choice
-	tristate "USB Gadget Drivers"
-	default USB_ETH
-	help
-	  A Linux "Gadget Driver" talks to the USB Peripheral Controller
-	  driver through the abstract "gadget" API.  Some other operating
-	  systems call these "client" drivers, of which "class drivers"
-	  are a subset (implementing a USB device class specification).
-	  A gadget driver implements one or more USB functions using
-	  the peripheral hardware.
-
-	  Gadget drivers are hardware-neutral, or "platform independent",
-	  except that they sometimes must understand quirks or limitations
-	  of the particular controllers they work with.  For example, when
-	  a controller doesn't support alternate configurations or provide
-	  enough of the right types of endpoints, the gadget driver might
-	  not be able work with that controller, or might need to implement
-	  a less common variant of a device class protocol.
-
 # this first set of drivers all depend on bulk-capable hardware.
 
 config USB_CONFIGFS
···
 config USB_CONFIGFS_F_UVC
 	bool "USB Webcam function"
 	depends on USB_CONFIGFS
+	depends on VIDEO_V4L2
 	depends on VIDEO_DEV
 	select VIDEOBUF2_VMALLOC
 	select USB_F_UVC
···
 	  interface 0 (primary) and UAS is on alternative interface 1.
 	  Both protocols can work on USB2.0 and USB3.0.
 	  UAS utilizes the USB 3.0 feature called streams support.
+
+choice
+	tristate "USB Gadget Drivers"
+	default USB_ETH
+	help
+	  A Linux "Gadget Driver" talks to the USB Peripheral Controller
+	  driver through the abstract "gadget" API.  Some other operating
+	  systems call these "client" drivers, of which "class drivers"
+	  are a subset (implementing a USB device class specification).
+	  A gadget driver implements one or more USB functions using
+	  the peripheral hardware.
+
+	  Gadget drivers are hardware-neutral, or "platform independent",
+	  except that they sometimes must understand quirks or limitations
+	  of the particular controllers they work with.  For example, when
+	  a controller doesn't support alternate configurations or provide
+	  enough of the right types of endpoints, the gadget driver might
+	  not be able work with that controller, or might need to implement
+	  a less common variant of a device class protocol.
 
 source "drivers/usb/gadget/legacy/Kconfig"
 

drivers/usb/gadget/composite.c

···
 		/* functions always handle their interfaces and endpoints...
 		 * punt other recipients (other, WUSB, ...) to the current
 		 * configuration code.
-		 *
-		 * REVISIT it could make sense to let the composite device
-		 * take such requests too, if that's ever needed:  to work
-		 * in config 0, etc.
 		 */
 		if (cdev->config) {
 			list_for_each_entry(f, &cdev->config->functions, list)
-				if (f->req_match && f->req_match(f, ctrl))
+				if (f->req_match &&
+				    f->req_match(f, ctrl, false))
 					goto try_fun_setup;
-			f = NULL;
+		} else {
+			struct usb_configuration *c;
+			list_for_each_entry(c, &cdev->configs, list)
+				list_for_each_entry(f, &c->functions, list)
+					if (f->req_match &&
+					    f->req_match(f, ctrl, true))
+						goto try_fun_setup;
 		}
+		f = NULL;
 
 		switch (ctrl->bRequestType & USB_RECIP_MASK) {
 		case USB_RECIP_INTERFACE:

drivers/usb/gadget/configfs.c

···
 
 			list_move_tail(&f->list, &cfg->func_list);
 			if (f->unbind) {
-				dev_err(&gi->cdev.gadget->dev, "unbind function"
-						" '%s'/%p\n", f->name, f);
+				dev_dbg(&gi->cdev.gadget->dev,
+				         "unbind function '%s'/%p\n",
+				         f->name, f);
 				f->unbind(c, f);
 			}
 		}

drivers/usb/gadget/function/f_fs.c

···
 static void ffs_func_disable(struct usb_function *);
 static int ffs_func_setup(struct usb_function *,
 			  const struct usb_ctrlrequest *);
+static bool ffs_func_req_match(struct usb_function *,
+			       const struct usb_ctrlrequest *,
+			       bool config0);
 static void ffs_func_suspend(struct usb_function *);
 static void ffs_func_resume(struct usb_function *);
 
···
 			      FUNCTIONFS_HAS_SS_DESC |
 			      FUNCTIONFS_HAS_MS_OS_DESC |
 			      FUNCTIONFS_VIRTUAL_ADDR |
-			      FUNCTIONFS_EVENTFD)) {
+			      FUNCTIONFS_EVENTFD |
+			      FUNCTIONFS_ALL_CTRL_RECIP |
+			      FUNCTIONFS_CONFIG0_SETUP)) {
 			ret = -ENOSYS;
 			goto error;
 		}
···
 	 * handle them.  All other either handled by composite or
 	 * passed to usb_configuration->setup() (if one is set).  No
 	 * matter, we will handle requests directed to endpoint here
-	 * as well (as it's straightforward) but what to do with any
-	 * other request?
+	 * as well (as it's straightforward).  Other request recipient
+	 * types are only handled when the user flag FUNCTIONFS_ALL_CTRL_RECIP
+	 * is being used.
 	 */
 	if (ffs->state != FFS_ACTIVE)
 		return -ENODEV;
···
 		break;
 
 	default:
-		return -EOPNOTSUPP;
+		if (func->ffs->user_flags & FUNCTIONFS_ALL_CTRL_RECIP)
+			ret = le16_to_cpu(creq->wIndex);
+		else
+			return -EOPNOTSUPP;
 	}
 
 	spin_lock_irqsave(&ffs->ev.waitq.lock, flags);
···
 	spin_unlock_irqrestore(&ffs->ev.waitq.lock, flags);
 
 	return 0;
+}
+
+static bool ffs_func_req_match(struct usb_function *f,
+			       const struct usb_ctrlrequest *creq,
+			       bool config0)
+{
+	struct ffs_function *func = ffs_func_from_usb(f);
+
+	if (config0 && !(func->ffs->user_flags & FUNCTIONFS_CONFIG0_SETUP))
+		return false;
+
+	switch (creq->bRequestType & USB_RECIP_MASK) {
+	case USB_RECIP_INTERFACE:
+		return ffs_func_revmap_intf(func,
+					    le16_to_cpu(creq->wIndex) >= 0);
+	case USB_RECIP_ENDPOINT:
+		return ffs_func_revmap_ep(func,
+					  le16_to_cpu(creq->wIndex) >= 0);
+	default:
+		return (bool) (func->ffs->user_flags &
+			       FUNCTIONFS_ALL_CTRL_RECIP);
+	}
 }
 
 static void ffs_func_suspend(struct usb_function *f)
···
 	func->function.set_alt = ffs_func_set_alt;
 	func->function.disable = ffs_func_disable;
 	func->function.setup   = ffs_func_setup;
+	func->function.req_match = ffs_func_req_match;
 	func->function.suspend = ffs_func_suspend;
 	func->function.resume  = ffs_func_resume;
 	func->function.free_func = ffs_free;
···
 	list_del(&dev->entry);
 	if (dev->name_allocated)
 		kfree(dev->name);
+
+	/* Clear the private_data pointer to stop incorrect dev access */
+	if (dev->ffs_data)
+		dev->ffs_data->private_data = NULL;
+
 	kfree(dev);
 	if (list_empty(&ffs_devices))
 		functionfs_cleanup();

drivers/usb/gadget/function/f_hid.c

···
 static inline struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep,
 						    unsigned length)
 {
-	return alloc_ep_req(ep, length, length);
+	return alloc_ep_req(ep, length);
 }
 
 static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req)
···
 
 	/* preallocate request and buffer */
 	status = -ENOMEM;
-	hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL);
+	hidg->req = alloc_ep_req(hidg->in_ep, hidg->report_length);
 	if (!hidg->req)
-		goto fail;
-
-	hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL);
-	if (!hidg->req->buf)
 		goto fail;
 
 	/* set descriptor dynamic values */
···
 	usb_free_all_descriptors(f);
 fail:
 	ERROR(f->config->cdev, "hidg_bind FAILED\n");
-	if (hidg->req != NULL) {
-		kfree(hidg->req->buf);
-		if (hidg->in_ep != NULL)
-			usb_ep_free_request(hidg->in_ep, hidg->req);
-	}
+	if (hidg->req != NULL)
+		free_ep_req(hidg->in_ep, hidg->req);
 
 	return status;
 }
···
 
 CONFIGFS_ATTR(f_hid_opts_, report_desc);
 
+static ssize_t f_hid_opts_dev_show(struct config_item *item, char *page)
+{
+	struct f_hid_opts *opts = to_f_hid_opts(item);
+
+	return sprintf(page, "%d:%d\n", major, opts->minor);
+}
+
+CONFIGFS_ATTR_RO(f_hid_opts_, dev);
+
 static struct configfs_attribute *hid_attrs[] = {
 	&f_hid_opts_attr_subclass,
 	&f_hid_opts_attr_protocol,
 	&f_hid_opts_attr_report_length,
 	&f_hid_opts_attr_report_desc,
+	&f_hid_opts_attr_dev,
 	NULL,
 };
 
···
 
 	/* disable/free request and end point */
 	usb_ep_disable(hidg->in_ep);
-	kfree(hidg->req->buf);
-	usb_ep_free_request(hidg->in_ep, hidg->req);
+	free_ep_req(hidg->in_ep, hidg->req);
 
 	usb_free_all_descriptors(f);
 }

drivers/usb/gadget/function/f_loopback.c

···
 
 static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len)
 {
-	struct f_loopback	*loop = ep->driver_data;
-
-	return alloc_ep_req(ep, len, loop->buflen);
+	return alloc_ep_req(ep, len);
 }
 
 static int alloc_requests(struct usb_composite_dev *cdev,
···
 		if (!in_req)
 			goto fail;
 
-		out_req = lb_alloc_ep_req(loop->out_ep, 0);
+		out_req = lb_alloc_ep_req(loop->out_ep, loop->buflen);
 		if (!out_req)
 			goto fail_in;
 
···
 
 int __init lb_modinit(void)
 {
-	int ret;
-
-	ret = usb_function_register(&Loopbackusb_func);
-	if (ret)
-		return ret;
-	return ret;
+	return usb_function_register(&Loopbackusb_func);
 }
+
 void __exit lb_modexit(void)
 {
 	usb_function_unregister(&Loopbackusb_func);

drivers/usb/gadget/function/f_mass_storage.c

···
 	/* Gadget's private data. */
 	void			*private_data;
 
-	/*
-	 * Vendor (8 chars), product (16 chars), release (4
-	 * hexadecimal digits) and NUL byte
-	 */
-	char inquiry_string[8 + 16 + 4 + 1];
+	char inquiry_string[INQUIRY_STRING_LEN];
 
 	struct kref		ref;
 };
···
 	buf[5] = 0;		/* No special options */
 	buf[6] = 0;
 	buf[7] = 0;
-	memcpy(buf + 8, common->inquiry_string, sizeof common->inquiry_string);
+	if (curlun->inquiry_string[0])
+		memcpy(buf + 8, curlun->inquiry_string,
+		       sizeof(curlun->inquiry_string));
+	else
+		memcpy(buf + 8, common->inquiry_string,
+		       sizeof(common->inquiry_string));
 	return 36;
 }
 
···
 
 CONFIGFS_ATTR(fsg_lun_opts_, nofua);
 
+static ssize_t fsg_lun_opts_inquiry_string_show(struct config_item *item,
+						char *page)
+{
+	return fsg_show_inquiry_string(to_fsg_lun_opts(item)->lun, page);
+}
+
+static ssize_t fsg_lun_opts_inquiry_string_store(struct config_item *item,
+						 const char *page, size_t len)
+{
+	return fsg_store_inquiry_string(to_fsg_lun_opts(item)->lun, page, len);
+}
+
+CONFIGFS_ATTR(fsg_lun_opts_, inquiry_string);
+
 static struct configfs_attribute *fsg_lun_attrs[] = {
 	&fsg_lun_opts_attr_file,
 	&fsg_lun_opts_attr_ro,
 	&fsg_lun_opts_attr_removable,
 	&fsg_lun_opts_attr_cdrom,
 	&fsg_lun_opts_attr_nofua,
+	&fsg_lun_opts_attr_inquiry_string,
 	NULL,
 };
 

drivers/usb/gadget/function/f_mass_storage.h

···
 	char removable;
 	char cdrom;
 	char nofua;
+	char inquiry_string[INQUIRY_STRING_LEN];
 };
 
 struct fsg_config {

drivers/usb/gadget/function/f_midi.c

···
  */
 #define MAX_PORTS 16
 
+/* MIDI message states */
+enum {
+	STATE_INITIAL = 0,	/* pseudo state */
+	STATE_1PARAM,
+	STATE_2PARAM_1,
+	STATE_2PARAM_2,
+	STATE_SYSEX_0,
+	STATE_SYSEX_1,
+	STATE_SYSEX_2,
+	STATE_REAL_TIME,
+	STATE_FINISHED,		/* pseudo state */
+};
+
 /*
  * This is a gadget, and the IN/OUT naming is from the host's perspective.
  * USB -> OUT endpoint -> rawmidi
···
 	int active;
 	uint8_t cable;
 	uint8_t state;
-#define STATE_UNKNOWN	0
-#define STATE_1PARAM	1
-#define STATE_2PARAM_1	2
-#define STATE_2PARAM_2	3
-#define STATE_SYSEX_0	4
-#define STATE_SYSEX_1	5
-#define STATE_SYSEX_2	6
 	uint8_t data[2];
 };
 
···
 static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep,
 						    unsigned length)
 {
-	return alloc_ep_req(ep, length, length);
+	return alloc_ep_req(ep, length);
 }
 
 static const uint8_t f_midi_cin_length[] = {
···
 	}
 }
 
+static void f_midi_drop_out_substreams(struct f_midi *midi)
+{
+	unsigned int i;
+
+	for (i = 0; i < midi->in_ports; i++) {
+		struct gmidi_in_port *port = midi->in_ports_array + i;
+		struct snd_rawmidi_substream *substream = port->substream;
+
+		if (port->active && substream)
+			snd_rawmidi_drop_output(substream);
+	}
+}
+
 static int f_midi_start_ep(struct f_midi *midi,
 			   struct usb_function *f,
 			   struct usb_ep *ep)
···
 	/* allocate a bunch of read buffers and queue them all at once. */
 	for (i = 0; i < midi->qlen && err == 0; i++) {
 		struct usb_request *req =
-			midi_alloc_ep_req(midi->out_ep,
-				max_t(unsigned, midi->buflen,
-					bulk_out_desc.wMaxPacketSize));
+			midi_alloc_ep_req(midi->out_ep, midi->buflen);
+
 		if (req == NULL)
 			return -ENOMEM;
 
···
 	/* release IN requests */
 	while (kfifo_get(&midi->in_req_fifo, &req))
 		free_ep_req(midi->in_ep, req);
+
+	f_midi_drop_out_substreams(midi);
 }
 
 static int f_midi_snd_free(struct snd_device *device)
 {
 	return 0;
-}
-
-static void f_midi_transmit_packet(struct usb_request *req, uint8_t p0,
-					uint8_t p1, uint8_t p2, uint8_t p3)
-{
-	unsigned length = req->length;
-	u8 *buf = (u8 *)req->buf + length;
-
-	buf[0] = p0;
-	buf[1] = p1;
-	buf[2] = p2;
-	buf[3] = p3;
-	req->length = length + 4;
 }
 
 /*
···
 static void f_midi_transmit_byte(struct usb_request *req,
 				 struct gmidi_in_port *port, uint8_t b)
 {
-	uint8_t p0 = port->cable << 4;
+	uint8_t p[4] = { port->cable << 4, 0, 0, 0 };
+	uint8_t next_state = STATE_INITIAL;
 
-	if (b >= 0xf8) {
-		f_midi_transmit_packet(req, p0 | 0x0f, b, 0, 0);
-	} else if (b >= 0xf0) {
+	switch (b) {
+	case 0xf8 ... 0xff:
+		/* System Real-Time Messages */
+		p[0] |= 0x0f;
+		p[1] = b;
+		next_state = port->state;
+		port->state = STATE_REAL_TIME;
+		break;
+
+	case 0xf7:
+		/* End of SysEx */
+		switch (port->state) {
+		case STATE_SYSEX_0:
+			p[0] |= 0x05;
+			p[1] = 0xf7;
+			next_state = STATE_FINISHED;
+			break;
+		case STATE_SYSEX_1:
+			p[0] |= 0x06;
+			p[1] = port->data[0];
+			p[2] = 0xf7;
+			next_state = STATE_FINISHED;
+			break;
+		case STATE_SYSEX_2:
+			p[0] |= 0x07;
+			p[1] = port->data[0];
+			p[2] = port->data[1];
+			p[3] = 0xf7;
+			next_state = STATE_FINISHED;
+			break;
+		default:
+			/* Ignore byte */
+			next_state = port->state;
+			port->state = STATE_INITIAL;
+		}
+		break;
+
+	case 0xf0 ... 0xf6:
+		/* System Common Messages */
+		port->data[0] = port->data[1] = 0;
+		port->state = STATE_INITIAL;
 		switch (b) {
 		case 0xf0:
 			port->data[0] = b;
-			port->state = STATE_SYSEX_1;
+			port->data[1] = 0;
+			next_state = STATE_SYSEX_1;
 			break;
 		case 0xf1:
 		case 0xf3:
 			port->data[0] = b;
-			port->state = STATE_1PARAM;
+			next_state = STATE_1PARAM;
 			break;
 		case 0xf2:
 			port->data[0] = b;
-			port->state = STATE_2PARAM_1;
+			next_state = STATE_2PARAM_1;
 			break;
 		case 0xf4:
 		case 0xf5:
-			port->state = STATE_UNKNOWN;
+			next_state = STATE_INITIAL;
 			break;
 		case 0xf6:
-			f_midi_transmit_packet(req, p0 | 0x05, 0xf6, 0, 0);
-			port->state = STATE_UNKNOWN;
-			break;
-		case 0xf7:
-			switch (port->state) {
-			case STATE_SYSEX_0:
-				f_midi_transmit_packet(req,
-					p0 | 0x05, 0xf7, 0, 0);
-				break;
-			case STATE_SYSEX_1:
-				f_midi_transmit_packet(req,
-					p0 | 0x06, port->data[0], 0xf7, 0);
-				break;
-			case STATE_SYSEX_2:
-				f_midi_transmit_packet(req,
-					p0 | 0x07, port->data[0],
-					port->data[1], 0xf7);
-				break;
-			}
-			port->state = STATE_UNKNOWN;
+			p[0] |= 0x05;
+			p[1] = 0xf6;
+			next_state = STATE_FINISHED;
 			break;
 		}
-	} else if (b >= 0x80) {
+		break;
+
+	case 0x80 ... 0xef:
+		/*
+		 * Channel Voice Messages, Channel Mode Messages
+		 * and Control Change Messages.
+		 */
 		port->data[0] = b;
+		port->data[1] = 0;
+		port->state = STATE_INITIAL;
 		if (b >= 0xc0 && b <= 0xdf)
-			port->state = STATE_1PARAM;
+			next_state = STATE_1PARAM;
 		else
-			port->state = STATE_2PARAM_1;
-	} else { /* b < 0x80 */
+			next_state = STATE_2PARAM_1;
+		break;
+
+	case 0x00 ... 0x7f:
+		/* Message parameters */
 		switch (port->state) {
 		case STATE_1PARAM:
-			if (port->data[0] < 0xf0) {
-				p0 |= port->data[0] >> 4;
-			} else {
-				p0 |= 0x02;
-				port->state = STATE_UNKNOWN;
-			}
-			f_midi_transmit_packet(req, p0, port->data[0], b, 0);
+			if (port->data[0] < 0xf0)
+				p[0] |= port->data[0] >> 4;
+			else
+				p[0] |= 0x02;
+
+			p[1] = port->data[0];
+			p[2] = b;
+			/* This is to allow Running State Messages */
+			next_state = STATE_1PARAM;
 			break;
 		case STATE_2PARAM_1:
 			port->data[1] = b;
-			port->state = STATE_2PARAM_2;
+			next_state = STATE_2PARAM_2;
 			break;
 		case STATE_2PARAM_2:
-			if (port->data[0] < 0xf0) {
-				p0 |= port->data[0] >> 4;
-				port->state = STATE_2PARAM_1;
-			} else {
-				p0 |= 0x03;
-				port->state = STATE_UNKNOWN;
-			}
-			f_midi_transmit_packet(req,
-				p0, port->data[0], port->data[1], b);
+			if (port->data[0] < 0xf0)
+				p[0] |= port->data[0] >> 4;
+			else
+				p[0] |= 0x03;
+
+			p[1] = port->data[0];
+			p[2] = port->data[1];
+			p[3] = b;
+			/* This is to allow Running State Messages */
+			next_state = STATE_2PARAM_1;
 			break;
 		case STATE_SYSEX_0:
 			port->data[0] = b;
-			port->state = STATE_SYSEX_1;
+			next_state = STATE_SYSEX_1;
 			break;
 		case STATE_SYSEX_1:
 			port->data[1] = b;
-			port->state = STATE_SYSEX_2;
+			next_state = STATE_SYSEX_2;
 			break;
 		case STATE_SYSEX_2:
-			f_midi_transmit_packet(req,
-				p0 | 0x04, port->data[0], port->data[1], b);
-			port->state = STATE_SYSEX_0;
+			p[0] |= 0x04;
+			p[1] = port->data[0];
+			p[2] = port->data[1];
+			p[3] = b;
+			next_state = STATE_SYSEX_0;
 			break;
 		}
+		break;
 	}
-}
 
-static void f_midi_drop_out_substreams(struct f_midi *midi)
-{
-	unsigned int i;
+	/* States where we have to write into the USB request */
+	if (next_state == STATE_FINISHED ||
+	    port->state == STATE_SYSEX_2 ||
+	    port->state == STATE_1PARAM ||
+	    port->state == STATE_2PARAM_2 ||
+	    port->state == STATE_REAL_TIME) {
 
-	for (i = 0; i < midi->in_ports; i++) {
-		struct gmidi_in_port *port = midi->in_ports_array + i;
-		struct snd_rawmidi_substream *substream = port->substream;
-		if (port->active && substream)
-			snd_rawmidi_drop_output(substream);
+		unsigned int length = req->length;
+		u8 *buf = (u8 *)req->buf + length;
+
+		memcpy(buf, p, sizeof(p));
+		req->length = length + sizeof(p);
+
+		if (next_state == STATE_FINISHED) {
+			next_state = STATE_INITIAL;
+			port->data[0] = port->data[1] = 0;
+		}
 	}
+
+	port->state = next_state;
 }
 
 static int f_midi_do_transmit(struct f_midi *midi, struct usb_ep *ep)
···
 	VDBG(midi, "%s()\n", __func__);
 	port = midi->in_ports_array + substream->number;
 	port->substream = substream;
-	port->state = STATE_UNKNOWN;
+	port->state = STATE_INITIAL;
 	return 0;
 }
 
···
 	opts->func_inst.free_func_inst = f_midi_free_inst;
 	opts->index = SNDRV_DEFAULT_IDX1;
 	opts->id = SNDRV_DEFAULT_STR1;
-	opts->buflen = 256;
+	opts->buflen = 512;
 	opts->qlen = 32;
 	opts->in_ports = 1;
 	opts->out_ports = 1;

drivers/usb/gadget/function/f_ncm.c

···
 /* peak (theoretical) bulk transfer rate in bits-per-second */
 static inline unsigned ncm_bitrate(struct usb_gadget *g)
 {
-	if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
+	if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER)
+		return 13 * 1024 * 8 * 1000 * 8;
+	else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
 		return 13 * 512 * 8 * 1000 * 8;
 	else
 		return 19 *  64 * 1 * 1000 * 8;
···
 	(struct usb_descriptor_header *) &ncm_data_intf,
 	(struct usb_descriptor_header *) &hs_ncm_in_desc,
 	(struct usb_descriptor_header *) &hs_ncm_out_desc,
+	NULL,
+};
+
+
+/* super speed support: */
+
+static struct usb_endpoint_descriptor ss_ncm_notify_desc = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+
+	.bEndpointAddress =	USB_DIR_IN,
+	.bmAttributes =		USB_ENDPOINT_XFER_INT,
+	.wMaxPacketSize =	cpu_to_le16(NCM_STATUS_BYTECOUNT),
+	.bInterval =		USB_MS_TO_HS_INTERVAL(NCM_STATUS_INTERVAL_MS)
+};
+
+static struct usb_ss_ep_comp_descriptor ss_ncm_notify_comp_desc = {
+	.bLength =		sizeof(ss_ncm_notify_comp_desc),
+	.bDescriptorType =	USB_DT_SS_ENDPOINT_COMP,
+
+	/* the following 3 values can be tweaked if necessary */
+	/* .bMaxBurst =		0, */
+	/* .bmAttributes =	0, */
+	.wBytesPerInterval =	cpu_to_le16(NCM_STATUS_BYTECOUNT),
+};
+
+static struct usb_endpoint_descriptor ss_ncm_in_desc = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+
+	.bEndpointAddress =	USB_DIR_IN,
+	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
+	.wMaxPacketSize =	cpu_to_le16(1024),
+};
+
+static struct usb_endpoint_descriptor ss_ncm_out_desc = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+
+	.bEndpointAddress =	USB_DIR_OUT,
+	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
+	.wMaxPacketSize =	cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor ss_ncm_bulk_comp_desc = {
+	.bLength =		sizeof(ss_ncm_bulk_comp_desc),
+	.bDescriptorType =	USB_DT_SS_ENDPOINT_COMP,
+
+	/* the following 2 values can be tweaked if necessary */
+	/* .bMaxBurst =		0, */
+	/* .bmAttributes =	0, */
+};
+
+static struct usb_descriptor_header *ncm_ss_function[] = {
+	(struct usb_descriptor_header *) &ncm_iad_desc,
+	/* CDC NCM control descriptors */
+	(struct usb_descriptor_header *) &ncm_control_intf,
+	(struct usb_descriptor_header *) &ncm_header_desc,
+	(struct usb_descriptor_header *) &ncm_union_desc,
+	(struct usb_descriptor_header *) &ecm_desc,
+	(struct usb_descriptor_header *) &ncm_desc,
+	(struct usb_descriptor_header *) &ss_ncm_notify_desc,
+	(struct usb_descriptor_header *) &ss_ncm_notify_comp_desc,
+	/* data interface, altsettings 0 and 1 */
+	(struct usb_descriptor_header *) &ncm_data_nop_intf,
+	(struct usb_descriptor_header *) &ncm_data_intf,
+	(struct usb_descriptor_header *) &ss_ncm_in_desc,
+	(struct usb_descriptor_header *) &ss_ncm_bulk_comp_desc,
+	(struct usb_descriptor_header *) &ss_ncm_out_desc,
+	(struct usb_descriptor_header *) &ss_ncm_bulk_comp_desc,
 	NULL,
 };
 
···
 			 */
 			ncm->port.is_zlp_ok =
 				gadget_is_zlp_supported(cdev->gadget);
+			ncm->port.no_skb_reserve =
+				gadget_avoids_skb_reserve(cdev->gadget);
 			ncm->port.cdc_filter = DEFAULT_FILTER;
 			DBG(cdev, "activate ncm\n");
 			net = gether_connect(&ncm->port);
···
 	hs_ncm_notify_desc.bEndpointAddress =
 		fs_ncm_notify_desc.bEndpointAddress;
 
+	ss_ncm_in_desc.bEndpointAddress = fs_ncm_in_desc.bEndpointAddress;
+	ss_ncm_out_desc.bEndpointAddress = fs_ncm_out_desc.bEndpointAddress;
+	ss_ncm_notify_desc.bEndpointAddress =
+		fs_ncm_notify_desc.bEndpointAddress;
+
 	status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function,
-			NULL, NULL);
+			ncm_ss_function, NULL);
 	if (status)
 		goto fail;
 
···
 	ncm->task_timer.function = ncm_tx_timeout;
 
 	DBG(cdev, "CDC Network: %s speed IN/%s OUT/%s NOTIFY/%s\n",
+			gadget_is_superspeed(c->cdev->gadget) ? "super" :
 			gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
 			ncm->port.in_ep->name, ncm->port.out_ep->name,
 			ncm->notify->name);

drivers/usb/gadget/function/f_printer.c

···
 /*-------------------------------------------------------------------------*/
 
 static bool gprinter_req_match(struct usb_function *f,
-			       const struct usb_ctrlrequest *ctrl)
+			       const struct usb_ctrlrequest *ctrl,
+			       bool config0)
 {
 	struct printer_dev	*dev = func_to_printer(f);
 	u16			w_index = le16_to_cpu(ctrl->wIndex);
 	u16			w_value = le16_to_cpu(ctrl->wValue);
 	u16			w_length = le16_to_cpu(ctrl->wLength);
+
+	if (config0)
+		return false;
 
 	if ((ctrl->bRequestType & USB_RECIP_MASK) != USB_RECIP_INTERFACE ||
 	    (ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS)

drivers/usb/gadget/function/f_sourcesink.c

···
 
 static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len)
 {
-	struct f_sourcesink		*ss = ep->driver_data;
-
-	return alloc_ep_req(ep, len, ss->buflen);
+	return alloc_ep_req(ep, len);
 }
 
 static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep)
···
 	} else {
 		ep = is_in ? ss->in_ep : ss->out_ep;
 		qlen = ss->bulk_qlen;
-		size = 0;
+		size = ss->buflen;
 	}
 
 	for (i = 0; i < qlen; i++) {

drivers/usb/gadget/function/f_uvc.c

···
 	memcpy(&uvc_event->req, ctrl, sizeof(uvc_event->req));
 	v4l2_event_queue(&uvc->vdev, &v4l2_event);
 
+	/* Pass additional setup data to userspace */
+	if (uvc->event_setup_out && uvc->event_length) {
+		uvc->control_req->length = uvc->event_length;
+		return usb_ep_queue(uvc->func.config->cdev->gadget->ep0,
+			uvc->control_req, GFP_ATOMIC);
+	}
+
 	return 0;
 }
 

drivers/usb/gadget/function/storage_common.c

···
 }
 EXPORT_SYMBOL_GPL(fsg_show_removable);
 
+ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf)
+{
+	return sprintf(buf, "%s\n", curlun->inquiry_string);
+}
+EXPORT_SYMBOL_GPL(fsg_show_inquiry_string);
+
 /*
  * The caller must hold fsg->filesem for reading when calling this function.
  */
···
 	return count;
 }
 EXPORT_SYMBOL_GPL(fsg_store_removable);
+
+ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf,
+				 size_t count)
+{
+	const size_t len = min(count, sizeof(curlun->inquiry_string));
+
+	if (len == 0 || buf[0] == '\n') {
+		curlun->inquiry_string[0] = 0;
+	} else {
+		snprintf(curlun->inquiry_string,
+			 sizeof(curlun->inquiry_string), "%-28s", buf);
+		if (curlun->inquiry_string[len-1] == '\n')
+			curlun->inquiry_string[len-1] = ' ';
+	}
+
+	return count;
+}
+EXPORT_SYMBOL_GPL(fsg_store_inquiry_string);
 
 MODULE_LICENSE("GPL");

drivers/usb/gadget/function/storage_common.h

···
 #define ASC(x)		((u8) ((x) >> 8))
 #define ASCQ(x)		((u8) (x))
 
+/*
+ * Vendor (8 chars), product (16 chars), release (4 hexadecimal digits) and NUL
+ * byte
+ */
+#define INQUIRY_STRING_LEN ((size_t) (8 + 16 + 4 + 1))
+
 struct fsg_lun {
 	struct file	*filp;
 	loff_t		file_length;
···
 	struct device	dev;
 	const char	*name;		/* "lun.name" */
 	const char	**name_pfx;	/* "function.name" */
+	char		inquiry_string[INQUIRY_STRING_LEN];
 };
 
 static inline bool fsg_lun_is_open(struct fsg_lun *curlun)
···
 ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 		      char *buf);
+ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,
···
 			const char *buf, size_t count);
 ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,
 			    size_t count);
+ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf,
+				 size_t count);
 
 #endif /* USB_STORAGE_COMMON_H */

drivers/usb/gadget/function/u_ether.c

···
 #define	WORK_RX_MEMORY		0
 
 	bool			zlp;
+	bool			no_skb_reserve;
 	u8			host_mac[ETH_ALEN];
 	u8			dev_mac[ETH_ALEN];
 };
···
 	 * but on at least one, checksumming fails otherwise.  Note:
 	 * RNDIS headers involve variable numbers of LE32 values.
 	 */
-	skb_reserve(skb, NET_IP_ALIGN);
+	if (likely(!dev->no_skb_reserve))
+		skb_reserve(skb, NET_IP_ALIGN);
 
 	req->buf = skb->data;
 	req->length = size;
···
 	req->complete = tx_complete;
 
 	/* NCM requires no zlp if transfer is dwNtbInMaxSize */
-	if (dev->port_usb->is_fixed &&
+	if (dev->port_usb &&
+	    dev->port_usb->is_fixed &&
 	    length == dev->port_usb->fixed_in_len &&
 	    (length % in->maxpacket) == 0)
 		req->zero = 0;
···
 
 	if (result == 0) {
 		dev->zlp = link->is_zlp_ok;
+		dev->no_skb_reserve = link->no_skb_reserve;
 		DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult));
 
 		dev->header_len = link->header_len;

drivers/usb/gadget/function/u_ether.h

···
 	struct usb_ep			*out_ep;
 
 	bool				is_zlp_ok;
+	bool				no_skb_reserve;
 
 	u16				cdc_filter;
 

drivers/usb/gadget/legacy/gmidi.c

···
 module_param(id, charp, S_IRUGO);
 MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter.");
 
-static unsigned int buflen = 256;
+static unsigned int buflen = 512;
 module_param(buflen, uint, S_IRUGO);
 MODULE_PARM_DESC(buflen, "MIDI buffer length");
 

drivers/usb/gadget/u_f.c

···
  */
 
 #include "u_f.h"
+#include <linux/usb/ch9.h>
 
-struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len)
+struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len)
 {
 	struct usb_request      *req;
 
 	req = usb_ep_alloc_request(ep, GFP_ATOMIC);
 	if (req) {
-		req->length = len ?: default_len;
+		req->length = usb_endpoint_dir_out(ep->desc) ?
+			usb_ep_align(ep, len) : len;
 		req->buf = kmalloc(req->length, GFP_ATOMIC);
 		if (!req->buf) {
 			usb_ep_free_request(ep, req);

drivers/usb/gadget/u_f.h

···
 struct usb_ep;
 struct usb_request;
 
-/* Requests allocated via alloc_ep_req() must be freed by free_ep_req(). */
-struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len);
+/**
+ * alloc_ep_req - returns a usb_request allocated by the gadget driver and
+ * allocates the request's buffer.
+ *
+ * @ep: the endpoint to allocate a usb_request
+ * @len: usb_requests's buffer suggested size
+ *
+ * In case @ep direction is OUT, the @len will be aligned to ep's
+ * wMaxPacketSize. In order to avoid memory leaks or drops, *always* use
+ * usb_requests's length (req->length) to refer to the allocated buffer size.
+ * Requests allocated via alloc_ep_req() *must* be freed by free_ep_req().
+ */
+struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len);
+
+/* Frees a usb_request previously allocated by alloc_ep_req() */
 static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)
 {
 	kfree(req->buf);

drivers/usb/gadget/udc/core.c

···
 		goto out;
 
 	ret = ep->ops->enable(ep, ep->desc);
-	if (ret) {
-		ret = ret;
+	if (ret)
 		goto out;
-	}
 
 	ep->enabled = true;
 

drivers/usb/gadget/udc/fsl_qe_udc.c

···
 	bd = ep->rxbase;
 
 	ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC);
-	if (ep->rxframe == NULL) {
-		dev_err(ep->udc->dev, "malloc rxframe failed\n");
+	if (!ep->rxframe)
 		return -ENOMEM;
-	}
 
 	qe_frame_init(ep->rxframe);
 
···
 
 	size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1);
 	ep->rxbuffer = kzalloc(size, GFP_ATOMIC);
-	if (ep->rxbuffer == NULL) {
-		dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n",
-				size);
+	if (!ep->rxbuffer) {
 		kfree(ep->rxframe);
 		return -ENOMEM;
 	}
···
 
 	if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) {
 		ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC);
-		if (ep->txframe == NULL) {
-			dev_err(udc->dev, "malloc txframe failed\n");
+		if (!ep->txframe)
 			goto en_done2;
-		}
 		qe_frame_init(ep->txframe);
 	}
 
···
 	u32 offset;
 
 	udc = kzalloc(sizeof(*udc), GFP_KERNEL);
-	if (udc == NULL) {
-		dev_err(&ofdev->dev, "malloc udc failed\n");
+	if (!udc)
 		goto cleanup;
-	}
 
 	udc->dev = &ofdev->dev;
 

drivers/usb/gadget/udc/goku_udc.c

···
 
 	/* alloc, and start init */
 	dev = kzalloc (sizeof *dev, GFP_KERNEL);
-	if (dev == NULL){
-		pr_debug("enomem %s\n", pci_name(pdev));
+	if (!dev) {
 		retval = -ENOMEM;
 		goto err;
 	}
···
 err:
 	if (dev)
 		goku_remove (pdev);
+	/* gadget_release is not registered yet, kfree explicitly */
+	kfree(dev);
 	return retval;
 }
 

drivers/usb/gadget/udc/net2280.c

···
 
 	ep = container_of(_ep, struct net2280_ep, ep);
 	if (!_ep || !_req) {
-		dev_err(&ep->dev->pdev->dev, "%s: Inavlid ep=%p or req=%p\n",
+		dev_err(&ep->dev->pdev->dev, "%s: Invalid ep=%p or req=%p\n",
 							__func__, _ep, _req);
 		return;
 	}
···
 	done(ep, req, status);
 }
 
-static void scan_dma_completions(struct net2280_ep *ep)
+static int scan_dma_completions(struct net2280_ep *ep)
 {
+	int num_completed = 0;
+
 	/* only look at descriptors that were "naturally" retired,
 	 * so fifo and list head state won't matter
 	 */
···
 				break;
 			/* single transfer mode */
 			dma_done(ep, req, tmp, 0);
+			num_completed++;
 			break;
 		} else if (!ep->is_in &&
 			   (req->req.length % ep->ep.maxpacket) &&
···
 			}
 		}
 		dma_done(ep, req, tmp, 0);
+		num_completed++;
 	}
+
+	return num_completed;
 }
 
 static void restart_dma(struct net2280_ep *ep)
···
 		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
 			return ep;
 		ep = gadget_find_ep_by_name(_gadget, "ep-f");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+	}
+
+	/* USB3380: Only first four endpoints have DMA channels. Allocate
+	 * slower interrupt endpoints from PIO hw endpoints, to allow bulk/isoc
+	 * endpoints use DMA hw endpoints.
+	 */
+	if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT &&
+	    usb_endpoint_dir_in(desc)) {
+		ep = gadget_find_ep_by_name(_gadget, "ep2in");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+		ep = gadget_find_ep_by_name(_gadget, "ep4in");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+	} else if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT &&
+		   !usb_endpoint_dir_in(desc)) {
+		ep = gadget_find_ep_by_name(_gadget, "ep1out");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+		ep = gadget_find_ep_by_name(_gadget, "ep3out");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+	} else if (usb_endpoint_type(desc) != USB_ENDPOINT_XFER_BULK &&
+		   usb_endpoint_dir_in(desc)) {
+		ep = gadget_find_ep_by_name(_gadget, "ep1in");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+		ep = gadget_find_ep_by_name(_gadget, "ep3in");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+	} else if (usb_endpoint_type(desc) != USB_ENDPOINT_XFER_BULK &&
+		   !usb_endpoint_dir_in(desc)) {
+		ep = gadget_find_ep_by_name(_gadget, "ep2out");
+		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
+			return ep;
+		ep = gadget_find_ep_by_name(_gadget, "ep4out");
 		if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp))
 			return ep;
 	}
···
 	/* manual DMA queue advance after short OUT */
 	if (likely(ep->dma)) {
 		if (t & BIT(SHORT_PACKET_TRANSFERRED_INTERRUPT)) {
-			u32	count;
+			struct net2280_request *stuck_req = NULL;
 			int	stopped = ep->stopped;
+			int	num_completed;
+			int	stuck = 0;
+			u32	count;
 
 			/* TRANSFERRED works around OUT_DONE erratum 0112.
 			 * we expect (N <= maxpacket) bytes; host wrote M.
···
 				/* any preceding dma transfers must finish.
 				 * dma handles (M >= N), may empty the queue
 				 */
-				scan_dma_completions(ep);
+				num_completed = scan_dma_completions(ep);
 				if (unlikely(list_empty(&ep->queue) ||
 						ep->out_overflow)) {
 					req = NULL;
···
 						req = NULL;
 					break;
 				}
+
+				/* Escape loop if no dma transfers completed
+				 * after few retries.
+				 */
+				if (num_completed == 0) {
+					if (stuck_req == req &&
+					    readl(&ep->dma->dmadesc) !=
+						  req->td_dma && stuck++ > 5) {
+						count = readl(
+							&ep->dma->dmacount);
+						count &= DMA_BYTE_COUNT_MASK;
+						req = NULL;
+						ep_dbg(ep->dev, "%s escape stuck %d, count %u\n",
+							ep->ep.name, stuck,
+							count);
+						break;
+					} else if (stuck_req != req) {
+						stuck_req = req;
+						stuck = 0;
+					}
+				} else {
+					stuck_req = NULL;
+					stuck = 0;
+				}
+
 				udelay(1);
 			}
 

drivers/usb/gadget/udc/omap_udc.c

···
 	xceiv = NULL;
 	/* "udc" is now valid */
 	pullup_disable(udc);
-#if	defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+#if	IS_ENABLED(CONFIG_USB_OHCI_HCD)
 	udc->gadget.is_otg = (config->otg != 0);
 #endif
 

drivers/usb/gadget/udc/pxa27x_udc.c

···
 #include <linux/usb.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
+#include <linux/usb/phy.h>
 
 #include "pxa27x_udc.h"
 
···
 	return -EOPNOTSUPP;
 }
 
+/**
+ * pxa_udc_phy_event - Called by phy upon VBus event
+ * @nb: notifier block
+ * @action: phy action, is vbus connect or disconnect
+ * @data: the usb_gadget structure in pxa_udc
+ *
+ * Called by the USB Phy when a cable connect or disconnect is sensed.
+ *
+ * Returns 0
+ */
+static int pxa_udc_phy_event(struct notifier_block *nb, unsigned long action,
+			     void *data)
+{
+	struct usb_gadget *gadget = data;
+
+	switch (action) {
+	case USB_EVENT_VBUS:
+		usb_gadget_vbus_connect(gadget);
+		return NOTIFY_OK;
+	case USB_EVENT_NONE:
+		usb_gadget_vbus_disconnect(gadget);
+		return NOTIFY_OK;
+	default:
+		return NOTIFY_DONE;
+	}
+}
+
+static struct notifier_block pxa27x_udc_phy = {
+	.notifier_call = pxa_udc_phy_event,
+};
+
 static int pxa27x_udc_start(struct usb_gadget *g,
 		struct usb_gadget_driver *driver);
 static int pxa27x_udc_stop(struct usb_gadget *g);
···
 		return udc->irq;
 
 	udc->dev = &pdev->dev;
-	udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
+	if (of_have_populated_dt()) {
+		udc->transceiver =
+			devm_usb_get_phy_by_phandle(udc->dev, "phys", 0);
+		if (IS_ERR(udc->transceiver))
+			return PTR_ERR(udc->transceiver);
+	} else {
+		udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
+	}
 
 	if (IS_ERR(udc->gpiod)) {
 		dev_err(&pdev->dev, "Couldn't find or request D+ gpio : %ld\n",
···
 		goto err;
 	}
 
+	if (!IS_ERR_OR_NULL(udc->transceiver))
+		usb_register_notifier(udc->transceiver, &pxa27x_udc_phy);
 	retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
 	if (retval)
-		goto err;
+		goto err_add_gadget;
 
 	pxa_init_debugfs(udc);
 	if (should_enable_udc(udc))
 		udc_enable(udc);
 	return 0;
+
+err_add_gadget:
+	if (!IS_ERR_OR_NULL(udc->transceiver))
+		usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy);
 err:
 	clk_unprepare(udc->clk);
 	return retval;
···
 	usb_del_gadget_udc(&udc->gadget);
 	pxa_cleanup_debugfs(udc);
 
+	if (!IS_ERR_OR_NULL(udc->transceiver))
+		usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy);
 	usb_put_phy(udc->transceiver);
 
 	udc->transceiver = NULL;

drivers/usb/gadget/udc/udc-xilinx.c

···
 
 	udc = ep->udc;
 	req = kzalloc(sizeof(*req), gfp_flags);
-	if (!req) {
-		dev_err(udc->dev, "%s:not enough memory", __func__);
+	if (!req)
 		return NULL;
-	}
 
 	req->ep = ep;
 	INIT_LIST_HEAD(&req->queue);

drivers/usb/host/Kconfig

···
 
 config USB_OHCI_HCD_OMAP3
 	tristate "OHCI support for OMAP3 and later chips"
-	depends on (ARCH_OMAP3 || ARCH_OMAP4)
+	depends on (ARCH_OMAP3 || ARCH_OMAP4 || SOC_OMAP5)
 	default y
 	---help---
 	  Enables support for the on-chip OHCI controller on

drivers/usb/host/bcma-hcd.c

···
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
+#include <linux/of_platform.h>
 #include <linux/usb/ehci_pdriver.h>
 #include <linux/usb/ohci_pdriver.h>
 
 MODULE_AUTHOR("Hauke Mehrtens");
 MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
 MODULE_LICENSE("GPL");
+
+/* See BCMA_CLKCTLST_EXTRESREQ and BCMA_CLKCTLST_EXTRESST */
+#define USB_BCMA_CLKCTLST_USB_CLK_REQ			0x00000100
 
 struct bcma_hcd_device {
 	struct bcma_device *core;
···
 	}
 }
 
-static void bcma_hcd_init_chip_arm_phy(struct bcma_device *dev)
+/**
+ * bcma_hcd_usb20_old_arm_init - Initialize old USB 2.0 controller on ARM
+ *
+ * Old USB 2.0 core is identified as BCMA_CORE_USB20_HOST and was introduced
+ * long before Northstar devices. It seems some cheaper chipsets like BCM53573
+ * still use it.
+ * Initialization of this old core differs between MIPS and ARM.
+ */
+static int bcma_hcd_usb20_old_arm_init(struct bcma_hcd_device *usb_dev)
 {
-	struct bcma_device *arm_core;
-	void __iomem *dmu;
+	struct bcma_device *core = usb_dev->core;
+	struct device *dev = &core->dev;
+	struct bcma_device *pmu_core;
 
-	arm_core = bcma_find_core(dev->bus, BCMA_CORE_ARMCA9);
-	if (!arm_core) {
-		dev_err(&dev->dev, "can not find ARM Cortex A9 ihost core\n");
-		return;
+	usleep_range(10000, 20000);
+	if (core->id.rev < 5)
+		return 0;
+
+	pmu_core = bcma_find_core(core->bus, BCMA_CORE_PMU);
+	if (!pmu_core) {
+		dev_err(dev, "Could not find PMU core\n");
+		return -ENOENT;
 	}
 
-	dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000);
-	if (!dmu) {
-		dev_err(&dev->dev, "can not map ARM Cortex A9 ihost core\n");
-		return;
-	}
+	/* Take USB core out of reset */
+	bcma_awrite32(core, BCMA_IOCTL, BCMA_IOCTL_CLK | BCMA_IOCTL_FGC);
+	usleep_range(100, 200);
+	bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
+	usleep_range(100, 200);
+	bcma_awrite32(core, BCMA_RESET_CTL, 0);
+	usleep_range(100, 200);
+	bcma_awrite32(core, BCMA_IOCTL, BCMA_IOCTL_CLK);
+	usleep_range(100, 200);
 
-	/* Unlock DMU PLL settings */
-	iowrite32(0x0000ea68, dmu + 0x180);
+	/* Enable Misc PLL */
+	bcma_write32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT |
+					  BCMA_CLKCTLST_HQCLKREQ |
+					  USB_BCMA_CLKCTLST_USB_CLK_REQ);
+	usleep_range(100, 200);
 
-	/* Write USB 2.0 PLL control setting */
-	iowrite32(0x00dd10c3, dmu + 0x164);
+	bcma_write32(core, 0x510, 0xc7f85000);
+	bcma_write32(core, 0x510, 0xc7f85003);
+	usleep_range(300, 600);
 
-	/* Lock DMU PLL settings */
-	iowrite32(0x00000000, dmu + 0x180);
+	/* Program USB PHY PLL parameters */
+	bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_ADDR, 0x6);
+	bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_DATA, 0x005360c1);
+	usleep_range(100, 200);
+	bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_ADDR, 0x7);
+	bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_DATA, 0x0);
+	usleep_range(100, 200);
+	bcma_set32(pmu_core, BCMA_CC_PMU_CTL, BCMA_CC_PMU_CTL_PLL_UPD);
+	usleep_range(100, 200);
 
-	iounmap(dmu);
+	bcma_write32(core, 0x510, 0x7f8d007);
+	udelay(1000);
+
+	/* Take controller out of reset */
+	bcma_write32(core, 0x200, 0x4ff);
+	usleep_range(25, 50);
+	bcma_write32(core, 0x200, 0x6ff);
+	usleep_range(25, 50);
+	bcma_write32(core, 0x200, 0x7ff);
+	usleep_range(25, 50);
+
+	of_platform_default_populate(dev->of_node, NULL, dev);
+
+	return 0;
 }
 
-static void bcma_hcd_init_chip_arm_hc(struct bcma_device *dev)
+static void bcma_hcd_usb20_ns_init_hc(struct bcma_device *dev)
 {
 	u32 val;
-
-	/*
-	 * Delay after PHY initialized to ensure HC is ready to be configured
-	 */
-	usleep_range(1000, 2000);
 
 	/* Set packet buffer OUT threshold */
 	val = bcma_read32(dev, 0x94);
···
 	val = bcma_read32(dev, 0x9c);
 	val |= 1;
 	bcma_write32(dev, 0x9c, val);
+
+	/*
+	 * Broadcom initializes PHY and then waits to ensure HC is ready to be
+	 * configured. In our case the order is reversed. We just initialized
+	 * controller and we let HCD initialize PHY, so let's wait (sleep) now.
+	 */
+	usleep_range(1000, 2000);
 }
 
-static void bcma_hcd_init_chip_arm(struct bcma_device *dev)
+/**
+ * bcma_hcd_usb20_ns_init - Initialize Northstar USB 2.0 controller
+ */
+static int bcma_hcd_usb20_ns_init(struct bcma_hcd_device *bcma_hcd)
 {
-	bcma_core_enable(dev, 0);
+	struct bcma_device *core = bcma_hcd->core;
+	struct bcma_chipinfo *ci = &core->bus->chipinfo;
+	struct device *dev = &core->dev;
 
-	if (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4707 ||
-	    dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM53018) {
-		if (dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4707 ||
-		    dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4708)
-			bcma_hcd_init_chip_arm_phy(dev);
+	bcma_core_enable(core, 0);
 
-		bcma_hcd_init_chip_arm_hc(dev);
-	}
+	if (ci->id == BCMA_CHIP_ID_BCM4707 ||
+	    ci->id == BCMA_CHIP_ID_BCM53018)
+		bcma_hcd_usb20_ns_init_hc(core);
+
+	of_platform_default_populate(dev->of_node, NULL, dev);
+
+	return 0;
 }
 
 static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val)
···
 	if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
 		return -EOPNOTSUPP;
 
-	switch (dev->id.id) {
-	case BCMA_CORE_NS_USB20:
-		bcma_hcd_init_chip_arm(dev);
-		break;
-	case BCMA_CORE_USB20_HOST:
-		bcma_hcd_init_chip_mips(dev);
-		break;
-	default:
-		return -ENODEV;
-	}
+	bcma_hcd_init_chip_mips(dev);
 
 	/* In AI chips EHCI is addrspace 0, OHCI is 1 */
 	ohci_addr = dev->addr_s[0];
···
 	return err;
 }
 
+static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)
+{
+	struct bcma_device *core = bcma_hcd->core;
+	struct device *dev = &core->dev;
+
+	bcma_core_enable(core, 0);
+
+	of_platform_default_populate(dev->of_node, NULL, dev);
+
+	return 0;
+}
+
 static int bcma_hcd_probe(struct bcma_device *core)
 {
 	int err;
···
 
 	switch (core->id.id) {
 	case BCMA_CORE_USB20_HOST:
+		if (IS_ENABLED(CONFIG_ARM))
+			err = bcma_hcd_usb20_old_arm_init(usb_dev);
+		else if (IS_ENABLED(CONFIG_MIPS))
+			err = bcma_hcd_usb20_init(usb_dev);
+		else
+			err = -ENOTSUPP;
+		break;
 	case BCMA_CORE_NS_USB20:
-		err = bcma_hcd_usb20_init(usb_dev);
-		if (err)
-			return err;
+		err = bcma_hcd_usb20_ns_init(usb_dev);
+		break;
+	case BCMA_CORE_NS_USB30:
+		err = bcma_hcd_usb30_init(usb_dev);
 		break;
 	default:
 		return -ENODEV;
 	}
+	if (err)
+		return err;
 
 	bcma_set_drvdata(core, usb_dev);
 	return 0;
···
 static const struct bcma_device_id bcma_hcd_table[] = {
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
+	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV, BCMA_ANY_CLASS),
 	{},
 };
 MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);

drivers/usb/host/ehci-platform.c

···
 #include "ehci.h"
 
 #define DRIVER_DESC "EHCI generic platform driver"
-#define EHCI_MAX_CLKS 3
+#define EHCI_MAX_CLKS 4
 #define EHCI_MAX_RSTS 3
 #define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv)
 

drivers/usb/host/fhci-hcd.c

···
 
 	/* allocate memory for SCC data structure */
 	usb = kzalloc(sizeof(*usb), GFP_KERNEL);
-	if (!usb) {
-		fhci_err(fhci, "no memory for SCC data struct\n");
+	if (!usb)
 		return NULL;
-	}
 
 	usb->fhci = fhci;
 	usb->hc_list = fhci->hc_list;

drivers/usb/host/fsl-mph-dr-of.c

···
 	pdata->controller_ver = usb_get_ver_info(np);
 
 	/* Activate Erratum by reading property in device tree */
-	if (of_get_property(np, "fsl,usb-erratum-a007792", NULL))
-		pdata->has_fsl_erratum_a007792 = 1;
-	else
-		pdata->has_fsl_erratum_a007792 = 0;
-	if (of_get_property(np, "fsl,usb-erratum-a005275", NULL))
-		pdata->has_fsl_erratum_a005275 = 1;
-	else
-		pdata->has_fsl_erratum_a005275 = 0;
+	pdata->has_fsl_erratum_a007792 =
+		of_property_read_bool(np, "fsl,usb-erratum-a007792");
+	pdata->has_fsl_erratum_a005275 =
+		of_property_read_bool(np, "fsl,usb-erratum-a005275");
 
 	/*
 	 * Determine whether phy_clk_valid needs to be checked
 	 * by reading property in device tree
 	 */
-	if (of_get_property(np, "phy-clk-valid", NULL))
-		pdata->check_phy_clk_valid = 1;
-	else
-		pdata->check_phy_clk_valid = 0;
+	pdata->check_phy_clk_valid =
+		of_property_read_bool(np, "phy-clk-valid");
 
 	if (pdata->have_sysif_regs) {
 		if (pdata->controller_ver == FSL_USB_VER_NONE) {

drivers/usb/host/max3421-hcd.c

···
 	INIT_LIST_HEAD(&max3421_hcd->ep_list);
 
 	max3421_hcd->tx = kmalloc(sizeof(*max3421_hcd->tx), GFP_KERNEL);
-	if (!max3421_hcd->tx) {
-		dev_err(&spi->dev, "failed to kmalloc tx buffer\n");
+	if (!max3421_hcd->tx)
 		goto error;
-	}
 	max3421_hcd->rx = kmalloc(sizeof(*max3421_hcd->rx), GFP_KERNEL);
-	if (!max3421_hcd->rx) {
-		dev_err(&spi->dev, "failed to kmalloc rx buffer\n");
+	if (!max3421_hcd->rx)
 		goto error;
-	}
 
 	max3421_hcd->spi_thread = kthread_run(max3421_spi_thread, hcd,
 					      "max3421_spi_thread");

drivers/usb/host/ohci-at91.c

···
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
+#include <soc/at91/atmel-sfr.h>
 
 #include "ohci.h"
 
···
 	struct clk *hclk;
 	bool clocked;
 	bool wakeup;		/* Saved wake-up state for resume */
+	struct regmap *sfr_regmap;
 };
 /* interface and function clocks; sometimes also an AHB clock */
 
···
 
 static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *);
 
+static struct regmap *at91_dt_syscon_sfr(void)
+{
+	struct regmap *regmap;
+
+	regmap = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
+	if (IS_ERR(regmap))
+		regmap = NULL;
+
+	return regmap;
+}
+
 /* configure so an HC device and id are always provided */
 /* always called with process context; sleeping is OK */
 
···
 		retval = PTR_ERR(ohci_at91->hclk);
 		goto err;
 	}
+
+	ohci_at91->sfr_regmap = at91_dt_syscon_sfr();
+	if (!ohci_at91->sfr_regmap)
+		dev_warn(dev, "failed to find sfr node\n");
 
 	board = hcd->self.controller->platform_data;
 	ohci = hcd_to_ohci(hcd);
···
 	return length;
 }
 
+static int ohci_at91_port_suspend(struct regmap *regmap, u8 set)
+{
+	u32 regval;
+	int ret;
+
+	if (!regmap)
+		return 0;
+
+	ret = regmap_read(regmap, AT91_SFR_OHCIICR, &regval);
+	if (ret)
+		return ret;
+
+	if (set)
+		regval |= AT91_OHCIICR_USB_SUSPEND;
+	else
+		regval &= ~AT91_OHCIICR_USB_SUSPEND;
+
+	regmap_write(regmap, AT91_SFR_OHCIICR, regval);
+
+	return 0;
+}
+
 /*
  * Look at the control requests to the root hub and see if we need to override.
  */
···
 				 u16 wIndex, char *buf, u16 wLength)
 {
 	struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller);
+	struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd);
 	struct usb_hub_descriptor *desc;
 	int ret = -EINVAL;
 	u32 *data = (u32 *)buf;
···
 
 	switch (typeReq) {
 	case SetPortFeature:
-		if (wValue == USB_PORT_FEAT_POWER) {
+		switch (wValue) {
+		case USB_PORT_FEAT_POWER:
 			dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n");
 			if (valid_port(wIndex)) {
 				ohci_at91_usb_set_power(pdata, wIndex, 1);
···
 			}
 
 			goto out;
+
+		case USB_PORT_FEAT_SUSPEND:
+			dev_dbg(hcd->self.controller, "SetPortFeat: SUSPEND\n");
+			if (valid_port(wIndex)) {
+				ohci_at91_port_suspend(ohci_at91->sfr_regmap,
+						       1);
+				return 0;
+			}
+			break;
 		}
 		break;
 
···
 				ohci_at91_usb_set_power(pdata, wIndex, 0);
 				return 0;
 			}
+			break;
+
+		case USB_PORT_FEAT_SUSPEND:
+			dev_dbg(hcd->self.controller, "ClearPortFeature: SUSPEND\n");
+			if (valid_port(wIndex)) {
+				ohci_at91_port_suspend(ohci_at91->sfr_regmap,
+						       0);
+				return 0;
+			}
+			break;
 		}
 		break;
 	}
···
 	if (ohci_at91->wakeup)
 		enable_irq_wake(hcd->irq);
 
+	ohci_at91_port_suspend(ohci_at91->sfr_regmap, 1);
+
 	ret = ohci_suspend(hcd, ohci_at91->wakeup);
 	if (ret) {
 		if (ohci_at91->wakeup)
···
 	at91_start_clock(ohci_at91);
 
 	ohci_resume(hcd, false);
+
+	ohci_at91_port_suspend(ohci_at91->sfr_regmap, 0);
+
 	return 0;
 }
 

drivers/usb/host/ohci-omap.c

···
 #include <mach/mux.h>
 
 #include <mach/hardware.h>
-#include <mach/irqs.h>
 #include <mach/usb.h>
 
 

drivers/usb/host/ohci-sa1111.c

···
  * This file is licenced under the GPL.
  */
 
-#include <mach/hardware.h>
 #include <asm/mach-types.h>
-#include <mach/assabet.h>
 #include <asm/hardware/sa1111.h>
 
 #ifndef CONFIG_SA1111
···
 	dev_dbg(&dev->dev, "starting SA-1111 OHCI USB Controller\n");
 
 	if (machine_is_xp860() ||
-	    machine_has_neponset() ||
+	    machine_is_assabet() ||
 	    machine_is_pfs168() ||
 	    machine_is_badge4())
 		usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW;

drivers/usb/host/uhci-hcd.c

···
 
 	uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu),
 			GFP_KERNEL);
-	if (!uhci->frame_cpu) {
-		dev_err(uhci_dev(uhci),
-			"unable to allocate memory for frame pointers\n");
+	if (!uhci->frame_cpu)
 		goto err_alloc_frame_cpu;
-	}
 
 	uhci->td_pool = dma_pool_create("uhci_td", uhci_dev(uhci),
 			sizeof(struct uhci_td), 16, 0);

drivers/usb/host/whci/init.c

···
 	init_waitqueue_head(&whc->cmd_wq);
 	init_waitqueue_head(&whc->async_list_wq);
 	init_waitqueue_head(&whc->periodic_list_wq);
-	whc->workqueue = create_singlethread_workqueue(dev_name(&whc->umc->dev));
+	whc->workqueue = alloc_ordered_workqueue(dev_name(&whc->umc->dev), 0);
 	if (whc->workqueue == NULL) {
 		ret = -ENOMEM;
 		goto error;

drivers/usb/host/xhci-tegra.c

···
 	tegra->phys = devm_kcalloc(&pdev->dev, tegra->num_phys,
 				   sizeof(*tegra->phys), GFP_KERNEL);
 	if (!tegra->phys) {
-		dev_err(&pdev->dev, "failed to allocate PHY array\n");
 		err = -ENOMEM;
 		goto put_padctl;
 	}
···
 						 tegra->hcd);
 	if (!xhci->shared_hcd) {
 		dev_err(&pdev->dev, "failed to create shared HCD\n");
+		err = -ENOMEM;
 		goto remove_usb2;
 	}
 

drivers/usb/host/xhci.c

···
 	xhci->msix_entries =
 		kmalloc((sizeof(struct msix_entry))*xhci->msix_count,
 				GFP_KERNEL);
-	if (!xhci->msix_entries) {
-		xhci_err(xhci, "Failed to allocate MSI-X entries\n");
+	if (!xhci->msix_entries)
 		return -ENOMEM;
-	}
 
 	for (i = 0; i < xhci->msix_count; i++) {
 		xhci->msix_entries[i].entry = i;

drivers/usb/misc/Kconfig

···
        help
          This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver.
 
+config USB_HSIC_USB4604
+       tristate "USB4604 HSIC to USB20 Driver"
+       depends on I2C
+       help
+         This option enables support for SMSC USB4604 HSIC to USB 2.0 Driver.
+
 config USB_LINK_LAYER_TEST
 	tristate "USB Link Layer Test driver"
 	help

drivers/usb/misc/Makefile

···
 obj-$(CONFIG_USB_SEVSEG)		+= usbsevseg.o
 obj-$(CONFIG_USB_YUREX)			+= yurex.o
 obj-$(CONFIG_USB_HSIC_USB3503)		+= usb3503.o
+obj-$(CONFIG_USB_HSIC_USB4604)		+= usb4604.o
 obj-$(CONFIG_USB_CHAOSKEY)		+= chaoskey.o
 obj-$(CONFIG_UCSI)			+= ucsi.o
 

drivers/usb/misc/adutux.c

···
 
 	/* allocate memory for our device state and initialize it */
 	dev = kzalloc(sizeof(struct adu_device), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev) {
 		retval = -ENOMEM;
 		goto exit;
 	}
···
 
 	dev->read_buffer_primary = kmalloc((4 * in_end_size), GFP_KERNEL);
 	if (!dev->read_buffer_primary) {
-		dev_err(&interface->dev, "Couldn't allocate read_buffer_primary\n");
 		retval = -ENOMEM;
 		goto error;
 	}
···
 
 	dev->read_buffer_secondary = kmalloc((4 * in_end_size), GFP_KERNEL);
 	if (!dev->read_buffer_secondary) {
-		dev_err(&interface->dev, "Couldn't allocate read_buffer_secondary\n");
 		retval = -ENOMEM;
 		goto error;
 	}
···
 	memset(dev->read_buffer_secondary + (3 * in_end_size), 'h', in_end_size);
 
 	dev->interrupt_in_buffer = kmalloc(in_end_size, GFP_KERNEL);
-	if (!dev->interrupt_in_buffer) {
-		dev_err(&interface->dev, "Couldn't allocate interrupt_in_buffer\n");
+	if (!dev->interrupt_in_buffer)
 		goto error;
-	}
 
 	/* debug code prime the buffer */
 	memset(dev->interrupt_in_buffer, 'i', in_end_size);
 
 	dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->interrupt_in_urb) {
-		dev_err(&interface->dev, "Couldn't allocate interrupt_in_urb\n");
+	if (!dev->interrupt_in_urb)
 		goto error;
-	}
 	dev->interrupt_out_buffer = kmalloc(out_end_size, GFP_KERNEL);
-	if (!dev->interrupt_out_buffer) {
-		dev_err(&interface->dev, "Couldn't allocate interrupt_out_buffer\n");
+	if (!dev->interrupt_out_buffer)
 		goto error;
-	}
 	dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->interrupt_out_urb) {
-		dev_err(&interface->dev, "Couldn't allocate interrupt_out_urb\n");
+	if (!dev->interrupt_out_urb)
 		goto error;
-	}
 
 	if (!usb_string(udev, udev->descriptor.iSerialNumber, dev->serial_number,
 			sizeof(dev->serial_number))) {

drivers/usb/misc/appledisplay.c

···
 };
 
 static atomic_t count_displays = ATOMIC_INIT(0);
-static struct workqueue_struct *wq;
 
 static void appledisplay_complete(struct urb *urb)
 {
···
 	case ACD_BTN_BRIGHT_UP:
 	case ACD_BTN_BRIGHT_DOWN:
 		pdata->button_pressed = 1;
-		queue_delayed_work(wq, &pdata->work, 0);
+		schedule_delayed_work(&pdata->work, 0);
 		break;
 	case ACD_BTN_NONE:
 	default:
···
 	pdata = kzalloc(sizeof(struct appledisplay), GFP_KERNEL);
 	if (!pdata) {
 		retval = -ENOMEM;
-		dev_err(&iface->dev, "Out of memory\n");
 		goto error;
 	}
 
···
 	pdata->msgdata = kmalloc(ACD_MSG_BUFFER_LEN, GFP_KERNEL);
 	if (!pdata->msgdata) {
 		retval = -ENOMEM;
-		dev_err(&iface->dev,
-			"Allocating buffer for control messages failed\n");
 		goto error;
 	}
 
···
 	pdata->urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!pdata->urb) {
 		retval = -ENOMEM;
-		dev_err(&iface->dev, "Allocating URB failed\n");
 		goto error;
 	}
 
···
 
 	if (pdata) {
 		usb_kill_urb(pdata->urb);
-		cancel_delayed_work(&pdata->work);
+		cancel_delayed_work_sync(&pdata->work);
 		backlight_device_unregister(pdata->bd);
 		usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
 			pdata->urbdata, pdata->urb->transfer_dma);
···
 
 static int __init appledisplay_init(void)
 {
-	wq = create_singlethread_workqueue("appledisplay");
-	if (!wq) {
-		printk(KERN_ERR "appledisplay: Could not create work queue\n");
-		return -ENOMEM;
-	}
-
 	return usb_register(&appledisplay_driver);
 }
 
 static void __exit appledisplay_exit(void)
 {
-	flush_workqueue(wq);
-	destroy_workqueue(wq);
 	usb_deregister(&appledisplay_driver);
 }
 

drivers/usb/misc/cypress_cy7c63.c

···
 	/* allocate some memory for the i/o buffer*/
 	iobuf = kzalloc(CYPRESS_MAX_REQSIZE, GFP_KERNEL);
 	if (!iobuf) {
-		dev_err(&dev->udev->dev, "Out of memory!\n");
 		retval = -ENOMEM;
 		goto error;
 	}
···
 
 	/* allocate memory for our device state and initialize it */
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&interface->dev, "Out of memory!\n");
+	if (!dev)
 		goto error_mem;
-	}
 
 	dev->udev = usb_get_dev(interface_to_usbdev(interface));
 

drivers/usb/misc/cytherm.c

···
 	int retval;
    
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	cytherm->brightness = simple_strtoul(buf, NULL, 10);
    
···
 	int temp, sign;
    
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	/* read temperature */
 	retval = vendor_command(cytherm->udev, READ_RAM, TEMP, 0, buffer, 8);
···
 	unsigned char *buffer;
 
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	/* check button */
 	retval = vendor_command(cytherm->udev, READ_RAM, BUTTON, 0, buffer, 8);
···
 	unsigned char *buffer;
 
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	retval = vendor_command(cytherm->udev, READ_PORT, 0, 0, buffer, 8);
 	if (retval)
···
 	int tmp;
    
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	tmp = simple_strtoul(buf, NULL, 10);
    
···
 	unsigned char *buffer;
 
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	retval = vendor_command(cytherm->udev, READ_PORT, 1, 0, buffer, 8);
 	if (retval)
···
 	int tmp;
    
 	buffer = kmalloc(8, GFP_KERNEL);
-	if (!buffer) {
-		dev_err(&cytherm->udev->dev, "out of memory\n");
+	if (!buffer)
 		return 0;
-	}
 
 	tmp = simple_strtoul(buf, NULL, 10);
    
···
 	int retval = -ENOMEM;
 
 	dev = kzalloc (sizeof(struct usb_cytherm), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err (&interface->dev, "Out of memory\n");
+	if (!dev)
 		goto error_mem;
-	}
 
 	dev->udev = usb_get_dev(udev);
 

drivers/usb/misc/ezusb.c

···
 	unsigned short max_internal_adress;
 };
 
-static struct ezusb_fx_type ezusb_fx1 = {
+static const struct ezusb_fx_type ezusb_fx1 = {
 	.cpucs_reg = 0x7F92,
 	.max_internal_adress = 0x1B3F,
 };

drivers/usb/misc/ftdi-elan.c

···
 MODULE_PARM_DESC(distrust_firmware,
 		 "true to distrust firmware power/overcurrent setup");
 extern struct platform_driver u132_platform_driver;
-static struct workqueue_struct *status_queue;
-static struct workqueue_struct *command_queue;
-static struct workqueue_struct *respond_queue;
 /*
  * ftdi_module_lock exists to protect access to global variables
  *
···
 
 static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
 {
-	if (!queue_delayed_work(status_queue, &ftdi->status_work, delta))
+	if (!schedule_delayed_work(&ftdi->status_work, delta))
 		kref_put(&ftdi->kref, ftdi_elan_delete);
 }
 
 static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
 {
-	if (queue_delayed_work(status_queue, &ftdi->status_work, delta))
+	if (schedule_delayed_work(&ftdi->status_work, delta))
 		kref_get(&ftdi->kref);
 }
 
 static void ftdi_status_cancel_work(struct usb_ftdi *ftdi)
 {
-	if (cancel_delayed_work(&ftdi->status_work))
+	if (cancel_delayed_work_sync(&ftdi->status_work))
 		kref_put(&ftdi->kref, ftdi_elan_delete);
 }
 
 static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
 {
-	if (!queue_delayed_work(command_queue, &ftdi->command_work, delta))
+	if (!schedule_delayed_work(&ftdi->command_work, delta))
 		kref_put(&ftdi->kref, ftdi_elan_delete);
 }
 
 static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
 {
-	if (queue_delayed_work(command_queue, &ftdi->command_work, delta))
+	if (schedule_delayed_work(&ftdi->command_work, delta))
 		kref_get(&ftdi->kref);
 }
 
 static void ftdi_command_cancel_work(struct usb_ftdi *ftdi)
 {
-	if (cancel_delayed_work(&ftdi->command_work))
+	if (cancel_delayed_work_sync(&ftdi->command_work))
 		kref_put(&ftdi->kref, ftdi_elan_delete);
 }
 
 static void ftdi_response_requeue_work(struct usb_ftdi *ftdi,
 				       unsigned int delta)
 {
-	if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
+	if (!schedule_delayed_work(&ftdi->respond_work, delta))
 		kref_put(&ftdi->kref, ftdi_elan_delete);
 }
 
 static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
 {
-	if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
+	if (schedule_delayed_work(&ftdi->respond_work, delta))
 		kref_get(&ftdi->kref);
 }
 
 static void ftdi_response_cancel_work(struct usb_ftdi *ftdi)
 {
-	if (cancel_delayed_work(&ftdi->respond_work))
+	if (cancel_delayed_work_sync(&ftdi->respond_work))
 		kref_put(&ftdi->kref, ftdi_elan_delete);
 }
 
···
 		return 0;
 	total_size = ftdi_elan_total_command_size(ftdi, command_size);
 	urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!urb) {
-		dev_err(&ftdi->udev->dev, "could not get a urb to write %d commands totaling %d bytes to the Uxxx\n",
-			command_size, total_size);
+	if (!urb)
 		return -ENOMEM;
-	}
 	buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL,
 				 &urb->transfer_dma);
 	if (!buf) {
···
 	int I = 257;
 	int i = 0;
 	urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!urb) {
-		dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequence\n");
+	if (!urb)
 		return -ENOMEM;
-	}
 	buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
 	if (!buf) {
 		dev_err(&ftdi->udev->dev, "could not get a buffer for flush sequence\n");
···
 	int I = 4;
 	int i = 0;
 	urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!urb) {
-		dev_err(&ftdi->udev->dev, "could not get a urb for the reset sequence\n");
+	if (!urb)
 		return -ENOMEM;
-	}
 	buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
 	if (!buf) {
 		dev_err(&ftdi->udev->dev, "could not get a buffer for the reset sequence\n");
···
 			ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress;
 			ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
 			if (!ftdi->bulk_in_buffer) {
-				dev_err(&ftdi->udev->dev, "Could not allocate bulk_in_buffer\n");
 				retval = -ENOMEM;
 				goto error;
 			}
···
 			ftdi->initialized = 0;
 			ftdi->registered = 0;
 		}
-		flush_workqueue(status_queue);
-		flush_workqueue(command_queue);
-		flush_workqueue(respond_queue);
 		ftdi->disconnected += 1;
 		usb_set_intfdata(interface, NULL);
 		dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller interface now disconnected\n");
···
 	pr_info("driver %s\n", ftdi_elan_driver.name);
 	mutex_init(&ftdi_module_lock);
 	INIT_LIST_HEAD(&ftdi_static_list);
-	status_queue = create_singlethread_workqueue("ftdi-status-control");
-	if (!status_queue)
-		goto err_status_queue;
-	command_queue = create_singlethread_workqueue("ftdi-command-engine");
-	if (!command_queue)
-		goto err_command_queue;
-	respond_queue = create_singlethread_workqueue("ftdi-respond-engine");
-	if (!respond_queue)
-		goto err_respond_queue;
 	result = usb_register(&ftdi_elan_driver);
 	if (result) {
-		destroy_workqueue(status_queue);
-		destroy_workqueue(command_queue);
-		destroy_workqueue(respond_queue);
 		pr_err("usb_register failed. Error number %d\n", result);
 	}
 	return result;
 
-err_respond_queue:
-	destroy_workqueue(command_queue);
-err_command_queue:
-	destroy_workqueue(status_queue);
-err_status_queue:
-	pr_err("%s couldn't create workqueue\n", ftdi_elan_driver.name);
-	return -ENOMEM;
 }
 
 static void __exit ftdi_elan_exit(void)
···
 		ftdi_status_cancel_work(ftdi);
 		ftdi_command_cancel_work(ftdi);
 		ftdi_response_cancel_work(ftdi);
-	} flush_workqueue(status_queue);
-	destroy_workqueue(status_queue);
-	status_queue = NULL;
-	flush_workqueue(command_queue);
-	destroy_workqueue(command_queue);
-	command_queue = NULL;
-	flush_workqueue(respond_queue);
-	destroy_workqueue(respond_queue);
-	respond_queue = NULL;
+	}
 }
 
 

drivers/usb/misc/idmouse.c

···
 			kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL);
 
 		if (!dev->bulk_in_buffer) {
-			dev_err(&interface->dev, "Unable to allocate input buffer.\n");
 			idmouse_delete(dev);
 			return -ENOMEM;
 		}

drivers/usb/misc/iowarrior.c

···
 	dev = file->private_data;
 
 	/* verify that the device wasn't unplugged */
-	if (dev == NULL || !dev->present)
+	if (!dev || !dev->present)
 		return -ENODEV;
 
 	dev_dbg(&dev->interface->dev, "minor %d, count = %zd\n",
···
 		int_out_urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!int_out_urb) {
 			retval = -ENOMEM;
-			dev_dbg(&dev->interface->dev,
-				"Unable to allocate urb\n");
 			goto error_no_urb;
 		}
 		buf = usb_alloc_coherent(dev->udev, dev->report_size,
···
 	int io_res;		/* checks for bytes read/written and copy_to/from_user results */
 
 	dev = file->private_data;
-	if (dev == NULL) {
+	if (!dev)
 		return -ENODEV;
-	}
 
 	buffer = kzalloc(dev->report_size, GFP_KERNEL);
 	if (!buffer)
···
 	int retval = 0;
 
 	dev = file->private_data;
-	if (dev == NULL) {
+	if (!dev)
 		return -ENODEV;
-	}
 
 	dev_dbg(&dev->interface->dev, "minor %d\n", dev->minor);
 
···
 
 	/* allocate memory for our device state and initialize it */
 	dev = kzalloc(sizeof(struct iowarrior), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev)
 		return retval;
-	}
 
 	mutex_init(&dev->mutex);
 
···
 
 	/* create the urb and buffer for reading */
 	dev->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->int_in_urb) {
-		dev_err(&interface->dev, "Couldn't allocate interrupt_in_urb\n");
+	if (!dev->int_in_urb)
 		goto error;
-	}
 	dev->int_in_buffer = kmalloc(dev->report_size, GFP_KERNEL);
-	if (!dev->int_in_buffer) {
-		dev_err(&interface->dev, "Couldn't allocate int_in_buffer\n");
+	if (!dev->int_in_buffer)
 		goto error;
-	}
 	usb_fill_int_urb(dev->int_in_urb, dev->udev,
 			 usb_rcvintpipe(dev->udev,
 					dev->int_in_endpoint->bEndpointAddress),
···
 	dev->read_queue =
 	    kmalloc(((dev->report_size + 1) * MAX_INTERRUPT_BUFFER),
 		    GFP_KERNEL);
-	if (!dev->read_queue) {
-		dev_err(&interface->dev, "Couldn't allocate read_queue\n");
+	if (!dev->read_queue)
 		goto error;
-	}
 	/* Get the serial-number of the chip */
 	memset(dev->chip_serial, 0x00, sizeof(dev->chip_serial));
 	usb_string(udev, udev->descriptor.iSerialNumber, dev->chip_serial,

drivers/usb/misc/ldusb.c

···
 	/* allocate memory for our device state and initialize it */
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&intf->dev, "Out of memory\n");
+	if (!dev)
 		goto exit;
-	}
 	mutex_init(&dev->mutex);
 	spin_lock_init(&dev->rbsl);
 	dev->intf = intf;
···
 	     (le16_to_cpu(udev->descriptor.idProduct) == USB_DEVICE_ID_LD_COM3LAB)) &&
 	    (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x103)) {
 		buffer = kmalloc(256, GFP_KERNEL);
-		if (buffer == NULL) {
-			dev_err(&intf->dev, "Couldn't allocate string buffer\n");
+		if (!buffer)
 			goto error;
-		}
 		/* usb_string makes SETUP+STALL to leave always ControlReadLoop */
 		usb_string(udev, 255, buffer, 256);
 		kfree(buffer);
···
 
 	dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint);
 	dev->ring_buffer = kmalloc(ring_buffer_size*(sizeof(size_t)+dev->interrupt_in_endpoint_size), GFP_KERNEL);
-	if (!dev->ring_buffer) {
-		dev_err(&intf->dev, "Couldn't allocate ring_buffer\n");
+	if (!dev->ring_buffer)
 		goto error;
-	}
 	dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);
-	if (!dev->interrupt_in_buffer) {
-		dev_err(&intf->dev, "Couldn't allocate interrupt_in_buffer\n");
+	if (!dev->interrupt_in_buffer)
 		goto error;
-	}
 	dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->interrupt_in_urb) {
-		dev_err(&intf->dev, "Couldn't allocate interrupt_in_urb\n");
+	if (!dev->interrupt_in_urb)
 		goto error;
-	}
 	dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? usb_endpoint_maxp(dev->interrupt_out_endpoint) :
 									 udev->descriptor.bMaxPacketSize0;
 	dev->interrupt_out_buffer = kmalloc(write_buffer_size*dev->interrupt_out_endpoint_size, GFP_KERNEL);
-	if (!dev->interrupt_out_buffer) {
-		dev_err(&intf->dev, "Couldn't allocate interrupt_out_buffer\n");
+	if (!dev->interrupt_out_buffer)
 		goto error;
-	}
 	dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->interrupt_out_urb) {
-		dev_err(&intf->dev, "Couldn't allocate interrupt_out_urb\n");
+	if (!dev->interrupt_out_urb)
 		goto error;
-	}
 	dev->interrupt_in_interval = min_interrupt_in_interval > dev->interrupt_in_endpoint->bInterval ? min_interrupt_in_interval : dev->interrupt_in_endpoint->bInterval;
 	if (dev->interrupt_out_endpoint)
 		dev->interrupt_out_interval = min_interrupt_out_interval > dev->interrupt_out_endpoint->bInterval ? min_interrupt_out_interval : dev->interrupt_out_endpoint->bInterval;

drivers/usb/misc/legousbtower.c

···
 
 	dev = kmalloc (sizeof(struct lego_usb_tower), GFP_KERNEL);
 
-	if (dev == NULL) {
-		dev_err(idev, "Out of memory\n");
+	if (!dev)
 		goto exit;
-	}
 
 	mutex_init(&dev->lock);
 
···
 	}
 
 	dev->read_buffer = kmalloc (read_buffer_size, GFP_KERNEL);
-	if (!dev->read_buffer) {
-		dev_err(idev, "Couldn't allocate read_buffer\n");
+	if (!dev->read_buffer)
 		goto error;
-	}
 	dev->interrupt_in_buffer = kmalloc (usb_endpoint_maxp(dev->interrupt_in_endpoint), GFP_KERNEL);
-	if (!dev->interrupt_in_buffer) {
-		dev_err(idev, "Couldn't allocate interrupt_in_buffer\n");
+	if (!dev->interrupt_in_buffer)
 		goto error;
-	}
 	dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->interrupt_in_urb) {
-		dev_err(idev, "Couldn't allocate interrupt_in_urb\n");
+	if (!dev->interrupt_in_urb)
 		goto error;
-	}
 	dev->interrupt_out_buffer = kmalloc (write_buffer_size, GFP_KERNEL);
-	if (!dev->interrupt_out_buffer) {
-		dev_err(idev, "Couldn't allocate interrupt_out_buffer\n");
+	if (!dev->interrupt_out_buffer)
 		goto error;
-	}
 	dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->interrupt_out_urb) {
-		dev_err(idev, "Couldn't allocate interrupt_out_urb\n");
+	if (!dev->interrupt_out_urb)
 		goto error;
-	}
 	dev->interrupt_in_interval = interrupt_in_interval ? interrupt_in_interval : dev->interrupt_in_endpoint->bInterval;
 	dev->interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev->interrupt_out_endpoint->bInterval;
-
-	/* we can register the device now, as it is ready */
-	usb_set_intfdata (interface, dev);
-
-	retval = usb_register_dev (interface, &tower_class);
-
-	if (retval) {
-		/* something prevented us from registering this driver */
-		dev_err(idev, "Not able to get a minor for this device.\n");
-		usb_set_intfdata (interface, NULL);
-		goto error;
-	}
-	dev->minor = interface->minor;
-
-	/* let the user know what node this device is now attached to */
-	dev_info(&interface->dev, "LEGO USB Tower #%d now attached to major "
-		 "%d minor %d\n", (dev->minor - LEGO_USB_TOWER_MINOR_BASE),
-		 USB_MAJOR, dev->minor);
 
 	/* get the firmware version and log it */
 	result = usb_control_msg (udev,
···
 		 get_version_reply.minor,
 		 le16_to_cpu(get_version_reply.build_no));
 
+	/* we can register the device now, as it is ready */
+	usb_set_intfdata (interface, dev);
+
+	retval = usb_register_dev (interface, &tower_class);
+
+	if (retval) {
+		/* something prevented us from registering this driver */
+		dev_err(idev, "Not able to get a minor for this device.\n");
+		usb_set_intfdata (interface, NULL);
+		goto error;
+	}
+	dev->minor = interface->minor;
+
+	/* let the user know what node this device is now attached to */
+	dev_info(&interface->dev, "LEGO USB Tower #%d now attached to major "
+		 "%d minor %d\n", (dev->minor - LEGO_USB_TOWER_MINOR_BASE),
+		 USB_MAJOR, dev->minor);
 
 exit:
 	return retval;

drivers/usb/misc/lvstest.c

···
 	struct usb_hub_descriptor descriptor;
 	/* urb for polling interrupt pipe */
 	struct urb *urb;
-	/* LVS RH work queue */
-	struct workqueue_struct *rh_queue;
 	/* LVH RH work */
 	struct work_struct	rh_work;
 	/* RH port status */
···
 	int ret;
 
 	descriptor = kmalloc(sizeof(*descriptor), GFP_KERNEL);
-	if (!descriptor) {
-		dev_err(dev, "failed to allocate descriptor memory\n");
+	if (!descriptor)
 		return -ENOMEM;
-	}
 
 	udev = create_lvs_device(intf);
 	if (!udev) {
···
 {
 	struct lvs_rh *lvs = urb->context;
 
-	queue_work(lvs->rh_queue, &lvs->rh_work);
+	schedule_work(&lvs->rh_work);
 }
 
 static int lvs_rh_probe(struct usb_interface *intf,
···
 
 	/* submit urb to poll interrupt endpoint */
 	lvs->urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!lvs->urb) {
-		dev_err(&intf->dev, "couldn't allocate lvs urb\n");
+	if (!lvs->urb)
 		return -ENOMEM;
-	}
-
-	lvs->rh_queue = create_singlethread_workqueue("lvs_rh_queue");
-	if (!lvs->rh_queue) {
-		dev_err(&intf->dev, "couldn't create workqueue\n");
-		ret = -ENOMEM;
-		goto free_urb;
-	}
 
 	INIT_WORK(&lvs->rh_work, lvs_rh_work);
 
 	ret = sysfs_create_group(&intf->dev.kobj, &lvs_attr_group);
 	if (ret < 0) {
 		dev_err(&intf->dev, "Failed to create sysfs node %d\n", ret);
-		goto destroy_queue;
+		goto free_urb;
 	}
 
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
···
 
 sysfs_remove:
 	sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group);
-destroy_queue:
-	destroy_workqueue(lvs->rh_queue);
 free_urb:
 	usb_free_urb(lvs->urb);
 	return ret;
···
 	struct lvs_rh *lvs = usb_get_intfdata(intf);
 
 	sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group);
-	destroy_workqueue(lvs->rh_queue);
+	flush_work(&lvs->rh_work);
 	usb_free_urb(lvs->urb);
 }
 

drivers/usb/misc/sisusbvga/sisusb.c

···
 	/* Allocate URBs */
 	sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL);
 	if (!sisusb->sisurbin) {
-		dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n");
 		retval = -ENOMEM;
 		goto error_3;
 	}
···
 	for (i = 0; i < sisusb->numobufs; i++) {
 		sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL);
 		if (!sisusb->sisurbout[i]) {
-			dev_err(&sisusb->sisusb_dev->dev,
-					"Failed to allocate URBs\n");
 			retval = -ENOMEM;
 			goto error_4;
 		}

drivers/usb/misc/trancevibrator.c

···
 	int retval;
 
 	dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev) {
 		retval = -ENOMEM;
 		goto error;
 	}

drivers/usb/misc/usb4604.c

···
+/*
+ * Driver for SMSC USB4604 USB HSIC 4-port 2.0 hub controller driver
+ * Based on usb3503 driver
+ *
+ * Copyright (c) 2012-2013 Dongjin Kim ([e-mail])
+ * Copyright (c) 2016 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+
+enum usb4604_mode {
+	USB4604_MODE_UNKNOWN,
+	USB4604_MODE_HUB,
+	USB4604_MODE_STANDBY,
+};
+
+struct usb4604 {
+	enum usb4604_mode	mode;
+	struct device		*dev;
+	struct gpio_desc	*gpio_reset;
+};
+
+static void usb4604_reset(struct usb4604 *hub, int state)
+{
+	gpiod_set_value_cansleep(hub->gpio_reset, state);
+
+	/* Wait for i2c logic to come up */
+	if (state)
+		msleep(250);
+}
+
+static int usb4604_connect(struct usb4604 *hub)
+{
+	struct device *dev = hub->dev;
+	struct i2c_client *client = to_i2c_client(dev);
+	int err;
+	u8 connect_cmd[] = { 0xaa, 0x55, 0x00 };
+
+	usb4604_reset(hub, 1);
+
+	err = i2c_master_send(client, connect_cmd, ARRAY_SIZE(connect_cmd));
+	if (err < 0) {
+		usb4604_reset(hub, 0);
+		return err;
+	}
+
+	hub->mode = USB4604_MODE_HUB;
+	dev_dbg(dev, "switched to HUB mode\n");
+
+	return 0;
+}
+
+static int usb4604_switch_mode(struct usb4604 *hub, enum usb4604_mode mode)
+{
+	struct device *dev = hub->dev;
+	int err = 0;
+
+	switch (mode) {
+	case USB4604_MODE_HUB:
+		err = usb4604_connect(hub);
+		break;
+
+	case USB4604_MODE_STANDBY:
+		usb4604_reset(hub, 0);
+		dev_dbg(dev, "switched to STANDBY mode\n");
+		break;
+
+	default:
+		dev_err(dev, "unknown mode is requested\n");
+		err = -EINVAL;
+		break;
+	}
+
+	return err;
+}
+
+static int usb4604_probe(struct usb4604 *hub)
+{
+	struct device *dev = hub->dev;
+	struct device_node *np = dev->of_node;
+	struct gpio_desc *gpio;
+	u32 mode = USB4604_MODE_HUB;
+
+	gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(gpio))
+		return PTR_ERR(gpio);
+	hub->gpio_reset = gpio;
+
+	if (of_property_read_u32(np, "initial-mode", &hub->mode))
+		hub->mode = mode;
+
+	return usb4604_switch_mode(hub, hub->mode);
+}
+
+static int usb4604_i2c_probe(struct i2c_client *i2c,
+			     const struct i2c_device_id *id)
+{
+	struct usb4604 *hub;
+
+	hub = devm_kzalloc(&i2c->dev, sizeof(*hub), GFP_KERNEL);
+	if (!hub)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, hub);
+	hub->dev = &i2c->dev;
+
+	return usb4604_probe(hub);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int usb4604_i2c_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct usb4604 *hub = i2c_get_clientdata(client);
+
+	usb4604_switch_mode(hub, USB4604_MODE_STANDBY);
+
+	return 0;
+}
+
+static int usb4604_i2c_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct usb4604 *hub = i2c_get_clientdata(client);
+
+	usb4604_switch_mode(hub, hub->mode);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(usb4604_i2c_pm_ops, usb4604_i2c_suspend,
+		usb4604_i2c_resume);
+
+static const struct i2c_device_id usb4604_id[] = {
+	{ "usb4604", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, usb4604_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id usb4604_of_match[] = {
+	{ .compatible = "smsc,usb4604" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, usb4604_of_match);
+#endif
+
+static struct i2c_driver usb4604_i2c_driver = {
+	.driver = {
+		.name = "usb4604",
+		.pm = &usb4604_i2c_pm_ops,
+		.of_match_table = of_match_ptr(usb4604_of_match),
+	},
+	.probe		= usb4604_i2c_probe,
+	.id_table	= usb4604_id,
+};
+module_i2c_driver(usb4604_i2c_driver);
+
+MODULE_DESCRIPTION("USB4604 USB HUB driver");
+MODULE_LICENSE("GPL v2");

drivers/usb/misc/usblcd.c

···
 
 	/* allocate memory for our device state and initialize it */
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev)
 		goto error;
-	}
 	kref_init(&dev->kref);
 	sema_init(&dev->limit_sem, USB_LCD_CONCURRENT_WRITES);
 	init_usb_anchor(&dev->submitted);
···
 			dev->bulk_in_size = buffer_size;
 			dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
 			dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
-			if (!dev->bulk_in_buffer) {
-				dev_err(&interface->dev,
-					"Could not allocate bulk_in_buffer\n");
+			if (!dev->bulk_in_buffer)
 				goto error;
-			}
 		}
 
 		if (!dev->bulk_out_endpointAddr &&

drivers/usb/misc/usbsevseg.c

···
 		return;
 
 	buffer = kzalloc(MAXLEN, mf);
-	if (!buffer) {
-		dev_err(&mydev->udev->dev, "out of memory\n");
+	if (!buffer)
 		return;
-	}
 
 	/* The device is right to left, where as you write left to right */
 	for (i = 0; i < mydev->textlength; i++)
···
 	int rc = -ENOMEM;
 
 	mydev = kzalloc(sizeof(struct usb_sevsegdev), GFP_KERNEL);
-	if (mydev == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!mydev)
 		goto error_mem;
-	}
 
 	mydev->udev = usb_get_dev(udev);
 	mydev->intf = interface;

drivers/usb/misc/uss720.c

···
 	if (!usbdev)
 		return NULL;
 	rq = kzalloc(sizeof(struct uss720_async_request), mem_flags);
-	if (!rq) {
-		dev_err(&usbdev->dev, "submit_async_request out of memory\n");
+	if (!rq)
 		return NULL;
-	}
 	kref_init(&rq->ref_count);
 	INIT_LIST_HEAD(&rq->asynclist);
 	init_completion(&rq->compl);
···
 	rq->urb = usb_alloc_urb(0, mem_flags);
 	if (!rq->urb) {
 		kref_put(&rq->ref_count, destroy_async);
-		dev_err(&usbdev->dev, "submit_async_request out of memory\n");
 		return NULL;
 	}
 	rq->dr = kmalloc(sizeof(*rq->dr), mem_flags);

drivers/usb/misc/yurex.c

···
 
 	/* allocate memory for our device state and initialize it */
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (!dev) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev)
 		goto error;
-	}
 	kref_init(&dev->kref);
 	mutex_init(&dev->io_mutex);
 	spin_lock_init(&dev->lock);
···
 
 	/* allocate control URB */
 	dev->cntl_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->cntl_urb) {
-		dev_err(&interface->dev, "Could not allocate control URB\n");
+	if (!dev->cntl_urb)
 		goto error;
-	}
 
 	/* allocate buffer for control req */
 	dev->cntl_req = kmalloc(YUREX_BUF_SIZE, GFP_KERNEL);
-	if (!dev->cntl_req) {
-		dev_err(&interface->dev, "Could not allocate cntl_req\n");
+	if (!dev->cntl_req)
 		goto error;
-	}
 
 	/* allocate buffer for control msg */
 	dev->cntl_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE,
···
 
 	/* allocate interrupt URB */
 	dev->urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!dev->urb) {
-		dev_err(&interface->dev, "Could not allocate URB\n");
+	if (!dev->urb)
 		goto error;
-	}
 
 	/* allocate buffer for interrupt in */
 	dev->int_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE,

drivers/usb/musb/Kconfig

···
 	tristate "DA8xx/OMAP-L1x"
 	depends on ARCH_DAVINCI_DA8XX
 	depends on NOP_USB_XCEIV
-	depends on BROKEN
+	select PHY_DA8XX_USB
 
 config USB_MUSB_TUSB6010
 	tristate "TUSB6010"

drivers/usb/musb/am35x.c

···
 	int				ret = -ENOMEM;
 
 	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
-	if (!glue) {
-		dev_err(&pdev->dev, "failed to allocate glue context\n");
+	if (!glue)
 		goto err0;
-	}
 
 	phy_clk = clk_get(&pdev->dev, "fck");
 	if (IS_ERR(phy_clk)) {
···
 	pdata->platform_ops		= &am35x_ops;
 
 	glue->phy = usb_phy_generic_register();
-	if (IS_ERR(glue->phy))
+	if (IS_ERR(glue->phy)) {
+		ret = PTR_ERR(glue->phy);
 		goto err7;
+	}
 	platform_set_drvdata(pdev, glue);
 
 	pinfo = am35x_dev_info;

drivers/usb/musb/da8xx.c

···
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/io.h>
+#include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/usb/usb_phy_generic.h>
-
-#include <mach/da8xx.h>
-#include <linux/platform_data/usb-davinci.h>
 
 #include "musb_core.h"
 
···
 
 #define DA8XX_MENTOR_CORE_OFFSET 0x400
 
-#define CFGCHIP2	IO_ADDRESS(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG)
-
 struct da8xx_glue {
 	struct device		*dev;
 	struct platform_device	*musb;
-	struct platform_device	*phy;
+	struct platform_device	*usb_phy;
 	struct clk		*clk;
+	struct phy		*phy;
 };
-
-/*
- * REVISIT (PM): we should be able to keep the PHY in low power mode most
- * of the time (24 MHz oscillator and PLL off, etc.) by setting POWER.D0
- * and, when in host mode, autosuspending idle root ports... PHY_PLLON
- * (overriding SUSPENDM?) then likely needs to stay off.
- */
-
-static inline void phy_on(void)
-{
-	u32 cfgchip2 = __raw_readl(CFGCHIP2);
-
-	/*
-	 * Start the on-chip PHY and its PLL.
-	 */
-	cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN);
-	cfgchip2 |= CFGCHIP2_PHY_PLLON;
-	__raw_writel(cfgchip2, CFGCHIP2);
-
-	pr_info("Waiting for USB PHY clock good...\n");
-	while (!(__raw_readl(CFGCHIP2) & CFGCHIP2_PHYCLKGD))
-		cpu_relax();
-}
-
-static inline void phy_off(void)
-{
-	u32 cfgchip2 = __raw_readl(CFGCHIP2);
-
-	/*
-	 * Ensure that USB 1.1 reference clock is not being sourced from
-	 * USB 2.0 PHY.  Otherwise do not power down the PHY.
-	 */
-	if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX) &&
-	     (cfgchip2 & CFGCHIP2_USB1SUSPENDM)) {
-		pr_warning("USB 1.1 clocked from USB 2.0 PHY -- "
-			   "can't power it down\n");
-		return;
-	}
-
-	/*
-	 * Power down the on-chip PHY.
-	 */
-	cfgchip2 |= CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN;
-	__raw_writel(cfgchip2, CFGCHIP2);
-}
 
 /*
  * Because we don't set CTRL.UINT, it's "important" to:
···
 
 static int da8xx_musb_set_mode(struct musb *musb, u8 musb_mode)
 {
-	u32 cfgchip2 = __raw_readl(CFGCHIP2);
+	struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
+	enum phy_mode phy_mode;
 
-	cfgchip2 &= ~CFGCHIP2_OTGMODE;
 	switch (musb_mode) {
 	case MUSB_HOST:		/* Force VBUS valid, ID = 0 */
-		cfgchip2 |= CFGCHIP2_FORCE_HOST;
+		phy_mode = PHY_MODE_USB_HOST;
 		break;
 	case MUSB_PERIPHERAL:	/* Force VBUS valid, ID = 1 */
-		cfgchip2 |= CFGCHIP2_FORCE_DEVICE;
+		phy_mode = PHY_MODE_USB_DEVICE;
 		break;
 	case MUSB_OTG:		/* Don't override the VBUS/ID comparators */
-		cfgchip2 |= CFGCHIP2_NO_OVERRIDE;
+		phy_mode = PHY_MODE_USB_OTG;
 		break;
 	default:
-		dev_dbg(musb->controller, "Trying to set unsupported mode %u\n", musb_mode);
+		return -EINVAL;
 	}
 
-	__raw_writel(cfgchip2, CFGCHIP2);
-	return 0;
+	return phy_set_mode(glue->phy, phy_mode);
 }
 
 static int da8xx_musb_init(struct musb *musb)
 {
+	struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
 	void __iomem *reg_base = musb->ctrl_base;
 	u32 rev;
 	int ret = -ENODEV;
···
 		goto fail;
 	}
 
+	ret = clk_prepare_enable(glue->clk);
+	if (ret) {
+		dev_err(glue->dev, "failed to enable clock\n");
+		goto fail;
+	}
+
 	setup_timer(&otg_workaround, otg_timer, (unsigned long)musb);
 
 	/* Reset the controller */
 	musb_writel(reg_base, DA8XX_USB_CTRL_REG, DA8XX_SOFT_RESET_MASK);
 
 	/* Start the on-chip PHY and its PLL. */
-	phy_on();
+	ret = phy_init(glue->phy);
+	if (ret) {
+		dev_err(glue->dev, "Failed to init phy.\n");
+		goto err_phy_init;
+	}
+
+	ret = phy_power_on(glue->phy);
+	if (ret) {
+		dev_err(glue->dev, "Failed to power on phy.\n");
+		goto err_phy_power_on;
+	}
 
 	msleep(5);
 
 	/* NOTE: IRQs are in mixed mode, not bypass to pure MUSB */
-	pr_debug("DA8xx OTG revision %08x, PHY %03x, control %02x\n",
-		 rev, __raw_readl(CFGCHIP2),
+	pr_debug("DA8xx OTG revision %08x, control %02x\n", rev,
 		 musb_readb(reg_base, DA8XX_USB_CTRL_REG));
 
 	musb->isr = da8xx_musb_interrupt;
 	return 0;
+
+err_phy_power_on:
+	phy_exit(glue->phy);
+err_phy_init:
+	clk_disable_unprepare(glue->clk);
 fail:
 	return ret;
 }
 
 static int da8xx_musb_exit(struct musb *musb)
 {
+	struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
+
 	del_timer_sync(&otg_workaround);
 
-	phy_off();
+	phy_power_off(glue->phy);
+	phy_exit(glue->phy);
+	clk_disable_unprepare(glue->clk);
 
 	usb_put_phy(musb->xceiv);
 
···
 {
 	struct resource musb_resources[2];
 	struct musb_hdrc_platform_data	*pdata = dev_get_platdata(&pdev->dev);
-	struct platform_device		*musb;
 	struct da8xx_glue		*glue;
 	struct platform_device_info	pinfo;
 	struct clk			*clk;
+	int				ret;
 
-	int				ret = -ENOMEM;
+	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
+	if (!glue)
+		return -ENOMEM;
 
-	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
-	if (!glue) {
-		dev_err(&pdev->dev, "failed to allocate glue context\n");
-		goto err0;
-	}
-
-	clk = clk_get(&pdev->dev, "usb20");
+	clk = devm_clk_get(&pdev->dev, "usb20");
 	if (IS_ERR(clk)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
-		ret = PTR_ERR(clk);
-		goto err3;
+		return PTR_ERR(clk);
 	}
 
-	ret = clk_enable(clk);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to enable clock\n");
-		goto err4;
+	glue->phy = devm_phy_get(&pdev->dev, "usb-phy");
+	if (IS_ERR(glue->phy)) {
+		dev_err(&pdev->dev, "failed to get phy\n");
+		return PTR_ERR(glue->phy);
 	}
 
 	glue->dev			= &pdev->dev;
···
 
 	pdata->platform_ops		= &da8xx_ops;
 
-	glue->phy = usb_phy_generic_register();
-	if (IS_ERR(glue->phy)) {
-		ret = PTR_ERR(glue->phy);
-		goto err5;
+	glue->usb_phy = usb_phy_generic_register();
+	ret = PTR_ERR_OR_ZERO(glue->usb_phy);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register usb_phy\n");
+		return ret;
 	}
 	platform_set_drvdata(pdev, glue);
 
···
 	pinfo.data = pdata;
 	pinfo.size_data = sizeof(*pdata);
 
-	glue->musb = musb = platform_device_register_full(&pinfo);
-	if (IS_ERR(musb)) {
-		ret = PTR_ERR(musb);
+	glue->musb = platform_device_register_full(&pinfo);
+	ret = PTR_ERR_OR_ZERO(glue->musb);
+	if (ret) {
 		dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
-		goto err6;
+		usb_phy_generic_unregister(glue->usb_phy);
 	}
 
-	return 0;
-
-err6:
-	usb_phy_generic_unregister(glue->phy);
-
-err5:
-	clk_disable(clk);
-
-err4:
-	clk_put(clk);
-
-err3:
-	kfree(glue);
-
-err0:
 	return ret;
 }
 
···
 	struct da8xx_glue		*glue = platform_get_drvdata(pdev);
 
 	platform_device_unregister(glue->musb);
-	usb_phy_generic_unregister(glue->phy);
-	clk_disable(glue->clk);
-	clk_put(glue->clk);
-	kfree(glue);
+	usb_phy_generic_unregister(glue->usb_phy);
 
 	return 0;
 }

drivers/usb/musb/musb_core.c

···
 {
 	u8 reg;
 	char *type;
-	char aInfo[90], aRevision[32], aDate[12];
+	char aInfo[90];
 	void __iomem	*mbase = musb->mregs;
 	int		status = 0;
 	int		i;
···
 
 	pr_debug("%s: ConfigData=0x%02x (%s)\n", musb_driver_name, reg, aInfo);
 
-	aDate[0] = 0;
 	if (MUSB_CONTROLLER_MHDRC == musb_type) {
 		musb->is_multipoint = 1;
 		type = "M";
···
 
 	/* log release info */
 	musb->hwvers = musb_read_hwvers(mbase);
-	snprintf(aRevision, 32, "%d.%d%s", MUSB_HWVERS_MAJOR(musb->hwvers),
-		MUSB_HWVERS_MINOR(musb->hwvers),
-		(musb->hwvers & MUSB_HWVERS_RC) ? "RC" : "");
-	pr_debug("%s: %sHDRC RTL version %s %s\n",
-		 musb_driver_name, type, aRevision, aDate);
+	pr_debug("%s: %sHDRC RTL version %d.%d%s\n",
+		 musb_driver_name, type, MUSB_HWVERS_MAJOR(musb->hwvers),
+		 MUSB_HWVERS_MINOR(musb->hwvers),
+		 (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : "");
 
 	/* configure ep0 */
 	musb_configure_ep0(musb);
···
 	.attrs = musb_attributes,
 };
 
+#define MUSB_QUIRK_B_INVALID_VBUS_91	(MUSB_DEVCTL_BDEVICE | \
+					 (2 << MUSB_DEVCTL_VBUS_SHIFT) | \
+					 MUSB_DEVCTL_SESSION)
+#define MUSB_QUIRK_A_DISCONNECT_19	((3 << MUSB_DEVCTL_VBUS_SHIFT) | \
+					 MUSB_DEVCTL_SESSION)
+
+/*
+ * Check the musb devctl session bit to determine if we want to
+ * allow PM runtime for the device. In general, we want to keep things
+ * active when the session bit is set except after host disconnect.
+ *
+ * Only called from musb_irq_work. If this ever needs to get called
+ * elsewhere, proper locking must be implemented for musb->session.
+ */
+static void musb_pm_runtime_check_session(struct musb *musb)
+{
+	u8 devctl, s;
+	int error;
+
+	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+
+	/* Handle session status quirks first */
+	s = MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV |
+		MUSB_DEVCTL_HR;
+	switch (devctl & ~s) {
+	case MUSB_QUIRK_B_INVALID_VBUS_91:
+		if (!musb->session && !musb->quirk_invalid_vbus) {
+			musb->quirk_invalid_vbus = true;
+			musb_dbg(musb,
+				 "First invalid vbus, assume no session");
+			return;
+		}
+		break;
+	case MUSB_QUIRK_A_DISCONNECT_19:
+		if (!musb->session)
+			break;
+		musb_dbg(musb, "Allow PM on possible host mode disconnect");
+		pm_runtime_mark_last_busy(musb->controller);
+		pm_runtime_put_autosuspend(musb->controller);
+		musb->session = false;
+		return;
+	default:
+		break;
+	}
+
+	/* No need to do anything if session has not changed */
+	s = devctl & MUSB_DEVCTL_SESSION;
+	if (s == musb->session)
+		return;
+
+	/* Block PM or allow PM? */
+	if (s) {
+		musb_dbg(musb, "Block PM on active session: %02x", devctl);
+		error = pm_runtime_get_sync(musb->controller);
+		if (error < 0)
+			dev_err(musb->controller, "Could not enable: %i\n",
+				error);
+	} else {
+		musb_dbg(musb, "Allow PM with no session: %02x", devctl);
+		musb->quirk_invalid_vbus = false;
+		pm_runtime_mark_last_busy(musb->controller);
+		pm_runtime_put_autosuspend(musb->controller);
+	}
+
+	musb->session = s;
+}
+
 /* Only used to provide driver mode change events */
 static void musb_irq_work(struct work_struct *data)
 {
 	struct musb *musb = container_of(data, struct musb, irq_work);
+
+	musb_pm_runtime_check_session(musb);
 
 	if (musb->xceiv->otg->state != musb->xceiv_old_state) {
 		musb->xceiv_old_state = musb->xceiv->otg->state;

drivers/usb/musb/musb_core.h

···
 	u8			min_power;	/* vbus for periph, in mA/2 */
 
 	int			port_mode;	/* MUSB_PORT_MODE_* */
+	bool			session;
+	bool			quirk_invalid_vbus;
 	bool			is_host;
 
 	int			a_wait_bcon;	/* VBUS timeout in msecs */

drivers/usb/musb/musb_dsps.c

···
 	{ "mode",		0xe8 },
 };
 
-static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
-{
-	struct device *dev = musb->controller;
-	struct dsps_glue *glue = dev_get_drvdata(dev->parent);
-
-	if (timeout == 0)
-		timeout = jiffies + msecs_to_jiffies(3);
-
-	/* Never idle if active, or when VBUS timeout is not set as host */
-	if (musb->is_active || (musb->a_wait_bcon == 0 &&
-			musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON)) {
-		dev_dbg(musb->controller, "%s active, deleting timer\n",
-				usb_otg_state_string(musb->xceiv->otg->state));
-		del_timer(&glue->timer);
-		glue->last_timer = jiffies;
-		return;
-	}
-	if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE)
-		return;
-
-	if (!musb->g.dev.driver)
-		return;
-
-	if (time_after(glue->last_timer, timeout) &&
-				timer_pending(&glue->timer)) {
-		dev_dbg(musb->controller,
-			"Longer idle timer already pending, ignoring...\n");
-		return;
-	}
-	glue->last_timer = timeout;
-
-	dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
-		usb_otg_state_string(musb->xceiv->otg->state),
-			jiffies_to_msecs(timeout - jiffies));
-	mod_timer(&glue->timer, timeout);
-}
-
 /**
  * dsps_musb_enable - enable interrupts
  */
···
 			musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
 		mod_timer(&glue->timer, jiffies +
 				msecs_to_jiffies(wrp->poll_timeout));
-	dsps_musb_try_idle(musb, 0);
 }
 
 /**
···
 	u8 devctl;
 	unsigned long flags;
 	int skip_session = 0;
+	int err;
+
+	err = pm_runtime_get_sync(dev);
+	if (err < 0)
+		dev_err(dev, "Poll could not pm_runtime_get: %i\n", err);
 
 	/*
 	 * We poll because DSPS IP's won't expose several OTG-critical
···
 
 	spin_lock_irqsave(&musb->lock, flags);
 	switch (musb->xceiv->otg->state) {
+	case OTG_STATE_A_WAIT_VRISE:
+		mod_timer(&glue->timer, jiffies +
+				msecs_to_jiffies(wrp->poll_timeout));
+		break;
 	case OTG_STATE_A_WAIT_BCON:
 		musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
 		skip_session = 1;
···
 		break;
 	}
 	spin_unlock_irqrestore(&musb->lock, flags);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
 }
 
 static irqreturn_t dsps_interrupt(int irq, void *hci)
···
 			MUSB_HST_MODE(musb);
 			musb->xceiv->otg->default_a = 1;
 			musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
-			del_timer(&glue->timer);
+			mod_timer(&glue->timer, jiffies +
+				  msecs_to_jiffies(wrp->poll_timeout));
 		} else {
 			musb->is_active = 0;
 			MUSB_DEV_MODE(musb);
···
 	if (musb->int_tx || musb->int_rx || musb->int_usb)
 		ret |= musb_interrupt(musb);
 
-	/* Poll for ID change in OTG port mode */
-	if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
-			musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
+	/* Poll for ID change and connect */
+	switch (musb->xceiv->otg->state) {
+	case OTG_STATE_B_IDLE:
+	case OTG_STATE_A_WAIT_BCON:
 		mod_timer(&glue->timer, jiffies +
 				msecs_to_jiffies(wrp->poll_timeout));
+		break;
+	default:
+		break;
+	}
+
 out:
 	spin_unlock_irqrestore(&musb->lock, flags);
 
···
 		val |= MUSB_BABBLE_SW_SESSION_CTRL;
 		musb_writeb(musb->mregs, MUSB_BABBLE_CTL, val);
 	}
+
+	mod_timer(&glue->timer, jiffies +
+		  msecs_to_jiffies(glue->wrp->poll_timeout));
 
 	return dsps_musb_dbg_init(musb, glue);
 }
···
 	.enable		= dsps_musb_enable,
 	.disable	= dsps_musb_disable,
 
-	.try_idle	= dsps_musb_try_idle,
 	.set_mode	= dsps_musb_set_mode,
 	.recover	= dsps_musb_recover,
 };
···
 
 	platform_set_drvdata(pdev, glue);
 	pm_runtime_enable(&pdev->dev);
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 200);
 
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0) {
···
 	if (ret)
 		goto err3;
 
+	pm_runtime_mark_last_busy(&pdev->dev);
+	pm_runtime_put_autosuspend(&pdev->dev);
+
 	return 0;
 
 err3:
-	pm_runtime_put(&pdev->dev);
+	pm_runtime_put_sync(&pdev->dev);
 err2:
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	return ret;
 }
···
 	platform_device_unregister(glue->musb);
 
 	/* disable usbss clocks */
-	pm_runtime_put(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
 	return 0;

drivers/usb/musb/musb_gadget.c

···
 	 * that currently misbehaves.
 	 */
 
+	/* Force check of devctl register for PM runtime */
+	schedule_work(&musb->irq_work);
+
 	pm_runtime_mark_last_busy(musb->controller);
 	pm_runtime_put_autosuspend(musb->controller);
 

drivers/usb/musb/musb_virthub.c

···
 			usb_otg_state_string(musb->xceiv->otg->state));
 	}
 }
+EXPORT_SYMBOL_GPL(musb_root_disconnect);
 
 
 /*---------------------------------------------------------------------*/

drivers/usb/musb/omap2430.c

···
 	enum musb_vbus_id_status status;
 	struct work_struct	omap_musb_mailbox_work;
 	struct device		*control_otghs;
-	bool			cable_connected;
-	bool			enabled;
-	bool			powered;
 };
 #define glue_to_musb(g)		platform_get_drvdata(g->musb)
 
···
 	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
 }
 
-/*
- * We can get multiple cable events so we need to keep track
- * of the power state. Only keep power enabled if USB cable is
- * connected and a gadget is started.
- */
-static void omap2430_set_power(struct musb *musb, bool enabled, bool cable)
-{
-	struct device *dev = musb->controller;
-	struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
-	bool power_up;
-	int res;
-
-	if (glue->enabled != enabled)
-		glue->enabled = enabled;
-
-	if (glue->cable_connected != cable)
-		glue->cable_connected = cable;
-
-	power_up = glue->enabled && glue->cable_connected;
-	if (power_up == glue->powered) {
-		dev_warn(musb->controller, "power state already %i\n",
-			 power_up);
-		return;
-	}
-
-	glue->powered = power_up;
-
-	if (power_up) {
-		res = pm_runtime_get_sync(musb->controller);
-		if (res < 0) {
-			dev_err(musb->controller, "could not enable: %i", res);
-			glue->powered = false;
-		}
-	} else {
-		pm_runtime_mark_last_busy(musb->controller);
-		pm_runtime_put_autosuspend(musb->controller);
-	}
-}
-
 static int omap2430_musb_mailbox(enum musb_vbus_id_status status)
 {
 	struct omap2430_glue	*glue = _glue;
···
 static void omap_musb_set_mailbox(struct omap2430_glue *glue)
 {
 	struct musb *musb = glue_to_musb(glue);
-	struct device *dev = musb->controller;
-	struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
+	struct musb_hdrc_platform_data *pdata =
+		dev_get_platdata(musb->controller);
 	struct omap_musb_board_data *data = pdata->board_data;
 	struct usb_otg *otg = musb->xceiv->otg;
-	bool cable_connected;
 
-	cable_connected = ((glue->status == MUSB_ID_GROUND) ||
-			   (glue->status == MUSB_VBUS_VALID));
-
-	if (cable_connected)
-		omap2430_set_power(musb, glue->enabled, cable_connected);
-
+	pm_runtime_get_sync(musb->controller);
 	switch (glue->status) {
 	case MUSB_ID_GROUND:
-		dev_dbg(dev, "ID GND\n");
+		dev_dbg(musb->controller, "ID GND\n");
 
 		otg->default_a = true;
 		musb->xceiv->otg->state = OTG_STATE_A_IDLE;
···
 		break;
 
 	case MUSB_VBUS_VALID:
-		dev_dbg(dev, "VBUS Connect\n");
+		dev_dbg(musb->controller, "VBUS Connect\n");
 
 		otg->default_a = false;
 		musb->xceiv->otg->state = OTG_STATE_B_IDLE;
···
 
 	case MUSB_ID_FLOAT:
 	case MUSB_VBUS_OFF:
-		dev_dbg(dev, "VBUS Disconnect\n");
+		dev_dbg(musb->controller, "VBUS Disconnect\n");
 
 		musb->xceiv->last_event = USB_EVENT_NONE;
 		if (musb->gadget_driver)
···
 			USB_MODE_DISCONNECT);
 		break;
 	default:
-		dev_dbg(dev, "ID float\n");
+		dev_dbg(musb->controller, "ID float\n");
 	}
-
-	if (!cable_connected)
-		omap2430_set_power(musb, glue->enabled, cable_connected);
-
+	pm_runtime_mark_last_busy(musb->controller);
+	pm_runtime_put_autosuspend(musb->controller);
 	atomic_notifier_call_chain(&musb->xceiv->notifier,
 			musb->xceiv->last_event, NULL);
 }
···
 	if (!WARN_ON(!musb->phy))
 		phy_power_on(musb->phy);
 
-	omap2430_set_power(musb, true, glue->cable_connected);
-
 	switch (glue->status) {
 
 	case MUSB_ID_GROUND:
···
 	if (glue->status != MUSB_UNKNOWN)
 		omap_control_usb_set_mode(glue->control_otghs,
 			USB_MODE_DISCONNECT);
-
-	omap2430_set_power(musb, false, glue->cable_connected);
 }
 
 static int omap2430_musb_exit(struct musb *musb)
···
 
 	pm_runtime_enable(glue->dev);
 	pm_runtime_use_autosuspend(glue->dev);
-	pm_runtime_set_autosuspend_delay(glue->dev, 500);
+	pm_runtime_set_autosuspend_delay(glue->dev, 100);
 
 	ret = platform_device_add(musb);
 	if (ret) {
···
 static int omap2430_remove(struct platform_device *pdev)
 {
 	struct omap2430_glue *glue = platform_get_drvdata(pdev);
-	struct musb *musb = glue_to_musb(glue);
 
 	pm_runtime_get_sync(glue->dev);
 	platform_device_unregister(glue->musb);
-	omap2430_set_power(musb, false, false);
 	pm_runtime_put_sync(glue->dev);
 	pm_runtime_dont_use_autosuspend(glue->dev);
 	pm_runtime_disable(glue->dev);

drivers/usb/musb/sunxi.c

···
 #define SUNXI_MUSB_FL_HAS_SRAM			5
 #define SUNXI_MUSB_FL_HAS_RESET			6
 #define SUNXI_MUSB_FL_NO_CONFIGDATA		7
+#define SUNXI_MUSB_FL_PHY_MODE_PEND		8
 
 /* Our read/write methods need access and do not get passed in a musb ref :| */
 static struct musb *sunxi_musb;
···
 	struct phy		*phy;
 	struct platform_device	*usb_phy;
 	struct usb_phy		*xceiv;
+	enum phy_mode		phy_mode;
 	unsigned long		flags;
 	struct work_struct	work;
 	struct extcon_dev	*extcon;
···
 			clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
 		}
 	}
+
+	if (test_and_clear_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags))
+		phy_set_mode(glue->phy, glue->phy_mode);
 }
 
 static void sunxi_musb_set_vbus(struct musb *musb, int is_on)
···
 
 static void sunxi_musb_dma_controller_destroy(struct dma_controller *c)
 {
+}
+
+static int sunxi_musb_set_mode(struct musb *musb, u8 mode)
+{
+	struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
+	enum phy_mode new_mode;
+
+	switch (mode) {
+	case MUSB_HOST:
+		new_mode = PHY_MODE_USB_HOST;
+		break;
+	case MUSB_PERIPHERAL:
+		new_mode = PHY_MODE_USB_DEVICE;
+		break;
+	case MUSB_OTG:
+		new_mode = PHY_MODE_USB_OTG;
+		break;
+	default:
+		dev_err(musb->controller->parent,
+			"Error requested mode not supported by this kernel\n");
+		return -EINVAL;
+	}
+
+	if (glue->phy_mode == new_mode)
+		return 0;
+
+	if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE) {
+		dev_err(musb->controller->parent,
+			"Error changing modes is only supported in dual role mode\n");
+		return -EINVAL;
+	}
+
+	if (musb->port1_status & USB_PORT_STAT_ENABLE)
+		musb_root_disconnect(musb);
+
+	/*
+	 * phy_set_mode may sleep, and we're called with a spinlock held,
+	 * so let sunxi_musb_work deal with it.
+	 */
+	glue->phy_mode = new_mode;
+	set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags);
+	schedule_work(&glue->work);
+
+	return 0;
 }
 
 /*
···
 	.writew		= sunxi_musb_writew,
 	.dma_init	= sunxi_musb_dma_controller_create,
 	.dma_exit	= sunxi_musb_dma_controller_destroy,
+	.set_mode	= sunxi_musb_set_mode,
 	.set_vbus	= sunxi_musb_set_vbus,
 	.pre_root_reset_end = sunxi_musb_pre_root_reset_end,
 	.post_root_reset_end = sunxi_musb_post_root_reset_end,
···
 		return -EINVAL;
 	}
 
+	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
+	if (!glue)
+		return -ENOMEM;
+
 	memset(&pdata, 0, sizeof(pdata));
 	switch (usb_get_dr_mode(&pdev->dev)) {
 #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
 	case USB_DR_MODE_HOST:
 		pdata.mode = MUSB_PORT_MODE_HOST;
+		glue->phy_mode = PHY_MODE_USB_HOST;
 		break;
 #endif
 #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_GADGET
 	case USB_DR_MODE_PERIPHERAL:
 		pdata.mode = MUSB_PORT_MODE_GADGET;
+		glue->phy_mode = PHY_MODE_USB_DEVICE;
 		break;
 #endif
 #ifdef CONFIG_USB_MUSB_DUAL_ROLE
 	case USB_DR_MODE_OTG:
 		pdata.mode = MUSB_PORT_MODE_DUAL_ROLE;
+		glue->phy_mode = PHY_MODE_USB_OTG;
 		break;
 #endif
 	default:
···
 	}
 	pdata.platform_ops	= &sunxi_musb_ops;
 	pdata.config		= &sunxi_musb_hdrc_config;
-
-	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
-	if (!glue)
-		return -ENOMEM;
 
 	glue->dev = &pdev->dev;
 	INIT_WORK(&glue->work, sunxi_musb_work);

drivers/usb/phy/phy-ab8500-usb.c

···
 	err = abx500_set_register_interruptible(ab->dev,
 			AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78);
 	if (err < 0)
-		dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n",
+		dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n",
 				err);
 
 	/* Switch to normal mode/disable Bank 0x12 access */
···
 			0xFC, 0x80);
 
 	if (err < 0)
-		dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n",
+		dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n",
 				err);
 
 	/* Switch to normal mode/disable Bank 0x12 access */
···
 	err = abx500_set_register_interruptible(ab->dev,
 			AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90);
 	if (err < 0)
-		dev_err(ab->dev, "Failed to set PHY_TUNE3 regester ret=%d\n",
+		dev_err(ab->dev, "Failed to set PHY_TUNE3 register ret=%d\n",
 				err);
 }
 
···
 	err = abx500_set_register_interruptible(ab->dev,
 			AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80);
 	if (err < 0)
-		dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n",
+		dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n",
 				err);
 
 	/* Switch to normal mode/disable Bank 0x12 access */

drivers/usb/phy/phy-generic.c

···
 		status = USB_EVENT_VBUS;
 		otg->state = OTG_STATE_B_PERIPHERAL;
 		nop->phy.last_event = status;
-		if (otg->gadget)
-			usb_gadget_vbus_connect(otg->gadget);
 
 		/* drawing a "unit load" is *always* OK, except for OTG */
 		nop_set_vbus_draw(nop, 100);
···
 	} else {
 		nop_set_vbus_draw(nop, 0);
 
-		if (otg->gadget)
-			usb_gadget_vbus_disconnect(otg->gadget);
 		status = USB_EVENT_NONE;
 		otg->state = OTG_STATE_B_IDLE;
 		nop->phy.last_event = status;
···
 
 	otg->gadget = gadget;
 	if (otg->state == OTG_STATE_B_PERIPHERAL)
-		usb_gadget_vbus_connect(gadget);
+		atomic_notifier_call_chain(&otg->usb_phy->notifier,
+					   USB_EVENT_VBUS, otg->gadget);
 	else
 		otg->state = OTG_STATE_B_IDLE;
 	return 0;
···
 				gpiod_to_irq(nop->gpiod_vbus), err);
 			return err;
 		}
+		nop->phy.otg->state = gpiod_get_value(nop->gpiod_vbus) ?
+			OTG_STATE_B_PERIPHERAL : OTG_STATE_B_IDLE;
 	}
 
 	nop->phy.init		= usb_gen_phy_init;

drivers/usb/phy/phy-mxs-usb.c

···
 #define DRIVER_NAME "mxs_phy"
 
 #define HW_USBPHY_PWD				0x00
+#define HW_USBPHY_TX				0x10
 #define HW_USBPHY_CTRL				0x30
 #define HW_USBPHY_CTRL_SET			0x34
 #define HW_USBPHY_CTRL_CLR			0x38
···
 #define HW_USBPHY_IP				0x90
 #define HW_USBPHY_IP_SET			0x94
 #define HW_USBPHY_IP_CLR			0x98
+
+#define GM_USBPHY_TX_TXCAL45DP(x)            (((x) & 0xf) << 16)
+#define GM_USBPHY_TX_TXCAL45DN(x)            (((x) & 0xf) << 8)
+#define GM_USBPHY_TX_D_CAL(x)                (((x) & 0xf) << 0)
 
 #define BM_USBPHY_CTRL_SFTRST			BIT(31)
 #define BM_USBPHY_CTRL_CLKGATE			BIT(30)
···
  */
 #define MXS_PHY_NEED_IP_FIX			BIT(3)
 
+/* Minimum and maximum values for device tree entries */
+#define MXS_PHY_TX_CAL45_MIN			30
+#define MXS_PHY_TX_CAL45_MAX			55
+#define MXS_PHY_TX_D_CAL_MIN			79
+#define MXS_PHY_TX_D_CAL_MAX			119
+
 struct mxs_phy_data {
 	unsigned int flags;
 };
···
 	const struct mxs_phy_data *data;
 	struct regmap *regmap_anatop;
 	int port_id;
+	u32 tx_reg_set;
+	u32 tx_reg_mask;
 };
 
 static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
···
 static void mxs_phy_clock_switch_delay(void)
 {
 	usleep_range(300, 400);
+}
+
+static void mxs_phy_tx_init(struct mxs_phy *mxs_phy)
+{
+	void __iomem *base = mxs_phy->phy.io_priv;
+	u32 phytx;
+
+	/* Update TX register if there is anything to write */
+	if (mxs_phy->tx_reg_mask) {
+		phytx = readl(base + HW_USBPHY_TX);
+		phytx &= ~mxs_phy->tx_reg_mask;
+		phytx |= mxs_phy->tx_reg_set;
+		writel(phytx, base + HW_USBPHY_TX);
+	}
 }
 
 static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
···
 
 	if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX)
 		writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET);
+
+	mxs_phy_tx_init(mxs_phy);
 
 	return 0;
 }
···
 	int ret;
 	const struct of_device_id *of_id;
 	struct device_node *np = pdev->dev.of_node;
+	u32 val;
 
 	of_id = of_match_device(mxs_phy_dt_ids, &pdev->dev);
 	if (!of_id)
···
 				"failed to find regmap for anatop\n");
 			return PTR_ERR(mxs_phy->regmap_anatop);
 		}
+	}
+
+	/* Precompute which bits of the TX register are to be updated, if any */
+	if (!of_property_read_u32(np, "fsl,tx-cal-45-dn-ohms", &val) &&
+	    val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) {
+		/* Scale to a 4-bit value */
+		val = (MXS_PHY_TX_CAL45_MAX - val) * 0xF
+			/ (MXS_PHY_TX_CAL45_MAX - MXS_PHY_TX_CAL45_MIN);
+		mxs_phy->tx_reg_mask |= GM_USBPHY_TX_TXCAL45DN(~0);
+		mxs_phy->tx_reg_set  |= GM_USBPHY_TX_TXCAL45DN(val);
+	}
+
+	if (!of_property_read_u32(np, "fsl,tx-cal-45-dp-ohms", &val) &&
+	    val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) {
+		/* Scale to a 4-bit value. */
+		val = (MXS_PHY_TX_CAL45_MAX - val) * 0xF
+			/ (MXS_PHY_TX_CAL45_MAX - MXS_PHY_TX_CAL45_MIN);
+		mxs_phy->tx_reg_mask |= GM_USBPHY_TX_TXCAL45DP(~0);
+		mxs_phy->tx_reg_set  |= GM_USBPHY_TX_TXCAL45DP(val);
+	}
+
+	if (!of_property_read_u32(np, "fsl,tx-d-cal", &val) &&
+	    val >= MXS_PHY_TX_D_CAL_MIN && val <= MXS_PHY_TX_D_CAL_MAX) {
+		/* Scale to a 4-bit value.  Round up the values and heavily
+		 * weight the rounding by adding 2/3 of the denominator.
+		 */
+		val = ((MXS_PHY_TX_D_CAL_MAX - val) * 0xF
+			+ (MXS_PHY_TX_D_CAL_MAX - MXS_PHY_TX_D_CAL_MIN) * 2/3)
+			/ (MXS_PHY_TX_D_CAL_MAX - MXS_PHY_TX_D_CAL_MIN);
+		mxs_phy->tx_reg_mask |= GM_USBPHY_TX_D_CAL(~0);
+		mxs_phy->tx_reg_set  |= GM_USBPHY_TX_D_CAL(val);
 	}
 
 	ret = of_alias_get_id(np, "usbphy");

drivers/usb/renesas_usbhs/common.c

···
 		.data = (void *)USBHS_TYPE_RCAR_GEN3,
 	},
 	{
+		.compatible = "renesas,usbhs-r8a7796",
+		.data = (void *)USBHS_TYPE_RCAR_GEN3,
+	},
+	{
 		.compatible = "renesas,rcar-gen2-usbhs",
 		.data = (void *)USBHS_TYPE_RCAR_GEN2,
 	},

drivers/usb/renesas_usbhs/mod_gadget.c

···
 	buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
 	if (!buf) {
 		usb_ep_free_request(&dcp->ep, req);
-		dev_err(dev, "recip data allocation fail\n");
 		return;
 	}
 
···
 	int ret;
 
 	gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
-	if (!gpriv) {
-		dev_err(dev, "Could not allocate gadget priv\n");
+	if (!gpriv)
 		return -ENOMEM;
-	}
 
 	uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
 	if (!uep) {
-		dev_err(dev, "Could not allocate ep\n");
 		ret = -ENOMEM;
 		goto usbhs_mod_gadget_probe_err_gpriv;
 	}
···
 	gpriv->gadget.name		= "renesas_usbhs_udc";
 	gpriv->gadget.ops		= &usbhsg_gadget_ops;
 	gpriv->gadget.max_speed		= USB_SPEED_HIGH;
+	gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv,
+								has_usb_dmac);
 
 	INIT_LIST_HEAD(&gpriv->gadget.ep_list);
 

drivers/usb/renesas_usbhs/mod_host.c

···
 					       gfp_t mem_flags)
 {
 	struct usbhsh_request *ureq;
-	struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
-	struct device *dev = usbhs_priv_to_dev(priv);
 
 	ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
-	if (!ureq) {
-		dev_err(dev, "ureq alloc fail\n");
+	if (!ureq)
 		return NULL;
-	}
 
 	usbhs_pkt_init(&ureq->pkt);
 	ureq->urb = urb;
···
 	unsigned long flags;
 
 	uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
-	if (!uep) {
-		dev_err(dev, "usbhsh_ep alloc fail\n");
+	if (!uep)
 		return -ENOMEM;
-	}
 
 	/********************  spin lock ********************/
 	usbhs_lock(priv, flags);

drivers/usb/renesas_usbhs/pipe.c

···
 	}
 
 	info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL);
-	if (!info->pipe) {
-		dev_err(dev, "Could not allocate pipe\n");
+	if (!info->pipe)
 		return -ENOMEM;
-	}
 
 	info->size = pipe_size;
 

drivers/usb/serial/cp210x.c

···
 	{ USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */
 	{ USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */
 	{ USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
+	{ USB_DEVICE(0x10C4, 0x8470) }, /* Juniper Networks BX Series System Console */
 	{ USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */
 	{ USB_DEVICE(0x10C4, 0x84B6) }, /* Starizona Hyperion */
 	{ USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */

drivers/usb/serial/keyspan_pda.c

···
 #include <linux/usb/ezusb.h>
 
 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
-#if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
+#if IS_ENABLED(CONFIG_USB_SERIAL_KEYSPAN_PDA)
 	#define KEYSPAN
 #else
 	#undef KEYSPAN
 #endif
-#if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
+#if IS_ENABLED(CONFIG_USB_SERIAL_XIRCOM)
 	#define XIRCOM
 #else
 	#undef XIRCOM

drivers/usb/serial/ti_usb_3410_5052.c

···
 
 /* Config struct */
 struct ti_uart_config {
-	__u16	wBaudRate;
-	__u16	wFlags;
-	__u8	bDataBits;
-	__u8	bParity;
-	__u8	bStopBits;
+	__be16	wBaudRate;
+	__be16	wFlags;
+	u8	bDataBits;
+	u8	bParity;
+	u8	bStopBits;
 	char	cXon;
 	char	cXoff;
-	__u8	bUartMode;
+	u8	bUartMode;
 } __packed;
 
 /* Get port status */
 struct ti_port_status {
-	__u8	bCmdCode;
-	__u8	bModuleId;
-	__u8	bErrorCode;
-	__u8	bMSR;
-	__u8	bLSR;
+	u8 bCmdCode;
+	u8 bModuleId;
+	u8 bErrorCode;
+	u8 bMSR;
+	u8 bLSR;
 } __packed;
 
 /* Purge modes */
···
 #define TI_RW_DATA_DOUBLE_WORD		0x04
 
 struct ti_write_data_bytes {
-	__u8	bAddrType;
-	__u8	bDataType;
-	__u8	bDataCounter;
+	u8	bAddrType;
+	u8	bDataType;
+	u8	bDataCounter;
 	__be16	wBaseAddrHi;
 	__be16	wBaseAddrLo;
-	__u8	bData[0];
+	u8	bData[0];
 } __packed;
 
 struct ti_read_data_request {
···
 /* Firmware image header */
 struct ti_firmware_header {
 	__le16	wLength;
-	__u8	bCheckSum;
+	u8	bCheckSum;
 } __packed;
 
 /* UART addresses */
···
 
 #define TI_DEFAULT_CLOSING_WAIT	4000		/* in .01 secs */
 
-/* supported setserial flags */
-#define TI_SET_SERIAL_FLAGS	0
-
 /* read urb states */
 #define TI_READ_URB_RUNNING	0
 #define TI_READ_URB_STOPPING	1
···
 
 struct ti_port {
 	int			tp_is_open;
-	__u8			tp_msr;
-	__u8			tp_shadow_mcr;
-	__u8			tp_uart_mode;	/* 232 or 485 modes */
+	u8			tp_msr;
+	u8			tp_shadow_mcr;
+	u8			tp_uart_mode;	/* 232 or 485 modes */
 	unsigned int		tp_uart_base_addr;
-	int			tp_flags;
 	struct ti_device	*tp_tdev;
 	struct usb_serial_port	*tp_port;
 	spinlock_t		tp_lock;
···
 	struct usb_serial	*td_serial;
 	int			td_is_3410;
 	bool			td_rs485_only;
-	int			td_urb_error;
 };
 
 static int ti_startup(struct usb_serial *serial);
···
 	struct serial_struct __user *ret_arg);
 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
 	struct serial_struct __user *new_arg);
-static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
+static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
 
 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
···
 	__u16 moduleid, __u16 value, __u8 *data, int size);
 
 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
-			 unsigned long addr, __u8 mask, __u8 byte);
+			 unsigned long addr, u8 mask, u8 byte);
 
 static int ti_download_firmware(struct ti_device *tdev);
 
···
 	struct urb *urb;
 	int port_number;
 	int status;
-	__u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINUOUS |
-			     TI_PIPE_TIMEOUT_ENABLE |
-			     (TI_TRANSFER_TIMEOUT << 2));
+	u16 open_settings;
 
-	if (tport == NULL)
-		return -ENODEV;
+	open_settings = (TI_PIPE_MODE_CONTINUOUS |
+			 TI_PIPE_TIMEOUT_ENABLE |
+			 (TI_TRANSFER_TIMEOUT << 2));
 
 	dev = port->serial->dev;
 	tdev = tport->tp_tdev;
···
 	if (tty)
 		ti_set_termios(tty, port, &tty->termios);
 
-	dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
 	status = ti_command_out_sync(tdev, TI_OPEN_PORT,
 		(__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
 	if (status) {
···
 		goto unlink_int_urb;
 	}
 
-	dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
 	status = ti_command_out_sync(tdev, TI_START_PORT,
 		(__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
 	if (status) {
···
 		goto unlink_int_urb;
 	}
 
-	dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
 	status = ti_command_out_sync(tdev, TI_PURGE_PORT,
 		(__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
 	if (status) {
···
 	if (tty)
 		ti_set_termios(tty, port, &tty->termios);
 
-	dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
 	status = ti_command_out_sync(tdev, TI_OPEN_PORT,
 		(__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
 	if (status) {
···
 		goto unlink_int_urb;
 	}
 
-	dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
 	status = ti_command_out_sync(tdev, TI_START_PORT,
 		(__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
 	if (status) {
···
 	}
 
 	/* start read urb */
-	dev_dbg(&port->dev, "%s - start read urb\n", __func__);
 	urb = port->read_urb;
 	if (!urb) {
 		dev_err(&port->dev, "%s - no read urb\n", __func__);
···
 		usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
 release_lock:
 	mutex_unlock(&tdev->td_open_close_lock);
-	dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
 	return status;
 }
 
···
 
 	tdev = usb_get_serial_data(port->serial);
 	tport = usb_get_serial_port_data(port);
-	if (tdev == NULL || tport == NULL)
-		return;
 
 	tport->tp_is_open = 0;
 
···
 
 	port_number = port->port_number;
 
-	dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
 	status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
 		     (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
 	if (status)
···
 	struct ti_port *tport = usb_get_serial_port_data(port);
 
 	if (count == 0) {
-		dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
 		return 0;
 	}
 
-	if (tport == NULL || !tport->tp_is_open)
+	if (!tport->tp_is_open)
 		return -ENODEV;
 
 	count = kfifo_in_locked(&port->write_fifo, data, count,
···
 	int room = 0;
 	unsigned long flags;
 
-	if (tport == NULL)
-		return 0;
-
 	spin_lock_irqsave(&tport->tp_lock, flags);
 	room = kfifo_avail(&port->write_fifo);
 	spin_unlock_irqrestore(&tport->tp_lock, flags);
···
 	struct ti_port *tport = usb_get_serial_port_data(port);
 	int chars = 0;
 	unsigned long flags;
-
-	if (tport == NULL)
-		return 0;
 
 	spin_lock_irqsave(&tport->tp_lock, flags);
 	chars = kfifo_len(&port->write_fifo);
···
 	struct usb_serial_port *port = tty->driver_data;
 	struct ti_port *tport = usb_get_serial_port_data(port);
 
-	if (tport == NULL)
-		return;
-
 	if (I_IXOFF(tty) || C_CRTSCTS(tty))
 		ti_stop_read(tport, tty);
 
···
 	struct usb_serial_port *port = tty->driver_data;
 	struct ti_port *tport = usb_get_serial_port_data(port);
 	int status;
-
-	if (tport == NULL)
-		return;
 
 	if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
 		status = ti_restart_read(tport, tty);
···
 	struct usb_serial_port *port = tty->driver_data;
 	struct ti_port *tport = usb_get_serial_port_data(port);
 
-	if (tport == NULL)
-		return -ENODEV;
-
 	switch (cmd) {
 	case TIOCGSERIAL:
-		dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
 		return ti_get_serial_info(tport,
 				(struct serial_struct __user *)arg);
 	case TIOCSSERIAL:
-		dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
 		return ti_set_serial_info(tty, tport,
 				(struct serial_struct __user *)arg);
 	}
···
 	int status;
 	int port_number = port->port_number;
 	unsigned int mcr;
+	u16 wbaudrate;
+	u16 wflags = 0;
 
 	cflag = tty->termios.c_cflag;
 	iflag = tty->termios.c_iflag;
···
 	dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
 		old_termios->c_cflag, old_termios->c_iflag);
 
-	if (tport == NULL)
-		return;
-
 	config = kmalloc(sizeof(*config), GFP_KERNEL);
 	if (!config)
 		return;
 
-	config->wFlags = 0;
-
 	/* these flags must be set */
-	config->wFlags |= TI_UART_ENABLE_MS_INTS;
-	config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
-	config->bUartMode = (__u8)(tport->tp_uart_mode);
+	wflags |= TI_UART_ENABLE_MS_INTS;
+	wflags |= TI_UART_ENABLE_AUTO_START_DMA;
+	config->bUartMode = tport->tp_uart_mode;
 
-	switch (cflag & CSIZE) {
+	switch (C_CSIZE(tty)) {
 	case CS5:
 		    config->bDataBits = TI_UART_5_DATA_BITS;
 		    break;
···
 	/* CMSPAR isn't supported by this driver */
 	tty->termios.c_cflag &= ~CMSPAR;
 
-	if (cflag & PARENB) {
-		if (cflag & PARODD) {
-			config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
+	if (C_PARENB(tty)) {
+		if (C_PARODD(tty)) {
+			wflags |= TI_UART_ENABLE_PARITY_CHECKING;
 			config->bParity = TI_UART_ODD_PARITY;
 		} else {
-			config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
+			wflags |= TI_UART_ENABLE_PARITY_CHECKING;
 			config->bParity = TI_UART_EVEN_PARITY;
 		}
 	} else {
-		config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
+		wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
 		config->bParity = TI_UART_NO_PARITY;
 	}
 
-	if (cflag & CSTOPB)
+	if (C_CSTOPB(tty))
 		config->bStopBits = TI_UART_2_STOP_BITS;
 	else
 		config->bStopBits = TI_UART_1_STOP_BITS;
 
-	if (cflag & CRTSCTS) {
+	if (C_CRTSCTS(tty)) {
 		/* RTS flow control must be off to drop RTS for baud rate B0 */
-		if ((cflag & CBAUD) != B0)
-			config->wFlags |= TI_UART_ENABLE_RTS_IN;
-		config->wFlags |= TI_UART_ENABLE_CTS_OUT;
+		if ((C_BAUD(tty)) != B0)
+			wflags |= TI_UART_ENABLE_RTS_IN;
+		wflags |= TI_UART_ENABLE_CTS_OUT;
 	} else {
 		ti_restart_read(tport, tty);
 	}
···
 		config->cXoff = STOP_CHAR(tty);
 
 		if (I_IXOFF(tty))
-			config->wFlags |= TI_UART_ENABLE_X_IN;
+			wflags |= TI_UART_ENABLE_X_IN;
 		else
 			ti_restart_read(tport, tty);
 
 		if (I_IXON(tty))
-			config->wFlags |= TI_UART_ENABLE_X_OUT;
+			wflags |= TI_UART_ENABLE_X_OUT;
 	}
 
 	baud = tty_get_baud_rate(tty);
 	if (!baud)
 		baud = 9600;
 	if (tport->tp_tdev->td_is_3410)
-		config->wBaudRate = (__u16)((923077 + baud/2) / baud);
+		wbaudrate = (923077 + baud/2) / baud;
 	else
-		config->wBaudRate = (__u16)((461538 + baud/2) / baud);
+		wbaudrate = (461538 + baud/2) / baud;
 
 	/* FIXME: Should calculate resulting baud here and report it back */
-	if ((cflag & CBAUD) != B0)
+	if ((C_BAUD(tty)) != B0)
 		tty_encode_baud_rate(tty, baud, baud);
 
 	dev_dbg(&port->dev,
 		"%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
-		__func__, baud, config->wBaudRate, config->wFlags,
+		__func__, baud, wbaudrate, wflags,
 		config->bDataBits, config->bParity, config->bStopBits,
 		config->cXon, config->cXoff, config->bUartMode);
 
-	cpu_to_be16s(&config->wBaudRate);
-	cpu_to_be16s(&config->wFlags);
+	config->wBaudRate = cpu_to_be16(wbaudrate);
+	config->wFlags = cpu_to_be16(wflags);
 
 	status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
 		(__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
···
 	/* SET_CONFIG asserts RTS and DTR, reset them correctly */
 	mcr = tport->tp_shadow_mcr;
 	/* if baud rate is B0, clear RTS and DTR */
-	if ((cflag & CBAUD) == B0)
+	if (C_BAUD(tty) == B0)
 		mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
 	status = ti_set_mcr(tport, mcr);
 	if (status)
···
 	unsigned int msr;
 	unsigned int mcr;
 	unsigned long flags;
-
-	if (tport == NULL)
-		return -ENODEV;
 
 	spin_lock_irqsave(&tport->tp_lock, flags);
 	msr = tport->tp_msr;
···
 	struct ti_port *tport = usb_get_serial_port_data(port);
 	unsigned int mcr;
 	unsigned long flags;
-
-	if (tport == NULL)
-		return -ENODEV;
 
 	spin_lock_irqsave(&tport->tp_lock, flags);
 	mcr = tport->tp_shadow_mcr;
···
 	int status;
 
 	dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
-
-	if (tport == NULL)
-		return;
 
 	status = ti_write_byte(port, tport->tp_tdev,
 		tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
···
 	int function;
 	int status = urb->status;
 	int retval;
-	__u8 msr;
+	u8 msr;
 
 	switch (status) {
 	case 0:
···
 	case -ENOENT:
 	case -ESHUTDOWN:
 		dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
-		tdev->td_urb_error = 1;
 		return;
 	default:
 		dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
-		tdev->td_urb_error = 1;
 		goto exit;
 	}
 
···
 	case -ENOENT:
 	case -ESHUTDOWN:
 		dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
-		tport->tp_tdev->td_urb_error = 1;
 		return;
 	default:
 		dev_err(dev, "%s - nonzero urb status, %d\n",
 			__func__, status);
-		tport->tp_tdev->td_urb_error = 1;
 	}
 
 	if (status == -EPIPE)
···
 	case -ENOENT:
 	case -ESHUTDOWN:
 		dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
-		tport->tp_tdev->td_urb_error = 1;
 		return;
 	default:
 		dev_err_console(port, "%s - nonzero urb status, %d\n",
 			__func__, status);
-		tport->tp_tdev->td_urb_error = 1;
 	}
 
 	/* send any buffered data */
···
 	ret_serial.type = PORT_16550A;
 	ret_serial.line = port->minor;
 	ret_serial.port = port->port_number;
-	ret_serial.flags = tport->tp_flags;
 	ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
 	ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
 	ret_serial.closing_wait = cwait;
···
 	if (cwait != ASYNC_CLOSING_WAIT_NONE)
 		cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
 
-	tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
 	tport->tp_port->port.closing_wait = cwait;
 
 	return 0;
 }
 
 
-static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
+static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
 {
 	struct async_icount *icount;
 	struct tty_struct *tty;
···
 
 
 static int ti_write_byte(struct usb_serial_port *port,
-			struct ti_device *tdev, unsigned long addr,
-			__u8 mask, __u8 byte)
+			 struct ti_device *tdev, unsigned long addr,
+			 u8 mask, u8 byte)
 {
 	int status;
 	unsigned int size;
···
 	int len;
 
 	for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
-		cs = (__u8)(cs + buffer[pos]);
+		cs = (u8)(cs + buffer[pos]);
 
 	header = (struct ti_firmware_header *)buffer;
-	header->wLength = cpu_to_le16((__u16)(size
-					- sizeof(struct ti_firmware_header)));
+	header->wLength = cpu_to_le16(size - sizeof(*header));
 	header->bCheckSum = cs;
 
 	dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
···
 {
 	int status;
 	int buffer_size;
-	__u8 *buffer;
+	u8 *buffer;
 	struct usb_device *dev = tdev->td_serial->dev;
 	unsigned int pipe = usb_sndbulkpipe(dev,
 		tdev->td_serial->port[0]->bulk_out_endpointAddress);

drivers/usb/storage/alauda.c

···
 
 	len = min(sectors, blocksize) * (pagesize + 64);
 	buffer = kmalloc(len, GFP_NOIO);
-	if (buffer == NULL) {
-		printk(KERN_WARNING "alauda_read_data: Out of memory\n");
+	if (!buffer)
 		return USB_STOR_TRANSPORT_ERROR;
-	}
 
 	/* Figure out the initial LBA and page */
 	lba = address >> blockshift;
···
 
 	len = min(sectors, blocksize) * pagesize;
 	buffer = kmalloc(len, GFP_NOIO);
-	if (buffer == NULL) {
-		printk(KERN_WARNING "alauda_write_data: Out of memory\n");
+	if (!buffer)
 		return USB_STOR_TRANSPORT_ERROR;
-	}
 
 	/*
 	 * We also need a temporary block buffer, where we read in the old data,
 	 * overwrite parts with the new data, and manipulate the redundancy data
 	 */
 	blockbuffer = kmalloc((pagesize + 64) * blocksize, GFP_NOIO);
-	if (blockbuffer == NULL) {
-		printk(KERN_WARNING "alauda_write_data: Out of memory\n");
+	if (!blockbuffer) {
 		kfree(buffer);
 		return USB_STOR_TRANSPORT_ERROR;
 	}

drivers/usb/storage/scsiglue.c

···
 		if (us->fflags & US_FL_BROKEN_FUA)
 			sdev->broken_fua = 1;
 
+		/* Some even totally fail to indicate a cache */
+		if (us->fflags & US_FL_ALWAYS_SYNC) {
+			/* don't read caching information */
+			sdev->skip_ms_page_8 = 1;
+			sdev->skip_ms_page_3f = 1;
+			/* assume sync is needed */
+			sdev->wce_default_on = 1;
+		}
 	} else {
 
 		/*

drivers/usb/storage/sddr09.c

···
 
 	len = min(sectors, (unsigned int) info->blocksize) * info->pagesize;
 	buffer = kmalloc(len, GFP_NOIO);
-	if (buffer == NULL) {
-		printk(KERN_WARNING "sddr09_read_data: Out of memory\n");
+	if (!buffer)
 		return -ENOMEM;
-	}
 
 	// This could be made much more efficient by checking for
 	// contiguous LBA's. Another exercise left to the student.
···
 	pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
 	blocklen = (pagelen << info->blockshift);
 	blockbuffer = kmalloc(blocklen, GFP_NOIO);
-	if (!blockbuffer) {
-		printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
+	if (!blockbuffer)
 		return -ENOMEM;
-	}
 
 	/*
 	 * Since we don't write the user data directly to the device,
···
 
 	len = min(sectors, (unsigned int) info->blocksize) * info->pagesize;
 	buffer = kmalloc(len, GFP_NOIO);
-	if (buffer == NULL) {
-		printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
+	if (!buffer) {
 		kfree(blockbuffer);
 		return -ENOMEM;
 	}
···
 	alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT);
 	alloc_len = (alloc_blocks << CONTROL_SHIFT);
 	buffer = kmalloc(alloc_len, GFP_NOIO);
-	if (buffer == NULL) {
-		printk(KERN_WARNING "sddr09_read_map: out of memory\n");
+	if (!buffer) {
 		result = -1;
 		goto done;
 	}

drivers/usb/storage/unusual_devs.h

···
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_NO_WP_DETECT),
 
+/* Reported by Egbert Eich <[e-mail]> */
+UNUSUAL_DEV(  0x0480, 0xd010, 0x0100, 0x9999,
+		"Toshiba",
+		"External USB 3.0",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_ALWAYS_SYNC),
+
 /* Patch submitted by Philipp Friedrich <[e-mail]> */
 UNUSUAL_DEV(  0x0482, 0x0100, 0x0100, 0x0100,
 		"Kyocera",

drivers/usb/storage/usb.c

···
 			US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 |
 			US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE |
 			US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES |
-			US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS);
+			US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS |
+			US_FL_ALWAYS_SYNC);
 
 	p = quirks;
 	while (*p) {
···
 			break;
 		case 'w':
 			f |= US_FL_NO_WP_DETECT;
+			break;
+		case 'y':
+			f |= US_FL_ALWAYS_SYNC;
 			break;
 		/* Ignore unrecognized flag characters */
 		}
···
 	struct task_struct *th;
 
 	us->current_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!us->current_urb) {
-		usb_stor_dbg(us, "URB allocation failed\n");
+	if (!us->current_urb)
 		return -ENOMEM;
-	}
 
 	/*
 	 * Just before we start our control thread, initialize
···
 	result = usb_stor_acquire_resources(us);
 	if (result)
 		goto BadDevice;
+	usb_autopm_get_interface_no_resume(us->pusb_intf);
 	snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s",
 					dev_name(&us->pusb_intf->dev));
 	result = scsi_add_host(us_to_host(us), dev);
 	if (result) {
 		dev_warn(dev,
 				"Unable to add the scsi host\n");
-		goto BadDevice;
+		goto HostAddErr;
 	}
 
 	/* Submit the delayed_work for SCSI-device scanning */
-	usb_autopm_get_interface_no_resume(us->pusb_intf);
 	set_bit(US_FLIDX_SCAN_PENDING, &us->dflags);
 
 	if (delay_use > 0)
···
 	return 0;
 
 	/* We come here if there are any problems */
+HostAddErr:
+	usb_autopm_put_interface_no_suspend(us->pusb_intf);
 BadDevice:
 	usb_stor_dbg(us, "storage_probe() failed\n");
 	release_everything(us);

drivers/usb/usb-skeleton.c

···
 
 	/* allocate memory for our device state and initialize it */
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (!dev) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev)
 		goto error;
-	}
 	kref_init(&dev->kref);
 	sema_init(&dev->limit_sem, WRITES_IN_FLIGHT);
 	mutex_init(&dev->io_mutex);
···
 			dev->bulk_in_size = buffer_size;
 			dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
 			dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
-			if (!dev->bulk_in_buffer) {
-				dev_err(&interface->dev,
-					"Could not allocate bulk_in_buffer\n");
+			if (!dev->bulk_in_buffer)
 				goto error;
-			}
 			dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-			if (!dev->bulk_in_urb) {
-				dev_err(&interface->dev,
-					"Could not allocate bulk_in_urb\n");
+			if (!dev->bulk_in_urb)
 				goto error;
-			}
 		}
 
 		if (!dev->bulk_out_endpointAddr &&

drivers/usb/usbip/Kconfig

···
 config USBIP_CORE
 	tristate "USB/IP support"
-	depends on USB_COMMON && NET
+	depends on NET
+	select USB_COMMON
 	---help---
 	  This enables pushing USB packets over IP to allow remote
 	  machines direct access to USB devices. It provides the
···
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called vhci-hcd.
+
+config USBIP_VHCI_HC_PORTS
+	int "Number of ports per USB/IP virtual host controller"
+	range 1 31
+	default 8
+	depends on USBIP_VHCI_HCD
+	---help---
+	  To increase number of ports available for USB/IP virtual
+	  host controller driver, this defines number of ports per
+	  USB/IP virtual host controller.
+
+config USBIP_VHCI_NR_HCS
+	int "Number of USB/IP virtual host controllers"
+	range 1 128
+	default 1
+	depends on USBIP_VHCI_HCD
+	---help---
+	  To increase number of ports available for USB/IP virtual
+	  host controller driver, this defines number of USB/IP
+	  virtual host controllers as if adding physical host
+	  controllers.
 
 config USBIP_HOST
 	tristate "Host driver"

drivers/usb/usbip/stub_rx.c

···
 		priv->urb = usb_alloc_urb(0, GFP_KERNEL);
 
 	if (!priv->urb) {
-		dev_err(&udev->dev, "malloc urb\n");
 		usbip_event_add(ud, SDEV_EVENT_ERROR_MALLOC);
 		return;
 	}

drivers/usb/usbip/vhci.h

···
 /*
  * Copyright (C) 2003-2008 Takahiro Hirofuchi
+ * Copyright (C) 2015 Nobuo Iwata
  *
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
···
 };
 
 /* Number of supported ports. Value has an upperbound of USB_MAXCHILDREN */
-#define VHCI_NPORTS 8
+#ifdef CONFIG_USBIP_VHCI_HC_PORTS
+#define VHCI_HC_PORTS CONFIG_USBIP_VHCI_HC_PORTS
+#else
+#define VHCI_HC_PORTS 8
+#endif
+
+#ifdef CONFIG_USBIP_VHCI_NR_HCS
+#define VHCI_NR_HCS CONFIG_USBIP_VHCI_NR_HCS
+#else
+#define VHCI_NR_HCS 1
+#endif
+
+#define MAX_STATUS_NAME 16
 
 /* for usb_bus.hcpriv */
 struct vhci_hcd {
 	spinlock_t lock;
 
-	u32 port_status[VHCI_NPORTS];
+	u32 port_status[VHCI_HC_PORTS];
 
 	unsigned resuming:1;
 	unsigned long re_timeout;
···
 	 * wIndex shows the port number and begins from 1.
 	 * But, the index of this array begins from 0.
 	 */
-	struct vhci_device vdev[VHCI_NPORTS];
+	struct vhci_device vdev[VHCI_HC_PORTS];
 };
 
-extern struct vhci_hcd *the_controller;
-extern const struct attribute_group dev_attr_group;
+extern int vhci_num_controllers;
+extern struct platform_device **vhci_pdevs;
+extern struct attribute_group vhci_attr_group;
 
 /* vhci_hcd.c */
-void rh_port_connect(int rhport, enum usb_device_speed speed);
+void rh_port_connect(struct vhci_device *vdev, enum usb_device_speed speed);
+
+/* vhci_sysfs.c */
+int vhci_init_attr_group(void);
+void vhci_finish_attr_group(void);
 
 /* vhci_rx.c */
 struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum);
···
 /* vhci_tx.c */
 int vhci_tx_loop(void *data);
 
-static inline struct vhci_device *port_to_vdev(__u32 port)
+static inline __u32 port_to_rhport(__u32 port)
 {
-	return &the_controller->vdev[port];
+	return port % VHCI_HC_PORTS;
+}
+
+static inline int port_to_pdev_nr(__u32 port)
+{
+	return port / VHCI_HC_PORTS;
 }
 
 static inline struct vhci_hcd *hcd_to_vhci(struct usb_hcd *hcd)
···
 	return (struct vhci_hcd *) (hcd->hcd_priv);
 }
 
+static inline struct device *hcd_dev(struct usb_hcd *hcd)
+{
+	return (hcd)->self.controller;
+}
+
+static inline const char *hcd_name(struct usb_hcd *hcd)
+{
+	return (hcd)->self.bus_name;
+}
+
 static inline struct usb_hcd *vhci_to_hcd(struct vhci_hcd *vhci)
 {
 	return container_of((void *) vhci, struct usb_hcd, hcd_priv);
 }
 
-static inline struct device *vhci_dev(struct vhci_hcd *vhci)
+static inline struct vhci_hcd *vdev_to_vhci(struct vhci_device *vdev)
 {
-	return vhci_to_hcd(vhci)->self.controller;
+	return container_of(
+			(void *)(vdev - vdev->rhport), struct vhci_hcd, vdev);
 }
 
 #endif /* __USBIP_VHCI_H */

drivers/usb/usbip/vhci_hcd.c

···
 /*
  * Copyright (C) 2003-2008 Takahiro Hirofuchi
+ * Copyright (C) 2015-2016 Nobuo Iwata
  *
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
···
 static const char driver_name[] = "vhci_hcd";
 static const char driver_desc[] = "USB/IP Virtual Host Controller";
 
-struct vhci_hcd *the_controller;
+int vhci_num_controllers = VHCI_NR_HCS;
+
+struct platform_device **vhci_pdevs;
 
 static const char * const bit_desc[] = {
 	"CONNECTION",		/*0*/
···
 	pr_debug("\n");
 }
 
-void rh_port_connect(int rhport, enum usb_device_speed speed)
+void rh_port_connect(struct vhci_device *vdev, enum usb_device_speed speed)
 {
+	struct vhci_hcd	*vhci = vdev_to_vhci(vdev);
+	int		rhport = vdev->rhport;
+	u32		status;
 	unsigned long	flags;
 
 	usbip_dbg_vhci_rh("rh_port_connect %d\n", rhport);
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
 
-	the_controller->port_status[rhport] |= USB_PORT_STAT_CONNECTION
-		| (1 << USB_PORT_FEAT_C_CONNECTION);
+	status = vhci->port_status[rhport];
+
+	status |= USB_PORT_STAT_CONNECTION | (1 << USB_PORT_FEAT_C_CONNECTION);
 
 	switch (speed) {
 	case USB_SPEED_HIGH:
-		the_controller->port_status[rhport] |= USB_PORT_STAT_HIGH_SPEED;
+		status |= USB_PORT_STAT_HIGH_SPEED;
 		break;
 	case USB_SPEED_LOW:
-		the_controller->port_status[rhport] |= USB_PORT_STAT_LOW_SPEED;
+		status |= USB_PORT_STAT_LOW_SPEED;
 		break;
 	default:
 		break;
 	}
 
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	vhci->port_status[rhport] = status;
 
-	usb_hcd_poll_rh_status(vhci_to_hcd(the_controller));
+	spin_unlock_irqrestore(&vhci->lock, flags);
+
+	usb_hcd_poll_rh_status(vhci_to_hcd(vhci));
 }
 
-static void rh_port_disconnect(int rhport)
+static void rh_port_disconnect(struct vhci_device *vdev)
 {
+	struct vhci_hcd	*vhci = vdev_to_vhci(vdev);
+	int		rhport = vdev->rhport;
+	u32		status;
 	unsigned long	flags;
 
 	usbip_dbg_vhci_rh("rh_port_disconnect %d\n", rhport);
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
 
-	the_controller->port_status[rhport] &= ~USB_PORT_STAT_CONNECTION;
-	the_controller->port_status[rhport] |=
-					(1 << USB_PORT_FEAT_C_CONNECTION);
+	status = vhci->port_status[rhport];
 
-	spin_unlock_irqrestore(&the_controller->lock, flags);
-	usb_hcd_poll_rh_status(vhci_to_hcd(the_controller));
+	status &= ~USB_PORT_STAT_CONNECTION;
+	status |= (1 << USB_PORT_FEAT_C_CONNECTION);
+
+	vhci->port_status[rhport] = status;
+
+	spin_unlock_irqrestore(&vhci->lock, flags);
+	usb_hcd_poll_rh_status(vhci_to_hcd(vhci));
 }
 
 #define PORT_C_MASK				\
···
 	int		changed = 0;
 	unsigned long	flags;
 
-	retval = DIV_ROUND_UP(VHCI_NPORTS + 1, 8);
+	retval = DIV_ROUND_UP(VHCI_HC_PORTS + 1, 8);
 	memset(buf, 0, retval);
 
 	vhci = hcd_to_vhci(hcd);
···
 	}
 
 	/* check pseudo status register for each port */
-	for (rhport = 0; rhport < VHCI_NPORTS; rhport++) {
+	for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) {
 		if ((vhci->port_status[rhport] & PORT_C_MASK)) {
 			/* The status of a port has been changed, */
 			usbip_dbg_vhci_rh("port %d status changed\n", rhport);
···
 	desc->bDescLength = 9;
 	desc->wHubCharacteristics = cpu_to_le16(
 		HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_COMMON_OCPM);
-	desc->bNbrPorts = VHCI_NPORTS;
+	desc->bNbrPorts = VHCI_HC_PORTS;
 	desc->u.hs.DeviceRemovable[0] = 0xff;
 	desc->u.hs.DeviceRemovable[1] = 0xff;
 }
···
 	int		rhport;
 	unsigned long	flags;
 
-	u32 prev_port_status[VHCI_NPORTS];
+	u32 prev_port_status[VHCI_HC_PORTS];
 
 	if (!HCD_HW_ACCESSIBLE(hcd))
 		return -ETIMEDOUT;
···
 	 */
 	usbip_dbg_vhci_rh("typeReq %x wValue %x wIndex %x\n", typeReq, wValue,
 			  wIndex);
-	if (wIndex > VHCI_NPORTS)
+	if (wIndex > VHCI_HC_PORTS)
 		pr_err("invalid port number %d\n", wIndex);
 	rhport = ((__u8)(wIndex & 0x00ff)) - 1;
 
···
 		break;
 	case GetPortStatus:
 		usbip_dbg_vhci_rh(" GetPortStatus port %x\n", wIndex);
-		if (wIndex > VHCI_NPORTS || wIndex < 1) {
+		if (wIndex > VHCI_HC_PORTS || wIndex < 1) {
 			pr_err("invalid port number %d\n", wIndex);
 			retval = -EPIPE;
 		}
···
 
 static struct vhci_device *get_vdev(struct usb_device *udev)
 {
-	int i;
+	struct platform_device *pdev;
+	struct usb_hcd *hcd;
+	struct vhci_hcd *vhci;
+	int pdev_nr, rhport;
 
 	if (!udev)
 		return NULL;
 
-	for (i = 0; i < VHCI_NPORTS; i++)
-		if (the_controller->vdev[i].udev == udev)
-			return port_to_vdev(i);
+	for (pdev_nr = 0; pdev_nr < vhci_num_controllers; pdev_nr++) {
+		pdev = *(vhci_pdevs + pdev_nr);
+		if (pdev == NULL)
+			continue;
+		hcd = platform_get_drvdata(pdev);
+		if (hcd == NULL)
+			continue;
+		vhci = hcd_to_vhci(hcd);
+		for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) {
+			if (vhci->vdev[rhport].udev == udev)
+				return &vhci->vdev[rhport];
+		}
+	}
 
 	return NULL;
 }
···
 {
 	struct vhci_device *vdev = get_vdev(urb->dev);
 	struct vhci_priv *priv;
+	struct vhci_hcd *vhci = vdev_to_vhci(vdev);
 	unsigned long flags;
 
 	if (!vdev) {
···
 
 	spin_lock_irqsave(&vdev->priv_lock, flags);
 
-	priv->seqnum = atomic_inc_return(&the_controller->seqnum);
+	priv->seqnum = atomic_inc_return(&vhci->seqnum);
 	if (priv->seqnum == 0xffff)
 		dev_info(&urb->dev->dev, "seqnum max\n");
 
···
 static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 			    gfp_t mem_flags)
 {
+	struct vhci_hcd *vhci = hcd_to_vhci(hcd);
 	struct device *dev = &urb->dev->dev;
+	u8 portnum = urb->dev->portnum;
 	int ret = 0;
 	struct vhci_device *vdev;
 	unsigned long flags;
···
 	usbip_dbg_vhci_hc("enter, usb_hcd %p urb %p mem_flags %d\n",
 			  hcd, urb, mem_flags);
 
+	if (portnum > VHCI_HC_PORTS) {
+		pr_err("invalid port number %d\n", portnum);
+		return -ENODEV;
+	}
+	vdev = &vhci->vdev[portnum-1];
+
 	/* patch to usb_sg_init() is in 2.5.60 */
 	BUG_ON(!urb->transfer_buffer && urb->transfer_buffer_length);
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
 
 	if (urb->status != -EINPROGRESS) {
 		dev_err(dev, "URB already unlinked!, status %d\n", urb->status);
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 		return urb->status;
 	}
-
-	vdev = port_to_vdev(urb->dev->portnum-1);
 
 	/* refuse enqueue for dead connection */
 	spin_lock(&vdev->ud.lock);
···
 	    vdev->ud.status == VDEV_ST_ERROR) {
 		dev_err(dev, "enqueue for inactive port %d\n", vdev->rhport);
 		spin_unlock(&vdev->ud.lock);
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 		return -ENODEV;
 	}
 	spin_unlock(&vdev->ud.lock);
···
 
 out:
 	vhci_tx_urb(urb);
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 
 	return 0;
 
 no_need_xmit:
 	usb_hcd_unlink_urb_from_ep(hcd, urb);
 no_need_unlink:
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 	if (!ret)
-		usb_hcd_giveback_urb(vhci_to_hcd(the_controller),
-				     urb, urb->status);
+		usb_hcd_giveback_urb(hcd, urb, urb->status);
 	return ret;
 }
 
···
  */
 static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 {
+	struct vhci_hcd *vhci = hcd_to_vhci(hcd);
 	struct vhci_priv *priv;
 	struct vhci_device *vdev;
 	unsigned long flags;
 
 	pr_info("dequeue a urb %p\n", urb);
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
 
 	priv = urb->hcpriv;
 	if (!priv) {
 		/* URB was never linked! or will be soon given back by
 		 * vhci_rx. */
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 		return -EIDRM;
 	}
 
···
 
 		ret = usb_hcd_check_unlink_urb(hcd, urb, status);
 		if (ret) {
-			spin_unlock_irqrestore(&the_controller->lock, flags);
+			spin_unlock_irqrestore(&vhci->lock, flags);
 			return ret;
 		}
 	}
···
 
 		usb_hcd_unlink_urb_from_ep(hcd, urb);
 
-		spin_unlock_irqrestore(&the_controller->lock, flags);
-		usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb,
-				     urb->status);
-		spin_lock_irqsave(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
+		usb_hcd_giveback_urb(vhci_to_hcd(vhci), urb, urb->status);
+		spin_lock_irqsave(&vhci->lock, flags);
 
 	} else {
 		/* tcp connection is alive */
···
 		unlink = kzalloc(sizeof(struct vhci_unlink), GFP_ATOMIC);
 		if (!unlink) {
 			spin_unlock(&vdev->priv_lock);
-			spin_unlock_irqrestore(&the_controller->lock, flags);
+			spin_unlock_irqrestore(&vhci->lock, flags);
 			usbip_event_add(&vdev->ud, VDEV_EVENT_ERROR_MALLOC);
 			return -ENOMEM;
 		}
 
-		unlink->seqnum = atomic_inc_return(&the_controller->seqnum);
+		unlink->seqnum = atomic_inc_return(&vhci->seqnum);
 		if (unlink->seqnum == 0xffff)
 			pr_info("seqnum max\n");
 
···
 		spin_unlock(&vdev->priv_lock);
 	}
 
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 
 	usbip_dbg_vhci_hc("leave\n");
 	return 0;
···
 
 static void vhci_device_unlink_cleanup(struct vhci_device *vdev)
 {
+	struct vhci_hcd *vhci = vdev_to_vhci(vdev);
+	struct usb_hcd *hcd = vhci_to_hcd(vhci);
 	struct vhci_unlink *unlink, *tmp;
 	unsigned long flags;
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
 	spin_lock(&vdev->priv_lock);
 
 	list_for_each_entry_safe(unlink, tmp, &vdev->unlink_tx, list) {
···
 
 		urb->status = -ENODEV;
 
-		usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb);
+		usb_hcd_unlink_urb_from_ep(hcd, urb);
 
 		list_del(&unlink->list);
 
 		spin_unlock(&vdev->priv_lock);
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 
-		usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb,
-				     urb->status);
+		usb_hcd_giveback_urb(hcd, urb, urb->status);
 
-		spin_lock_irqsave(&the_controller->lock, flags);
+		spin_lock_irqsave(&vhci->lock, flags);
 		spin_lock(&vdev->priv_lock);
 
 		kfree(unlink);
 	}
 
 	spin_unlock(&vdev->priv_lock);
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 }
 
 /*
···
 	 * is actually given back by vhci_rx after receiving its return pdu.
 	 *
 	 */
-	rh_port_disconnect(vdev->rhport);
+	rh_port_disconnect(vdev);
 
 	pr_info("disconnect device\n");
 }
···
 
 static void vhci_device_init(struct vhci_device *vdev)
 {
-	memset(vdev, 0, sizeof(*vdev));
+	memset(vdev, 0, sizeof(struct vhci_device));
 
 	vdev->ud.side   = USBIP_VHCI;
 	vdev->ud.status = VDEV_ST_NULL;
···
 	usbip_start_eh(&vdev->ud);
 }
 
+static int hcd_name_to_id(const char *name)
+{
+	char *c;
+	long val;
+	int ret;
+
+	c = strchr(name, '.');
+	if (c == NULL)
+		return 0;
+
+	ret = kstrtol(c+1, 10, &val);
+	if (ret < 0)
+		return ret;
+
+	return val;
+}
+
 static int vhci_start(struct usb_hcd *hcd)
 {
 	struct vhci_hcd *vhci = hcd_to_vhci(hcd);
-	int rhport;
+	int id, rhport;
 	int err = 0;
 
 	usbip_dbg_vhci_hc("enter vhci_start\n");
 
 	/* initialize private data of usb_hcd */
 
-	for (rhport = 0; rhport < VHCI_NPORTS; rhport++) {
+	for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) {
 		struct vhci_device *vdev = &vhci->vdev[rhport];
 
 		vhci_device_init(vdev);
···
 	hcd->power_budget = 0; /* no limit */
 	hcd->uses_new_polling = 1;
 
+	id = hcd_name_to_id(hcd_name(hcd));
+	if (id < 0) {
+		pr_err("invalid vhci name %s\n", hcd_name(hcd));
+		return -EINVAL;
+	}
+
 	/* vhci_hcd is now ready to be controlled through sysfs */
-	err = sysfs_create_group(&vhci_dev(vhci)->kobj, &dev_attr_group);
-	if (err) {
-		pr_err("create sysfs files\n");
-		return err;
+	if (id == 0) {
+		err = vhci_init_attr_group();
+		if (err) {
+			pr_err("init attr group\n");
+			return err;
+		}
+		err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
+		if (err) {
+			pr_err("create sysfs files\n");
+			vhci_finish_attr_group();
+			return err;
+		}
+		pr_info("created sysfs %s\n", hcd_name(hcd));
 	}
 
 	return 0;
···
 static void vhci_stop(struct usb_hcd *hcd)
 {
 	struct vhci_hcd *vhci = hcd_to_vhci(hcd);
-	int rhport = 0;
+	int id, rhport;
 
 	usbip_dbg_vhci_hc("stop VHCI controller\n");
 
 	/* 1. remove the userland interface of vhci_hcd */
-	sysfs_remove_group(&vhci_dev(vhci)->kobj, &dev_attr_group);
+	id = hcd_name_to_id(hcd_name(hcd));
+	if (id == 0) {
+		sysfs_remove_group(&hcd_dev(hcd)->kobj, &vhci_attr_group);
+		vhci_finish_attr_group();
+	}
 
 	/* 2. shutdown all the ports of vhci_hcd */
-	for (rhport = 0; rhport < VHCI_NPORTS; rhport++) {
+	for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) {
 		struct vhci_device *vdev = &vhci->vdev[rhport];
 
 		usbip_event_add(&vdev->ud, VDEV_EVENT_REMOVED);
···
 	}
 	hcd->has_tt = 1;
 
-	/* this is private data for vhci_hcd */
-	the_controller = hcd_to_vhci(hcd);
-
 	/*
 	 * Finish generic HCD structure initialization and register.
 	 * Call the driver's reset() and start() routines.
···
 	if (ret != 0) {
 		pr_err("usb_add_hcd failed %d\n", ret);
 		usb_put_hcd(hcd);
-		the_controller = NULL;
 		return ret;
 	}
 
···
 	 */
 	usb_remove_hcd(hcd);
 	usb_put_hcd(hcd);
-	the_controller = NULL;
 
 	return 0;
 }
···
 static int vhci_hcd_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	struct usb_hcd *hcd;
-	int rhport = 0;
+	struct vhci_hcd *vhci;
+	int rhport;
 	int connected = 0;
 	int ret = 0;
 	unsigned long flags;
 
 	hcd = platform_get_drvdata(pdev);
+	if (!hcd)
+		return 0;
+	vhci = hcd_to_vhci(hcd);
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
 
-	for (rhport = 0; rhport < VHCI_NPORTS; rhport++)
-		if (the_controller->port_status[rhport] &
-		    USB_PORT_STAT_CONNECTION)
+	for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++)
+		if (vhci->port_status[rhport] & USB_PORT_STAT_CONNECTION)
 			connected += 1;
 
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 
 	if (connected > 0) {
 		dev_info(&pdev->dev,
···
 	dev_dbg(&pdev->dev, "%s\n", __func__);
 
 	hcd = platform_get_drvdata(pdev);
+	if (!hcd)
+		return 0;
 	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
 	usb_hcd_poll_rh_status(hcd);
 
···
 	},
 };
 
-/*
- * The VHCI 'device' is 'virtual'; not a real plug&play hardware.
- * We need to add this virtual device as a platform device arbitrarily:
- *	1. platform_device_register()
- */
-static void the_pdev_release(struct device *dev)
+static int add_platform_device(int id)
 {
+	struct platform_device *pdev;
+	int dev_nr;
+
+	if (id == 0)
+		dev_nr = -1;
+	else
+		dev_nr = id;
+
+	pdev = platform_device_register_simple(driver_name, dev_nr, NULL, 0);
+	if (IS_ERR(pdev))
+		return PTR_ERR(pdev);
+
+	*(vhci_pdevs + id) = pdev;
+	return 0;
 }
 
-static struct platform_device the_pdev = {
-	/* should be the same name as driver_name */
-	.name = driver_name,
-	.id = -1,
-	.dev = {
-		.release = the_pdev_release,
-	},
-};
+static void del_platform_devices(void)
+{
+	struct platform_device *pdev;
+	int i;
+
+	for (i = 0; i < vhci_num_controllers; i++) {
+		pdev = *(vhci_pdevs + i);
+		if (pdev != NULL)
+			platform_device_unregister(pdev);
+		*(vhci_pdevs + i) = NULL;
+	}
+	sysfs_remove_link(&platform_bus.kobj, driver_name);
+}
 
 static int __init vhci_hcd_init(void)
 {
-	int ret;
+	int i, ret;
 
 	if (usb_disabled())
 		return -ENODEV;
+
+	if (vhci_num_controllers < 1)
+		vhci_num_controllers = 1;
+
+	vhci_pdevs = kcalloc(vhci_num_controllers, sizeof(void *), GFP_KERNEL);
+	if (vhci_pdevs == NULL)
+		return -ENOMEM;
 
 	ret = platform_driver_register(&vhci_driver);
 	if (ret)
 		goto err_driver_register;
 
-	ret = platform_device_register(&the_pdev);
-	if (ret)
-		goto err_platform_device_register;
+	for (i = 0; i < vhci_num_controllers; i++) {
+		ret = add_platform_device(i);
+		if (ret)
+			goto err_platform_device_register;
+	}
 
 	pr_info(DRIVER_DESC " v" USBIP_VERSION "\n");
 	return ret;
 
 err_platform_device_register:
+	del_platform_devices();
 	platform_driver_unregister(&vhci_driver);
 err_driver_register:
+	kfree(vhci_pdevs);
 	return ret;
 }
 
 static void __exit vhci_hcd_exit(void)
 {
-	platform_device_unregister(&the_pdev);
+	del_platform_devices();
 	platform_driver_unregister(&vhci_driver);
+	kfree(vhci_pdevs);
 }
 
 module_init(vhci_hcd_init);

drivers/usb/usbip/vhci_rx.c

···
 static void vhci_recv_ret_submit(struct vhci_device *vdev,
 				 struct usbip_header *pdu)
 {
+	struct vhci_hcd *vhci = vdev_to_vhci(vdev);
 	struct usbip_device *ud = &vdev->ud;
 	struct urb *urb;
 	unsigned long flags;
···
 	if (!urb) {
 		pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum);
 		pr_info("max seqnum %d\n",
-			atomic_read(&the_controller->seqnum));
+			atomic_read(&vhci->seqnum));
 		usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
 		return;
 	}
···
 
 	usbip_dbg_vhci_rx("now giveback urb %p\n", urb);
 
-	spin_lock_irqsave(&the_controller->lock, flags);
-	usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb);
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_lock_irqsave(&vhci->lock, flags);
+	usb_hcd_unlink_urb_from_ep(vhci_to_hcd(vhci), urb);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 
-	usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, urb->status);
+	usb_hcd_giveback_urb(vhci_to_hcd(vhci), urb, urb->status);
 
 	usbip_dbg_vhci_rx("Leave\n");
 }
···
 static void vhci_recv_ret_unlink(struct vhci_device *vdev,
 				 struct usbip_header *pdu)
 {
+	struct vhci_hcd *vhci = vdev_to_vhci(vdev);
 	struct vhci_unlink *unlink;
 	struct urb *urb;
 	unsigned long flags;
···
 		urb->status = pdu->u.ret_unlink.status;
 		pr_info("urb->status %d\n", urb->status);
 
-		spin_lock_irqsave(&the_controller->lock, flags);
-		usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb);
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_lock_irqsave(&vhci->lock, flags);
+		usb_hcd_unlink_urb_from_ep(vhci_to_hcd(vhci), urb);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 
-		usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb,
-				     urb->status);
+		usb_hcd_giveback_urb(vhci_to_hcd(vhci), urb, urb->status);
 	}
 
 	kfree(unlink);

drivers/usb/usbip/vhci_sysfs.c

···
 /*
  * Copyright (C) 2003-2008 Takahiro Hirofuchi
+ * Copyright (C) 2015-2016 Nobuo Iwata
  *
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
···
 #include <linux/kthread.h>
 #include <linux/file.h>
 #include <linux/net.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include "usbip_common.h"
 #include "vhci.h"
···
 /* TODO: refine locking ?*/
 
 /* Sysfs entry to show port status */
-static ssize_t status_show(struct device *dev, struct device_attribute *attr,
-			   char *out)
+static ssize_t status_show_vhci(int pdev_nr, char *out)
 {
+	struct platform_device *pdev = *(vhci_pdevs + pdev_nr);
+	struct vhci_hcd *vhci;
 	char *s = out;
 	int i = 0;
 	unsigned long flags;
 
-	BUG_ON(!the_controller || !out);
+	if (!pdev || !out) {
+		usbip_dbg_vhci_sysfs("show status error\n");
+		return 0;
+	}
 
-	spin_lock_irqsave(&the_controller->lock, flags);
+	vhci = hcd_to_vhci(platform_get_drvdata(pdev));
+
+	spin_lock_irqsave(&vhci->lock, flags);
 
 	/*
 	 * output example:
-	 * prt sta spd dev socket           local_busid
-	 * 000 004 000 000         c5a7bb80 1-2.3
-	 * 001 004 000 000         d8cee980 2-3.4
+	 * port sta spd dev      socket           local_busid
+	 * 0000 004 000 00000000         c5a7bb80 1-2.3
+	 * 0001 004 000 00000000         d8cee980 2-3.4
 	 *
 	 * IP address can be retrieved from a socket pointer address by looking
 	 * up /proc/net/{tcp,tcp6}. Also, a userland program may remember a
 	 * port number and its peer IP address.
 	 */
-	out += sprintf(out,
-		       "prt sta spd bus dev socket           local_busid\n");
-
-	for (i = 0; i < VHCI_NPORTS; i++) {
-		struct vhci_device *vdev = port_to_vdev(i);
+	for (i = 0; i < VHCI_HC_PORTS; i++) {
+		struct vhci_device *vdev = &vhci->vdev[i];
 
 		spin_lock(&vdev->ud.lock);
-		out += sprintf(out, "%03u %03u ", i, vdev->ud.status);
+		out += sprintf(out, "%04u %03u ",
+				    (pdev_nr * VHCI_HC_PORTS) + i,
+				    vdev->ud.status);
 
 		if (vdev->ud.status == VDEV_ST_USED) {
 			out += sprintf(out, "%03u %08x ",
-				       vdev->speed, vdev->devid);
-			out += sprintf(out, "%16p ", vdev->ud.tcp_socket);
-			out += sprintf(out, "%s", dev_name(&vdev->udev->dev));
+					    vdev->speed, vdev->devid);
+			out += sprintf(out, "%16p %s",
+					    vdev->ud.tcp_socket,
+					    dev_name(&vdev->udev->dev));
 
 		} else {
-			out += sprintf(out, "000 000 000 0000000000000000 0-0");
+			out += sprintf(out, "000 00000000 ");
+			out += sprintf(out, "0000000000000000 0-0");
 		}
 
 		out += sprintf(out, "\n");
 		spin_unlock(&vdev->ud.lock);
 	}
 
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 
 	return out - s;
 }
-static DEVICE_ATTR_RO(status);
+
+static ssize_t status_show_not_ready(int pdev_nr, char *out)
+{
+	char *s = out;
+	int i = 0;
+
+	for (i = 0; i < VHCI_HC_PORTS; i++) {
+		out += sprintf(out, "%04u %03u ",
+				    (pdev_nr * VHCI_HC_PORTS) + i,
+				    VDEV_ST_NOTASSIGNED);
+		out += sprintf(out, "000 00000000 0000000000000000 0-0");
+		out += sprintf(out, "\n");
+	}
+	return out - s;
+}
+
+static int status_name_to_id(const char *name)
+{
+	char *c;
+	long val;
+	int ret;
+
+	c = strchr(name, '.');
+	if (c == NULL)
+		return 0;
+
+	ret = kstrtol(c+1, 10, &val);
+	if (ret < 0)
+		return ret;
+
+	return val;
+}
+
+static ssize_t status_show(struct device *dev,
+			   struct device_attribute *attr, char *out)
+{
+	char *s = out;
+	int pdev_nr;
+
+	out += sprintf(out,
+		       "port sta spd dev      socket           local_busid\n");
+
+	pdev_nr = status_name_to_id(attr->attr.name);
+	if (pdev_nr < 0)
+		out += status_show_not_ready(pdev_nr, out);
+	else
+		out += status_show_vhci(pdev_nr, out);
+
+	return out - s;
+}
+
+static ssize_t nports_show(struct device *dev, struct device_attribute *attr,
+			   char *out)
+{
+	char *s = out;
+
+	out += sprintf(out, "%d\n", VHCI_HC_PORTS * vhci_num_controllers);
+	return out - s;
+}
+static DEVICE_ATTR_RO(nports);
 
 /* Sysfs entry to shutdown a virtual connection */
-static int vhci_port_disconnect(__u32 rhport)
+static int vhci_port_disconnect(struct vhci_hcd *vhci, __u32 rhport)
 {
-	struct vhci_device *vdev;
+	struct vhci_device *vdev = &vhci->vdev[rhport];
 	unsigned long flags;
 
 	usbip_dbg_vhci_sysfs("enter\n");
 
 	/* lock */
-	spin_lock_irqsave(&the_controller->lock, flags);
-
-	vdev = port_to_vdev(rhport);
-
+	spin_lock_irqsave(&vhci->lock, flags);
 	spin_lock(&vdev->ud.lock);
+
 	if (vdev->ud.status == VDEV_ST_NULL) {
 		pr_err("not connected %d\n", vdev->ud.status);
 
 		/* unlock */
 		spin_unlock(&vdev->ud.lock);
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 
 		return -EINVAL;
 	}
 
 	/* unlock */
 	spin_unlock(&vdev->ud.lock);
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 
 	usbip_event_add(&vdev->ud, VDEV_EVENT_DOWN);
 
 	return 0;
 }
 
+static int valid_port(__u32 pdev_nr, __u32 rhport)
+{
+	if (pdev_nr >= vhci_num_controllers) {
+		pr_err("pdev %u\n", pdev_nr);
+		return 0;
+	}
+	if (rhport >= VHCI_HC_PORTS) {
+		pr_err("rhport %u\n", rhport);
+		return 0;
+	}
+	return 1;
+}
+
 static ssize_t store_detach(struct device *dev, struct device_attribute *attr,
 			    const char *buf, size_t count)
 {
-	int err;
-	__u32 rhport = 0;
+	__u32 port = 0, pdev_nr = 0, rhport = 0;
+	struct usb_hcd *hcd;
+	int ret;
 
-	if (sscanf(buf, "%u", &rhport) != 1)
+	if (kstrtoint(buf, 10, &port) < 0)
 		return -EINVAL;
 
-	/* check rhport */
-	if (rhport >= VHCI_NPORTS) {
-		dev_err(dev, "invalid port %u\n", rhport);
+	pdev_nr = port_to_pdev_nr(port);
+	rhport = port_to_rhport(port);
+
+	if (!valid_port(pdev_nr, rhport))
 		return -EINVAL;
+
+	hcd = platform_get_drvdata(*(vhci_pdevs + pdev_nr));
+	if (hcd == NULL) {
+		dev_err(dev, "port is not ready %u\n", port);
+		return -EAGAIN;
 	}
 
-	err = vhci_port_disconnect(rhport);
-	if (err < 0)
+	ret = vhci_port_disconnect(hcd_to_vhci(hcd), rhport);
+	if (ret < 0)
 		return -EINVAL;
 
 	usbip_dbg_vhci_sysfs("Leave\n");
···
 }
 static DEVICE_ATTR(detach, S_IWUSR, NULL, store_detach);
 
-/* Sysfs entry to establish a virtual connection */
-static int valid_args(__u32 rhport, enum usb_device_speed speed)
+static int valid_args(__u32 pdev_nr, __u32 rhport, enum usb_device_speed speed)
 {
-	/* check rhport */
-	if (rhport >= VHCI_NPORTS) {
-		pr_err("port %u\n", rhport);
-		return -EINVAL;
+	if (!valid_port(pdev_nr, rhport)) {
+		return 0;
 	}
 
-	/* check speed */
 	switch (speed) {
 	case USB_SPEED_LOW:
 	case USB_SPEED_FULL:
···
 	default:
 		pr_err("Failed attach request for unsupported USB speed: %s\n",
 			usb_speed_string(speed));
-		return -EINVAL;
+		return 0;
 	}
 
-	return 0;
+	return 1;
 }
 
+/* Sysfs entry to establish a virtual connection */
 /*
  * To start a new USB/IP attachment, a userland program needs to setup a TCP
  * connection and then write its socket descriptor with remote device
···
 static ssize_t store_attach(struct device *dev, struct device_attribute *attr,
 			    const char *buf, size_t count)
 {
-	struct vhci_device *vdev;
 	struct socket *socket;
 	int sockfd = 0;
-	__u32 rhport = 0, devid = 0, speed = 0;
+	__u32 port = 0, pdev_nr = 0, rhport = 0, devid = 0, speed = 0;
+	struct usb_hcd *hcd;
+	struct vhci_hcd *vhci;
+	struct vhci_device *vdev;
 	int err;
 	unsigned long flags;
 
···
 	 * @devid: unique device identifier in a remote host
 	 * @speed: usb device speed in a remote host
 	 */
-	if (sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed) != 4)
+	if (sscanf(buf, "%u %u %u %u", &port, &sockfd, &devid, &speed) != 4)
 		return -EINVAL;
+	pdev_nr = port_to_pdev_nr(port);
+	rhport = port_to_rhport(port);
 
-	usbip_dbg_vhci_sysfs("rhport(%u) sockfd(%u) devid(%u) speed(%u)\n",
-			     rhport, sockfd, devid, speed);
+	usbip_dbg_vhci_sysfs("port(%u) pdev(%d) rhport(%u)\n",
+			     port, pdev_nr, rhport);
+	usbip_dbg_vhci_sysfs("sockfd(%u) devid(%u) speed(%u)\n",
+			     sockfd, devid, speed);
 
 	/* check received parameters */
-	if (valid_args(rhport, speed) < 0)
+	if (!valid_args(pdev_nr, rhport, speed))
 		return -EINVAL;
+
+	hcd = platform_get_drvdata(*(vhci_pdevs + pdev_nr));
+	if (hcd == NULL) {
+		dev_err(dev, "port %d is not ready\n", port);
+		return -EAGAIN;
+	}
+	vhci = hcd_to_vhci(hcd);
+	vdev = &vhci->vdev[rhport];
 
 	/* Extract socket from fd. */
 	socket = sockfd_lookup(sockfd, &err);
···
 	/* now need lock until setting vdev status as used */
 
 	/* begin a lock */
-	spin_lock_irqsave(&the_controller->lock, flags);
-	vdev = port_to_vdev(rhport);
+	spin_lock_irqsave(&vhci->lock, flags);
 	spin_lock(&vdev->ud.lock);
 
 	if (vdev->ud.status != VDEV_ST_NULL) {
 		/* end of the lock */
 		spin_unlock(&vdev->ud.lock);
-		spin_unlock_irqrestore(&the_controller->lock, flags);
+		spin_unlock_irqrestore(&vhci->lock, flags);
 
 		sockfd_put(socket);
 
···
 		return -EINVAL;
 	}
 
-	dev_info(dev,
-		 "rhport(%u) sockfd(%d) devid(%u) speed(%u) speed_str(%s)\n",
-		 rhport, sockfd, devid, speed, usb_speed_string(speed));
+	dev_info(dev, "pdev(%u) rhport(%u) sockfd(%d)\n",
+		 pdev_nr, rhport, sockfd);
+	dev_info(dev, "devid(%u) speed(%u) speed_str(%s)\n",
+		 devid, speed, usb_speed_string(speed));
 
 	vdev->devid         = devid;
 	vdev->speed         = speed;
···
 	vdev->ud.status     = VDEV_ST_NOTASSIGNED;
 
 	spin_unlock(&vdev->ud.lock);
-	spin_unlock_irqrestore(&the_controller->lock, flags);
+	spin_unlock_irqrestore(&vhci->lock, flags);
 	/* end the lock */
 
 	vdev->ud.tcp_rx = kthread_get_run(vhci_rx_loop, &vdev->ud, "vhci_rx");
 	vdev->ud.tcp_tx = kthread_get_run(vhci_tx_loop, &vdev->ud, "vhci_tx");
 
-	rh_port_connect(rhport, speed);
+	rh_port_connect(vdev, speed);
 
 	return count;
 }
 static DEVICE_ATTR(attach, S_IWUSR, NULL, store_attach);
 
-static struct attribute *dev_attrs[] = {
-	&dev_attr_status.attr,
-	&dev_attr_detach.attr,
-	&dev_attr_attach.attr,
-	&dev_attr_usbip_debug.attr,
-	NULL,
+#define MAX_STATUS_NAME 16
+
+struct status_attr {
+	struct device_attribute attr;
+	char name[MAX_STATUS_NAME+1];
 };
 
-const struct attribute_group dev_attr_group = {
-	.attrs = dev_attrs,
+static struct status_attr *status_attrs;
+
+static void set_status_attr(int id)
+{
+	struct status_attr *status;
+
+	status = status_attrs + id;
+	if (id == 0)
+		strcpy(status->name, "status");
+	else
+		snprintf(status->name, MAX_STATUS_NAME+1, "status.%d", id);
+	status->attr.attr.name = status->name;
+	status->attr.attr.mode = S_IRUGO;
+	status->attr.show = status_show;
+}
+
+static int init_status_attrs(void)
+{
+	int id;
+
+	status_attrs = kcalloc(vhci_num_controllers, sizeof(struct status_attr),
+			       GFP_KERNEL);
+	if (status_attrs == NULL)
+		return -ENOMEM;
+
+	for (id = 0; id < vhci_num_controllers; id++)
+		set_status_attr(id);
+
+	return 0;
+}
+
+static void finish_status_attrs(void)
+{
+	kfree(status_attrs);
+}
+
+struct attribute_group vhci_attr_group = {
+	.attrs = NULL,
 };
+
+int vhci_init_attr_group(void)
+{
+	struct attribute **attrs;
+	int ret, i;
+
+	attrs = kcalloc((vhci_num_controllers + 5), sizeof(struct attribute *),
+			GFP_KERNEL);
+	if (attrs == NULL)
+		return -ENOMEM;
+
+	ret = init_status_attrs();
+	if (ret) {
+		kfree(attrs);
+		return ret;
+	}
+	*attrs = &dev_attr_nports.attr;
+	*(attrs + 1) = &dev_attr_detach.attr;
+	*(attrs + 2) = &dev_attr_attach.attr;
+	*(attrs + 3) = &dev_attr_usbip_debug.attr;
+	for (i = 0; i < vhci_num_controllers; i++)
+		*(attrs + i + 4) = &((status_attrs + i)->attr.attr);
+	vhci_attr_group.attrs = attrs;
+	return 0;
+}
+
+void vhci_finish_attr_group(void)
+{
+	finish_status_attrs();
+	kfree(vhci_attr_group.attrs);
+}

drivers/usb/usbip/vudc_dev.c

···
 	if (ud->tcp_socket)
 		kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR);
 
-	if (ud->tcp_tx) {
+	if (ud->tcp_rx) {
 		kthread_stop_put(ud->tcp_rx);
 		ud->tcp_rx = NULL;
 	}

drivers/usb/usbip/vudc_rx.c

···
 	urb_p->urb->status = -EINPROGRESS;
 
 	/* FIXME: more pipe setup to please usbip_common */
-	urb_p->urb->pipe &= ~(11 << 30);
+	urb_p->urb->pipe &= ~(3 << 30);
 	switch (urb_p->ep->type) {
 	case USB_ENDPOINT_XFER_BULK:
 		urb_p->urb->pipe |= (PIPE_BULK << 30);

drivers/usb/wusbcore/cbaf.c

···
 	cbaf->usb_iface = usb_get_intf(iface);
 	result = cbaf_check(cbaf);
 	if (result < 0) {
-		dev_err(dev, "This device is not WUSB-CBAF compliant"
-			"and is not supported yet.\n");
+		dev_err(dev, "This device is not WUSB-CBAF compliant and is not supported yet.\n");
 		goto error_check;
 	}
 

drivers/usb/wusbcore/crypto.c

···
 		zero_padding = sizeof(struct aes_ccm_block) - zero_padding;
 	dst_size = blen + sizeof(b0) + sizeof(b1) + zero_padding;
 	dst_buf = kzalloc(dst_size, GFP_KERNEL);
-	if (dst_buf == NULL) {
-		printk(KERN_ERR "E: can't alloc destination buffer\n");
+	if (!dst_buf)
 		goto error_dst_buf;
-	}
 
 	memset(iv, 0, sizeof(iv));
 

drivers/usb/wusbcore/security.c

···
 	struct wusb_keydvt_out keydvt_out;
 
 	hs = kcalloc(3, sizeof(hs[0]), GFP_KERNEL);
-	if (hs == NULL) {
-		dev_err(dev, "can't allocate handshake data\n");
+	if (!hs)
 		goto error_kzalloc;
-	}
 
 	/* We need to turn encryption before beginning the 4way
 	 * hshake (WUSB1.0[.3.2.2]) */

drivers/usb/wusbcore/wa-nep.c

···
 	epd = &iface->cur_altsetting->endpoint[0].desc;
 	wa->nep_buffer_size = 1024;
 	wa->nep_buffer = kmalloc(wa->nep_buffer_size, GFP_KERNEL);
-	if (wa->nep_buffer == NULL) {
-		dev_err(dev,
-			"Unable to allocate notification's read buffer\n");
+	if (!wa->nep_buffer)
 		goto error_nep_buffer;
-	}
 	wa->nep_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (wa->nep_urb == NULL) {
-		dev_err(dev, "Unable to allocate notification URB\n");
+	if (wa->nep_urb == NULL)
 		goto error_urb_alloc;
-	}
 	usb_fill_int_urb(wa->nep_urb, usb_dev,
 			 usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
 			 wa->nep_buffer, wa->nep_buffer_size,

drivers/usb/wusbcore/wa-xfer.c

···
 		goto out;
 
 	wa->dti_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (wa->dti_urb == NULL) {
-		dev_err(dev, "Can't allocate DTI URB\n");
+	if (wa->dti_urb == NULL)
 		goto error_dti_urb_alloc;
-	}
 	usb_fill_bulk_urb(
 		wa->dti_urb, wa->usb_dev,
 		usb_rcvbulkpipe(wa->usb_dev, 0x80 | dti_epd->bEndpointAddress),

drivers/uwb/hwa-rc.c

···
 		goto error_rd_buffer;
 	}
 	hwarc->neep_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (hwarc->neep_urb == NULL) {
-		dev_err(dev, "Unable to allocate notification URB\n");
+	if (hwarc->neep_urb == NULL)
 		goto error_urb_alloc;
-	}
 	usb_fill_int_urb(hwarc->neep_urb, usb_dev,
 			 usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
 			 hwarc->rd_buffer, PAGE_SIZE,

drivers/watchdog/pcwd_usb.c

···
 
 	/* allocate the urb's */
 	usb_pcwd->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!usb_pcwd->intr_urb) {
-		pr_err("Out of memory\n");
+	if (!usb_pcwd->intr_urb)
 		goto error;
-	}
 
 	/* initialise the intr urb's */
 	usb_fill_int_urb(usb_pcwd->intr_urb, udev, pipe,

include/linux/bcma/bcma_regs.h

···
 #define  BCMA_CLKCTLST_HAVEALPREQ	0x00000008 /* ALP available request */
 #define  BCMA_CLKCTLST_HAVEHTREQ	0x00000010 /* HT available request */
 #define  BCMA_CLKCTLST_HWCROFF		0x00000020 /* Force HW clock request off */
+#define  BCMA_CLKCTLST_HQCLKREQ		0x00000040 /* HQ Clock */
 #define  BCMA_CLKCTLST_EXTRESREQ	0x00000700 /* Mask of external resource requests */
 #define  BCMA_CLKCTLST_EXTRESREQ_SHIFT	8
 #define  BCMA_CLKCTLST_HAVEALP		0x00010000 /* ALP available */

include/linux/extcon.h

···
 #include <linux/device.h>
 
 /*
+ * Define the type of supported external connectors
+ */
+#define EXTCON_TYPE_USB		BIT(0)	/* USB connector */
+#define EXTCON_TYPE_CHG		BIT(1)	/* Charger connector */
+#define EXTCON_TYPE_JACK	BIT(2)	/* Jack connector */
+#define EXTCON_TYPE_DISP	BIT(3)	/* Display connector */
+#define EXTCON_TYPE_MISC	BIT(4)	/* Miscellaneous connector */
+
+/*
  * Define the unique id of supported external connectors
  */
 #define EXTCON_NONE		0
···
 #define EXTCON_CHG_USB_ACA	8	/* Accessory Charger Adapter */
 #define EXTCON_CHG_USB_FAST	9
 #define EXTCON_CHG_USB_SLOW	10
+#define EXTCON_CHG_WPT		11	/* Wireless Power Transfer */
 
 /* Jack external connector */
 #define EXTCON_JACK_MICROPHONE	20
···
 #define EXTCON_DISP_MHL		41	/* Mobile High-Definition Link */
 #define EXTCON_DISP_DVI		42	/* Digital Visual Interface */
 #define EXTCON_DISP_VGA		43	/* Video Graphics Array */
+#define EXTCON_DISP_DP		44	/* Display Port */
+#define EXTCON_DISP_HMD		45	/* Head-Mounted Display */
 
 /* Miscellaneous external connector */
 #define EXTCON_DOCK		60
···
 #define EXTCON_MECHANICAL	62
 
 #define EXTCON_NUM		63
+
+/*
+ * Define the property of supported external connectors.
+ *
+ * When adding the new extcon property, they *must* have
+ * the type/value/default information. Also, you *have to*
+ * modify the EXTCON_PROP_[type]_START/END definitions
+ * which mean the range of the supported properties
+ * for each extcon type.
+ *
+ * The naming style of property
+ * : EXTCON_PROP_[type]_[property name]
+ *
+ * EXTCON_PROP_USB_[property name]	: USB property
+ * EXTCON_PROP_CHG_[property name]	: Charger property
+ * EXTCON_PROP_JACK_[property name]	: Jack property
+ * EXTCON_PROP_DISP_[property name]	: Display property
+ */
+
+/*
+ * Properties of EXTCON_TYPE_USB.
+ *
+ * - EXTCON_PROP_USB_VBUS
+ * @type:	integer (intval)
+ * @value:	0 (low) or 1 (high)
+ * @default:	0 (low)
+ * - EXTCON_PROP_USB_TYPEC_POLARITY
+ * @type:	integer (intval)
+ * @value:	0 (normal) or 1 (flip)
+ * @default:	0 (normal)
+ * - EXTCON_PROP_USB_SS (SuperSpeed)
+ * @type:       integer (intval)
+ * @value:      0 (USB/USB2) or 1 (USB3)
+ * @default:    0 (USB/USB2)
+ *
+ */
+#define EXTCON_PROP_USB_VBUS		0
+#define EXTCON_PROP_USB_TYPEC_POLARITY	1
+#define EXTCON_PROP_USB_SS		2
+
+#define EXTCON_PROP_USB_MIN		0
+#define EXTCON_PROP_USB_MAX		2
+#define EXTCON_PROP_USB_CNT	(EXTCON_PROP_USB_MAX - EXTCON_PROP_USB_MIN + 1)
+
+/* Properties of EXTCON_TYPE_CHG. */
+#define EXTCON_PROP_CHG_MIN		50
+#define EXTCON_PROP_CHG_MAX		50
+#define EXTCON_PROP_CHG_CNT	(EXTCON_PROP_CHG_MAX - EXTCON_PROP_CHG_MIN + 1)
+
+/* Properties of EXTCON_TYPE_JACK. */
+#define EXTCON_PROP_JACK_MIN		100
+#define EXTCON_PROP_JACK_MAX		100
+#define EXTCON_PROP_JACK_CNT (EXTCON_PROP_JACK_MAX - EXTCON_PROP_JACK_MIN + 1)
+
+/*
+ * Properties of EXTCON_TYPE_DISP.
+ *
+ * - EXTCON_PROP_DISP_HPD (Hot Plug Detect)
+ * @type:       integer (intval)
+ * @value:      0 (no hpd) or 1 (hpd)
+ * @default:    0 (no hpd)
+ *
+ */
+#define EXTCON_PROP_DISP_HPD		150
+
+/* Properties of EXTCON_TYPE_DISP. */
+#define EXTCON_PROP_DISP_MIN		150
+#define EXTCON_PROP_DISP_MAX		151
+#define EXTCON_PROP_DISP_CNT (EXTCON_PROP_DISP_MAX - EXTCON_PROP_DISP_MIN + 1)
+
+/*
+ * Define the type of property's value.
+ *
+ * Define the property's value as union type. Because each property
+ * would need the different data type to store it.
+ */
+union extcon_property_value {
+	int intval;	/* type : integer (intval) */
+};
 
 struct extcon_cable;
 
···
 extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);
 
 /*
- * get/set/update_state access the 32b encoded state value, which represents
- * states of all possible cables of the multistate port. For example, if one
- * calls extcon_set_state(edev, 0x7), it may mean that all the three cables
- * are attached to the port.
- */
-static inline u32 extcon_get_state(struct extcon_dev *edev)
-{
-	return edev->state;
-}
-
-extern int extcon_set_state(struct extcon_dev *edev, u32 state);
-extern int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state);
-
-/*
- * get/set_cable_state access each bit of the 32b encoded state value.
+ * get/set_state access each bit of the 32b encoded state value.
  * They are used to access the status of each cable based on the cable id.
  */
-extern int extcon_get_cable_state_(struct extcon_dev *edev, unsigned int id);
-extern int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id,
+extern int extcon_get_state(struct extcon_dev *edev, unsigned int id);
+extern int extcon_set_state(struct extcon_dev *edev, unsigned int id,
 				   bool cable_state);
+extern int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
+				bool cable_state);
+/*
+ * Synchronize the state and property data for a specific external connector.
+ */
+extern int extcon_sync(struct extcon_dev *edev, unsigned int id);
+
+/*
+ * get/set_property access the property value of each external connector.
+ * They are used to access the property of each cable based on the property id.
+ */
+extern int extcon_get_property(struct extcon_dev *edev, unsigned int id,
+				unsigned int prop,
+				union extcon_property_value *prop_val);
+extern int extcon_set_property(struct extcon_dev *edev, unsigned int id,
+				unsigned int prop,
+				union extcon_property_value prop_val);
+extern int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
+				unsigned int prop,
+				union extcon_property_value prop_val);
+
+/*
+ * get/set_property_capability set the capability of the property for each
+ * external connector. They are used to set the capability of the property
+ * of each external connector based on the id and property.
+ */
+extern int extcon_get_property_capability(struct extcon_dev *edev,
+				unsigned int id, unsigned int prop);
+extern int extcon_set_property_capability(struct extcon_dev *edev,
+				unsigned int id, unsigned int prop);
 
 /*
  * Following APIs are to monitor every action of a notifier.
···
 
 static inline void devm_extcon_dev_free(struct extcon_dev *edev) { }
 
-static inline u32 extcon_get_state(struct extcon_dev *edev)
+
+static inline int extcon_get_state(struct extcon_dev *edev, unsigned int id)
 {
 	return 0;
 }
 
-static inline int extcon_set_state(struct extcon_dev *edev, u32 state)
+static inline int extcon_set_state(struct extcon_dev *edev, unsigned int id,
+				bool cable_state)
 {
 	return 0;
 }
 
-static inline int extcon_update_state(struct extcon_dev *edev, u32 mask,
-				       u32 state)
+static inline int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
+				bool cable_state)
 {
 	return 0;
 }
 
-static inline int extcon_get_cable_state_(struct extcon_dev *edev,
-					  unsigned int id)
+static inline int extcon_sync(struct extcon_dev *edev, unsigned int id)
 {
 	return 0;
 }
 
-static inline int extcon_set_cable_state_(struct extcon_dev *edev,
-					  unsigned int id, bool cable_state)
+static inline int extcon_get_property(struct extcon_dev *edev, unsigned int id,
+					unsigned int prop,
+					union extcon_property_value *prop_val)
+{
+	return 0;
+}
+static inline int extcon_set_property(struct extcon_dev *edev, unsigned int id,
+					unsigned int prop,
+					union extcon_property_value prop_val)
+{
+	return 0;
+}
+
+static inline int extcon_set_property_sync(struct extcon_dev *edev,
+					unsigned int id, unsigned int prop,
+					union extcon_property_value prop_val)
+{
+	return 0;
+}
+
+static inline int extcon_get_property_capability(struct extcon_dev *edev,
+					unsigned int id, unsigned int prop)
+{
+	return 0;
+}
+
+static inline int extcon_set_property_capability(struct extcon_dev *edev,
+					unsigned int id, unsigned int prop)
 {
 	return 0;
 }
···
 						    *obj)
 {
 	return -EINVAL;
+}
+
+static inline int extcon_get_cable_state_(struct extcon_dev *edev, unsigned int id)
+{
+	return extcon_get_state(edev, id);
+}
+
+static inline int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id,
+				   bool cable_state)
+{
+	return extcon_set_state_sync(edev, id, cable_state);
 }
 #endif /* __LINUX_EXTCON_H__ */

include/linux/extcon/extcon-adc-jack.h

···
 
 /**
  * struct adc_jack_cond - condition to use an extcon state
- * @state:		the corresponding extcon state (if 0, this struct
  *			denotes the last adc_jack_cond element among the array)
+ * @id:			the unique id of each external connector
  * @min_adc:		min adc value for this condition
  * @max_adc:		max adc value for this condition
  *
···
  * because when no adc_jack_cond is met, state = 0 is automatically chosen.
  */
 struct adc_jack_cond {
-	u32 state;	/* extcon state value. 0 if invalid */
+	unsigned int id;
 	u32 min_adc;
 	u32 max_adc;
 };

include/linux/phy/phy.h

···
  * @power_on: powering on the phy
  * @power_off: powering off the phy
  * @set_mode: set the mode of the phy
+ * @reset: resetting the phy
  * @owner: the module owner containing the ops
  */
 struct phy_ops {
···
 	int	(*power_on)(struct phy *phy);
 	int	(*power_off)(struct phy *phy);
 	int	(*set_mode)(struct phy *phy, enum phy_mode mode);
+	int	(*reset)(struct phy *phy);
 	struct module *owner;
 };
 
···
 int phy_power_on(struct phy *phy);
 int phy_power_off(struct phy *phy);
 int phy_set_mode(struct phy *phy, enum phy_mode mode);
+int phy_reset(struct phy *phy);
 static inline int phy_get_bus_width(struct phy *phy)
 {
 	return phy->attrs.bus_width;

include/linux/ulpi/driver.h

···
  */
 struct ulpi {
 	struct ulpi_device_id id;
-	struct ulpi_ops *ops;
+	const struct ulpi_ops *ops;
 	struct device dev;
 };
 
···
 
 #define to_ulpi_driver(d) container_of(d, struct ulpi_driver, driver)
 
-int ulpi_register_driver(struct ulpi_driver *drv);
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE
+ */
+#define ulpi_register_driver(drv) __ulpi_register_driver(drv, THIS_MODULE)
+int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module);
 void ulpi_unregister_driver(struct ulpi_driver *drv);
 
 #define module_ulpi_driver(__ulpi_driver) \

include/linux/ulpi/interface.h

···
 #include <linux/types.h>
 
 struct ulpi;
+struct device;
 
 /**
  * struct ulpi_ops - ULPI register access
- * @dev: the interface provider
  * @read: read operation for ULPI register access
  * @write: write operation for ULPI register access
  */
 struct ulpi_ops {
-	struct device *dev;
-	int (*read)(struct ulpi_ops *ops, u8 addr);
-	int (*write)(struct ulpi_ops *ops, u8 addr, u8 val);
+	int (*read)(struct device *dev, u8 addr);
+	int (*write)(struct device *dev, u8 addr, u8 val);
 };
 
-struct ulpi *ulpi_register_interface(struct device *, struct ulpi_ops *);
+struct ulpi *ulpi_register_interface(struct device *, const struct ulpi_ops *);
 void ulpi_unregister_interface(struct ulpi *);
 
 #endif /* __LINUX_ULPI_INTERFACE_H */

include/linux/usb/composite.h

···
 	int			(*setup)(struct usb_function *,
 					const struct usb_ctrlrequest *);
 	bool			(*req_match)(struct usb_function *,
-					const struct usb_ctrlrequest *);
+					const struct usb_ctrlrequest *,
+					bool config0);
 	void			(*suspend)(struct usb_function *);
 	void			(*resume)(struct usb_function *);
 

include/linux/usb/gadget.h

···
  *	or B-Peripheral wants to take host role.
  * @quirk_ep_out_aligned_size: epout requires buffer size to be aligned to
  *	MaxPacketSize.
+ * @quirk_avoids_skb_reserve: udc/platform wants to avoid skb_reserve() in
+ *	u_ether.c to improve performance.
  * @is_selfpowered: if the gadget is self-powered.
  * @deactivated: True if gadget is deactivated - in deactivated state it cannot
  *	be connected.
···
 	unsigned			quirk_altset_not_supp:1;
 	unsigned			quirk_stall_not_supp:1;
 	unsigned			quirk_zlp_not_supp:1;
+	unsigned			quirk_avoids_skb_reserve:1;
 	unsigned			is_selfpowered:1;
 	unsigned			deactivated:1;
 	unsigned			connected:1;
···
 	list_for_each_entry(tmp, &(gadget)->ep_list, ep_list)
 
 /**
+ * usb_ep_align - returns @len aligned to ep's maxpacketsize.
+ * @ep: the endpoint whose maxpacketsize is used to align @len
+ * @len: buffer size's length to align to @ep's maxpacketsize
+ *
+ * This helper is used to align buffer's size to an ep's maxpacketsize.
+ */
+static inline size_t usb_ep_align(struct usb_ep *ep, size_t len)
+{
+	return round_up(len, (size_t)le16_to_cpu(ep->desc->wMaxPacketSize));
+}
+
+/**
  * usb_ep_align_maybe - returns @len aligned to ep's maxpacketsize if gadget
- *	requires quirk_ep_out_aligned_size, otherwise reguens len.
+ *	requires quirk_ep_out_aligned_size, otherwise returns len.
  * @g: controller to check for quirk
  * @ep: the endpoint whose maxpacketsize is used to align @len
  * @len: buffer size's length to align to @ep's maxpacketsize
···
 static inline size_t
 usb_ep_align_maybe(struct usb_gadget *g, struct usb_ep *ep, size_t len)
 {
-	return !g->quirk_ep_out_aligned_size ? len :
-			round_up(len, (size_t)ep->desc->wMaxPacketSize);
+	return g->quirk_ep_out_aligned_size ? usb_ep_align(ep, len) : len;
 }
 
 /**
···
 static inline int gadget_is_zlp_supported(struct usb_gadget *g)
 {
 	return !g->quirk_zlp_not_supp;
+}
+
+/**
+ * gadget_avoids_skb_reserve - return true iff the hardware would like to avoid
+ *	skb_reserve to improve performance.
+ * @g: controller to check for quirk
+ */
+static inline int gadget_avoids_skb_reserve(struct usb_gadget *g)
+{
+	return g->quirk_avoids_skb_reserve;
 }
 
 /**

include/linux/usb_usual.h

···
 		/* Sets max_sectors to 240 */			\
 	US_FLAG(NO_REPORT_LUNS,	0x10000000)			\
 		/* Cannot handle REPORT_LUNS */			\
+	US_FLAG(ALWAYS_SYNC, 0x20000000)			\
+		/* lies about caching, so always sync */	\
 
 #define US_FLAG(name, value)	US_FL_##name = value ,
 enum { US_DO_ALL_FLAGS };

include/soc/at91/atmel-sfr.h

···
 #ifndef _LINUX_MFD_SYSCON_ATMEL_SFR_H
 #define _LINUX_MFD_SYSCON_ATMEL_SFR_H
 
+#define AT91_SFR_DDRCFG		0x04	/* DDR Configuration Register */
+/* 0x08 ~ 0x0c: Reserved */
+#define AT91_SFR_OHCIICR	0x10	/* OHCI INT Configuration Register */
+#define AT91_SFR_OHCIISR	0x14	/* OHCI INT Status Register */
 #define AT91_SFR_I2SCLKSEL	0x90	/* I2SC Register */
+
+/* Field definitions */
+#define AT91_OHCIICR_SUSPEND_A	BIT(8)
+#define AT91_OHCIICR_SUSPEND_B	BIT(9)
+#define AT91_OHCIICR_SUSPEND_C	BIT(10)
+
+#define AT91_OHCIICR_USB_SUSPEND	(AT91_OHCIICR_SUSPEND_A | \
+					 AT91_OHCIICR_SUSPEND_B | \
+					 AT91_OHCIICR_SUSPEND_C)
+
 
 #endif /* _LINUX_MFD_SYSCON_ATMEL_SFR_H */

include/uapi/linux/usb/functionfs.h

···
 	FUNCTIONFS_HAS_MS_OS_DESC = 8,
 	FUNCTIONFS_VIRTUAL_ADDR = 16,
 	FUNCTIONFS_EVENTFD = 32,
+	FUNCTIONFS_ALL_CTRL_RECIP = 64,
+	FUNCTIONFS_CONFIG0_SETUP = 128,
 };
 
 /* Descriptor of an non-audio endpoint */