Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (115 commits)
  EHCI: fix direction handling for interrupt data toggles
  USB: serial: add IDs for WinChipHead USB->RS232 adapter
  USB: OHCI: fix another regression for NVIDIA controllers
  usb: gadget: m66592-udc: add pullup function
  usb: gadget: m66592-udc: add function for external controller
  usb: gadget: r8a66597-udc: add pullup function
  usb: renesas_usbhs: support multi driver
  usb: renesas_usbhs: inaccessible pipe is not an error
  usb: renesas_usbhs: care buff alignment when dma handler
  USB: PL2303: correctly handle baudrates above 115200
  usb: r8a66597-hcd: fixup USB_PORT_STAT_C_SUSPEND shift
  usb: renesas_usbhs: compile/config are rescued
  usb: renesas_usbhs: fixup comment-out
  usb: update email address in ohci-sh and r8a66597-hcd
  usb: r8a66597-hcd: add function for external controller
  EHCI: only power off port if over-current is active
  USB: mon: Allow to use usbmon without debugfs
  USB: EHCI: go back to using the system clock for QH unlinks
  ehci: add pci quirk for Ordissimo and RM Slate 100 too
  ehci: refactor pci quirk to use standard dmi_check_system method
  ...

Fix up trivial conflicts in Documentation/feature-removal-schedule.txt

72 files changed, 6338 insertions, 1493 deletions

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 029e288805b6..44b6b40aafb4 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -96,9 +96,6 @@ config USB_GADGET_VBUS_DRAW
            This value will be used except for system-specific gadget
            drivers that have more specific information.
 
-config  USB_GADGET_SELECTED
-        boolean
-
 #
 # USB Peripheral Controller Support
 #
@@ -122,10 +119,9 @@ choice
 # Integrated controllers
 #
 
-config USB_GADGET_AT91
-        boolean "Atmel AT91 USB Device Port"
+config USB_AT91
+        tristate "Atmel AT91 USB Device Port"
         depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9 && !ARCH_AT91SAM9G45
-        select USB_GADGET_SELECTED
         help
            Many Atmel AT91 processors (such as the AT91RM2000) have a
            full speed USB Device Port with support for five configurable
@@ -135,27 +131,16 @@ config USB_GADGET_AT91
            dynamically linked module called "at91_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_AT91
-        tristate
-        depends on USB_GADGET_AT91
-        default USB_GADGET
-
-config USB_GADGET_ATMEL_USBA
-        boolean "Atmel USBA"
+config USB_ATMEL_USBA
+        tristate "Atmel USBA"
         select USB_GADGET_DUALSPEED
         depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
         help
           USBA is the integrated high-speed USB Device controller on
           the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
 
-config USB_ATMEL_USBA
-        tristate
-        depends on USB_GADGET_ATMEL_USBA
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_FSL_USB2
-        boolean "Freescale Highspeed USB DR Peripheral Controller"
+config USB_FSL_USB2
+        tristate "Freescale Highspeed USB DR Peripheral Controller"
         depends on FSL_SOC || ARCH_MXC
         select USB_GADGET_DUALSPEED
         select USB_FSL_MPH_DR_OF if OF
@@ -170,26 +155,15 @@ config USB_GADGET_FSL_USB2
            dynamically linked module called "fsl_usb2_udc" and force
            all gadget drivers to also be dynamically linked.
 
-config USB_FSL_USB2
-        tristate
-        depends on USB_GADGET_FSL_USB2
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_FUSB300
-        boolean "Faraday FUSB300 USB Peripheral Controller"
+config USB_FUSB300
+        tristate "Faraday FUSB300 USB Peripheral Controller"
+        depends on !PHYS_ADDR_T_64BIT
         select USB_GADGET_DUALSPEED
         help
            Faraday usb device controller FUSB300 driver
 
-config USB_FUSB300
-        tristate
-        depends on USB_GADGET_FUSB300
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_OMAP
-        boolean "OMAP USB Device Controller"
+config USB_OMAP
+        tristate "OMAP USB Device Controller"
         depends on ARCH_OMAP
         select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
         select USB_OTG_UTILS if ARCH_OMAP
@@ -204,14 +178,8 @@ config USB_GADGET_OMAP
            dynamically linked module called "omap_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_OMAP
-        tristate
-        depends on USB_GADGET_OMAP
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_PXA25X
-        boolean "PXA 25x or IXP 4xx"
+config USB_PXA25X
+        tristate "PXA 25x or IXP 4xx"
         depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
         select USB_OTG_UTILS
         help
@@ -226,24 +194,18 @@ config USB_GADGET_PXA25X
            dynamically linked module called "pxa25x_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_PXA25X
-        tristate
-        depends on USB_GADGET_PXA25X
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
 # if there's only one gadget driver, using only two bulk endpoints,
 # don't waste memory for the other endpoints
 config USB_PXA25X_SMALL
-        depends on USB_GADGET_PXA25X
+        depends on USB_PXA25X
         bool
         default n if USB_ETH_RNDIS
         default y if USB_ZERO
         default y if USB_ETH
         default y if USB_G_SERIAL
 
-config USB_GADGET_R8A66597
-        boolean "Renesas R8A66597 USB Peripheral Controller"
+config USB_R8A66597
+        tristate "Renesas R8A66597 USB Peripheral Controller"
         select USB_GADGET_DUALSPEED
         help
            R8A66597 is a discrete USB host and peripheral controller chip that
@@ -254,32 +216,22 @@ config USB_GADGET_R8A66597
            dynamically linked module called "r8a66597_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_R8A66597
-        tristate
-        depends on USB_GADGET_R8A66597
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_RENESAS_USBHS
-        boolean "Renesas USBHS"
+config USB_RENESAS_USBHS_UDC
+        tristate 'Renesas USBHS controller'
+        depends on SUPERH || ARCH_SHMOBILE
         depends on USB_RENESAS_USBHS
         select USB_GADGET_DUALSPEED
         help
-           Renesas USBHS is a discrete USB host and peripheral controller
-           chip that supports both full and high speed USB 2.0 data transfers.
-           platform is able to configure endpoint (pipe) style
+           Renesas USBHS is a discrete USB host and peripheral controller chip
+           that supports both full and high speed USB 2.0 data transfers.
+           It has nine or more configurable endpoints, and endpoint zero.
 
-           Say "y" to enable the gadget specific portion of the USBHS driver.
-
-
-config USB_RENESAS_USBHS_UDC
-        tristate
-        depends on USB_GADGET_RENESAS_USBHS
-        default USB_GADGET
-        select USB_GADGET_SELECTED
+           Say "y" to link the driver statically, or "m" to build a
+           dynamically linked module called "renesas_usbhs" and force all
+           gadget drivers to also be dynamically linked.
 
-config USB_GADGET_PXA27X
-        boolean "PXA 27x"
+config USB_PXA27X
+        tristate "PXA 27x"
         depends on ARCH_PXA && (PXA27x || PXA3xx)
         select USB_OTG_UTILS
         help
@@ -293,14 +245,8 @@ config USB_GADGET_PXA27X
            dynamically linked module called "pxa27x_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_PXA27X
-        tristate
-        depends on USB_GADGET_PXA27X
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_S3C_HSOTG
-        boolean "S3C HS/OtG USB Device controller"
+config USB_S3C_HSOTG
+        tristate "S3C HS/OtG USB Device controller"
         depends on S3C_DEV_USB_HSOTG
         select USB_GADGET_S3C_HSOTG_PIO
         select USB_GADGET_DUALSPEED
@@ -308,14 +254,8 @@ config USB_GADGET_S3C_HSOTG
           The Samsung S3C64XX USB2.0 high-speed gadget controller
           integrated into the S3C64XX series SoC.
 
-config USB_S3C_HSOTG
-        tristate
-        depends on USB_GADGET_S3C_HSOTG
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_IMX
-        boolean "Freescale IMX USB Peripheral Controller"
+config USB_IMX
+        tristate "Freescale IMX USB Peripheral Controller"
         depends on ARCH_MX1
         help
            Freescale's IMX series include an integrated full speed
@@ -329,14 +269,8 @@ config USB_GADGET_IMX
            dynamically linked module called "imx_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_IMX
-        tristate
-        depends on USB_GADGET_IMX
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_S3C2410
-        boolean "S3C2410 USB Device Controller"
+config USB_S3C2410
+        tristate "S3C2410 USB Device Controller"
         depends on ARCH_S3C2410
         help
           Samsung's S3C2410 is an ARM-4 processor with an integrated
@@ -346,18 +280,12 @@ config USB_GADGET_S3C2410
           This driver has been tested on the S3C2410, S3C2412, and
           S3C2440 processors.
 
-config USB_S3C2410
-        tristate
-        depends on USB_GADGET_S3C2410
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
 config USB_S3C2410_DEBUG
         boolean "S3C2410 udc debug messages"
-        depends on USB_GADGET_S3C2410
+        depends on USB_S3C2410
 
-config USB_GADGET_S3C_HSUDC
-        boolean "S3C2416, S3C2443 and S3C2450 USB Device Controller"
+config USB_S3C_HSUDC
+        tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
         depends on ARCH_S3C2410
         select USB_GADGET_DUALSPEED
         help
@@ -367,41 +295,29 @@ config USB_GADGET_S3C_HSUDC
 
           This driver has been tested on S3C2416 and S3C2450 processors.
 
-config USB_S3C_HSUDC
-        tristate
-        depends on USB_GADGET_S3C_HSUDC
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_PXA_U2O
-        boolean "PXA9xx Processor USB2.0 controller"
+config USB_PXA_U2O
+        tristate "PXA9xx Processor USB2.0 controller"
+        depends on ARCH_MMP
         select USB_GADGET_DUALSPEED
         help
           PXA9xx Processor series include a high speed USB2.0 device
           controller, which support high speed and full speed USB peripheral.
 
-config USB_PXA_U2O
-        tristate
-        depends on USB_GADGET_PXA_U2O
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
 #
 # Controllers available in both integrated and discrete versions
 #
 
 # musb builds in ../musb along with host support
 config USB_GADGET_MUSB_HDRC
-        boolean "Inventra HDRC USB Peripheral (TI, ADI, ...)"
+        tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)"
         depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
         select USB_GADGET_DUALSPEED
-        select USB_GADGET_SELECTED
         help
           This OTG-capable silicon IP is used in dual designs including
           the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
 
-config USB_GADGET_M66592
-        boolean "Renesas M66592 USB Peripheral Controller"
+config USB_M66592
+        tristate "Renesas M66592 USB Peripheral Controller"
         select USB_GADGET_DUALSPEED
         help
            M66592 is a discrete USB peripheral controller chip that
@@ -412,18 +328,12 @@ config USB_GADGET_M66592
            dynamically linked module called "m66592_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_M66592
-        tristate
-        depends on USB_GADGET_M66592
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
 #
 # Controllers available only in discrete form (and all PCI controllers)
 #
 
-config USB_GADGET_AMD5536UDC
-        boolean "AMD5536 UDC"
+config USB_AMD5536UDC
+        tristate "AMD5536 UDC"
         depends on PCI
         select USB_GADGET_DUALSPEED
         help
@@ -437,14 +347,8 @@ config USB_GADGET_AMD5536UDC
            dynamically linked module called "amd5536udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_AMD5536UDC
-        tristate
-        depends on USB_GADGET_AMD5536UDC
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_FSL_QE
-        boolean "Freescale QE/CPM USB Device Controller"
+config USB_FSL_QE
+        tristate "Freescale QE/CPM USB Device Controller"
         depends on FSL_SOC && (QUICC_ENGINE || CPM)
         help
            Some of Freescale PowerPC processors have a Full Speed
@@ -456,14 +360,8 @@ config USB_GADGET_FSL_QE
            Set CONFIG_USB_GADGET to "m" to build this driver as a
            dynamically linked module called "fsl_qe_udc".
 
-config USB_FSL_QE
-        tristate
-        depends on USB_GADGET_FSL_QE
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_CI13XXX_PCI
-        boolean "MIPS USB CI13xxx PCI UDC"
+config USB_CI13XXX_PCI
+        tristate "MIPS USB CI13xxx PCI UDC"
         depends on PCI
         select USB_GADGET_DUALSPEED
         help
@@ -474,14 +372,31 @@ config USB_GADGET_CI13XXX_PCI
           dynamically linked module called "ci13xxx_udc" and force all
           gadget drivers to also be dynamically linked.
 
-config USB_CI13XXX_PCI
-        tristate
-        depends on USB_GADGET_CI13XXX_PCI
-        default USB_GADGET
-        select USB_GADGET_SELECTED
+config USB_NET2272
+        tristate "PLX NET2272"
+        select USB_GADGET_DUALSPEED
+        help
+          PLX NET2272 is a USB peripheral controller which supports
+          both full and high speed USB 2.0 data transfers.
+
+          It has three configurable endpoints, as well as endpoint zero
+          (for control transfer).
+          Say "y" to link the driver statically, or "m" to build a
+          dynamically linked module called "net2272" and force all
+          gadget drivers to also be dynamically linked.
+
+config USB_NET2272_DMA
+        boolean "Support external DMA controller"
+        depends on USB_NET2272
+        help
+          The NET2272 part can optionally support an external DMA
+          controller, but your board has to have support in the
+          driver itself.
 
-config USB_GADGET_NET2280
-        boolean "NetChip 228x"
+          If unsure, say "N" here.  The driver works fine in PIO mode.
+
+config USB_NET2280
+        tristate "NetChip 228x"
         depends on PCI
         select USB_GADGET_DUALSPEED
         help
@@ -496,14 +411,8 @@ config USB_GADGET_NET2280
            dynamically linked module called "net2280" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_NET2280
-        tristate
-        depends on USB_GADGET_NET2280
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_GOKU
-        boolean "Toshiba TC86C001 'Goku-S'"
+config USB_GOKU
+        tristate "Toshiba TC86C001 'Goku-S'"
         depends on PCI
         help
            The Toshiba TC86C001 is a PCI device which includes controllers
@@ -516,15 +425,10 @@ config USB_GADGET_GOKU
            dynamically linked module called "goku_udc" and to force all
            gadget drivers to also be dynamically linked.
 
-config USB_GOKU
-        tristate
-        depends on USB_GADGET_GOKU
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_LANGWELL
-        boolean "Intel Langwell USB Device Controller"
+config USB_LANGWELL
+        tristate "Intel Langwell USB Device Controller"
         depends on PCI
+        depends on !PHYS_ADDR_T_64BIT
         select USB_GADGET_DUALSPEED
         help
            Intel Langwell USB Device Controller is a High-Speed USB
@@ -537,14 +441,8 @@ config USB_GADGET_LANGWELL
            dynamically linked module called "langwell_udc" and force all
            gadget drivers to also be dynamically linked.
 
-config USB_LANGWELL
-        tristate
-        depends on USB_GADGET_LANGWELL
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_EG20T
-        boolean "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH UDC"
+config USB_EG20T
+        tristate "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH UDC"
         depends on PCI
         select USB_GADGET_DUALSPEED
         help
@@ -565,14 +463,8 @@ config USB_GADGET_EG20T
           ML7213 is companion chip for Intel Atom E6xx series.
           ML7213 is completely compatible for Intel EG20T PCH.
 
-config USB_EG20T
-        tristate
-        depends on USB_GADGET_EG20T
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
-config USB_GADGET_CI13XXX_MSM
-        boolean "MIPS USB CI13xxx for MSM"
+config USB_CI13XXX_MSM
+        tristate "MIPS USB CI13xxx for MSM"
         depends on ARCH_MSM
         select USB_GADGET_DUALSPEED
         select USB_MSM_OTG
@@ -588,31 +480,26 @@ config USB_GADGET_CI13XXX_MSM
           dynamically linked module called "ci13xxx_msm" and force all
           gadget drivers to also be dynamically linked.
 
-config USB_CI13XXX_MSM
-        tristate
-        depends on USB_GADGET_CI13XXX_MSM
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
 #
 # LAST -- dummy/emulated controller
 #
 
-config USB_GADGET_DUMMY_HCD
-        boolean "Dummy HCD (DEVELOPMENT)"
+config USB_DUMMY_HCD
+        tristate "Dummy HCD (DEVELOPMENT)"
         depends on USB=y || (USB=m && USB_GADGET=m)
         select USB_GADGET_DUALSPEED
+        select USB_GADGET_SUPERSPEED
         help
           This host controller driver emulates USB, looping all data transfer
           requests back to a USB "gadget driver" in the same host.  The host
           side is the master; the gadget side is the slave.  Gadget drivers
           can be high, full, or low speed; and they have access to endpoints
           like those from NET2280, PXA2xx, or SA1100 hardware.
-          
+
           This may help in some stages of creating a driver to embed in a
           Linux device, since it lets you debug several parts of the gadget
           driver without its hardware or drivers being involved.
-          
+
           Since such a gadget side driver needs to interoperate with a host
           side Linux-USB device driver, this may help to debug both sides
           of a USB protocol stack.
@@ -621,12 +508,6 @@ config USB_GADGET_DUMMY_HCD
           dynamically linked module called "dummy_hcd" and force all
           gadget drivers to also be dynamically linked.
 
-config USB_DUMMY_HCD
-        tristate
-        depends on USB_GADGET_DUMMY_HCD
-        default USB_GADGET
-        select USB_GADGET_SELECTED
-
 # NOTE:  Please keep dummy_hcd LAST so that "real hardware" appears
 # first and will be selected by default.
 
@@ -637,12 +518,18 @@ config USB_GADGET_DUALSPEED
         bool
         depends on USB_GADGET
 
+# Selected by UDC drivers that support super-speed opperation
+config USB_GADGET_SUPERSPEED
+        bool
+        depends on USB_GADGET
+        depends on USB_GADGET_DUALSPEED
+
 #
 # USB Gadget Drivers
 #
 choice
         tristate "USB Gadget Drivers"
-        depends on USB_GADGET && USB_GADGET_SELECTED
+        depends on USB_GADGET
         default USB_ETH
         help
           A Linux "Gadget Driver" talks to the USB Peripheral Controller
@@ -848,7 +735,7 @@ config USB_FUNCTIONFS_GENERIC
           no Ethernet interface.
 
 config USB_FILE_STORAGE
-        tristate "File-backed Storage Gadget"
+        tristate "File-backed Storage Gadget (DEPRECATED)"
         depends on BLOCK
         help
           The File-backed Storage Gadget acts as a USB Mass Storage
@@ -859,6 +746,9 @@ config USB_FILE_STORAGE
           Say "y" to link the driver statically, or "m" to build a
           dynamically linked module called "g_file_storage".
 
+          NOTE: This driver is deprecated.  Its replacement is the
+          Mass Storage Gadget.
+
 config USB_FILE_STORAGE_TEST
         bool "File-backed Storage Gadget testing version"
         depends on USB_FILE_STORAGE
@@ -878,14 +768,11 @@ config USB_MASS_STORAGE
           device (in much the same way as the "loop" device driver),
           specified as a module parameter or sysfs option.
 
-          This is heavily based on File-backed Storage Gadget and in most
-          cases you will want to use FSG instead.  This gadget is mostly
-          here to test the functionality of the Mass Storage Function
-          which may be used with composite framework.
+          This driver is an updated replacement for the deprecated
+          File-backed Storage Gadget (g_file_storage).
 
           Say "y" to link the driver statically, or "m" to build
-          a dynamically linked module called "g_mass_storage".  If unsure,
-          consider File-backed Storage Gadget.
+          a dynamically linked module called "g_mass_storage".
 
 config USB_G_SERIAL
         tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 4fe92b18a055..9ba725af4a08 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -3,7 +3,9 @@
 #
 ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG
 
+obj-$(CONFIG_USB_GADGET)        += udc-core.o
 obj-$(CONFIG_USB_DUMMY_HCD)     += dummy_hcd.o
+obj-$(CONFIG_USB_NET2272)       += net2272.o
 obj-$(CONFIG_USB_NET2280)       += net2280.o
 obj-$(CONFIG_USB_AMD5536UDC)    += amd5536udc.o
 obj-$(CONFIG_USB_PXA25X)        += pxa25x_udc.o
diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
index 95e8138cd48f..70f2b376c86d 100644
--- a/drivers/usb/gadget/amd5536udc.c
+++ b/drivers/usb/gadget/amd5536udc.c
@@ -1438,10 +1438,15 @@ static int udc_wakeup(struct usb_gadget *gadget)
         return 0;
 }
 
+static int amd5536_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int amd5536_stop(struct usb_gadget_driver *driver);
 /* gadget operations */
 static const struct usb_gadget_ops udc_ops = {
         .wakeup         = udc_wakeup,
         .get_frame      = udc_get_frame,
+        .start          = amd5536_start,
+        .stop           = amd5536_stop,
 };
 
 /* Setups endpoint parameters, adds endpoints to linked list */
@@ -1955,7 +1960,7 @@ static int setup_ep0(struct udc *dev)
 }
 
 /* Called by gadget driver to register itself */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int amd5536_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct udc              *dev = udc;
@@ -2002,7 +2007,6 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /* shutdown requests and disconnect from gadget */
 static void
@@ -2027,7 +2031,7 @@ __acquires(dev->lock)
 }
 
 /* Called by gadget driver to unregister itself */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int amd5536_stop(struct usb_gadget_driver *driver)
 {
         struct udc      *dev = udc;
         unsigned long   flags;
@@ -2057,8 +2061,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
 
 /* Clear pending NAK bits */
 static void udc_process_cnak_queue(struct udc *dev)
@@ -3134,6 +3136,7 @@ static void udc_pci_remove(struct pci_dev *pdev)
 
         dev = pci_get_drvdata(pdev);
 
+        usb_del_gadget_udc(&udc->gadget);
         /* gadget driver must not be registered */
         BUG_ON(dev->driver != NULL);
 
@@ -3382,8 +3385,13 @@ static int udc_probe(struct udc *dev)
                 "driver version: %s(for Geode5536 B1)\n", tmp);
         udc = dev;
 
+        retval = usb_add_gadget_udc(&udc->pdev->dev, &dev->gadget);
+        if (retval)
+                goto finished;
+
         retval = device_register(&dev->gadget.dev);
         if (retval) {
+                usb_del_gadget_udc(&dev->gadget);
                 put_device(&dev->gadget.dev);
                 goto finished;
         }
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index f4690ffcb489..98cbc06c30fd 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -985,12 +985,18 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on)
         return 0;
 }
 
+static int at91_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int at91_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops at91_udc_ops = {
         .get_frame              = at91_get_frame,
         .wakeup                 = at91_wakeup,
         .set_selfpowered        = at91_set_selfpowered,
         .vbus_session           = at91_vbus_session,
         .pullup                 = at91_pullup,
+        .start                  = at91_start,
+        .stop                   = at91_stop,
 
         /*
          * VBUS-powered devices may also also want to support bigger
@@ -1628,7 +1634,7 @@ static void at91_vbus_timer(unsigned long data)
                 schedule_work(&udc->vbus_timer_work);
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int at91_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct at91_udc *udc = &controller;
@@ -1672,9 +1678,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
         DBG("bound to %s\n", driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
+static int at91_stop(struct usb_gadget_driver *driver)
 {
         struct at91_udc *udc = &controller;
         unsigned long   flags;
@@ -1696,7 +1701,6 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
         DBG("unbound from %s\n", driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL (usb_gadget_unregister_driver);
 
 /*-------------------------------------------------------------------------*/
 
@@ -1854,13 +1858,18 @@ static int __init at91udc_probe(struct platform_device *pdev)
                 DBG("no VBUS detection, assuming always-on\n");
                 udc->vbus = 1;
         }
+        retval = usb_add_gadget_udc(dev, &udc->gadget);
+        if (retval)
+                goto fail4;
         dev_set_drvdata(dev, udc);
         device_init_wakeup(dev, 1);
         create_debug_file(udc);
 
         INFO("%s version %s\n", driver_name, DRIVER_VERSION);
         return 0;
-
+fail4:
+        if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled)
+                free_irq(udc->board.vbus_pin, udc);
 fail3:
         if (udc->board.vbus_pin > 0)
                 gpio_free(udc->board.vbus_pin);
@@ -1887,6 +1896,7 @@ static int __exit at91udc_remove(struct platform_device *pdev)
 
         DBG("remove\n");
 
+        usb_del_gadget_udc(&udc->gadget);
         if (udc->driver)
                 return -EBUSY;
 
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index f045c8968a6e..5b1665eb1bef 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1007,10 +1007,16 @@ usba_udc_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered)
         return 0;
 }
 
+static int atmel_usba_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int atmel_usba_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops usba_udc_ops = {
         .get_frame              = usba_udc_get_frame,
         .wakeup                 = usba_udc_wakeup,
         .set_selfpowered        = usba_udc_set_selfpowered,
+        .start                  = atmel_usba_start,
+        .stop                   = atmel_usba_stop,
 };
 
 static struct usb_endpoint_descriptor usba_ep0_desc = {
@@ -1789,7 +1795,7 @@ out:
         return IRQ_HANDLED;
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int atmel_usba_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct usba_udc *udc = &the_udc;
@@ -1842,9 +1848,8 @@ err_driver_bind:
         udc->gadget.dev.driver = NULL;
         return ret;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int atmel_usba_stop(struct usb_gadget_driver *driver)
 {
         struct usba_udc *udc = &the_udc;
         unsigned long flags;
@@ -1880,7 +1885,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 static int __init usba_udc_probe(struct platform_device *pdev)
 {
@@ -2021,12 +2025,24 @@ static int __init usba_udc_probe(struct platform_device *pdev)
                 }
         }
 
+        ret = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
+        if (ret)
+                goto err_add_udc;
+
         usba_init_debugfs(udc);
         for (i = 1; i < pdata->num_ep; i++)
                 usba_ep_init_debugfs(udc, &usba_ep[i]);
 
         return 0;
 
+err_add_udc:
+        if (gpio_is_valid(pdata->vbus_pin)) {
+                free_irq(gpio_to_irq(udc->vbus_pin), udc);
+                gpio_free(udc->vbus_pin);
+        }
+
+        device_unregister(&udc->gadget.dev);
+
 err_device_add:
         free_irq(irq, udc);
 err_request_irq:
@@ -2053,6 +2069,8 @@ static int __exit usba_udc_remove(struct platform_device *pdev)
 
         udc = platform_get_drvdata(pdev);
 
+        usb_del_gadget_udc(&udc->gadget);
+
         for (i = 1; i < pdata->num_ep; i++)
                 usba_ep_cleanup_debugfs(&usba_ep[i]);
         usba_cleanup_debugfs(udc);
diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c
index 93b999e49ef3..9d89ae4765a9 100644
--- a/drivers/usb/gadget/audio.c
+++ b/drivers/usb/gadget/audio.c
@@ -165,6 +165,7 @@ static struct usb_composite_driver audio_driver = {
         .name           = "g_audio",
         .dev            = &device_desc,
         .strings        = audio_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = __exit_p(audio_unbind),
 };
 
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index 2720ab07ef1a..b1c1afbb8750 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -244,6 +244,7 @@ static struct usb_composite_driver cdc_driver = {
         .name           = "g_cdc",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = __exit_p(cdc_unbind),
 };
 
diff --git a/drivers/usb/gadget/ci13xxx_msm.c b/drivers/usb/gadget/ci13xxx_msm.c
index 139ac9419597..470981ad6f77 100644
--- a/drivers/usb/gadget/ci13xxx_msm.c
+++ b/drivers/usb/gadget/ci13xxx_msm.c
@@ -126,6 +126,7 @@ static struct platform_driver ci13xxx_msm_driver = {
         .probe = ci13xxx_msm_probe,
         .driver = { .name = "msm_hsusb", },
 };
+MODULE_ALIAS("platform:msm_hsusb");
 
 static int __init ci13xxx_msm_init(void)
 {
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index baaf87ed7685..1265a8502ea0 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -857,7 +857,7 @@ static void dbg_print(u8 addr, const char *name, int status, const char *extra)
         stamp = stamp * 1000000 + tval.tv_usec;
 
         scnprintf(dbg_data.buf[dbg_data.idx], DBG_DATA_MSG,
-                  "%04X\t» %02X %-7.7s %4i «\t%s\n",
+                  "%04X\t? %02X %-7.7s %4i ?\t%s\n",
                   stamp, addr, name, status, extra);
 
         dbg_inc(&dbg_data.idx);
@@ -865,7 +865,7 @@ static void dbg_print(u8 addr, const char *name, int status, const char *extra)
         write_unlock_irqrestore(&dbg_data.lck, flags);
 
         if (dbg_data.tty != 0)
-                pr_notice("%04X\t» %02X %-7.7s %4i «\t%s\n",
+                pr_notice("%04X\t? %02X %-7.7s %4i ?\t%s\n",
                           stamp, addr, name, status, extra);
 }
 
@@ -1025,15 +1025,15 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 
         n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
                        isr_statistics.test);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» ui  = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? ui  = %d\n",
                        isr_statistics.ui);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» uei = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? uei = %d\n",
                        isr_statistics.uei);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» pci = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? pci = %d\n",
                        isr_statistics.pci);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» uri = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? uri = %d\n",
                        isr_statistics.uri);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» sli = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? sli = %d\n",
                        isr_statistics.sli);
         n += scnprintf(buf + n, PAGE_SIZE - n, "*none = %d\n",
                        isr_statistics.none);
@@ -1214,12 +1214,13 @@ static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
  *
  * Check "device.h" for details
  */
+#define DUMP_ENTRIES    512
 static ssize_t show_registers(struct device *dev,
                               struct device_attribute *attr, char *buf)
 {
         struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
         unsigned long flags;
-        u32 dump[512];
+        u32 *dump;
         unsigned i, k, n = 0;
 
         dbg_trace("[%s] %p\n", __func__, buf);
@@ -1228,8 +1229,14 @@ static ssize_t show_registers(struct device *dev,
                 return 0;
         }
 
+        dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
+        if (!dump) {
+                dev_err(dev, "%s: out of memory\n", __func__);
+                return 0;
+        }
+
         spin_lock_irqsave(udc->lock, flags);
-        k = hw_register_read(dump, sizeof(dump)/sizeof(u32));
+        k = hw_register_read(dump, DUMP_ENTRIES);
         spin_unlock_irqrestore(udc->lock, flags);
 
         for (i = 0; i < k; i++) {
@@ -1237,6 +1244,7 @@ static ssize_t show_registers(struct device *dev,
                                "reg[0x%04X] = 0x%08X\n",
                                i * (unsigned)sizeof(u32), dump[i]);
         }
+        kfree(dump);
 
         return n;
 }
@@ -2515,6 +2523,9 @@ static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
         return -ENOTSUPP;
 }
 
+static int ci13xxx_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int ci13xxx_stop(struct usb_gadget_driver *driver);
 /**
  * Device operations part of the API to the USB controller hardware,
  * which don't involve endpoints (or i/o)
@@ -2524,17 +2535,19 @@ static const struct usb_gadget_ops usb_gadget_ops = {
         .vbus_session   = ci13xxx_vbus_session,
         .wakeup         = ci13xxx_wakeup,
         .vbus_draw      = ci13xxx_vbus_draw,
+        .start          = ci13xxx_start,
+        .stop           = ci13xxx_stop,
 };
 
 /**
- * usb_gadget_probe_driver: register a gadget driver
+ * ci13xxx_start: register a gadget driver
  * @driver: the driver being registered
  * @bind: the driver's bind callback
  *
- * Check usb_gadget_probe_driver() at <linux/usb/gadget.h> for details.
+ * Check ci13xxx_start() at <linux/usb/gadget.h> for details.
  * Interrupts are enabled here.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int ci13xxx_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct ci13xxx *udc = _udc;
@@ -2615,10 +2628,13 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
         if (retval)
                 goto done;
         spin_unlock_irqrestore(udc->lock, flags);
-        retval = usb_ep_enable(&udc->ep0out.ep, &ctrl_endpt_out_desc);
+        udc->ep0out.ep.desc = &ctrl_endpt_out_desc;
+        retval = usb_ep_enable(&udc->ep0out.ep);
         if (retval)
                 return retval;
-        retval = usb_ep_enable(&udc->ep0in.ep, &ctrl_endpt_in_desc);
+
+        udc->ep0in.ep.desc = &ctrl_endpt_in_desc;
+        retval = usb_ep_enable(&udc->ep0in.ep);
         if (retval)
                 return retval;
         spin_lock_irqsave(udc->lock, flags);
@@ -2657,14 +2673,13 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
         spin_unlock_irqrestore(udc->lock, flags);
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /**
- * usb_gadget_unregister_driver: unregister a gadget driver
+ * ci13xxx_stop: unregister a gadget driver
  *
  * Check usb_gadget_unregister_driver() at "usb_gadget.h" for details
  */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int ci13xxx_stop(struct usb_gadget_driver *driver)
 {
         struct ci13xxx *udc = _udc;
         unsigned long i, flags;
@@ -2726,7 +2741,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /******************************************************************************
  * BUS block
@@ -2901,12 +2915,23 @@ static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
                 if (retval)
                         goto remove_dbg;
         }
+
+        retval = usb_add_gadget_udc(dev, &udc->gadget);
+        if (retval)
+                goto remove_trans;
+
         pm_runtime_no_callbacks(&udc->gadget.dev);
         pm_runtime_enable(&udc->gadget.dev);
 
         _udc = udc;
         return retval;
 
+remove_trans:
+        if (udc->transceiver) {
+                otg_set_peripheral(udc->transceiver, &udc->gadget);
+                otg_put_transceiver(udc->transceiver);
+        }
+
         err("error = %i", retval);
 remove_dbg:
 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
@@ -2936,6 +2961,7 @@ static void udc_remove(void)
                 err("EINVAL");
                 return;
         }
+        usb_del_gadget_udc(&udc->gadget);
 
         if (udc->transceiver) {
                 otg_set_peripheral(udc->transceiver, &udc->gadget);
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 5cbb1a41c223..5ef87794fd32 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -27,7 +27,7 @@
 #include <linux/utsname.h>
 
 #include <linux/usb/composite.h>
-
+#include <asm/unaligned.h>
 
 /*
  * The code in this file is utility code, used to build a gadget driver
@@ -74,6 +74,130 @@ MODULE_PARM_DESC(iSerialNumber, "SerialNumber string");
 static char composite_manufacturer[50];
 
 /*-------------------------------------------------------------------------*/
+/**
+ * next_ep_desc() - advance to the next EP descriptor
+ * @t: currect pointer within descriptor array
+ *
+ * Return: next EP descriptor or NULL
+ *
+ * Iterate over @t until either EP descriptor found or
+ * NULL (that indicates end of list) encountered
+ */
+static struct usb_descriptor_header**
+next_ep_desc(struct usb_descriptor_header **t)
+{
+        for (; *t; t++) {
+                if ((*t)->bDescriptorType == USB_DT_ENDPOINT)
+                        return t;
+        }
+        return NULL;
+}
+
+/*
+ * for_each_ep_desc()- iterate over endpoint descriptors in the
+ *              descriptors list
+ * @start:      pointer within descriptor array.
+ * @ep_desc:    endpoint descriptor to use as the loop cursor
+ */
+#define for_each_ep_desc(start, ep_desc) \
+        for (ep_desc = next_ep_desc(start); \
+              ep_desc; ep_desc = next_ep_desc(ep_desc+1))
+
+/**
+ * config_ep_by_speed() - configures the given endpoint
+ * according to gadget speed.
+ * @g: pointer to the gadget
+ * @f: usb function
+ * @_ep: the endpoint to configure
+ *
+ * Return: error code, 0 on success
+ *
+ * This function chooses the right descriptors for a given
+ * endpoint according to gadget speed and saves it in the
+ * endpoint desc field. If the endpoint already has a descriptor
+ * assigned to it - overwrites it with currently corresponding
+ * descriptor. The endpoint maxpacket field is updated according
+ * to the chosen descriptor.
+ * Note: the supplied function should hold all the descriptors
+ * for supported speeds
+ */
+int config_ep_by_speed(struct usb_gadget *g,
+                        struct usb_function *f,
+                        struct usb_ep *_ep)
+{
+        struct usb_endpoint_descriptor *chosen_desc = NULL;
+        struct usb_descriptor_header **speed_desc = NULL;
+
+        struct usb_ss_ep_comp_descriptor *comp_desc = NULL;
+        int want_comp_desc = 0;
+
+        struct usb_descriptor_header **d_spd; /* cursor for speed desc */
+
+        if (!g || !f || !_ep)
+                return -EIO;
+
+        /* select desired speed */
+        switch (g->speed) {
+        case USB_SPEED_SUPER:
+                if (gadget_is_superspeed(g)) {
+                        speed_desc = f->ss_descriptors;
+                        want_comp_desc = 1;
+                        break;
+                }
+                /* else: Fall trough */
+        case USB_SPEED_HIGH:
+                if (gadget_is_dualspeed(g)) {
+                        speed_desc = f->hs_descriptors;
+                        break;
+                }
+                /* else: fall through */
+        default:
+                speed_desc = f->descriptors;
+        }
+        /* find descriptors */
+        for_each_ep_desc(speed_desc, d_spd) {
+                chosen_desc = (struct usb_endpoint_descriptor *)*d_spd;
+                if (chosen_desc->bEndpointAddress == _ep->address)
+                        goto ep_found;
+        }
+        return -EIO;
+
+ep_found:
+        /* commit results */
+        _ep->maxpacket = le16_to_cpu(chosen_desc->wMaxPacketSize);
+        _ep->desc = chosen_desc;
+        _ep->comp_desc = NULL;
+        _ep->maxburst = 0;
+        _ep->mult = 0;
+        if (!want_comp_desc)
+                return 0;
+
+        /*
+         * Companion descriptor should follow EP descriptor
+         * USB 3.0 spec, #9.6.7
+         */
+        comp_desc = (struct usb_ss_ep_comp_descriptor *)*(++d_spd);
+        if (!comp_desc ||
+            (comp_desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP))
+                return -EIO;
+        _ep->comp_desc = comp_desc;
+        if (g->speed == USB_SPEED_SUPER) {
+                switch (usb_endpoint_type(_ep->desc)) {
+                case USB_ENDPOINT_XFER_BULK:
+                case USB_ENDPOINT_XFER_INT:
+                        _ep->maxburst = comp_desc->bMaxBurst;
+                        break;
+                case USB_ENDPOINT_XFER_ISOC:
+                        /* mult: bits 1:0 of bmAttributes */
+                        _ep->mult = comp_desc->bmAttributes & 0x3;
+                        break;
+                default:
+                        /* Do nothing for control endpoints */
+                        break;
+                }
+        }
+        return 0;
+}
 
 /**
  * usb_add_function() - add a function to a configuration
@@ -123,6 +247,8 @@ int usb_add_function(struct usb_configuration *config,
                 config->fullspeed = true;
         if (!config->highspeed && function->hs_descriptors)
                 config->highspeed = true;
+        if (!config->superspeed && function->ss_descriptors)
+                config->superspeed = true;
 
 done:
         if (value)
@@ -266,10 +392,17 @@ static int config_buf(struct usb_configuration *config,
         list_for_each_entry(f, &config->functions, list) {
                 struct usb_descriptor_header **descriptors;
 
-                if (speed == USB_SPEED_HIGH)
+                switch (speed) {
+                case USB_SPEED_SUPER:
+                        descriptors = f->ss_descriptors;
+                        break;
+                case USB_SPEED_HIGH:
                         descriptors = f->hs_descriptors;
-                else
+                        break;
+                default:
                         descriptors = f->descriptors;
+                }
+
                 if (!descriptors)
                         continue;
                 status = usb_descriptor_fillbuf(next, len,
@@ -292,9 +425,10 @@ static int config_desc(struct usb_composite_dev *cdev, unsigned w_value)
         u8                              type = w_value >> 8;
         enum usb_device_speed           speed = USB_SPEED_UNKNOWN;
 
-        if (gadget_is_dualspeed(gadget)) {
-                int                     hs = 0;
-
+        if (gadget->speed == USB_SPEED_SUPER)
+                speed = gadget->speed;
+        else if (gadget_is_dualspeed(gadget)) {
+                int     hs = 0;
                 if (gadget->speed == USB_SPEED_HIGH)
                         hs = 1;
                 if (type == USB_DT_OTHER_SPEED_CONFIG)
@@ -308,13 +442,20 @@ static int config_desc(struct usb_composite_dev *cdev, unsigned w_value)
         w_value &= 0xff;
         list_for_each_entry(c, &cdev->configs, list) {
                 /* ignore configs that won't work at this speed */
-                if (speed == USB_SPEED_HIGH) {
+                switch (speed) {
+                case USB_SPEED_SUPER:
+                        if (!c->superspeed)
+                                continue;
+                        break;
+                case USB_SPEED_HIGH:
                         if (!c->highspeed)
                                 continue;
-                } else {
+                        break;
+                default:
                         if (!c->fullspeed)
                                 continue;
                 }
+
                 if (w_value == 0)
                         return config_buf(c, speed, cdev->req->buf, type);
                 w_value--;
@@ -328,16 +469,22 @@ static int count_configs(struct usb_composite_dev *cdev, unsigned type)
         struct usb_configuration        *c;
         unsigned                        count = 0;
         int                             hs = 0;
+        int                             ss = 0;
 
         if (gadget_is_dualspeed(gadget)) {
                 if (gadget->speed == USB_SPEED_HIGH)
                         hs = 1;
+                if (gadget->speed == USB_SPEED_SUPER)
+                        ss = 1;
                 if (type == USB_DT_DEVICE_QUALIFIER)
                         hs = !hs;
         }
         list_for_each_entry(c, &cdev->configs, list) {
                 /* ignore configs that won't work at this speed */
-                if (hs) {
+                if (ss) {
+                        if (!c->superspeed)
+                                continue;
+                } else if (hs) {
                         if (!c->highspeed)
                                 continue;
                 } else {
@@ -349,6 +496,71 @@ static int count_configs(struct usb_composite_dev *cdev, unsigned type)
         return count;
 }
 
+/**
+ * bos_desc() - prepares the BOS descriptor.
+ * @cdev: pointer to usb_composite device to generate the bos
+ *      descriptor for
+ *
+ * This function generates the BOS (Binary Device Object)
+ * descriptor and its device capabilities descriptors. The BOS
+ * descriptor should be supported by a SuperSpeed device.
+ */
+static int bos_desc(struct usb_composite_dev *cdev)
+{
+        struct usb_ext_cap_descriptor   *usb_ext;
+        struct usb_ss_cap_descriptor    *ss_cap;
+        struct usb_dcd_config_params    dcd_config_params;
+        struct usb_bos_descriptor       *bos = cdev->req->buf;
+
+        bos->bLength = USB_DT_BOS_SIZE;
+        bos->bDescriptorType = USB_DT_BOS;
+
+        bos->wTotalLength = cpu_to_le16(USB_DT_BOS_SIZE);
+        bos->bNumDeviceCaps = 0;
+
+        /*
+         * A SuperSpeed device shall include the USB2.0 extension descriptor
+         * and shall support LPM when operating in USB2.0 HS mode.
+         */
+        usb_ext = cdev->req->buf + le16_to_cpu(bos->wTotalLength);
+        bos->bNumDeviceCaps++;
+        le16_add_cpu(&bos->wTotalLength, USB_DT_USB_EXT_CAP_SIZE);
+        usb_ext->bLength = USB_DT_USB_EXT_CAP_SIZE;
+        usb_ext->bDescriptorType = USB_DT_DEVICE_CAPABILITY;
+        usb_ext->bDevCapabilityType = USB_CAP_TYPE_EXT;
+        usb_ext->bmAttributes = cpu_to_le32(USB_LPM_SUPPORT);
+
+        /*
+         * The Superspeed USB Capability descriptor shall be implemented by all
+         * SuperSpeed devices.
+         */
+        ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength);
+        bos->bNumDeviceCaps++;
+        le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE);
+        ss_cap->bLength = USB_DT_USB_SS_CAP_SIZE;
+        ss_cap->bDescriptorType = USB_DT_DEVICE_CAPABILITY;
+        ss_cap->bDevCapabilityType = USB_SS_CAP_TYPE;
+        ss_cap->bmAttributes = 0; /* LTM is not supported yet */
+        ss_cap->wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION |
+                                USB_FULL_SPEED_OPERATION |
+                                USB_HIGH_SPEED_OPERATION |
+                                USB_5GBPS_OPERATION);
+        ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION;
+
+        /* Get Controller configuration */
+        if (cdev->gadget->ops->get_config_params)
+                cdev->gadget->ops->get_config_params(&dcd_config_params);
+        else {
+                dcd_config_params.bU1devExitLat = USB_DEFULT_U1_DEV_EXIT_LAT;
+                dcd_config_params.bU2DevExitLat =
+                        cpu_to_le16(USB_DEFULT_U2_DEV_EXIT_LAT);
+        }
+        ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat;
+        ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat;
+
+        return le16_to_cpu(bos->wTotalLength);
+}
+
 static void device_qual(struct usb_composite_dev *cdev)
 {
         struct usb_qualifier_descriptor *qual = cdev->req->buf;
@@ -361,7 +573,7 @@ static void device_qual(struct usb_composite_dev *cdev)
         qual->bDeviceSubClass = cdev->desc.bDeviceSubClass;
         qual->bDeviceProtocol = cdev->desc.bDeviceProtocol;
         /* ASSUME same EP0 fifo size at both speeds */
-        qual->bMaxPacketSize0 = cdev->desc.bMaxPacketSize0;
+        qual->bMaxPacketSize0 = cdev->gadget->ep0->maxpacket;
         qual->bNumConfigurations = count_configs(cdev, USB_DT_DEVICE_QUALIFIER);
         qual->bRESERVED = 0;
 }
@@ -392,28 +604,46 @@ static int set_config(struct usb_composite_dev *cdev,
         unsigned                power = gadget_is_otg(gadget) ? 8 : 100;
         int                     tmp;
 
-        if (cdev->config)
-                reset_config(cdev);
-
         if (number) {
                 list_for_each_entry(c, &cdev->configs, list) {
                         if (c->bConfigurationValue == number) {
+                                /*
+                                 * We disable the FDs of the previous
+                                 * configuration only if the new configuration
+                                 * is a valid one
+                                 */
+                                if (cdev->config)
+                                        reset_config(cdev);
                                 result = 0;
                                 break;
                         }
                 }
                 if (result < 0)
                         goto done;
-        } else
+        } else { /* Zero configuration value - need to reset the config */
+                if (cdev->config)
+                        reset_config(cdev);
                 result = 0;
+        }
 
         INFO(cdev, "%s speed config #%d: %s\n",
                 ({ char *speed;
                 switch (gadget->speed) {
-                case USB_SPEED_LOW:     speed = "low"; break;
-                case USB_SPEED_FULL:    speed = "full"; break;
-                case USB_SPEED_HIGH:    speed = "high"; break;
-                default:                speed = "?"; break;
+                case USB_SPEED_LOW:
+                        speed = "low";
+                        break;
+                case USB_SPEED_FULL:
+                        speed = "full";
+                        break;
+                case USB_SPEED_HIGH:
+                        speed = "high";
+                        break;
+                case USB_SPEED_SUPER:
+                        speed = "super";
+                        break;
+                default:
+                        speed = "?";
+                        break;
                 } ; speed; }), number, c ? c->label : "unconfigured");
 
         if (!c)
@@ -435,10 +665,16 @@ static int set_config(struct usb_composite_dev *cdev,
                  * function's setup callback instead of the current
                  * configuration's setup callback.
                  */
-                if (gadget->speed == USB_SPEED_HIGH)
+                switch (gadget->speed) {
+                case USB_SPEED_SUPER:
+                        descriptors = f->ss_descriptors;
+                        break;
+                case USB_SPEED_HIGH:
                         descriptors = f->hs_descriptors;
-                else
+                        break;
+                default:
                         descriptors = f->descriptors;
+                }
 
                 for (; *descriptors; ++descriptors) {
                         struct usb_endpoint_descriptor *ep;
@@ -531,8 +767,9 @@ int usb_add_config(struct usb_composite_dev *cdev,
         } else {
                 unsigned        i;
 
-                DBG(cdev, "cfg %d/%p speeds:%s%s\n",
+                DBG(cdev, "cfg %d/%p speeds:%s%s%s\n",
                         config->bConfigurationValue, config,
+                        config->superspeed ? " super" : "",
                         config->highspeed ? " high" : "",
                         config->fullspeed
                                 ? (gadget_is_dualspeed(cdev->gadget)
@@ -811,6 +1048,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
         struct usb_composite_dev        *cdev = get_gadget_data(gadget);
         struct usb_request              *req = cdev->req;
         int                             value = -EOPNOTSUPP;
+        int                             status = 0;
         u16                             w_index = le16_to_cpu(ctrl->wIndex);
         u8                              intf = w_index & 0xFF;
         u16                             w_value = le16_to_cpu(ctrl->wValue);
@@ -838,18 +1076,29 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                 case USB_DT_DEVICE:
                         cdev->desc.bNumConfigurations =
                                 count_configs(cdev, USB_DT_DEVICE);
+                        cdev->desc.bMaxPacketSize0 =
+                                cdev->gadget->ep0->maxpacket;
+                        if (gadget_is_superspeed(gadget)) {
+                                if (gadget->speed >= USB_SPEED_SUPER)
+                                        cdev->desc.bcdUSB = cpu_to_le16(0x0300);
+                                else
+                                        cdev->desc.bcdUSB = cpu_to_le16(0x0210);
+                        }
+
                         value = min(w_length, (u16) sizeof cdev->desc);
                         memcpy(req->buf, &cdev->desc, value);
                         break;
                 case USB_DT_DEVICE_QUALIFIER:
-                        if (!gadget_is_dualspeed(gadget))
+                        if (!gadget_is_dualspeed(gadget) ||
+                            gadget->speed >= USB_SPEED_SUPER)
                                 break;
                         device_qual(cdev);
                         value = min_t(int, w_length,
                                 sizeof(struct usb_qualifier_descriptor));
                         break;
                 case USB_DT_OTHER_SPEED_CONFIG:
-                        if (!gadget_is_dualspeed(gadget))
+                        if (!gadget_is_dualspeed(gadget) ||
+                            gadget->speed >= USB_SPEED_SUPER)
                                 break;
                         /* FALLTHROUGH */
                 case USB_DT_CONFIG:
@@ -863,6 +1112,12 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                         if (value >= 0)
                                 value = min(w_length, (u16) value);
                         break;
+                case USB_DT_BOS:
+                        if (gadget_is_superspeed(gadget)) {
+                                value = bos_desc(cdev);
+                                value = min(w_length, (u16) value);
+                        }
+                        break;
                 }
                 break;
 
@@ -930,6 +1185,61 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                 *((u8 *)req->buf) = value;
                 value = min(w_length, (u16) 1);
                 break;
+
+        /*
+         * USB 3.0 additions:
+         * Function driver should handle get_status request. If such cb
+         * wasn't supplied we respond with default value = 0
+         * Note: function driver should supply such cb only for the first
+         * interface of the function
+         */
+        case USB_REQ_GET_STATUS:
+                if (!gadget_is_superspeed(gadget))
+                        goto unknown;
+                if (ctrl->bRequestType != (USB_DIR_IN | USB_RECIP_INTERFACE))
+                        goto unknown;
+                value = 2;      /* This is the length of the get_status reply */
+                put_unaligned_le16(0, req->buf);
+                if (!cdev->config || intf >= MAX_CONFIG_INTERFACES)
+                        break;
+                f = cdev->config->interface[intf];
+                if (!f)
+                        break;
+                status = f->get_status ? f->get_status(f) : 0;
+                if (status < 0)
+                        break;
+                put_unaligned_le16(status & 0x0000ffff, req->buf);
+                break;
+        /*
+         * Function drivers should handle SetFeature/ClearFeature
+         * (FUNCTION_SUSPEND) request. function_suspend cb should be supplied
+         * only for the first interface of the function
+         */
+        case USB_REQ_CLEAR_FEATURE:
+        case USB_REQ_SET_FEATURE:
+                if (!gadget_is_superspeed(gadget))
+                        goto unknown;
+                if (ctrl->bRequestType != (USB_DIR_OUT | USB_RECIP_INTERFACE))
+                        goto unknown;
+                switch (w_value) {
+                case USB_INTRF_FUNC_SUSPEND:
+                        if (!cdev->config || intf >= MAX_CONFIG_INTERFACES)
+                                break;
+                        f = cdev->config->interface[intf];
+                        if (!f)
+                                break;
+                        value = 0;
+                        if (f->func_suspend)
+                                value = f->func_suspend(f, w_index >> 8);
+                        if (value < 0) {
+                                ERROR(cdev,
+                                      "func_suspend() returned error %d\n",
+                                      value);
+                                value = 0;
+                        }
+                        break;
+                }
+                break;
         default:
 unknown:
                 VDBG(cdev,
@@ -1140,7 +1450,6 @@ static int composite_bind(struct usb_gadget *gadget)
                 goto fail;
 
         cdev->desc = *composite->dev;
-        cdev->desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
 
         /* standardized runtime overrides for device ID data */
         if (idVendor)
@@ -1247,7 +1556,11 @@ composite_resume(struct usb_gadget *gadget)
 /*-------------------------------------------------------------------------*/
 
 static struct usb_gadget_driver composite_driver = {
+#ifdef CONFIG_USB_GADGET_SUPERSPEED
+        .speed          = USB_SPEED_SUPER,
+#else
         .speed          = USB_SPEED_HIGH,
+#endif
 
         .unbind         = composite_unbind,
 
@@ -1293,6 +1606,8 @@ int usb_composite_probe(struct usb_composite_driver *driver,
                 driver->iProduct = driver->name;
         composite_driver.function =  (char *) driver->name;
         composite_driver.driver.name = driver->name;
+        composite_driver.speed = min((u8)composite_driver.speed,
+                                     (u8)driver->max_speed);
         composite = driver;
         composite_gadget_bind = bind;
 
diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index 09084fd646ab..b2c001334876 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -165,28 +165,3 @@ usb_copy_descriptors(struct usb_descriptor_header **src)
         return ret;
 }
 
-/**
- * usb_find_endpoint - find a copy of an endpoint descriptor
- * @src: original vector of descriptors
- * @copy: copy of @src
- * @match: endpoint descriptor found in @src
- *
- * This returns the copy of the @match descriptor made for @copy.  Its
- * intended use is to help remembering the endpoint descriptor to use
- * when enabling a given endpoint.
- */
-struct usb_endpoint_descriptor *
-usb_find_endpoint(
-        struct usb_descriptor_header **src,
-        struct usb_descriptor_header **copy,
-        struct usb_endpoint_descriptor *match
-)
-{
-        while (*src) {
-                if (*src == (void *) match)
-                        return (void *)*copy;
-                src++;
-                copy++;
-        }
-        return NULL;
-}
diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c
index dbe92ee88477..8beefdd36787 100644
--- a/drivers/usb/gadget/dbgp.c
+++ b/drivers/usb/gadget/dbgp.c
@@ -173,7 +173,9 @@ fail_1:
 
 static int __enable_ep(struct usb_ep *ep, struct usb_endpoint_descriptor *desc)
 {
-        int err = usb_ep_enable(ep, desc);
+        int err;
+        ep->desc = desc;
+        err = usb_ep_enable(ep);
         ep->driver_data = dbgp.gadget;
         return err;
 }
@@ -268,8 +270,8 @@ static int __init dbgp_configure_endpoints(struct usb_gadget *gadget)
         dbgp.serial->in = dbgp.i_ep;
         dbgp.serial->out = dbgp.o_ep;
 
-        dbgp.serial->in_desc = &i_desc;
-        dbgp.serial->out_desc = &o_desc;
+        dbgp.serial->in->desc = &i_desc;
+        dbgp.serial->out->desc = &o_desc;
 
         if (gserial_setup(gadget, 1) < 0) {
                 stp = 3;
@@ -312,7 +314,6 @@ static int __init dbgp_bind(struct usb_gadget *gadget)
 
         dbgp.req->length = DBGP_REQ_EP0_LEN;
         gadget->ep0->driver_data = gadget;
-        device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
 
 #ifdef CONFIG_USB_G_DBGP_SERIAL
         dbgp.serial = kzalloc(sizeof(struct gserial), GFP_KERNEL);
@@ -363,6 +364,7 @@ static int dbgp_setup(struct usb_gadget *gadget,
                         dev_dbg(&dbgp.gadget->dev, "setup: desc device\n");
                         len = sizeof device_desc;
                         data = &device_desc;
+                        device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
                         break;
                 case USB_DT_DEBUG:
                         dev_dbg(&dbgp.gadget->dev, "setup: desc debug\n");
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index d3dcabc1a5fc..e755a9d267fc 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -70,6 +70,19 @@ MODULE_DESCRIPTION (DRIVER_DESC);
 MODULE_AUTHOR ("David Brownell");
 MODULE_LICENSE ("GPL");
 
+struct dummy_hcd_module_parameters {
+        bool is_super_speed;
+        bool is_high_speed;
+};
+
+static struct dummy_hcd_module_parameters mod_data = {
+        .is_super_speed = false,
+        .is_high_speed = true,
+};
+module_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO);
+MODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection");
+module_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO);
+MODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection");
 /*-------------------------------------------------------------------------*/
 
 /* gadget side driver data structres */
@@ -152,6 +165,22 @@ enum dummy_rh_state {
         DUMMY_RH_RUNNING
 };
 
+struct dummy_hcd {
+        struct dummy                    *dum;
+        enum dummy_rh_state             rh_state;
+        struct timer_list               timer;
+        u32                             port_status;
+        u32                             old_status;
+        unsigned long                   re_timeout;
+
+        struct usb_device               *udev;
+        struct list_head                urbp_list;
+
+        unsigned                        active:1;
+        unsigned                        old_active:1;
+        unsigned                        resuming:1;
+};
+
 struct dummy {
         spinlock_t                      lock;
 
@@ -167,36 +196,27 @@ struct dummy {
         u16                             devstatus;
         unsigned                        udc_suspended:1;
         unsigned                        pullup:1;
-        unsigned                        active:1;
-        unsigned                        old_active:1;
 
         /*
          * MASTER/HOST side support
          */
-        enum dummy_rh_state             rh_state;
-        struct timer_list               timer;
-        u32                             port_status;
-        u32                             old_status;
-        unsigned                        resuming:1;
-        unsigned long                   re_timeout;
-
-        struct usb_device               *udev;
-        struct list_head                urbp_list;
+        struct dummy_hcd                *hs_hcd;
+        struct dummy_hcd                *ss_hcd;
 };
 
-static inline struct dummy *hcd_to_dummy (struct usb_hcd *hcd)
+static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd)
 {
-        return (struct dummy *) (hcd->hcd_priv);
+        return (struct dummy_hcd *) (hcd->hcd_priv);
 }
 
-static inline struct usb_hcd *dummy_to_hcd (struct dummy *dum)
+static inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum)
 {
         return container_of((void *) dum, struct usb_hcd, hcd_priv);
 }
 
-static inline struct device *dummy_dev (struct dummy *dum)
+static inline struct device *dummy_dev(struct dummy_hcd *dum)
 {
-        return dummy_to_hcd(dum)->self.controller;
+        return dummy_hcd_to_hcd(dum)->self.controller;
 }
 
 static inline struct device *udc_dev (struct dummy *dum)
@@ -209,9 +229,13 @@ static inline struct dummy *ep_to_dummy (struct dummy_ep *ep)
         return container_of (ep->gadget, struct dummy, gadget);
 }
 
-static inline struct dummy *gadget_to_dummy (struct usb_gadget *gadget)
+static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget)
 {
-        return container_of (gadget, struct dummy, gadget);
+        struct dummy *dum = container_of(gadget, struct dummy, gadget);
+        if (dum->gadget.speed == USB_SPEED_SUPER)
+                return dum->ss_hcd;
+        else
+                return dum->hs_hcd;
 }
 
 static inline struct dummy *gadget_dev_to_dummy (struct device *dev)
@@ -219,7 +243,7 @@ static inline struct dummy *gadget_dev_to_dummy (struct device *dev)
         return container_of (dev, struct dummy, gadget.dev);
 }
 
-static struct dummy                     *the_controller;
+static struct dummy                     the_controller;
 
 /*-------------------------------------------------------------------------*/
 
@@ -259,61 +283,122 @@ stop_activity (struct dummy *dum)
         /* driver now does any non-usb quiescing necessary */
 }
 
-/* caller must hold lock */
-static void
-set_link_state (struct dummy *dum)
-{
-        dum->active = 0;
-        if ((dum->port_status & USB_PORT_STAT_POWER) == 0)
-                dum->port_status = 0;
-
-        /* UDC suspend must cause a disconnect */
-        else if (!dum->pullup || dum->udc_suspended) {
-                dum->port_status &= ~(USB_PORT_STAT_CONNECTION |
-                                        USB_PORT_STAT_ENABLE |
-                                        USB_PORT_STAT_LOW_SPEED |
-                                        USB_PORT_STAT_HIGH_SPEED |
-                                        USB_PORT_STAT_SUSPEND);
-                if ((dum->old_status & USB_PORT_STAT_CONNECTION) != 0)
-                        dum->port_status |= (USB_PORT_STAT_C_CONNECTION << 16);
+/**
+ * set_link_state_by_speed() - Sets the current state of the link according to
+ *      the hcd speed
+ * @dum_hcd: pointer to the dummy_hcd structure to update the link state for
+ *
+ * This function updates the port_status according to the link state and the
+ * speed of the hcd.
+ */
+static void set_link_state_by_speed(struct dummy_hcd *dum_hcd)
+{
+        struct dummy *dum = dum_hcd->dum;
+
+        if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) {
+                if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) {
+                        dum_hcd->port_status = 0;
+                } else if (!dum->pullup || dum->udc_suspended) {
+                        /* UDC suspend must cause a disconnect */
+                        dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION |
+                                                USB_PORT_STAT_ENABLE);
+                        if ((dum_hcd->old_status &
+                             USB_PORT_STAT_CONNECTION) != 0)
+                                dum_hcd->port_status |=
+                                        (USB_PORT_STAT_C_CONNECTION << 16);
+                } else {
+                        /* device is connected and not suspended */
+                        dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION |
+                                                 USB_PORT_STAT_SPEED_5GBPS) ;
+                        if ((dum_hcd->old_status &
+                             USB_PORT_STAT_CONNECTION) == 0)
+                                dum_hcd->port_status |=
+                                        (USB_PORT_STAT_C_CONNECTION << 16);
+                        if ((dum_hcd->port_status &
+                             USB_PORT_STAT_ENABLE) == 1 &&
+                                (dum_hcd->port_status &
+                                 USB_SS_PORT_LS_U0) == 1 &&
+                                dum_hcd->rh_state != DUMMY_RH_SUSPENDED)
+                                dum_hcd->active = 1;
+                }
         } else {
-                dum->port_status |= USB_PORT_STAT_CONNECTION;
-                if ((dum->old_status & USB_PORT_STAT_CONNECTION) == 0)
-                        dum->port_status |= (USB_PORT_STAT_C_CONNECTION << 16);
-                if ((dum->port_status & USB_PORT_STAT_ENABLE) == 0)
-                        dum->port_status &= ~USB_PORT_STAT_SUSPEND;
-                else if ((dum->port_status & USB_PORT_STAT_SUSPEND) == 0 &&
-                                dum->rh_state != DUMMY_RH_SUSPENDED)
-                        dum->active = 1;
+                if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) {
+                        dum_hcd->port_status = 0;
+                } else if (!dum->pullup || dum->udc_suspended) {
+                        /* UDC suspend must cause a disconnect */
+                        dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION |
+                                                USB_PORT_STAT_ENABLE |
+                                                USB_PORT_STAT_LOW_SPEED |
+                                                USB_PORT_STAT_HIGH_SPEED |
+                                                USB_PORT_STAT_SUSPEND);
+                        if ((dum_hcd->old_status &
+                             USB_PORT_STAT_CONNECTION) != 0)
+                                dum_hcd->port_status |=
+                                        (USB_PORT_STAT_C_CONNECTION << 16);
+                } else {
+                        dum_hcd->port_status |= USB_PORT_STAT_CONNECTION;
+                        if ((dum_hcd->old_status &
+                             USB_PORT_STAT_CONNECTION) == 0)
+                                dum_hcd->port_status |=
+                                        (USB_PORT_STAT_C_CONNECTION << 16);
+                        if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0)
+                                dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND;
+                        else if ((dum_hcd->port_status &
+                                  USB_PORT_STAT_SUSPEND) == 0 &&
+                                        dum_hcd->rh_state != DUMMY_RH_SUSPENDED)
+                                dum_hcd->active = 1;
+                }
         }
+}
+
+/* caller must hold lock */
+static void set_link_state(struct dummy_hcd *dum_hcd)
+{
+        struct dummy *dum = dum_hcd->dum;
 
-        if ((dum->port_status & USB_PORT_STAT_ENABLE) == 0 || dum->active)
-                dum->resuming = 0;
+        dum_hcd->active = 0;
+        if (dum->pullup)
+                if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 &&
+                     dum->gadget.speed != USB_SPEED_SUPER) ||
+                    (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 &&
+                     dum->gadget.speed == USB_SPEED_SUPER))
+                        return;
 
-        if ((dum->port_status & USB_PORT_STAT_CONNECTION) == 0 ||
-                        (dum->port_status & USB_PORT_STAT_RESET) != 0) {
-                if ((dum->old_status & USB_PORT_STAT_CONNECTION) != 0 &&
-                                (dum->old_status & USB_PORT_STAT_RESET) == 0 &&
-                                dum->driver) {
-                        stop_activity (dum);
-                        spin_unlock (&dum->lock);
-                        dum->driver->disconnect (&dum->gadget);
-                        spin_lock (&dum->lock);
+        set_link_state_by_speed(dum_hcd);
+
+        if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 ||
+             dum_hcd->active)
+                dum_hcd->resuming = 0;
+
+        /* if !connected or reset */
+        if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 ||
+                        (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) {
+                /*
+                 * We're connected and not reset (reset occurred now),
+                 * and driver attached - disconnect!
+                 */
+                if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 &&
+                    (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 &&
+                    dum->driver) {
+                        stop_activity(dum);
+                        spin_unlock(&dum->lock);
+                        dum->driver->disconnect(&dum->gadget);
+                        spin_lock(&dum->lock);
                 }
-        } else if (dum->active != dum->old_active) {
-                if (dum->old_active && dum->driver->suspend) {
-                        spin_unlock (&dum->lock);
-                        dum->driver->suspend (&dum->gadget);
-                        spin_lock (&dum->lock);
-                } else if (!dum->old_active && dum->driver->resume) {
-                        spin_unlock (&dum->lock);
-                        dum->driver->resume (&dum->gadget);
-                        spin_lock (&dum->lock);
+        } else if (dum_hcd->active != dum_hcd->old_active) {
+                if (dum_hcd->old_active && dum->driver->suspend) {
+                        spin_unlock(&dum->lock);
+                        dum->driver->suspend(&dum->gadget);
+                        spin_lock(&dum->lock);
+                } else if (!dum_hcd->old_active &&  dum->driver->resume) {
+                        spin_unlock(&dum->lock);
+                        dum->driver->resume(&dum->gadget);
+                        spin_lock(&dum->lock);
                 }
         }
 
-        dum->old_status = dum->port_status;
-        dum->old_active = dum->active;
+        dum_hcd->old_status = dum_hcd->port_status;
+        dum_hcd->old_active = dum_hcd->active;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -332,6 +417,7 @@ static int
 dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 {
         struct dummy            *dum;
+        struct dummy_hcd        *dum_hcd;
         struct dummy_ep         *ep;
         unsigned                max;
         int                     retval;
@@ -341,9 +427,19 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                         || desc->bDescriptorType != USB_DT_ENDPOINT)
                 return -EINVAL;
         dum = ep_to_dummy (ep);
-        if (!dum->driver || !is_enabled (dum))
+        if (!dum->driver)
+                return -ESHUTDOWN;
+
+        dum_hcd = gadget_to_dummy_hcd(&dum->gadget);
+        if (!is_enabled(dum_hcd))
                 return -ESHUTDOWN;
-        max = le16_to_cpu(desc->wMaxPacketSize) & 0x3ff;
+
+        /*
+         * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the
+         * maximum packet size.
+         * For SS devices the wMaxPacketSize is limited by 1024.
+         */
+        max = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
 
         /* drivers must not request bad settings, since lower levels
          * (hardware or its drivers) may not check.  some endpoints
@@ -361,6 +457,10 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                         goto done;
                 }
                 switch (dum->gadget.speed) {
+                case USB_SPEED_SUPER:
+                        if (max == 1024)
+                                break;
+                        goto done;
                 case USB_SPEED_HIGH:
                         if (max == 512)
                                 break;
@@ -379,6 +479,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                         goto done;
                 /* real hardware might not handle all packet sizes */
                 switch (dum->gadget.speed) {
+                case USB_SPEED_SUPER:
                 case USB_SPEED_HIGH:
                         if (max <= 1024)
                                 break;
@@ -399,6 +500,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                         goto done;
                 /* real hardware might not handle all packet sizes */
                 switch (dum->gadget.speed) {
+                case USB_SPEED_SUPER:
                 case USB_SPEED_HIGH:
                         if (max <= 1024)
                                 break;
@@ -425,10 +527,18 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                 (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
                 ({ char *val;
                  switch (desc->bmAttributes & 0x03) {
-                 case USB_ENDPOINT_XFER_BULK: val = "bulk"; break;
-                 case USB_ENDPOINT_XFER_ISOC: val = "iso"; break;
-                 case USB_ENDPOINT_XFER_INT: val = "intr"; break;
-                 default: val = "ctrl"; break;
+                 case USB_ENDPOINT_XFER_BULK:
+                         val = "bulk";
+                         break;
+                 case USB_ENDPOINT_XFER_ISOC:
+                         val = "iso";
+                         break;
+                 case USB_ENDPOINT_XFER_INT:
+                         val = "intr";
+                         break;
+                 default:
+                         val = "ctrl";
+                         break;
                  }; val; }),
                 max);
 
@@ -507,6 +617,7 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req,
         struct dummy_ep         *ep;
         struct dummy_request    *req;
         struct dummy            *dum;
+        struct dummy_hcd        *dum_hcd;
         unsigned long           flags;
 
         req = usb_request_to_dummy_request (_req);
@@ -518,7 +629,8 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req,
                 return -EINVAL;
 
         dum = ep_to_dummy (ep);
-        if (!dum->driver || !is_enabled (dum))
+        dum_hcd = gadget_to_dummy_hcd(&dum->gadget);
+        if (!dum->driver || !is_enabled(dum_hcd))
                 return -ESHUTDOWN;
 
 #if 0
@@ -662,24 +774,24 @@ static int dummy_g_get_frame (struct usb_gadget *_gadget)
 
 static int dummy_wakeup (struct usb_gadget *_gadget)
 {
-        struct dummy    *dum;
+        struct dummy_hcd *dum_hcd;
 
-        dum = gadget_to_dummy (_gadget);
-        if (!(dum->devstatus &  ( (1 << USB_DEVICE_B_HNP_ENABLE)
+        dum_hcd = gadget_to_dummy_hcd(_gadget);
+        if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE)
                                 | (1 << USB_DEVICE_REMOTE_WAKEUP))))
                 return -EINVAL;
-        if ((dum->port_status & USB_PORT_STAT_CONNECTION) == 0)
+        if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0)
                 return -ENOLINK;
-        if ((dum->port_status & USB_PORT_STAT_SUSPEND) == 0 &&
-                         dum->rh_state != DUMMY_RH_SUSPENDED)
+        if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 &&
+                         dum_hcd->rh_state != DUMMY_RH_SUSPENDED)
                 return -EIO;
 
         /* FIXME: What if the root hub is suspended but the port isn't? */
 
         /* hub notices our request, issues downstream resume, etc */
-        dum->resuming = 1;
-        dum->re_timeout = jiffies + msecs_to_jiffies(20);
-        mod_timer (&dummy_to_hcd (dum)->rh_timer, dum->re_timeout);
+        dum_hcd->resuming = 1;
+        dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20);
+        mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout);
         return 0;
 }
 
@@ -687,7 +799,7 @@ static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value)
 {
         struct dummy    *dum;
 
-        dum = gadget_to_dummy (_gadget);
+        dum = (gadget_to_dummy_hcd(_gadget))->dum;
         if (value)
                 dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED);
         else
@@ -695,26 +807,68 @@ static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value)
         return 0;
 }
 
+static void dummy_udc_udpate_ep0(struct dummy *dum)
+{
+        u32 i;
+
+        if (dum->gadget.speed == USB_SPEED_SUPER) {
+                for (i = 0; i < DUMMY_ENDPOINTS; i++)
+                        dum->ep[i].ep.max_streams = 0x10;
+                dum->ep[0].ep.maxpacket = 9;
+        } else {
+                for (i = 0; i < DUMMY_ENDPOINTS; i++)
+                        dum->ep[i].ep.max_streams = 0;
+                dum->ep[0].ep.maxpacket = 64;
+        }
+}
+
 static int dummy_pullup (struct usb_gadget *_gadget, int value)
 {
+        struct dummy_hcd *dum_hcd;
         struct dummy    *dum;
         unsigned long   flags;
 
-        dum = gadget_to_dummy (_gadget);
+        dum = gadget_dev_to_dummy(&_gadget->dev);
+
+        if (value && dum->driver) {
+                if (mod_data.is_super_speed)
+                        dum->gadget.speed = dum->driver->speed;
+                else if (mod_data.is_high_speed)
+                        dum->gadget.speed = min_t(u8, USB_SPEED_HIGH,
+                                        dum->driver->speed);
+                else
+                        dum->gadget.speed = USB_SPEED_FULL;
+                dummy_udc_udpate_ep0(dum);
+
+                if (dum->gadget.speed < dum->driver->speed)
+                        dev_dbg(udc_dev(dum), "This device can perform faster"
+                                        " if you connect it to a %s port...\n",
+                                        (dum->driver->speed == USB_SPEED_SUPER ?
+                                         "SuperSpeed" : "HighSpeed"));
+        }
+        dum_hcd = gadget_to_dummy_hcd(_gadget);
+
         spin_lock_irqsave (&dum->lock, flags);
         dum->pullup = (value != 0);
-        set_link_state (dum);
+        set_link_state(dum_hcd);
         spin_unlock_irqrestore (&dum->lock, flags);
 
-        usb_hcd_poll_rh_status (dummy_to_hcd (dum));
+        usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd));
         return 0;
 }
 
+static int dummy_udc_start(struct usb_gadget *g,
+                struct usb_gadget_driver *driver);
+static int dummy_udc_stop(struct usb_gadget *g,
+                struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops dummy_ops = {
         .get_frame      = dummy_g_get_frame,
         .wakeup         = dummy_wakeup,
         .set_selfpowered = dummy_set_selfpowered,
         .pullup         = dummy_pullup,
+        .udc_start      = dummy_udc_start,
+        .udc_stop       = dummy_udc_stop,
 };
 
 /*-------------------------------------------------------------------------*/
@@ -747,18 +901,13 @@ static DEVICE_ATTR (function, S_IRUGO, show_function, NULL);
  * for each driver that registers:  just add to a big root hub.
  */
 
-int
-usb_gadget_probe_driver(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *))
+static int dummy_udc_start(struct usb_gadget *g,
+                struct usb_gadget_driver *driver)
 {
-        struct dummy    *dum = the_controller;
-        int             retval, i;
+        struct dummy_hcd        *dum_hcd = gadget_to_dummy_hcd(g);
+        struct dummy            *dum = dum_hcd->dum;
 
-        if (!dum)
-                return -EINVAL;
-        if (dum->driver)
-                return -EBUSY;
-        if (!bind || !driver->setup || driver->speed == USB_SPEED_UNKNOWN)
+        if (driver->speed == USB_SPEED_UNKNOWN)
                 return -EINVAL;
 
         /*
@@ -768,121 +917,77 @@ usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 
         dum->devstatus = 0;
 
-        INIT_LIST_HEAD (&dum->gadget.ep_list);
-        for (i = 0; i < DUMMY_ENDPOINTS; i++) {
-                struct dummy_ep *ep = &dum->ep [i];
-
-                if (!ep_name [i])
-                        break;
-                ep->ep.name = ep_name [i];
-                ep->ep.ops = &dummy_ep_ops;
-                list_add_tail (&ep->ep.ep_list, &dum->gadget.ep_list);
-                ep->halted = ep->wedged = ep->already_seen =
-                                ep->setup_stage = 0;
-                ep->ep.maxpacket = ~0;
-                ep->last_io = jiffies;
-                ep->gadget = &dum->gadget;
-                ep->desc = NULL;
-                INIT_LIST_HEAD (&ep->queue);
-        }
-
-        dum->gadget.ep0 = &dum->ep [0].ep;
-        dum->ep [0].ep.maxpacket = 64;
-        list_del_init (&dum->ep [0].ep.ep_list);
-        INIT_LIST_HEAD(&dum->fifo_req.queue);
-
-        driver->driver.bus = NULL;
         dum->driver = driver;
-        dum->gadget.dev.driver = &driver->driver;
         dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n",
                         driver->driver.name);
-        retval = bind(&dum->gadget);
-        if (retval) {
-                dum->driver = NULL;
-                dum->gadget.dev.driver = NULL;
-                return retval;
-        }
-
-        /* khubd will enumerate this in a while */
-        spin_lock_irq (&dum->lock);
-        dum->pullup = 1;
-        set_link_state (dum);
-        spin_unlock_irq (&dum->lock);
-
-        usb_hcd_poll_rh_status (dummy_to_hcd (dum));
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int
-usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
+static int dummy_udc_stop(struct usb_gadget *g,
+                struct usb_gadget_driver *driver)
 {
-        struct dummy    *dum = the_controller;
-        unsigned long   flags;
-
-        if (!dum)
-                return -ENODEV;
-        if (!driver || driver != dum->driver || !driver->unbind)
-                return -EINVAL;
+        struct dummy_hcd        *dum_hcd = gadget_to_dummy_hcd(g);
+        struct dummy            *dum = dum_hcd->dum;
 
         dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n",
                         driver->driver.name);
 
-        spin_lock_irqsave (&dum->lock, flags);
-        dum->pullup = 0;
-        set_link_state (dum);
-        spin_unlock_irqrestore (&dum->lock, flags);
-
-        driver->unbind (&dum->gadget);
-        dum->gadget.dev.driver = NULL;
         dum->driver = NULL;
 
-        spin_lock_irqsave (&dum->lock, flags);
-        dum->pullup = 0;
-        set_link_state (dum);
-        spin_unlock_irqrestore (&dum->lock, flags);
-
-        usb_hcd_poll_rh_status (dummy_to_hcd (dum));
+        dummy_pullup(&dum->gadget, 0);
         return 0;
 }
-EXPORT_SYMBOL (usb_gadget_unregister_driver);
 
 #undef is_enabled
 
-/* just declare this in any driver that really need it */
-extern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode);
-
-int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode)
-{
-        return -ENOSYS;
-}
-EXPORT_SYMBOL (net2280_set_fifo_mode);
-
-
 /* The gadget structure is stored inside the hcd structure and will be
  * released along with it. */
 static void
 dummy_gadget_release (struct device *dev)
 {
-        struct dummy    *dum = gadget_dev_to_dummy (dev);
+        return;
+}
+
+static void init_dummy_udc_hw(struct dummy *dum)
+{
+        int i;
+
+        INIT_LIST_HEAD(&dum->gadget.ep_list);
+        for (i = 0; i < DUMMY_ENDPOINTS; i++) {
+                struct dummy_ep *ep = &dum->ep[i];
+
+                if (!ep_name[i])
+                        break;
+                ep->ep.name = ep_name[i];
+                ep->ep.ops = &dummy_ep_ops;
+                list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list);
+                ep->halted = ep->wedged = ep->already_seen =
+                                ep->setup_stage = 0;
+                ep->ep.maxpacket = ~0;
+                ep->last_io = jiffies;
+                ep->gadget = &dum->gadget;
+                ep->desc = NULL;
+                INIT_LIST_HEAD(&ep->queue);
+        }
+
+        dum->gadget.ep0 = &dum->ep[0].ep;
+        list_del_init(&dum->ep[0].ep.ep_list);
+        INIT_LIST_HEAD(&dum->fifo_req.queue);
 
-        usb_put_hcd (dummy_to_hcd (dum));
+#ifdef CONFIG_USB_OTG
+        dum->gadget.is_otg = 1;
+#endif
 }
 
 static int dummy_udc_probe (struct platform_device *pdev)
 {
-        struct dummy    *dum = the_controller;
+        struct dummy    *dum = &the_controller;
         int             rc;
 
-        usb_get_hcd(dummy_to_hcd(dum));
-
         dum->gadget.name = gadget_name;
         dum->gadget.ops = &dummy_ops;
         dum->gadget.is_dualspeed = 1;
 
-        /* maybe claim OTG support, though we won't complete HNP */
-        dum->gadget.is_otg = (dummy_to_hcd(dum)->self.otg_port != 0);
-
         dev_set_name(&dum->gadget.dev, "gadget");
         dum->gadget.dev.parent = &pdev->dev;
         dum->gadget.dev.release = dummy_gadget_release;
@@ -892,11 +997,22 @@ static int dummy_udc_probe (struct platform_device *pdev)
                 return rc;
         }
 
+        init_dummy_udc_hw(dum);
+
+        rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget);
+        if (rc < 0)
+                goto err_udc;
+
         rc = device_create_file (&dum->gadget.dev, &dev_attr_function);
         if (rc < 0)
-                device_unregister (&dum->gadget.dev);
-        else
-                platform_set_drvdata(pdev, dum);
+                goto err_dev;
+        platform_set_drvdata(pdev, dum);
+        return rc;
+
+err_dev:
+        usb_del_gadget_udc(&dum->gadget);
+err_udc:
+        device_unregister(&dum->gadget.dev);
         return rc;
 }
 
@@ -904,37 +1020,41 @@ static int dummy_udc_remove (struct platform_device *pdev)
 {
         struct dummy    *dum = platform_get_drvdata (pdev);
 
+        usb_del_gadget_udc(&dum->gadget);
         platform_set_drvdata (pdev, NULL);
         device_remove_file (&dum->gadget.dev, &dev_attr_function);
         device_unregister (&dum->gadget.dev);
         return 0;
 }
 
-static int dummy_udc_suspend (struct platform_device *pdev, pm_message_t state)
+static void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd,
+                int suspend)
 {
-        struct dummy    *dum = platform_get_drvdata(pdev);
+        spin_lock_irq(&dum->lock);
+        dum->udc_suspended = suspend;
+        set_link_state(dum_hcd);
+        spin_unlock_irq(&dum->lock);
+}
 
-        dev_dbg (&pdev->dev, "%s\n", __func__);
-        spin_lock_irq (&dum->lock);
-        dum->udc_suspended = 1;
-        set_link_state (dum);
-        spin_unlock_irq (&dum->lock);
+static int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        struct dummy            *dum = platform_get_drvdata(pdev);
+        struct dummy_hcd        *dum_hcd = gadget_to_dummy_hcd(&dum->gadget);
 
-        usb_hcd_poll_rh_status (dummy_to_hcd (dum));
+        dev_dbg(&pdev->dev, "%s\n", __func__);
+        dummy_udc_pm(dum, dum_hcd, 1);
+        usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd));
         return 0;
 }
 
-static int dummy_udc_resume (struct platform_device *pdev)
+static int dummy_udc_resume(struct platform_device *pdev)
 {
-        struct dummy    *dum = platform_get_drvdata(pdev);
+        struct dummy            *dum = platform_get_drvdata(pdev);
+        struct dummy_hcd        *dum_hcd = gadget_to_dummy_hcd(&dum->gadget);
 
-        dev_dbg (&pdev->dev, "%s\n", __func__);
-        spin_lock_irq (&dum->lock);
-        dum->udc_suspended = 0;
-        set_link_state (dum);
-        spin_unlock_irq (&dum->lock);
-
-        usb_hcd_poll_rh_status (dummy_to_hcd (dum));
+        dev_dbg(&pdev->dev, "%s\n", __func__);
+        dummy_udc_pm(dum, dum_hcd, 0);
+        usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd));
         return 0;
 }
 
@@ -968,7 +1088,7 @@ static int dummy_urb_enqueue (
         struct urb                      *urb,
         gfp_t                           mem_flags
 ) {
-        struct dummy    *dum;
+        struct dummy_hcd *dum_hcd;
         struct urbp     *urbp;
         unsigned long   flags;
         int             rc;
@@ -981,51 +1101,51 @@ static int dummy_urb_enqueue (
                 return -ENOMEM;
         urbp->urb = urb;
 
-        dum = hcd_to_dummy (hcd);
-        spin_lock_irqsave (&dum->lock, flags);
+        dum_hcd = hcd_to_dummy_hcd(hcd);
+        spin_lock_irqsave(&dum_hcd->dum->lock, flags);
         rc = usb_hcd_link_urb_to_ep(hcd, urb);
         if (rc) {
                 kfree(urbp);
                 goto done;
         }
 
-        if (!dum->udev) {
-                dum->udev = urb->dev;
-                usb_get_dev (dum->udev);
-        } else if (unlikely (dum->udev != urb->dev))
-                dev_err (dummy_dev(dum), "usb_device address has changed!\n");
+        if (!dum_hcd->udev) {
+                dum_hcd->udev = urb->dev;
+                usb_get_dev(dum_hcd->udev);
+        } else if (unlikely(dum_hcd->udev != urb->dev))
+                dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n");
 
-        list_add_tail (&urbp->urbp_list, &dum->urbp_list);
+        list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list);
         urb->hcpriv = urbp;
         if (usb_pipetype (urb->pipe) == PIPE_CONTROL)
                 urb->error_count = 1;           /* mark as a new urb */
 
         /* kick the scheduler, it'll do the rest */
-        if (!timer_pending (&dum->timer))
-                mod_timer (&dum->timer, jiffies + 1);
+        if (!timer_pending(&dum_hcd->timer))
+                mod_timer(&dum_hcd->timer, jiffies + 1);
 
  done:
-        spin_unlock_irqrestore(&dum->lock, flags);
+        spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
         return rc;
 }
 
 static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 {
-        struct dummy    *dum;
+        struct dummy_hcd *dum_hcd;
         unsigned long   flags;
         int             rc;
 
         /* giveback happens automatically in timer callback,
          * so make sure the callback happens */
-        dum = hcd_to_dummy (hcd);
-        spin_lock_irqsave (&dum->lock, flags);
+        dum_hcd = hcd_to_dummy_hcd(hcd);
+        spin_lock_irqsave(&dum_hcd->dum->lock, flags);
 
         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
-        if (!rc && dum->rh_state != DUMMY_RH_RUNNING &&
-                        !list_empty(&dum->urbp_list))
-                mod_timer (&dum->timer, jiffies);
+        if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING &&
+                        !list_empty(&dum_hcd->urbp_list))
+                mod_timer(&dum_hcd->timer, jiffies);
 
-        spin_unlock_irqrestore (&dum->lock, flags);
+        spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
         return rc;
 }
 
@@ -1162,10 +1282,25 @@ static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep)
                 tmp *= 8 /* applies to entire frame */;
                 limit += limit * tmp;
         }
+        if (dum->gadget.speed == USB_SPEED_SUPER) {
+                switch (ep->desc->bmAttributes & 0x03) {
+                case USB_ENDPOINT_XFER_ISOC:
+                        /* Sec. 4.4.8.2 USB3.0 Spec */
+                        limit = 3 * 16 * 1024 * 8;
+                        break;
+                case USB_ENDPOINT_XFER_INT:
+                        /* Sec. 4.4.7.2 USB3.0 Spec */
+                        limit = 3 * 1024 * 8;
+                        break;
+                case USB_ENDPOINT_XFER_BULK:
+                default:
+                        break;
+                }
+        }
         return limit;
 }
 
-#define is_active(dum)  ((dum->port_status & \
+#define is_active(dum_hcd)      ((dum_hcd->port_status & \
                 (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \
                         USB_PORT_STAT_SUSPEND)) \
                 == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE))
@@ -1174,7 +1309,8 @@ static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address)
 {
         int             i;
 
-        if (!is_active (dum))
+        if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ?
+                        dum->ss_hcd : dum->hs_hcd)))
                 return NULL;
         if ((address & ~USB_DIR_IN) == 0)
                 return &dum->ep [0];
@@ -1211,11 +1347,12 @@ static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address)
  *        1 - if the request wasn't handles
  *        error code on error
  */
-static int handle_control_request(struct dummy *dum, struct urb *urb,
+static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb,
                                   struct usb_ctrlrequest *setup,
                                   int *status)
 {
         struct dummy_ep         *ep2;
+        struct dummy            *dum = dum_hcd->dum;
         int                     ret_val = 1;
         unsigned        w_index;
         unsigned        w_value;
@@ -1247,6 +1384,27 @@ static int handle_control_request(struct dummy *dum, struct urb *urb,
                         case USB_DEVICE_A_ALT_HNP_SUPPORT:
                                 dum->gadget.a_alt_hnp_support = 1;
                                 break;
+                        case USB_DEVICE_U1_ENABLE:
+                                if (dummy_hcd_to_hcd(dum_hcd)->speed ==
+                                    HCD_USB3)
+                                        w_value = USB_DEV_STAT_U1_ENABLED;
+                                else
+                                        ret_val = -EOPNOTSUPP;
+                                break;
+                        case USB_DEVICE_U2_ENABLE:
+                                if (dummy_hcd_to_hcd(dum_hcd)->speed ==
+                                    HCD_USB3)
+                                        w_value = USB_DEV_STAT_U2_ENABLED;
+                                else
+                                        ret_val = -EOPNOTSUPP;
+                                break;
+                        case USB_DEVICE_LTM_ENABLE:
+                                if (dummy_hcd_to_hcd(dum_hcd)->speed ==
+                                    HCD_USB3)
+                                        w_value = USB_DEV_STAT_LTM_ENABLED;
+                                else
+                                        ret_val = -EOPNOTSUPP;
+                                break;
                         default:
                                 ret_val = -EOPNOTSUPP;
                         }
@@ -1273,6 +1431,27 @@ static int handle_control_request(struct dummy *dum, struct urb *urb,
                         case USB_DEVICE_REMOTE_WAKEUP:
                                 w_value = USB_DEVICE_REMOTE_WAKEUP;
                                 break;
+                        case USB_DEVICE_U1_ENABLE:
+                                if (dummy_hcd_to_hcd(dum_hcd)->speed ==
+                                    HCD_USB3)
+                                        w_value = USB_DEV_STAT_U1_ENABLED;
+                                else
+                                        ret_val = -EOPNOTSUPP;
+                                break;
+                        case USB_DEVICE_U2_ENABLE:
+                                if (dummy_hcd_to_hcd(dum_hcd)->speed ==
+                                    HCD_USB3)
+                                        w_value = USB_DEV_STAT_U2_ENABLED;
+                                else
+                                        ret_val = -EOPNOTSUPP;
+                                break;
+                        case USB_DEVICE_LTM_ENABLE:
+                                if (dummy_hcd_to_hcd(dum_hcd)->speed ==
+                                    HCD_USB3)
+                                        w_value = USB_DEV_STAT_LTM_ENABLED;
+                                else
+                                        ret_val = -EOPNOTSUPP;
+                                break;
                         default:
                                 ret_val = -EOPNOTSUPP;
                                 break;
@@ -1334,9 +1513,10 @@ static int handle_control_request(struct dummy *dum, struct urb *urb,
 /* drive both sides of the transfers; looks like irq handlers to
  * both drivers except the callbacks aren't in_irq().
  */
-static void dummy_timer (unsigned long _dum)
+static void dummy_timer(unsigned long _dum_hcd)
 {
-        struct dummy            *dum = (struct dummy *) _dum;
+        struct dummy_hcd        *dum_hcd = (struct dummy_hcd *) _dum_hcd;
+        struct dummy            *dum = dum_hcd->dum;
         struct urbp             *urbp, *tmp;
         unsigned long           flags;
         int                     limit, total;
@@ -1353,8 +1533,12 @@ static void dummy_timer (unsigned long _dum)
         case USB_SPEED_HIGH:
                 total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/;
                 break;
+        case USB_SPEED_SUPER:
+                /* Bus speed is 500000 bytes/ms, so use a little less */
+                total = 490000;
+                break;
         default:
-                dev_err (dummy_dev(dum), "bogus device speed\n");
+                dev_err(dummy_dev(dum_hcd), "bogus device speed\n");
                 return;
         }
 
@@ -1363,8 +1547,8 @@ static void dummy_timer (unsigned long _dum)
         /* look at each urb queued by the host side driver */
         spin_lock_irqsave (&dum->lock, flags);
 
-        if (!dum->udev) {
-                dev_err (dummy_dev(dum),
+        if (!dum_hcd->udev) {
+                dev_err(dummy_dev(dum_hcd),
                                 "timer fired with no URBs pending?\n");
                 spin_unlock_irqrestore (&dum->lock, flags);
                 return;
@@ -1377,7 +1561,7 @@ static void dummy_timer (unsigned long _dum)
         }
 
 restart:
-        list_for_each_entry_safe (urbp, tmp, &dum->urbp_list, urbp_list) {
+        list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) {
                 struct urb              *urb;
                 struct dummy_request    *req;
                 u8                      address;
@@ -1388,7 +1572,7 @@ restart:
                 urb = urbp->urb;
                 if (urb->unlinked)
                         goto return_urb;
-                else if (dum->rh_state != DUMMY_RH_RUNNING)
+                else if (dum_hcd->rh_state != DUMMY_RH_RUNNING)
                         continue;
                 type = usb_pipetype (urb->pipe);
 
@@ -1406,7 +1590,7 @@ restart:
                 ep = find_endpoint(dum, address);
                 if (!ep) {
                         /* set_configuration() disagreement */
-                        dev_dbg (dummy_dev(dum),
+                        dev_dbg(dummy_dev(dum_hcd),
                                 "no ep configured for urb %p\n",
                                 urb);
                         status = -EPROTO;
@@ -1422,7 +1606,7 @@ restart:
                 }
                 if (ep->halted && !ep->setup_stage) {
                         /* NOTE: must not be iso! */
-                        dev_dbg (dummy_dev(dum), "ep %s halted, urb %p\n",
+                        dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n",
                                         ep->ep.name, urb);
                         status = -EPIPE;
                         goto return_urb;
@@ -1457,7 +1641,7 @@ restart:
                         ep->setup_stage = 0;
                         ep->halted = 0;
 
-                        value = handle_control_request(dum, urb, &setup,
+                        value = handle_control_request(dum_hcd, urb, &setup,
                                                        &status);
 
                         /* gadget driver handles all other requests.  block
@@ -1527,20 +1711,20 @@ return_urb:
                 if (ep)
                         ep->already_seen = ep->setup_stage = 0;
 
-                usb_hcd_unlink_urb_from_ep(dummy_to_hcd(dum), urb);
+                usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb);
                 spin_unlock (&dum->lock);
-                usb_hcd_giveback_urb(dummy_to_hcd(dum), urb, status);
+                usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status);
                 spin_lock (&dum->lock);
 
                 goto restart;
         }
 
-        if (list_empty (&dum->urbp_list)) {
-                usb_put_dev (dum->udev);
-                dum->udev = NULL;
-        } else if (dum->rh_state == DUMMY_RH_RUNNING) {
+        if (list_empty(&dum_hcd->urbp_list)) {
+                usb_put_dev(dum_hcd->udev);
+                dum_hcd->udev = NULL;
+        } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) {
                 /* want a 1 msec delay here */
-                mod_timer (&dum->timer, jiffies + msecs_to_jiffies(1));
+                mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1));
         }
 
         spin_unlock_irqrestore (&dum->lock, flags);
@@ -1557,36 +1741,48 @@ return_urb:
 
 static int dummy_hub_status (struct usb_hcd *hcd, char *buf)
 {
-        struct dummy            *dum;
+        struct dummy_hcd        *dum_hcd;
         unsigned long           flags;
         int                     retval = 0;
 
-        dum = hcd_to_dummy (hcd);
+        dum_hcd = hcd_to_dummy_hcd(hcd);
 
-        spin_lock_irqsave (&dum->lock, flags);
+        spin_lock_irqsave(&dum_hcd->dum->lock, flags);
         if (!HCD_HW_ACCESSIBLE(hcd))
                 goto done;
 
-        if (dum->resuming && time_after_eq (jiffies, dum->re_timeout)) {
-                dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16);
-                dum->port_status &= ~USB_PORT_STAT_SUSPEND;
-                set_link_state (dum);
+        if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) {
+                dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16);
+                dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND;
+                set_link_state(dum_hcd);
         }
 
-        if ((dum->port_status & PORT_C_MASK) != 0) {
+        if ((dum_hcd->port_status & PORT_C_MASK) != 0) {
                 *buf = (1 << 1);
-                dev_dbg (dummy_dev(dum), "port status 0x%08x has changes\n",
-                                dum->port_status);
+                dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n",
+                                dum_hcd->port_status);
                 retval = 1;
-                if (dum->rh_state == DUMMY_RH_SUSPENDED)
+                if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED)
                         usb_hcd_resume_root_hub (hcd);
         }
 done:
-        spin_unlock_irqrestore (&dum->lock, flags);
+        spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
         return retval;
 }
 
 static inline void
+ss_hub_descriptor(struct usb_hub_descriptor *desc)
+{
+        memset(desc, 0, sizeof *desc);
+        desc->bDescriptorType = 0x2a;
+        desc->bDescLength = 12;
+        desc->wHubCharacteristics = cpu_to_le16(0x0001);
+        desc->bNbrPorts = 1;
+        desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/
+        desc->u.ss.DeviceRemovable = 0xffff;
+}
+
+static inline void
 hub_descriptor (struct usb_hub_descriptor *desc)
 {
         memset (desc, 0, sizeof *desc);
@@ -1606,39 +1802,64 @@ static int dummy_hub_control (
         char            *buf,
         u16             wLength
 ) {
-        struct dummy    *dum;
+        struct dummy_hcd *dum_hcd;
         int             retval = 0;
         unsigned long   flags;
 
         if (!HCD_HW_ACCESSIBLE(hcd))
                 return -ETIMEDOUT;
 
-        dum = hcd_to_dummy (hcd);
-        spin_lock_irqsave (&dum->lock, flags);
+        dum_hcd = hcd_to_dummy_hcd(hcd);
+
+        spin_lock_irqsave(&dum_hcd->dum->lock, flags);
         switch (typeReq) {
         case ClearHubFeature:
                 break;
         case ClearPortFeature:
                 switch (wValue) {
                 case USB_PORT_FEAT_SUSPEND:
-                        if (dum->port_status & USB_PORT_STAT_SUSPEND) {
+                        if (hcd->speed == HCD_USB3) {
+                                dev_dbg(dummy_dev(dum_hcd),
+                                         "USB_PORT_FEAT_SUSPEND req not "
+                                         "supported for USB 3.0 roothub\n");
+                                goto error;
+                        }
+                        if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) {
                                 /* 20msec resume signaling */
-                                dum->resuming = 1;
-                                dum->re_timeout = jiffies +
+                                dum_hcd->resuming = 1;
+                                dum_hcd->re_timeout = jiffies +
                                                 msecs_to_jiffies(20);
                         }
                         break;
                 case USB_PORT_FEAT_POWER:
-                        if (dum->port_status & USB_PORT_STAT_POWER)
-                                dev_dbg (dummy_dev(dum), "power-off\n");
+                        if (hcd->speed == HCD_USB3) {
+                                if (dum_hcd->port_status & USB_PORT_STAT_POWER)
+                                        dev_dbg(dummy_dev(dum_hcd),
+                                                "power-off\n");
+                        } else
+                                if (dum_hcd->port_status &
+                                                        USB_SS_PORT_STAT_POWER)
+                                        dev_dbg(dummy_dev(dum_hcd),
+                                                "power-off\n");
                         /* FALLS THROUGH */
                 default:
-                        dum->port_status &= ~(1 << wValue);
-                        set_link_state (dum);
+                        dum_hcd->port_status &= ~(1 << wValue);
+                        set_link_state(dum_hcd);
                 }
                 break;
         case GetHubDescriptor:
-                hub_descriptor ((struct usb_hub_descriptor *) buf);
+                if (hcd->speed == HCD_USB3 &&
+                                (wLength < USB_DT_SS_HUB_SIZE ||
+                                 wValue != (USB_DT_SS_HUB << 8))) {
+                        dev_dbg(dummy_dev(dum_hcd),
+                                "Wrong hub descriptor type for "
+                                "USB 3.0 roothub.\n");
+                        goto error;
+                }
+                if (hcd->speed == HCD_USB3)
+                        ss_hub_descriptor((struct usb_hub_descriptor *) buf);
+                else
+                        hub_descriptor((struct usb_hub_descriptor *) buf);
                 break;
         case GetHubStatus:
                 *(__le32 *) buf = cpu_to_le32 (0);
@@ -1650,127 +1871,210 @@ static int dummy_hub_control (
                 /* whoever resets or resumes must GetPortStatus to
                  * complete it!!
                  */
-                if (dum->resuming &&
-                                time_after_eq (jiffies, dum->re_timeout)) {
-                        dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16);
-                        dum->port_status &= ~USB_PORT_STAT_SUSPEND;
+                if (dum_hcd->resuming &&
+                                time_after_eq(jiffies, dum_hcd->re_timeout)) {
+                        dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16);
+                        dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND;
                 }
-                if ((dum->port_status & USB_PORT_STAT_RESET) != 0 &&
-                                time_after_eq (jiffies, dum->re_timeout)) {
-                        dum->port_status |= (USB_PORT_STAT_C_RESET << 16);
-                        dum->port_status &= ~USB_PORT_STAT_RESET;
-                        if (dum->pullup) {
-                                dum->port_status |= USB_PORT_STAT_ENABLE;
-                                /* give it the best speed we agree on */
-                                dum->gadget.speed = dum->driver->speed;
-                                dum->gadget.ep0->maxpacket = 64;
-                                switch (dum->gadget.speed) {
-                                case USB_SPEED_HIGH:
-                                        dum->port_status |=
-                                                USB_PORT_STAT_HIGH_SPEED;
-                                        break;
-                                case USB_SPEED_LOW:
-                                        dum->gadget.ep0->maxpacket = 8;
-                                        dum->port_status |=
-                                                USB_PORT_STAT_LOW_SPEED;
-                                        break;
-                                default:
-                                        dum->gadget.speed = USB_SPEED_FULL;
-                                        break;
+                if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 &&
+                                time_after_eq(jiffies, dum_hcd->re_timeout)) {
+                        dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16);
+                        dum_hcd->port_status &= ~USB_PORT_STAT_RESET;
+                        if (dum_hcd->dum->pullup) {
+                                dum_hcd->port_status |= USB_PORT_STAT_ENABLE;
+
+                                if (hcd->speed < HCD_USB3) {
+                                        switch (dum_hcd->dum->gadget.speed) {
+                                        case USB_SPEED_HIGH:
+                                                dum_hcd->port_status |=
+                                                      USB_PORT_STAT_HIGH_SPEED;
+                                                break;
+                                        case USB_SPEED_LOW:
+                                                dum_hcd->dum->gadget.ep0->
+                                                        maxpacket = 8;
+                                                dum_hcd->port_status |=
+                                                        USB_PORT_STAT_LOW_SPEED;
+                                                break;
+                                        default:
+                                                dum_hcd->dum->gadget.speed =
+                                                        USB_SPEED_FULL;
+                                                break;
+                                        }
                                 }
                         }
                 }
-                set_link_state (dum);
-                ((__le16 *) buf)[0] = cpu_to_le16 (dum->port_status);
-                ((__le16 *) buf)[1] = cpu_to_le16 (dum->port_status >> 16);
+                set_link_state(dum_hcd);
+                ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status);
+                ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16);
                 break;
         case SetHubFeature:
                 retval = -EPIPE;
                 break;
         case SetPortFeature:
                 switch (wValue) {
+                case USB_PORT_FEAT_LINK_STATE:
+                        if (hcd->speed != HCD_USB3) {
+                                dev_dbg(dummy_dev(dum_hcd),
+                                         "USB_PORT_FEAT_LINK_STATE req not "
+                                         "supported for USB 2.0 roothub\n");
+                                goto error;
+                        }
+                        /*
+                         * Since this is dummy we don't have an actual link so
+                         * there is nothing to do for the SET_LINK_STATE cmd
+                         */
+                        break;
+                case USB_PORT_FEAT_U1_TIMEOUT:
+                case USB_PORT_FEAT_U2_TIMEOUT:
+                        /* TODO: add suspend/resume support! */
+                        if (hcd->speed != HCD_USB3) {
+                                dev_dbg(dummy_dev(dum_hcd),
+                                         "USB_PORT_FEAT_U1/2_TIMEOUT req not "
+                                         "supported for USB 2.0 roothub\n");
+                                goto error;
+                        }
+                        break;
                 case USB_PORT_FEAT_SUSPEND:
-                        if (dum->active) {
-                                dum->port_status |= USB_PORT_STAT_SUSPEND;
+                        /* Applicable only for USB2.0 hub */
+                        if (hcd->speed == HCD_USB3) {
+                                dev_dbg(dummy_dev(dum_hcd),
+                                         "USB_PORT_FEAT_SUSPEND req not "
+                                         "supported for USB 3.0 roothub\n");
+                                goto error;
+                        }
+                        if (dum_hcd->active) {
+                                dum_hcd->port_status |= USB_PORT_STAT_SUSPEND;
 
                                 /* HNP would happen here; for now we
                                  * assume b_bus_req is always true.
                                  */
-                                set_link_state (dum);
+                                set_link_state(dum_hcd);
                                 if (((1 << USB_DEVICE_B_HNP_ENABLE)
-                                                & dum->devstatus) != 0)
-                                        dev_dbg (dummy_dev(dum),
+                                                & dum_hcd->dum->devstatus) != 0)
+                                        dev_dbg(dummy_dev(dum_hcd),
                                                         "no HNP yet!\n");
                         }
                         break;
                 case USB_PORT_FEAT_POWER:
-                        dum->port_status |= USB_PORT_STAT_POWER;
-                        set_link_state (dum);
+                        if (hcd->speed == HCD_USB3)
+                                dum_hcd->port_status |= USB_SS_PORT_STAT_POWER;
+                        else
+                                dum_hcd->port_status |= USB_PORT_STAT_POWER;
+                        set_link_state(dum_hcd);
                         break;
+                case USB_PORT_FEAT_BH_PORT_RESET:
+                        /* Applicable only for USB3.0 hub */
+                        if (hcd->speed != HCD_USB3) {
+                                dev_dbg(dummy_dev(dum_hcd),
+                                         "USB_PORT_FEAT_BH_PORT_RESET req not "
+                                         "supported for USB 2.0 roothub\n");
+                                goto error;
+                        }
+                        /* FALLS THROUGH */
                 case USB_PORT_FEAT_RESET:
                         /* if it's already enabled, disable */
-                        dum->port_status &= ~(USB_PORT_STAT_ENABLE
+                        if (hcd->speed == HCD_USB3) {
+                                dum_hcd->port_status = 0;
+                                dum_hcd->port_status =
+                                        (USB_SS_PORT_STAT_POWER |
+                                         USB_PORT_STAT_CONNECTION |
+                                         USB_PORT_STAT_RESET);
+                        } else
+                                dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE
                                         | USB_PORT_STAT_LOW_SPEED
                                         | USB_PORT_STAT_HIGH_SPEED);
-                        dum->devstatus = 0;
-                        /* 50msec reset signaling */
-                        dum->re_timeout = jiffies + msecs_to_jiffies(50);
+                        /*
+                         * We want to reset device status. All but the
+                         * Self powered feature
+                         */
+                        dum_hcd->dum->devstatus &=
+                                (1 << USB_DEVICE_SELF_POWERED);
+                        /*
+                         * FIXME USB3.0: what is the correct reset signaling
+                         * interval? Is it still 50msec as for HS?
+                         */
+                        dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50);
                         /* FALLS THROUGH */
                 default:
-                        if ((dum->port_status & USB_PORT_STAT_POWER) != 0) {
-                                dum->port_status |= (1 << wValue);
-                                set_link_state (dum);
-                        }
+                        if (hcd->speed == HCD_USB3) {
+                                if ((dum_hcd->port_status &
+                                     USB_SS_PORT_STAT_POWER) != 0) {
+                                        dum_hcd->port_status |= (1 << wValue);
+                                        set_link_state(dum_hcd);
+                                }
+                        } else
+                                if ((dum_hcd->port_status &
+                                     USB_PORT_STAT_POWER) != 0) {
+                                        dum_hcd->port_status |= (1 << wValue);
+                                        set_link_state(dum_hcd);
+                                }
+                }
+                break;
+        case GetPortErrorCount:
+                if (hcd->speed != HCD_USB3) {
+                        dev_dbg(dummy_dev(dum_hcd),
+                                 "GetPortErrorCount req not "
+                                 "supported for USB 2.0 roothub\n");
+                        goto error;
+                }
+                /* We'll always return 0 since this is a dummy hub */
+                *(__le32 *) buf = cpu_to_le32(0);
+                break;
+        case SetHubDepth:
+                if (hcd->speed != HCD_USB3) {
+                        dev_dbg(dummy_dev(dum_hcd),
+                                 "SetHubDepth req not supported for "
+                                 "USB 2.0 roothub\n");
+                        goto error;
                 }
                 break;
-
         default:
-                dev_dbg (dummy_dev(dum),
+                dev_dbg(dummy_dev(dum_hcd),
                         "hub control req%04x v%04x i%04x l%d\n",
                         typeReq, wValue, wIndex, wLength);
-
+error:
                 /* "protocol stall" on error */
                 retval = -EPIPE;
         }
-        spin_unlock_irqrestore (&dum->lock, flags);
+        spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
 
-        if ((dum->port_status & PORT_C_MASK) != 0)
+        if ((dum_hcd->port_status & PORT_C_MASK) != 0)
                 usb_hcd_poll_rh_status (hcd);
         return retval;
 }
 
 static int dummy_bus_suspend (struct usb_hcd *hcd)
 {
-        struct dummy *dum = hcd_to_dummy (hcd);
+        struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
 
         dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__);
 
-        spin_lock_irq (&dum->lock);
-        dum->rh_state = DUMMY_RH_SUSPENDED;
-        set_link_state (dum);
+        spin_lock_irq(&dum_hcd->dum->lock);
+        dum_hcd->rh_state = DUMMY_RH_SUSPENDED;
+        set_link_state(dum_hcd);
         hcd->state = HC_STATE_SUSPENDED;
-        spin_unlock_irq (&dum->lock);
+        spin_unlock_irq(&dum_hcd->dum->lock);
         return 0;
 }
 
 static int dummy_bus_resume (struct usb_hcd *hcd)
 {
-        struct dummy *dum = hcd_to_dummy (hcd);
+        struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
         int rc = 0;
 
         dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__);
 
-        spin_lock_irq (&dum->lock);
+        spin_lock_irq(&dum_hcd->dum->lock);
         if (!HCD_HW_ACCESSIBLE(hcd)) {
                 rc = -ESHUTDOWN;
         } else {
-                dum->rh_state = DUMMY_RH_RUNNING;
-                set_link_state (dum);
-                if (!list_empty(&dum->urbp_list))
-                        mod_timer (&dum->timer, jiffies);
+                dum_hcd->rh_state = DUMMY_RH_RUNNING;
+                set_link_state(dum_hcd);
+                if (!list_empty(&dum_hcd->urbp_list))
+                        mod_timer(&dum_hcd->timer, jiffies);
                 hcd->state = HC_STATE_RUNNING;
         }
-        spin_unlock_irq (&dum->lock);
+        spin_unlock_irq(&dum_hcd->dum->lock);
         return rc;
 }
 
@@ -1786,18 +2090,37 @@ show_urb (char *buf, size_t size, struct urb *urb)
                 urb,
                 ({ char *s;
                  switch (urb->dev->speed) {
-                 case USB_SPEED_LOW:    s = "ls"; break;
-                 case USB_SPEED_FULL:   s = "fs"; break;
-                 case USB_SPEED_HIGH:   s = "hs"; break;
-                 default:               s = "?"; break;
+                 case USB_SPEED_LOW:
+                        s = "ls";
+                        break;
+                 case USB_SPEED_FULL:
+                        s = "fs";
+                        break;
+                 case USB_SPEED_HIGH:
+                        s = "hs";
+                        break;
+                 case USB_SPEED_SUPER:
+                        s = "ss";
+                        break;
+                 default:
+                        s = "?";
+                        break;
                  }; s; }),
                 ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "",
                 ({ char *s; \
                  switch (usb_pipetype (urb->pipe)) { \
-                 case PIPE_CONTROL:     s = ""; break; \
-                 case PIPE_BULK:        s = "-bulk"; break; \
-                 case PIPE_INTERRUPT:   s = "-int"; break; \
-                 default:               s = "-iso"; break; \
+                 case PIPE_CONTROL: \
+                        s = ""; \
+                        break; \
+                 case PIPE_BULK: \
+                        s = "-bulk"; \
+                        break; \
+                 case PIPE_INTERRUPT: \
+                        s = "-int"; \
+                        break; \
+                 default: \
+                        s = "-iso"; \
+                        break; \
                 }; s;}),
                 urb->actual_length, urb->transfer_buffer_length);
 }
@@ -1806,43 +2129,63 @@ static ssize_t
 show_urbs (struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct usb_hcd          *hcd = dev_get_drvdata (dev);
-        struct dummy            *dum = hcd_to_dummy (hcd);
+        struct dummy_hcd        *dum_hcd = hcd_to_dummy_hcd(hcd);
         struct urbp             *urbp;
         size_t                  size = 0;
         unsigned long           flags;
 
-        spin_lock_irqsave (&dum->lock, flags);
-        list_for_each_entry (urbp, &dum->urbp_list, urbp_list) {
+        spin_lock_irqsave(&dum_hcd->dum->lock, flags);
+        list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) {
                 size_t          temp;
 
                 temp = show_urb (buf, PAGE_SIZE - size, urbp->urb);
                 buf += temp;
                 size += temp;
         }
-        spin_unlock_irqrestore (&dum->lock, flags);
+        spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
 
         return size;
 }
 static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL);
 
-static int dummy_start (struct usb_hcd *hcd)
+static int dummy_start_ss(struct dummy_hcd *dum_hcd)
 {
-        struct dummy            *dum;
+        init_timer(&dum_hcd->timer);
+        dum_hcd->timer.function = dummy_timer;
+        dum_hcd->timer.data = (unsigned long)dum_hcd;
+        dum_hcd->rh_state = DUMMY_RH_RUNNING;
+        INIT_LIST_HEAD(&dum_hcd->urbp_list);
+        dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET;
+        dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING;
+        dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1;
+#ifdef CONFIG_USB_OTG
+        dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1;
+#endif
+        return 0;
+
+        /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */
+        return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs);
+}
 
-        dum = hcd_to_dummy (hcd);
+static int dummy_start(struct usb_hcd *hcd)
+{
+        struct dummy_hcd        *dum_hcd = hcd_to_dummy_hcd(hcd);
 
         /*
          * MASTER side init ... we emulate a root hub that'll only ever
          * talk to one device (the slave side).  Also appears in sysfs,
          * just like more familiar pci-based HCDs.
          */
-        spin_lock_init (&dum->lock);
-        init_timer (&dum->timer);
-        dum->timer.function = dummy_timer;
-        dum->timer.data = (unsigned long) dum;
-        dum->rh_state = DUMMY_RH_RUNNING;
+        if (!usb_hcd_is_primary_hcd(hcd))
+                return dummy_start_ss(dum_hcd);
 
-        INIT_LIST_HEAD (&dum->urbp_list);
+        spin_lock_init(&dum_hcd->dum->lock);
+        init_timer(&dum_hcd->timer);
+        dum_hcd->timer.function = dummy_timer;
+        dum_hcd->timer.data = (unsigned long)dum_hcd;
+        dum_hcd->rh_state = DUMMY_RH_RUNNING;
+
+        INIT_LIST_HEAD(&dum_hcd->urbp_list);
 
         hcd->power_budget = POWER_BUDGET;
         hcd->state = HC_STATE_RUNNING;
@@ -1853,18 +2196,17 @@ static int dummy_start (struct usb_hcd *hcd)
 #endif
 
         /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */
-        return device_create_file (dummy_dev(dum), &dev_attr_urbs);
+        return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs);
 }
 
 static void dummy_stop (struct usb_hcd *hcd)
 {
         struct dummy            *dum;
 
-        dum = hcd_to_dummy (hcd);
-
-        device_remove_file (dummy_dev(dum), &dev_attr_urbs);
-        usb_gadget_unregister_driver (dum->driver);
-        dev_info (dummy_dev(dum), "stopped\n");
+        dum = (hcd_to_dummy_hcd(hcd))->dum;
+        device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs);
+        usb_gadget_unregister_driver(dum->driver);
+        dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n");
 }
 
 /*-------------------------------------------------------------------------*/
@@ -1874,13 +2216,59 @@ static int dummy_h_get_frame (struct usb_hcd *hcd)
         return dummy_g_get_frame (NULL);
 }
 
-static const struct hc_driver dummy_hcd = {
+static int dummy_setup(struct usb_hcd *hcd)
+{
+        if (usb_hcd_is_primary_hcd(hcd)) {
+                the_controller.hs_hcd = hcd_to_dummy_hcd(hcd);
+                the_controller.hs_hcd->dum = &the_controller;
+                /*
+                 * Mark the first roothub as being USB 2.0.
+                 * The USB 3.0 roothub will be registered later by
+                 * dummy_hcd_probe()
+                 */
+                hcd->speed = HCD_USB2;
+                hcd->self.root_hub->speed = USB_SPEED_HIGH;
+        } else {
+                the_controller.ss_hcd = hcd_to_dummy_hcd(hcd);
+                the_controller.ss_hcd->dum = &the_controller;
+                hcd->speed = HCD_USB3;
+                hcd->self.root_hub->speed = USB_SPEED_SUPER;
+        }
+        return 0;
+}
+
+/* Change a group of bulk endpoints to support multiple stream IDs */
+int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
+        struct usb_host_endpoint **eps, unsigned int num_eps,
+        unsigned int num_streams, gfp_t mem_flags)
+{
+        if (hcd->speed != HCD_USB3)
+                dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)),
+                        "%s() - ERROR! Not supported for USB2.0 roothub\n",
+                        __func__);
+        return 0;
+}
+
+/* Reverts a group of bulk endpoints back to not using stream IDs. */
+int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev,
+        struct usb_host_endpoint **eps, unsigned int num_eps,
+        gfp_t mem_flags)
+{
+        if (hcd->speed != HCD_USB3)
+                dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)),
+                        "%s() - ERROR! Not supported for USB2.0 roothub\n",
+                        __func__);
+        return 0;
+}
+
+static struct hc_driver dummy_hcd = {
         .description =          (char *) driver_name,
         .product_desc =         "Dummy host controller",
-        .hcd_priv_size =        sizeof(struct dummy),
+        .hcd_priv_size =        sizeof(struct dummy_hcd),
 
-        .flags =                HCD_USB2,
+        .flags =                HCD_USB3 | HCD_SHARED,
 
+        .reset =                dummy_setup,
         .start =                dummy_start,
         .stop =                 dummy_stop,
 
@@ -1893,51 +2281,85 @@ static const struct hc_driver dummy_hcd = {
         .hub_control =          dummy_hub_control,
         .bus_suspend =          dummy_bus_suspend,
         .bus_resume =           dummy_bus_resume,
+
+        .alloc_streams =        dummy_alloc_streams,
+        .free_streams =         dummy_free_streams,
 };
 
 static int dummy_hcd_probe(struct platform_device *pdev)
 {
-        struct usb_hcd          *hcd;
+        struct usb_hcd          *hs_hcd;
+        struct usb_hcd          *ss_hcd;
         int                     retval;
 
         dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
 
-        hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev));
-        if (!hcd)
+        if (!mod_data.is_super_speed)
+                dummy_hcd.flags = HCD_USB2;
+        hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev));
+        if (!hs_hcd)
                 return -ENOMEM;
-        the_controller = hcd_to_dummy (hcd);
-        hcd->has_tt = 1;
+        hs_hcd->has_tt = 1;
 
-        retval = usb_add_hcd(hcd, 0, 0);
+        retval = usb_add_hcd(hs_hcd, 0, 0);
         if (retval != 0) {
-                usb_put_hcd (hcd);
-                the_controller = NULL;
+                usb_put_hcd(hs_hcd);
+                return retval;
+        }
+
+        if (mod_data.is_super_speed) {
+                ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev,
+                                        dev_name(&pdev->dev), hs_hcd);
+                if (!ss_hcd) {
+                        retval = -ENOMEM;
+                        goto dealloc_usb2_hcd;
+                }
+
+                retval = usb_add_hcd(ss_hcd, 0, 0);
+                if (retval)
+                        goto put_usb3_hcd;
         }
+        return 0;
+
+put_usb3_hcd:
+        usb_put_hcd(ss_hcd);
+dealloc_usb2_hcd:
+        usb_put_hcd(hs_hcd);
+        the_controller.hs_hcd = the_controller.ss_hcd = NULL;
         return retval;
 }
 
-static int dummy_hcd_remove (struct platform_device *pdev)
+static int dummy_hcd_remove(struct platform_device *pdev)
 {
-        struct usb_hcd          *hcd;
+        struct dummy            *dum;
+
+        dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum;
+
+        if (dum->ss_hcd) {
+                usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd));
+                usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd));
+        }
+
+        usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd));
+        usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd));
+
+        the_controller.hs_hcd = NULL;
+        the_controller.ss_hcd = NULL;
 
-        hcd = platform_get_drvdata (pdev);
-        usb_remove_hcd (hcd);
-        usb_put_hcd (hcd);
-        the_controller = NULL;
         return 0;
 }
 
 static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state)
 {
         struct usb_hcd          *hcd;
-        struct dummy            *dum;
+        struct dummy_hcd        *dum_hcd;
         int                     rc = 0;
 
         dev_dbg (&pdev->dev, "%s\n", __func__);
 
         hcd = platform_get_drvdata (pdev);
-        dum = hcd_to_dummy (hcd);
-        if (dum->rh_state == DUMMY_RH_RUNNING) {
+        dum_hcd = hcd_to_dummy_hcd(hcd);
+        if (dum_hcd->rh_state == DUMMY_RH_RUNNING) {
                 dev_warn(&pdev->dev, "Root hub isn't suspended!\n");
                 rc = -EBUSY;
         } else
@@ -1980,6 +2402,9 @@ static int __init init (void)
         if (usb_disabled ())
                 return -ENODEV;
 
+        if (!mod_data.is_high_speed && mod_data.is_super_speed)
+                return -EINVAL;
+
         the_hcd_pdev = platform_device_alloc(driver_name, -1);
         if (!the_hcd_pdev)
                 return retval;
@@ -1997,7 +2422,8 @@ static int __init init (void)
         retval = platform_device_add(the_hcd_pdev);
         if (retval < 0)
                 goto err_add_hcd;
-        if (!the_controller) {
+        if (!the_controller.hs_hcd ||
+            (!the_controller.ss_hcd && mod_data.is_super_speed)) {
                 /*
                  * The hcd was added successfully but its probe function failed
                  * for some reason.
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 9b7360ff5aa7..7a7e6b7e1fd6 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -63,13 +63,16 @@ static int
 ep_matches (
         struct usb_gadget               *gadget,
         struct usb_ep                   *ep,
-        struct usb_endpoint_descriptor  *desc
+        struct usb_endpoint_descriptor  *desc,
+        struct usb_ss_ep_comp_descriptor *ep_comp
 )
 {
         u8              type;
         const char      *tmp;
         u16             max;
 
+        int             num_req_streams = 0;
+
         /* endpoint already claimed? */
         if (NULL != ep->driver_data)
                 return 0;
@@ -129,6 +132,22 @@ ep_matches (
         }
 
         /*
+         * Get the number of required streams from the EP companion
+         * descriptor and see if the EP matches it
+         */
+        if (usb_endpoint_xfer_bulk(desc)) {
+                if (ep_comp) {
+                        num_req_streams = ep_comp->bmAttributes & 0x1f;
+                        if (num_req_streams > ep->max_streams)
+                                return 0;
+                        /* Update the ep_comp descriptor if needed */
+                        if (num_req_streams != ep->max_streams)
+                                ep_comp->bmAttributes = ep->max_streams;
+                }
+
+        }
+
+        /*
          * If the protocol driver hasn't yet decided on wMaxPacketSize
          * and wants to know the maximum possible, provide the info.
          */
@@ -142,13 +161,13 @@ ep_matches (
         max = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
         switch (type) {
         case USB_ENDPOINT_XFER_INT:
-                /* INT:  limit 64 bytes full speed, 1024 high speed */
+                /* INT:  limit 64 bytes full speed, 1024 high/super speed */
                 if (!gadget->is_dualspeed && max > 64)
                         return 0;
                 /* FALLTHROUGH */
 
         case USB_ENDPOINT_XFER_ISOC:
-                /* ISO:  limit 1023 bytes full speed, 1024 high speed */
+                /* ISO:  limit 1023 bytes full speed, 1024 high/super speed */
                 if (ep->maxpacket < max)
                         return 0;
                 if (!gadget->is_dualspeed && max > 1023)
@@ -183,7 +202,7 @@ ep_matches (
         }
 
         /* report (variable) full speed bulk maxpacket */
-        if (USB_ENDPOINT_XFER_BULK == type) {
+        if ((USB_ENDPOINT_XFER_BULK == type) && !ep_comp) {
                 int size = ep->maxpacket;
 
                 /* min() doesn't work on bitfields with gcc-3.5 */
@@ -191,6 +210,7 @@ ep_matches (
                         size = 64;
                 desc->wMaxPacketSize = cpu_to_le16(size);
         }
+        ep->address = desc->bEndpointAddress;
         return 1;
 }
 
@@ -207,38 +227,53 @@ find_ep (struct usb_gadget *gadget, const char *name)
 }
 
 /**
- * usb_ep_autoconfig - choose an endpoint matching the descriptor
+ * usb_ep_autoconfig_ss() - choose an endpoint matching the ep
+ * descriptor and ep companion descriptor
  * @gadget: The device to which the endpoint must belong.
  * @desc: Endpoint descriptor, with endpoint direction and transfer mode
- *      initialized.  For periodic transfers, the maximum packet
- *      size must also be initialized.  This is modified on success.
+ *    initialized.  For periodic transfers, the maximum packet
+ *    size must also be initialized.  This is modified on
+ *    success.
+ * @ep_comp: Endpoint companion descriptor, with the required
+ *    number of streams. Will be modified when the chosen EP
+ *    supports a different number of streams.
  *
- * By choosing an endpoint to use with the specified descriptor, this
- * routine simplifies writing gadget drivers that work with multiple
- * USB device controllers.  The endpoint would be passed later to
- * usb_ep_enable(), along with some descriptor.
+ * This routine replaces the usb_ep_autoconfig when needed
+ * superspeed enhancments. If such enhancemnets are required,
+ * the FD should call usb_ep_autoconfig_ss directly and provide
+ * the additional ep_comp parameter.
+ *
+ * By choosing an endpoint to use with the specified descriptor,
+ * this routine simplifies writing gadget drivers that work with
+ * multiple USB device controllers.  The endpoint would be
+ * passed later to usb_ep_enable(), along with some descriptor.
  *
  * That second descriptor won't always be the same as the first one.
  * For example, isochronous endpoints can be autoconfigured for high
  * bandwidth, and then used in several lower bandwidth altsettings.
  * Also, high and full speed descriptors will be different.
  *
- * Be sure to examine and test the results of autoconfiguration on your
- * hardware.  This code may not make the best choices about how to use the
- * USB controller, and it can't know all the restrictions that may apply.
- * Some combinations of driver and hardware won't be able to autoconfigure.
+ * Be sure to examine and test the results of autoconfiguration
+ * on your hardware.  This code may not make the best choices
+ * about how to use the USB controller, and it can't know all
+ * the restrictions that may apply. Some combinations of driver
+ * and hardware won't be able to autoconfigure.
  *
  * On success, this returns an un-claimed usb_ep, and modifies the endpoint
  * descriptor bEndpointAddress.  For bulk endpoints, the wMaxPacket value
- * is initialized as if the endpoint were used at full speed.  To prevent
- * the endpoint from being returned by a later autoconfig call, claim it
- * by assigning ep->driver_data to some non-null value.
+ * is initialized as if the endpoint were used at full speed and
+ * the bmAttribute field in the ep companion descriptor is
+ * updated with the assigned number of streams if it is
+ * different from the original value. To prevent the endpoint
+ * from being returned by a later autoconfig call, claim it by
+ * assigning ep->driver_data to some non-null value.
  *
  * On failure, this returns a null endpoint descriptor.
  */
-struct usb_ep *usb_ep_autoconfig (
+struct usb_ep *usb_ep_autoconfig_ss(
         struct usb_gadget               *gadget,
-        struct usb_endpoint_descriptor  *desc
+        struct usb_endpoint_descriptor  *desc,
+        struct usb_ss_ep_comp_descriptor *ep_comp
 )
 {
         struct usb_ep   *ep;
@@ -252,23 +287,24 @@ struct usb_ep *usb_ep_autoconfig (
         if (gadget_is_net2280 (gadget) && type == USB_ENDPOINT_XFER_INT) {
                 /* ep-e, ep-f are PIO with only 64 byte fifos */
                 ep = find_ep (gadget, "ep-e");
-                if (ep && ep_matches (gadget, ep, desc))
+                if (ep && ep_matches(gadget, ep, desc, ep_comp))
                         return ep;
                 ep = find_ep (gadget, "ep-f");
-                if (ep && ep_matches (gadget, ep, desc))
+                if (ep && ep_matches(gadget, ep, desc, ep_comp))
                         return ep;
 
         } else if (gadget_is_goku (gadget)) {
                 if (USB_ENDPOINT_XFER_INT == type) {
                         /* single buffering is enough */
-                        ep = find_ep (gadget, "ep3-bulk");
-                        if (ep && ep_matches (gadget, ep, desc))
+                        ep = find_ep(gadget, "ep3-bulk");
+                        if (ep && ep_matches(gadget, ep, desc, ep_comp))
                                 return ep;
                 } else if (USB_ENDPOINT_XFER_BULK == type
                                 && (USB_DIR_IN & desc->bEndpointAddress)) {
                         /* DMA may be available */
-                        ep = find_ep (gadget, "ep2-bulk");
-                        if (ep && ep_matches (gadget, ep, desc))
+                        ep = find_ep(gadget, "ep2-bulk");
+                        if (ep && ep_matches(gadget, ep, desc,
+                                              ep_comp))
                                 return ep;
                 }
 
@@ -287,14 +323,14 @@ struct usb_ep *usb_ep_autoconfig (
                                 ep = find_ep(gadget, "ep2out");
                 } else
                         ep = NULL;
-                if (ep && ep_matches (gadget, ep, desc))
+                if (ep && ep_matches(gadget, ep, desc, ep_comp))
                         return ep;
 #endif
         }
 
         /* Second, look at endpoints until an unclaimed one looks usable */
         list_for_each_entry (ep, &gadget->ep_list, ep_list) {
-                if (ep_matches (gadget, ep, desc))
+                if (ep_matches(gadget, ep, desc, ep_comp))
                         return ep;
         }
 
@@ -303,6 +339,46 @@ struct usb_ep *usb_ep_autoconfig (
 }
 
 /**
+ * usb_ep_autoconfig() - choose an endpoint matching the
+ * descriptor
+ * @gadget: The device to which the endpoint must belong.
+ * @desc: Endpoint descriptor, with endpoint direction and transfer mode
+ *      initialized.  For periodic transfers, the maximum packet
+ *      size must also be initialized.  This is modified on success.
+ *
+ * By choosing an endpoint to use with the specified descriptor, this
+ * routine simplifies writing gadget drivers that work with multiple
+ * USB device controllers.  The endpoint would be passed later to
+ * usb_ep_enable(), along with some descriptor.
+ *
+ * That second descriptor won't always be the same as the first one.
+ * For example, isochronous endpoints can be autoconfigured for high
+ * bandwidth, and then used in several lower bandwidth altsettings.
+ * Also, high and full speed descriptors will be different.
+ *
+ * Be sure to examine and test the results of autoconfiguration on your
+ * hardware.  This code may not make the best choices about how to use the
+ * USB controller, and it can't know all the restrictions that may apply.
+ * Some combinations of driver and hardware won't be able to autoconfigure.
+ *
+ * On success, this returns an un-claimed usb_ep, and modifies the endpoint
+ * descriptor bEndpointAddress.  For bulk endpoints, the wMaxPacket value
+ * is initialized as if the endpoint were used at full speed.  To prevent
+ * the endpoint from being returned by a later autoconfig call, claim it
+ * by assigning ep->driver_data to some non-null value.
+ *
+ * On failure, this returns a null endpoint descriptor.
+ */
+struct usb_ep *usb_ep_autoconfig(
+        struct usb_gadget               *gadget,
+        struct usb_endpoint_descriptor  *desc
+)
+{
+        return usb_ep_autoconfig_ss(gadget, desc, NULL);
+}
+
+
+/**
  * usb_ep_autoconfig_reset - reset endpoint autoconfig state
  * @gadget: device for which autoconfig state will be reset
  *
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 1690c9d68256..aafc84f33e26 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -401,6 +401,7 @@ static struct usb_composite_driver eth_driver = {
         .name           = "g_ether",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_SUPER,
         .unbind         = __exit_p(eth_unbind),
 };
 
diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c
index bd6226cbae86..3f8849339ade 100644
--- a/drivers/usb/gadget/f_acm.c
+++ b/drivers/usb/gadget/f_acm.c
@@ -39,12 +39,6 @@
  * descriptors (roughly equivalent to CDC Unions) may sometimes help.
  */
 
-struct acm_ep_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-        struct usb_endpoint_descriptor  *notify;
-};
-
 struct f_acm {
         struct gserial                  port;
         u8                              ctrl_id, data_id;
@@ -58,11 +52,7 @@ struct f_acm {
          */
         spinlock_t                      lock;
 
-        struct acm_ep_descs             fs;
-        struct acm_ep_descs             hs;
-
         struct usb_ep                   *notify;
-        struct usb_endpoint_descriptor  *notify_desc;
         struct usb_request              *notify_req;
 
         struct usb_cdc_line_coding      port_line_coding;       /* 8-N-1 etc */
@@ -405,23 +395,27 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                         usb_ep_disable(acm->notify);
                 } else {
                         VDBG(cdev, "init acm ctrl interface %d\n", intf);
-                        acm->notify_desc = ep_choose(cdev->gadget,
-                                        acm->hs.notify,
-                                        acm->fs.notify);
+                        if (config_ep_by_speed(cdev->gadget, f, acm->notify))
+                                return -EINVAL;
                 }
-                usb_ep_enable(acm->notify, acm->notify_desc);
+                usb_ep_enable(acm->notify);
                 acm->notify->driver_data = acm;
 
         } else if (intf == acm->data_id) {
                 if (acm->port.in->driver_data) {
                         DBG(cdev, "reset acm ttyGS%d\n", acm->port_num);
                         gserial_disconnect(&acm->port);
-                } else {
+                }
+                if (!acm->port.in->desc || !acm->port.out->desc) {
                         DBG(cdev, "activate acm ttyGS%d\n", acm->port_num);
-                        acm->port.in_desc = ep_choose(cdev->gadget,
-                                        acm->hs.in, acm->fs.in);
-                        acm->port.out_desc = ep_choose(cdev->gadget,
-                                        acm->hs.out, acm->fs.out);
+                        if (config_ep_by_speed(cdev->gadget, f,
+                                               acm->port.in) ||
+                            config_ep_by_speed(cdev->gadget, f,
+                                               acm->port.out)) {
+                                acm->port.in->desc = NULL;
+                                acm->port.out->desc = NULL;
+                                return -EINVAL;
+                        }
                 }
                 gserial_connect(&acm->port, acm->port_num);
 
@@ -629,18 +623,11 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
         acm->notify_req->complete = acm_cdc_notify_complete;
         acm->notify_req->context = acm;
 
-        /* copy descriptors, and track endpoint copies */
+        /* copy descriptors */
         f->descriptors = usb_copy_descriptors(acm_fs_function);
         if (!f->descriptors)
                 goto fail;
 
-        acm->fs.in = usb_find_endpoint(acm_fs_function,
-                        f->descriptors, &acm_fs_in_desc);
-        acm->fs.out = usb_find_endpoint(acm_fs_function,
-                        f->descriptors, &acm_fs_out_desc);
-        acm->fs.notify = usb_find_endpoint(acm_fs_function,
-                        f->descriptors, &acm_fs_notify_desc);
-
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
@@ -653,15 +640,8 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
                 acm_hs_notify_desc.bEndpointAddress =
                                 acm_fs_notify_desc.bEndpointAddress;
 
-                /* copy descriptors, and track endpoint copies */
+                /* copy descriptors */
                 f->hs_descriptors = usb_copy_descriptors(acm_hs_function);
-
-                acm->hs.in = usb_find_endpoint(acm_hs_function,
-                                f->hs_descriptors, &acm_hs_in_desc);
-                acm->hs.out = usb_find_endpoint(acm_hs_function,
-                                f->hs_descriptors, &acm_hs_out_desc);
-                acm->hs.notify = usb_find_endpoint(acm_hs_function,
-                                f->hs_descriptors, &acm_hs_notify_desc);
         }
 
         DBG(cdev, "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n",
diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c
index 8ee330a2ab58..02a02700b51d 100644
--- a/drivers/usb/gadget/f_audio.c
+++ b/drivers/usb/gadget/f_audio.c
@@ -279,7 +279,6 @@ struct f_audio {
 
         /* endpoints handle full and/or high speeds */
         struct usb_ep                   *out_ep;
-        struct usb_endpoint_descriptor  *out_desc;
 
         spinlock_t                      lock;
         struct f_audio_buf *copy_buf;
@@ -575,7 +574,7 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 
         if (intf == 1) {
                 if (alt == 1) {
-                        usb_ep_enable(out_ep, audio->out_desc);
+                        usb_ep_enable(out_ep);
                         out_ep->driver_data = audio;
                         audio->copy_buf = f_audio_buffer_alloc(audio_buf_size);
                         if (IS_ERR(audio->copy_buf))
@@ -677,6 +676,7 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f)
         if (!ep)
                 goto fail;
         audio->out_ep = ep;
+        audio->out_ep->desc = &as_out_ep_desc;
         ep->driver_data = cdev; /* claim */
 
         status = -ENOMEM;
@@ -776,7 +776,6 @@ int __init audio_bind_config(struct usb_configuration *c)
         audio->card.func.set_alt = f_audio_set_alt;
         audio->card.func.setup = f_audio_setup;
         audio->card.func.disable = f_audio_disable;
-        audio->out_desc = &as_out_ep_desc;
 
         control_selector_init(audio);
 
diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index 544257a89ed2..3691a0cb9465 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -46,11 +46,6 @@
  * and also means that a get_alt() method is required.
  */
 
-struct ecm_ep_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-        struct usb_endpoint_descriptor  *notify;
-};
 
 enum ecm_notify_state {
         ECM_NOTIFY_NONE,                /* don't notify */
@@ -64,11 +59,7 @@ struct f_ecm {
 
         char                            ethaddr[14];
 
-        struct ecm_ep_descs             fs;
-        struct ecm_ep_descs             hs;
-
         struct usb_ep                   *notify;
-        struct usb_endpoint_descriptor  *notify_desc;
         struct usb_request              *notify_req;
         u8                              notify_state;
         bool                            is_open;
@@ -86,10 +77,12 @@ static inline struct f_ecm *func_to_ecm(struct usb_function *f)
 /* peak (theoretical) bulk transfer rate in bits-per-second */
 static inline unsigned ecm_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;
+                return 19 * 64 * 1 * 1000 * 8;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -219,8 +212,10 @@ static struct usb_descriptor_header *ecm_fs_function[] = {
         (struct usb_descriptor_header *) &ecm_header_desc,
         (struct usb_descriptor_header *) &ecm_union_desc,
         (struct usb_descriptor_header *) &ecm_desc,
+
         /* NOTE: status endpoint might need to be removed */
         (struct usb_descriptor_header *) &fs_ecm_notify_desc,
+
         /* data interface, altsettings 0 and 1 */
         (struct usb_descriptor_header *) &ecm_data_nop_intf,
         (struct usb_descriptor_header *) &ecm_data_intf,
@@ -240,6 +235,7 @@ static struct usb_endpoint_descriptor hs_ecm_notify_desc = {
         .wMaxPacketSize =       cpu_to_le16(ECM_STATUS_BYTECOUNT),
         .bInterval =            LOG2_STATUS_INTERVAL_MSEC + 4,
 };
+
 static struct usb_endpoint_descriptor hs_ecm_in_desc = {
         .bLength =              USB_DT_ENDPOINT_SIZE,
         .bDescriptorType =      USB_DT_ENDPOINT,
@@ -264,8 +260,10 @@ static struct usb_descriptor_header *ecm_hs_function[] = {
         (struct usb_descriptor_header *) &ecm_header_desc,
         (struct usb_descriptor_header *) &ecm_union_desc,
         (struct usb_descriptor_header *) &ecm_desc,
+
         /* NOTE: status endpoint might need to be removed */
         (struct usb_descriptor_header *) &hs_ecm_notify_desc,
+
         /* data interface, altsettings 0 and 1 */
         (struct usb_descriptor_header *) &ecm_data_nop_intf,
         (struct usb_descriptor_header *) &ecm_data_intf,
@@ -274,6 +272,76 @@ static struct usb_descriptor_header *ecm_hs_function[] = {
         NULL,
 };
 
+/* super speed support: */
+
+static struct usb_endpoint_descriptor ss_ecm_notify_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bEndpointAddress =     USB_DIR_IN,
+        .bmAttributes =         USB_ENDPOINT_XFER_INT,
+        .wMaxPacketSize =       cpu_to_le16(ECM_STATUS_BYTECOUNT),
+        .bInterval =            LOG2_STATUS_INTERVAL_MSEC + 4,
+};
+
+static struct usb_ss_ep_comp_descriptor ss_ecm_intr_comp_desc = {
+        .bLength =              sizeof ss_ecm_intr_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(ECM_STATUS_BYTECOUNT),
+};
+
+static struct usb_endpoint_descriptor ss_ecm_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_ecm_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_ecm_bulk_comp_desc = {
+        .bLength =              sizeof ss_ecm_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 *ecm_ss_function[] = {
+        /* CDC ECM control descriptors */
+        (struct usb_descriptor_header *) &ecm_control_intf,
+        (struct usb_descriptor_header *) &ecm_header_desc,
+        (struct usb_descriptor_header *) &ecm_union_desc,
+        (struct usb_descriptor_header *) &ecm_desc,
+
+        /* NOTE: status endpoint might need to be removed */
+        (struct usb_descriptor_header *) &ss_ecm_notify_desc,
+        (struct usb_descriptor_header *) &ss_ecm_intr_comp_desc,
+
+        /* data interface, altsettings 0 and 1 */
+        (struct usb_descriptor_header *) &ecm_data_nop_intf,
+        (struct usb_descriptor_header *) &ecm_data_intf,
+        (struct usb_descriptor_header *) &ss_ecm_in_desc,
+        (struct usb_descriptor_header *) &ss_ecm_bulk_comp_desc,
+        (struct usb_descriptor_header *) &ss_ecm_out_desc,
+        (struct usb_descriptor_header *) &ss_ecm_bulk_comp_desc,
+        NULL,
+};
+
 /* string descriptors: */
 
 static struct usb_string ecm_string_defs[] = {
@@ -464,13 +532,13 @@ static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                 if (ecm->notify->driver_data) {
                         VDBG(cdev, "reset ecm control %d\n", intf);
                         usb_ep_disable(ecm->notify);
-                } else {
+                }
+                if (!(ecm->notify->desc)) {
                         VDBG(cdev, "init ecm ctrl %d\n", intf);
-                        ecm->notify_desc = ep_choose(cdev->gadget,
-                                        ecm->hs.notify,
-                                        ecm->fs.notify);
+                        if (config_ep_by_speed(cdev->gadget, f, ecm->notify))
+                                goto fail;
                 }
-                usb_ep_enable(ecm->notify, ecm->notify_desc);
+                usb_ep_enable(ecm->notify);
                 ecm->notify->driver_data = ecm;
 
         /* Data interface has two altsettings, 0 and 1 */
@@ -483,12 +551,17 @@ static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                         gether_disconnect(&ecm->port);
                 }
 
-                if (!ecm->port.in) {
+                if (!ecm->port.in_ep->desc ||
+                    !ecm->port.out_ep->desc) {
                         DBG(cdev, "init ecm\n");
-                        ecm->port.in = ep_choose(cdev->gadget,
-                                        ecm->hs.in, ecm->fs.in);
-                        ecm->port.out = ep_choose(cdev->gadget,
-                                        ecm->hs.out, ecm->fs.out);
+                        if (config_ep_by_speed(cdev->gadget, f,
+                                               ecm->port.in_ep) ||
+                            config_ep_by_speed(cdev->gadget, f,
+                                               ecm->port.out_ep)) {
+                                ecm->port.in_ep->desc = NULL;
+                                ecm->port.out_ep->desc = NULL;
+                                goto fail;
+                        }
                 }
 
                 /* CDC Ethernet only sends data in non-default altsettings.
@@ -549,7 +622,7 @@ static void ecm_disable(struct usb_function *f)
         if (ecm->notify->driver_data) {
                 usb_ep_disable(ecm->notify);
                 ecm->notify->driver_data = NULL;
-                ecm->notify_desc = NULL;
+                ecm->notify->desc = NULL;
         }
 }
 
@@ -665,13 +738,6 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
         if (!f->descriptors)
                 goto fail;
 
-        ecm->fs.in = usb_find_endpoint(ecm_fs_function,
-                        f->descriptors, &fs_ecm_in_desc);
-        ecm->fs.out = usb_find_endpoint(ecm_fs_function,
-                        f->descriptors, &fs_ecm_out_desc);
-        ecm->fs.notify = usb_find_endpoint(ecm_fs_function,
-                        f->descriptors, &fs_ecm_notify_desc);
-
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
@@ -688,13 +754,20 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
                 f->hs_descriptors = usb_copy_descriptors(ecm_hs_function);
                 if (!f->hs_descriptors)
                         goto fail;
+        }
 
-                ecm->hs.in = usb_find_endpoint(ecm_hs_function,
-                                f->hs_descriptors, &hs_ecm_in_desc);
-                ecm->hs.out = usb_find_endpoint(ecm_hs_function,
-                                f->hs_descriptors, &hs_ecm_out_desc);
-                ecm->hs.notify = usb_find_endpoint(ecm_hs_function,
-                                f->hs_descriptors, &hs_ecm_notify_desc);
+        if (gadget_is_superspeed(c->cdev->gadget)) {
+                ss_ecm_in_desc.bEndpointAddress =
+                                fs_ecm_in_desc.bEndpointAddress;
+                ss_ecm_out_desc.bEndpointAddress =
+                                fs_ecm_out_desc.bEndpointAddress;
+                ss_ecm_notify_desc.bEndpointAddress =
+                                fs_ecm_notify_desc.bEndpointAddress;
+
+                /* copy descriptors, and track endpoint copies */
+                f->ss_descriptors = usb_copy_descriptors(ecm_ss_function);
+                if (!f->ss_descriptors)
+                        goto fail;
         }
 
         /* NOTE:  all that is done without knowing or caring about
@@ -706,6 +779,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
         ecm->port.close = ecm_close;
 
         DBG(cdev, "CDC Ethernet: %s speed IN/%s OUT/%s NOTIFY/%s\n",
+                        gadget_is_superspeed(c->cdev->gadget) ? "super" :
                         gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
                         ecm->port.in_ep->name, ecm->port.out_ep->name,
                         ecm->notify->name);
@@ -714,6 +788,8 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
 fail:
         if (f->descriptors)
                 usb_free_descriptors(f->descriptors);
+        if (f->hs_descriptors)
+                usb_free_descriptors(f->hs_descriptors);
 
         if (ecm->notify_req) {
                 kfree(ecm->notify_req->buf);
@@ -723,9 +799,9 @@ fail:
         /* we might as well release our claims on endpoints */
         if (ecm->notify)
                 ecm->notify->driver_data = NULL;
-        if (ecm->port.out)
+        if (ecm->port.out_ep->desc)
                 ecm->port.out_ep->driver_data = NULL;
-        if (ecm->port.in)
+        if (ecm->port.in_ep->desc)
                 ecm->port.in_ep->driver_data = NULL;
 
         ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
@@ -740,6 +816,8 @@ ecm_unbind(struct usb_configuration *c, struct usb_function *f)
 
         DBG(c->cdev, "ecm unbind\n");
 
+        if (gadget_is_superspeed(c->cdev->gadget))
+                usb_free_descriptors(f->ss_descriptors);
         if (gadget_is_dualspeed(c->cdev->gadget))
                 usb_free_descriptors(f->hs_descriptors);
         usb_free_descriptors(f->descriptors);
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index b3c304290150..046c6d0e6960 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -35,17 +35,9 @@
  * Ethernet link.
  */
 
-struct eem_ep_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-};
-
 struct f_eem {
         struct gether                   port;
         u8                              ctrl_id;
-
-        struct eem_ep_descs             fs;
-        struct eem_ep_descs             hs;
 };
 
 static inline struct f_eem *func_to_eem(struct usb_function *f)
@@ -123,6 +115,45 @@ static struct usb_descriptor_header *eem_hs_function[] __initdata = {
         NULL,
 };
 
+/* super speed support: */
+
+static struct usb_endpoint_descriptor eem_ss_in_desc __initdata = {
+        .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 eem_ss_out_desc __initdata = {
+        .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 eem_ss_bulk_comp_desc __initdata = {
+        .bLength =              sizeof eem_ss_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 *eem_ss_function[] __initdata = {
+        /* CDC EEM control descriptors */
+        (struct usb_descriptor_header *) &eem_intf,
+        (struct usb_descriptor_header *) &eem_ss_in_desc,
+        (struct usb_descriptor_header *) &eem_ss_bulk_comp_desc,
+        (struct usb_descriptor_header *) &eem_ss_out_desc,
+        (struct usb_descriptor_header *) &eem_ss_bulk_comp_desc,
+        NULL,
+};
+
 /* string descriptors: */
 
 static struct usb_string eem_string_defs[] = {
@@ -176,12 +207,16 @@ static int eem_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                         gether_disconnect(&eem->port);
                 }
 
-                if (!eem->port.in) {
+                if (!eem->port.in_ep->desc || !eem->port.out_ep->desc) {
                         DBG(cdev, "init eem\n");
-                        eem->port.in = ep_choose(cdev->gadget,
-                                        eem->hs.in, eem->fs.in);
-                        eem->port.out = ep_choose(cdev->gadget,
-                                        eem->hs.out, eem->fs.out);
+                        if (config_ep_by_speed(cdev->gadget, f,
+                                               eem->port.in_ep) ||
+                            config_ep_by_speed(cdev->gadget, f,
+                                               eem->port.out_ep)) {
+                                eem->port.in_ep->desc = NULL;
+                                eem->port.out_ep->desc = NULL;
+                                goto fail;
+                        }
                 }
 
                 /* zlps should not occur because zero-length EEM packets
@@ -253,11 +288,6 @@ eem_bind(struct usb_configuration *c, struct usb_function *f)
         if (!f->descriptors)
                 goto fail;
 
-        eem->fs.in = usb_find_endpoint(eem_fs_function,
-                        f->descriptors, &eem_fs_in_desc);
-        eem->fs.out = usb_find_endpoint(eem_fs_function,
-                        f->descriptors, &eem_fs_out_desc);
-
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
@@ -272,14 +302,22 @@ eem_bind(struct usb_configuration *c, struct usb_function *f)
                 f->hs_descriptors = usb_copy_descriptors(eem_hs_function);
                 if (!f->hs_descriptors)
                         goto fail;
+        }
+
+        if (gadget_is_superspeed(c->cdev->gadget)) {
+                eem_ss_in_desc.bEndpointAddress =
+                                eem_fs_in_desc.bEndpointAddress;
+                eem_ss_out_desc.bEndpointAddress =
+                                eem_fs_out_desc.bEndpointAddress;
 
-                eem->hs.in = usb_find_endpoint(eem_hs_function,
-                                f->hs_descriptors, &eem_hs_in_desc);
-                eem->hs.out = usb_find_endpoint(eem_hs_function,
-                                f->hs_descriptors, &eem_hs_out_desc);
+                /* copy descriptors, and track endpoint copies */
+                f->ss_descriptors = usb_copy_descriptors(eem_ss_function);
+                if (!f->ss_descriptors)
+                        goto fail;
         }
 
         DBG(cdev, "CDC Ethernet (EEM): %s speed IN/%s OUT/%s\n",
+                        gadget_is_superspeed(c->cdev->gadget) ? "super" :
                         gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
                         eem->port.in_ep->name, eem->port.out_ep->name);
         return 0;
@@ -287,11 +325,13 @@ eem_bind(struct usb_configuration *c, struct usb_function *f)
 fail:
         if (f->descriptors)
                 usb_free_descriptors(f->descriptors);
+        if (f->hs_descriptors)
+                usb_free_descriptors(f->hs_descriptors);
 
         /* we might as well release our claims on endpoints */
-        if (eem->port.out)
+        if (eem->port.out_ep->desc)
                 eem->port.out_ep->driver_data = NULL;
-        if (eem->port.in)
+        if (eem->port.in_ep->desc)
                 eem->port.in_ep->driver_data = NULL;
 
         ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
@@ -306,6 +346,8 @@ eem_unbind(struct usb_configuration *c, struct usb_function *f)
 
         DBG(c->cdev, "eem unbind\n");
 
+        if (gadget_is_superspeed(c->cdev->gadget))
+                usb_free_descriptors(f->ss_descriptors);
         if (gadget_is_dualspeed(c->cdev->gadget))
                 usb_free_descriptors(f->hs_descriptors);
         usb_free_descriptors(f->descriptors);
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 19fffccc370d..c161a9aaeb7e 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -1544,7 +1544,8 @@ static int ffs_func_eps_enable(struct ffs_function *func)
                 ds = ep->descs[ep->descs[1] ? 1 : 0];
 
                 ep->ep->driver_data = ep;
-                ret = usb_ep_enable(ep->ep, ds);
+                ep->ep->desc = ds;
+                ret = usb_ep_enable(ep->ep);
                 if (likely(!ret)) {
                         epfile->ep = ep;
                         epfile->in = usb_endpoint_dir_in(ds);
diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c
index 598e7e2ab80c..403a48bcf560 100644
--- a/drivers/usb/gadget/f_hid.c
+++ b/drivers/usb/gadget/f_hid.c
@@ -59,8 +59,6 @@ struct f_hidg {
         struct cdev                     cdev;
         struct usb_function             func;
         struct usb_ep                   *in_ep;
-        struct usb_endpoint_descriptor  *fs_in_ep_desc;
-        struct usb_endpoint_descriptor  *hs_in_ep_desc;
 };
 
 static inline struct f_hidg *func_to_hidg(struct usb_function *f)
@@ -416,7 +414,6 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 {
         struct usb_composite_dev                *cdev = f->config->cdev;
         struct f_hidg                           *hidg = func_to_hidg(f);
-        const struct usb_endpoint_descriptor    *ep_desc;
         int status = 0;
 
         VDBG(cdev, "hidg_set_alt intf:%d alt:%d\n", intf, alt);
@@ -426,9 +423,13 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                 if (hidg->in_ep->driver_data != NULL)
                         usb_ep_disable(hidg->in_ep);
 
-                ep_desc = ep_choose(f->config->cdev->gadget,
-                                hidg->hs_in_ep_desc, hidg->fs_in_ep_desc);
-                status = usb_ep_enable(hidg->in_ep, ep_desc);
+                status = config_ep_by_speed(f->config->cdev->gadget, f,
+                                            hidg->in_ep);
+                if (status) {
+                        ERROR(cdev, "config_ep_by_speed FAILED!\n");
+                        goto fail;
+                }
+                status = usb_ep_enable(hidg->in_ep);
                 if (status < 0) {
                         ERROR(cdev, "Enable endpoint FAILED!\n");
                         goto fail;
@@ -498,21 +499,12 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f)
         if (!f->descriptors)
                 goto fail;
 
-        hidg->fs_in_ep_desc = usb_find_endpoint(hidg_fs_descriptors,
-                                                f->descriptors,
-                                                &hidg_fs_in_ep_desc);
-
         if (gadget_is_dualspeed(c->cdev->gadget)) {
                 hidg_hs_in_ep_desc.bEndpointAddress =
                         hidg_fs_in_ep_desc.bEndpointAddress;
                 f->hs_descriptors = usb_copy_descriptors(hidg_hs_descriptors);
                 if (!f->hs_descriptors)
                         goto fail;
-                hidg->hs_in_ep_desc = usb_find_endpoint(hidg_hs_descriptors,
-                                                        f->hs_descriptors,
-                                                        &hidg_hs_in_ep_desc);
-        } else {
-                hidg->hs_in_ep_desc = NULL;
         }
 
         mutex_init(&hidg->lock);
diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c
index b37960f9e753..ca660d40b11a 100644
--- a/drivers/usb/gadget/f_loopback.c
+++ b/drivers/usb/gadget/f_loopback.c
@@ -118,6 +118,49 @@ static struct usb_descriptor_header *hs_loopback_descs[] = {
         NULL,
 };
 
+/* super speed support: */
+
+static struct usb_endpoint_descriptor ss_loop_source_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+struct usb_ss_ep_comp_descriptor ss_loop_source_comp_desc = {
+        .bLength =              USB_DT_SS_EP_COMP_SIZE,
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+        .bMaxBurst =            0,
+        .bmAttributes =         0,
+        .wBytesPerInterval =    0,
+};
+
+static struct usb_endpoint_descriptor ss_loop_sink_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+struct usb_ss_ep_comp_descriptor ss_loop_sink_comp_desc = {
+        .bLength =              USB_DT_SS_EP_COMP_SIZE,
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+        .bMaxBurst =            0,
+        .bmAttributes =         0,
+        .wBytesPerInterval =    0,
+};
+
+static struct usb_descriptor_header *ss_loopback_descs[] = {
+        (struct usb_descriptor_header *) &loopback_intf,
+        (struct usb_descriptor_header *) &ss_loop_source_desc,
+        (struct usb_descriptor_header *) &ss_loop_source_comp_desc,
+        (struct usb_descriptor_header *) &ss_loop_sink_desc,
+        (struct usb_descriptor_header *) &ss_loop_sink_comp_desc,
+        NULL,
+};
+
 /* function-specific strings: */
 
 static struct usb_string strings_loopback[] = {
@@ -175,8 +218,18 @@ autoconf_fail:
                 f->hs_descriptors = hs_loopback_descs;
         }
 
+        /* support super speed hardware */
+        if (gadget_is_superspeed(c->cdev->gadget)) {
+                ss_loop_source_desc.bEndpointAddress =
+                                fs_loop_source_desc.bEndpointAddress;
+                ss_loop_sink_desc.bEndpointAddress =
+                                fs_loop_sink_desc.bEndpointAddress;
+                f->ss_descriptors = ss_loopback_descs;
+        }
+
         DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n",
-                        gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
+            (gadget_is_superspeed(c->cdev->gadget) ? "super" :
+             (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")),
                         f->name, loop->in_ep->name, loop->out_ep->name);
         return 0;
 }
@@ -250,26 +303,27 @@ static int
 enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop)
 {
         int                                     result = 0;
-        const struct usb_endpoint_descriptor    *src, *sink;
         struct usb_ep                           *ep;
         struct usb_request                      *req;
         unsigned                                i;
 
-        src = ep_choose(cdev->gadget,
-                        &hs_loop_source_desc, &fs_loop_source_desc);
-        sink = ep_choose(cdev->gadget,
-                        &hs_loop_sink_desc, &fs_loop_sink_desc);
-
         /* one endpoint writes data back IN to the host */
         ep = loop->in_ep;
-        result = usb_ep_enable(ep, src);
+        result = config_ep_by_speed(cdev->gadget, &(loop->function), ep);
+        if (result)
+                return result;
+        result = usb_ep_enable(ep);
         if (result < 0)
                 return result;
         ep->driver_data = loop;
 
         /* one endpoint just reads OUT packets */
         ep = loop->out_ep;
-        result = usb_ep_enable(ep, sink);
+        result = config_ep_by_speed(cdev->gadget, &(loop->function), ep);
+        if (result)
+                goto fail0;
+
+        result = usb_ep_enable(ep);
         if (result < 0) {
 fail0:
                 ep = loop->in_ep;
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index efb58f9f5aa9..5b9339582007 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2324,18 +2324,6 @@ static int get_next_command(struct fsg_common *common)
 
 /*-------------------------------------------------------------------------*/
 
-static int enable_endpoint(struct fsg_common *common, struct usb_ep *ep,
-                const struct usb_endpoint_descriptor *d)
-{
-        int     rc;
-
-        ep->driver_data = common;
-        rc = usb_ep_enable(ep, d);
-        if (rc)
-                ERROR(common, "can't enable %s, result %d\n", ep->name, rc);
-        return rc;
-}
-
 static int alloc_request(struct fsg_common *common, struct usb_ep *ep,
                 struct usb_request **preq)
 {
@@ -2349,7 +2337,6 @@ static int alloc_request(struct fsg_common *common, struct usb_ep *ep,
 /* Reset interface setting and re-init endpoint state (toggle etc). */
 static int do_set_interface(struct fsg_common *common, struct fsg_dev *new_fsg)
 {
-        const struct usb_endpoint_descriptor *d;
         struct fsg_dev *fsg;
         int i, rc = 0;
 
@@ -2396,20 +2383,26 @@ reset:
         fsg = common->fsg;
 
         /* Enable the endpoints */
-        d = fsg_ep_desc(common->gadget,
-                        &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc);
-        rc = enable_endpoint(common, fsg->bulk_in, d);
+        rc = config_ep_by_speed(common->gadget, &(fsg->function), fsg->bulk_in);
+        if (rc)
+                goto reset;
+        rc = usb_ep_enable(fsg->bulk_in);
         if (rc)
                 goto reset;
+        fsg->bulk_in->driver_data = common;
         fsg->bulk_in_enabled = 1;
 
-        d = fsg_ep_desc(common->gadget,
-                        &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc);
-        rc = enable_endpoint(common, fsg->bulk_out, d);
+        rc = config_ep_by_speed(common->gadget, &(fsg->function),
+                                fsg->bulk_out);
+        if (rc)
+                goto reset;
+        rc = usb_ep_enable(fsg->bulk_out);
         if (rc)
                 goto reset;
+        fsg->bulk_out->driver_data = common;
         fsg->bulk_out_enabled = 1;
-        common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize);
+        common->bulk_out_maxpacket =
+                le16_to_cpu(fsg->bulk_out->desc->wMaxPacketSize);
         clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
 
         /* Allocate the requests */
diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c
index 86902a60bcdb..ae69ed7e6b99 100644
--- a/drivers/usb/gadget/f_ncm.c
+++ b/drivers/usb/gadget/f_ncm.c
@@ -48,12 +48,6 @@
 #define NCM_NDP_HDR_CRC         0x01000000
 #define NCM_NDP_HDR_NOCRC       0x00000000
 
-struct ncm_ep_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-        struct usb_endpoint_descriptor  *notify;
-};
-
 enum ncm_notify_state {
         NCM_NOTIFY_NONE,                /* don't notify */
         NCM_NOTIFY_CONNECT,             /* issue CONNECT next */
@@ -66,11 +60,7 @@ struct f_ncm {
 
         char                            ethaddr[14];
 
-        struct ncm_ep_descs             fs;
-        struct ncm_ep_descs             hs;
-
         struct usb_ep                   *notify;
-        struct usb_endpoint_descriptor  *notify_desc;
         struct usb_request              *notify_req;
         u8                              notify_state;
         bool                            is_open;
@@ -802,13 +792,14 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                 if (ncm->notify->driver_data) {
                         DBG(cdev, "reset ncm control %d\n", intf);
                         usb_ep_disable(ncm->notify);
-                } else {
+                }
+
+                if (!(ncm->notify->desc)) {
                         DBG(cdev, "init ncm ctrl %d\n", intf);
-                        ncm->notify_desc = ep_choose(cdev->gadget,
-                                        ncm->hs.notify,
-                                        ncm->fs.notify);
+                        if (config_ep_by_speed(cdev->gadget, f, ncm->notify))
+                                goto fail;
                 }
-                usb_ep_enable(ncm->notify, ncm->notify_desc);
+                usb_ep_enable(ncm->notify);
                 ncm->notify->driver_data = ncm;
 
         /* Data interface has two altsettings, 0 and 1 */
@@ -829,14 +820,17 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                 if (alt == 1) {
                         struct net_device       *net;
 
-                        if (!ncm->port.in) {
+                        if (!ncm->port.in_ep->desc ||
+                            !ncm->port.out_ep->desc) {
                                 DBG(cdev, "init ncm\n");
-                                ncm->port.in = ep_choose(cdev->gadget,
-                                                         ncm->hs.in,
-                                                         ncm->fs.in);
-                                ncm->port.out = ep_choose(cdev->gadget,
-                                                          ncm->hs.out,
-                                                          ncm->fs.out);
+                                if (config_ep_by_speed(cdev->gadget, f,
+                                                       ncm->port.in_ep) ||
+                                    config_ep_by_speed(cdev->gadget, f,
+                                                       ncm->port.out_ep)) {
+                                        ncm->port.in_ep->desc = NULL;
+                                        ncm->port.out_ep->desc = NULL;
+                                        goto fail;
+                                }
                         }
 
                         /* TODO */
@@ -1111,7 +1105,7 @@ static void ncm_disable(struct usb_function *f)
         if (ncm->notify->driver_data) {
                 usb_ep_disable(ncm->notify);
                 ncm->notify->driver_data = NULL;
-                ncm->notify_desc = NULL;
+                ncm->notify->desc = NULL;
         }
 }
 
@@ -1228,13 +1222,6 @@ ncm_bind(struct usb_configuration *c, struct usb_function *f)
         if (!f->descriptors)
                 goto fail;
 
-        ncm->fs.in = usb_find_endpoint(ncm_fs_function,
-                        f->descriptors, &fs_ncm_in_desc);
-        ncm->fs.out = usb_find_endpoint(ncm_fs_function,
-                        f->descriptors, &fs_ncm_out_desc);
-        ncm->fs.notify = usb_find_endpoint(ncm_fs_function,
-                        f->descriptors, &fs_ncm_notify_desc);
-
         /*
          * support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
@@ -1252,13 +1239,6 @@ ncm_bind(struct usb_configuration *c, struct usb_function *f)
                 f->hs_descriptors = usb_copy_descriptors(ncm_hs_function);
                 if (!f->hs_descriptors)
                         goto fail;
-
-                ncm->hs.in = usb_find_endpoint(ncm_hs_function,
-                                f->hs_descriptors, &hs_ncm_in_desc);
-                ncm->hs.out = usb_find_endpoint(ncm_hs_function,
-                                f->hs_descriptors, &hs_ncm_out_desc);
-                ncm->hs.notify = usb_find_endpoint(ncm_hs_function,
-                                f->hs_descriptors, &hs_ncm_notify_desc);
         }
 
         /*
@@ -1288,9 +1268,9 @@ fail:
         /* we might as well release our claims on endpoints */
         if (ncm->notify)
                 ncm->notify->driver_data = NULL;
-        if (ncm->port.out)
+        if (ncm->port.out_ep->desc)
                 ncm->port.out_ep->driver_data = NULL;
-        if (ncm->port.in)
+        if (ncm->port.in_ep->desc)
                 ncm->port.in_ep->driver_data = NULL;
 
         ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c
index 8f8c64371475..394502abeb96 100644
--- a/drivers/usb/gadget/f_obex.c
+++ b/drivers/usb/gadget/f_obex.c
@@ -39,20 +39,12 @@
  * ready to handle the commands.
  */
 
-struct obex_ep_descs {
-        struct usb_endpoint_descriptor  *obex_in;
-        struct usb_endpoint_descriptor  *obex_out;
-};
-
 struct f_obex {
         struct gserial                  port;
         u8                              ctrl_id;
         u8                              data_id;
         u8                              port_num;
         u8                              can_activate;
-
-        struct obex_ep_descs            fs;
-        struct obex_ep_descs            hs;
 };
 
 static inline struct f_obex *func_to_obex(struct usb_function *f)
@@ -227,12 +219,16 @@ static int obex_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                         gserial_disconnect(&obex->port);
                 }
 
-                if (!obex->port.in_desc) {
+                if (!obex->port.in->desc || !obex->port.out->desc) {
                         DBG(cdev, "init obex ttyGS%d\n", obex->port_num);
-                        obex->port.in_desc = ep_choose(cdev->gadget,
-                                        obex->hs.obex_in, obex->fs.obex_in);
-                        obex->port.out_desc = ep_choose(cdev->gadget,
-                                        obex->hs.obex_out, obex->fs.obex_out);
+                        if (config_ep_by_speed(cdev->gadget, f,
+                                               obex->port.in) ||
+                            config_ep_by_speed(cdev->gadget, f,
+                                               obex->port.out)) {
+                                obex->port.out->desc = NULL;
+                                obex->port.in->desc = NULL;
+                                goto fail;
+                        }
                 }
 
                 if (alt == 1) {
@@ -346,11 +342,6 @@ obex_bind(struct usb_configuration *c, struct usb_function *f)
         /* copy descriptors, and track endpoint copies */
         f->descriptors = usb_copy_descriptors(fs_function);
 
-        obex->fs.obex_in = usb_find_endpoint(fs_function,
-                        f->descriptors, &obex_fs_ep_in_desc);
-        obex->fs.obex_out = usb_find_endpoint(fs_function,
-                        f->descriptors, &obex_fs_ep_out_desc);
-
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
@@ -364,11 +355,6 @@ obex_bind(struct usb_configuration *c, struct usb_function *f)
 
                 /* copy descriptors, and track endpoint copies */
                 f->hs_descriptors = usb_copy_descriptors(hs_function);
-
-                obex->hs.obex_in = usb_find_endpoint(hs_function,
-                                f->hs_descriptors, &obex_hs_ep_in_desc);
-                obex->hs.obex_out = usb_find_endpoint(hs_function,
-                                f->hs_descriptors, &obex_hs_ep_out_desc);
         }
 
         /* Avoid letting this gadget enumerate until the userspace
diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c
index f22fc685ddfd..8f8d3f6cd89e 100644
--- a/drivers/usb/gadget/f_phonet.c
+++ b/drivers/usb/gadget/f_phonet.c
@@ -428,17 +428,16 @@ static int pn_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                 spin_lock(&port->lock);
                 __pn_reset(f);
                 if (alt == 1) {
-                        struct usb_endpoint_descriptor *out, *in;
                         int i;
 
-                        out = ep_choose(gadget,
-                                        &pn_hs_sink_desc,
-                                        &pn_fs_sink_desc);
-                        in = ep_choose(gadget,
-                                        &pn_hs_source_desc,
-                                        &pn_fs_source_desc);
-                        usb_ep_enable(fp->out_ep, out);
-                        usb_ep_enable(fp->in_ep, in);
+                        if (config_ep_by_speed(gadget, f, fp->in_ep) ||
+                            config_ep_by_speed(gadget, f, fp->out_ep)) {
+                                fp->in_ep->desc = NULL;
+                                fp->out_ep->desc = NULL;
+                                return -EINVAL;
+                        }
+                        usb_ep_enable(fp->out_ep);
+                        usb_ep_enable(fp->in_ep);
 
                         port->usb = fp;
                         fp->out_ep->driver_data = fp;
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index fa12ec8364ef..8f3eae90919f 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -76,23 +76,13 @@
  *   - MS-Windows drivers sometimes emit undocumented requests.
  */
 
-struct rndis_ep_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-        struct usb_endpoint_descriptor  *notify;
-};
-
 struct f_rndis {
         struct gether                   port;
         u8                              ctrl_id, data_id;
         u8                              ethaddr[ETH_ALEN];
         int                             config;
 
-        struct rndis_ep_descs           fs;
-        struct rndis_ep_descs           hs;
-
         struct usb_ep                   *notify;
-        struct usb_endpoint_descriptor  *notify_desc;
         struct usb_request              *notify_req;
         atomic_t                        notify_count;
 };
@@ -105,10 +95,12 @@ static inline struct f_rndis *func_to_rndis(struct usb_function *f)
 /* peak (theoretical) bulk transfer rate in bits-per-second */
 static unsigned int 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;
+                return 19 * 64 * 1 * 1000 * 8;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -226,6 +218,7 @@ static struct usb_endpoint_descriptor fs_out_desc = {
 
 static struct usb_descriptor_header *eth_fs_function[] = {
         (struct usb_descriptor_header *) &rndis_iad_descriptor,
+
         /* control interface matches ACM, not Ethernet */
         (struct usb_descriptor_header *) &rndis_control_intf,
         (struct usb_descriptor_header *) &header_desc,
@@ -233,6 +226,7 @@ static struct usb_descriptor_header *eth_fs_function[] = {
         (struct usb_descriptor_header *) &rndis_acm_descriptor,
         (struct usb_descriptor_header *) &rndis_union_desc,
         (struct usb_descriptor_header *) &fs_notify_desc,
+
         /* data interface has no altsetting */
         (struct usb_descriptor_header *) &rndis_data_intf,
         (struct usb_descriptor_header *) &fs_in_desc,
@@ -251,6 +245,7 @@ static struct usb_endpoint_descriptor hs_notify_desc = {
         .wMaxPacketSize =       cpu_to_le16(STATUS_BYTECOUNT),
         .bInterval =            LOG2_STATUS_INTERVAL_MSEC + 4,
 };
+
 static struct usb_endpoint_descriptor hs_in_desc = {
         .bLength =              USB_DT_ENDPOINT_SIZE,
         .bDescriptorType =      USB_DT_ENDPOINT,
@@ -271,6 +266,7 @@ static struct usb_endpoint_descriptor hs_out_desc = {
 
 static struct usb_descriptor_header *eth_hs_function[] = {
         (struct usb_descriptor_header *) &rndis_iad_descriptor,
+
         /* control interface matches ACM, not Ethernet */
         (struct usb_descriptor_header *) &rndis_control_intf,
         (struct usb_descriptor_header *) &header_desc,
@@ -278,6 +274,7 @@ static struct usb_descriptor_header *eth_hs_function[] = {
         (struct usb_descriptor_header *) &rndis_acm_descriptor,
         (struct usb_descriptor_header *) &rndis_union_desc,
         (struct usb_descriptor_header *) &hs_notify_desc,
+
         /* data interface has no altsetting */
         (struct usb_descriptor_header *) &rndis_data_intf,
         (struct usb_descriptor_header *) &hs_in_desc,
@@ -285,6 +282,76 @@ static struct usb_descriptor_header *eth_hs_function[] = {
         NULL,
 };
 
+/* super speed support: */
+
+static struct usb_endpoint_descriptor ss_notify_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bEndpointAddress =     USB_DIR_IN,
+        .bmAttributes =         USB_ENDPOINT_XFER_INT,
+        .wMaxPacketSize =       cpu_to_le16(STATUS_BYTECOUNT),
+        .bInterval =            LOG2_STATUS_INTERVAL_MSEC + 4,
+};
+
+static struct usb_ss_ep_comp_descriptor ss_intr_comp_desc = {
+        .bLength =              sizeof ss_intr_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(STATUS_BYTECOUNT),
+};
+
+static struct usb_endpoint_descriptor ss_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_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_bulk_comp_desc = {
+        .bLength =              sizeof ss_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 *eth_ss_function[] = {
+        (struct usb_descriptor_header *) &rndis_iad_descriptor,
+
+        /* control interface matches ACM, not Ethernet */
+        (struct usb_descriptor_header *) &rndis_control_intf,
+        (struct usb_descriptor_header *) &header_desc,
+        (struct usb_descriptor_header *) &call_mgmt_descriptor,
+        (struct usb_descriptor_header *) &rndis_acm_descriptor,
+        (struct usb_descriptor_header *) &rndis_union_desc,
+        (struct usb_descriptor_header *) &ss_notify_desc,
+        (struct usb_descriptor_header *) &ss_intr_comp_desc,
+
+        /* data interface has no altsetting */
+        (struct usb_descriptor_header *) &rndis_data_intf,
+        (struct usb_descriptor_header *) &ss_in_desc,
+        (struct usb_descriptor_header *) &ss_bulk_comp_desc,
+        (struct usb_descriptor_header *) &ss_out_desc,
+        (struct usb_descriptor_header *) &ss_bulk_comp_desc,
+        NULL,
+};
+
 /* string descriptors: */
 
 static struct usb_string rndis_string_defs[] = {
@@ -484,13 +551,13 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                 if (rndis->notify->driver_data) {
                         VDBG(cdev, "reset rndis control %d\n", intf);
                         usb_ep_disable(rndis->notify);
-                } else {
+                }
+                if (!rndis->notify->desc) {
                         VDBG(cdev, "init rndis ctrl %d\n", intf);
-                        rndis->notify_desc = ep_choose(cdev->gadget,
-                                        rndis->hs.notify,
-                                        rndis->fs.notify);
+                        if (config_ep_by_speed(cdev->gadget, f, rndis->notify))
+                                goto fail;
                 }
-                usb_ep_enable(rndis->notify, rndis->notify_desc);
+                usb_ep_enable(rndis->notify);
                 rndis->notify->driver_data = rndis;
 
         } else if (intf == rndis->data_id) {
@@ -501,12 +568,16 @@ static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                         gether_disconnect(&rndis->port);
                 }
 
-                if (!rndis->port.in) {
+                if (!rndis->port.in_ep->desc || !rndis->port.out_ep->desc) {
                         DBG(cdev, "init rndis\n");
-                        rndis->port.in = ep_choose(cdev->gadget,
-                                        rndis->hs.in, rndis->fs.in);
-                        rndis->port.out = ep_choose(cdev->gadget,
-                                        rndis->hs.out, rndis->fs.out);
+                        if (config_ep_by_speed(cdev->gadget, f,
+                                               rndis->port.in_ep) ||
+                            config_ep_by_speed(cdev->gadget, f,
+                                               rndis->port.out_ep)) {
+                                rndis->port.in_ep->desc = NULL;
+                                rndis->port.out_ep->desc = NULL;
+                                goto fail;
+                        }
                 }
 
                 /* Avoid ZLPs; they can be troublesome. */
@@ -662,13 +733,6 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
         if (!f->descriptors)
                 goto fail;
 
-        rndis->fs.in = usb_find_endpoint(eth_fs_function,
-                        f->descriptors, &fs_in_desc);
-        rndis->fs.out = usb_find_endpoint(eth_fs_function,
-                        f->descriptors, &fs_out_desc);
-        rndis->fs.notify = usb_find_endpoint(eth_fs_function,
-                        f->descriptors, &fs_notify_desc);
-
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
@@ -683,16 +747,22 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
 
                 /* copy descriptors, and track endpoint copies */
                 f->hs_descriptors = usb_copy_descriptors(eth_hs_function);
-
                 if (!f->hs_descriptors)
                         goto fail;
+        }
 
-                rndis->hs.in = usb_find_endpoint(eth_hs_function,
-                                f->hs_descriptors, &hs_in_desc);
-                rndis->hs.out = usb_find_endpoint(eth_hs_function,
-                                f->hs_descriptors, &hs_out_desc);
-                rndis->hs.notify = usb_find_endpoint(eth_hs_function,
-                                f->hs_descriptors, &hs_notify_desc);
+        if (gadget_is_superspeed(c->cdev->gadget)) {
+                ss_in_desc.bEndpointAddress =
+                                fs_in_desc.bEndpointAddress;
+                ss_out_desc.bEndpointAddress =
+                                fs_out_desc.bEndpointAddress;
+                ss_notify_desc.bEndpointAddress =
+                                fs_notify_desc.bEndpointAddress;
+
+                /* copy descriptors, and track endpoint copies */
+                f->ss_descriptors = usb_copy_descriptors(eth_ss_function);
+                if (!f->ss_descriptors)
+                        goto fail;
         }
 
         rndis->port.open = rndis_open;
@@ -719,12 +789,15 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
          */
 
         DBG(cdev, "RNDIS: %s speed IN/%s OUT/%s NOTIFY/%s\n",
+                        gadget_is_superspeed(c->cdev->gadget) ? "super" :
                         gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
                         rndis->port.in_ep->name, rndis->port.out_ep->name,
                         rndis->notify->name);
         return 0;
 
 fail:
+        if (gadget_is_superspeed(c->cdev->gadget) && f->ss_descriptors)
+                usb_free_descriptors(f->ss_descriptors);
         if (gadget_is_dualspeed(c->cdev->gadget) && f->hs_descriptors)
                 usb_free_descriptors(f->hs_descriptors);
         if (f->descriptors)
@@ -738,9 +811,9 @@ fail:
         /* we might as well release our claims on endpoints */
         if (rndis->notify)
                 rndis->notify->driver_data = NULL;
-        if (rndis->port.out)
+        if (rndis->port.out_ep->desc)
                 rndis->port.out_ep->driver_data = NULL;
-        if (rndis->port.in)
+        if (rndis->port.in_ep->desc)
                 rndis->port.in_ep->driver_data = NULL;
 
         ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
@@ -756,6 +829,8 @@ rndis_unbind(struct usb_configuration *c, struct usb_function *f)
         rndis_deregister(rndis->config);
         rndis_exit();
 
+        if (gadget_is_superspeed(c->cdev->gadget))
+                usb_free_descriptors(f->ss_descriptors);
         if (gadget_is_dualspeed(c->cdev->gadget))
                 usb_free_descriptors(f->hs_descriptors);
         usb_free_descriptors(f->descriptors);
diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c
index 490b00b01a7d..91fdf790ed20 100644
--- a/drivers/usb/gadget/f_serial.c
+++ b/drivers/usb/gadget/f_serial.c
@@ -27,18 +27,10 @@
  * if you can arrange appropriate host side drivers.
  */
 
-struct gser_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-};
-
 struct f_gser {
         struct gserial                  port;
         u8                              data_id;
         u8                              port_num;
-
-        struct gser_descs               fs;
-        struct gser_descs               hs;
 };
 
 static inline struct f_gser *func_to_gser(struct usb_function *f)
@@ -136,12 +128,15 @@ static int gser_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
         if (gser->port.in->driver_data) {
                 DBG(cdev, "reset generic ttyGS%d\n", gser->port_num);
                 gserial_disconnect(&gser->port);
-        } else {
+        }
+        if (!gser->port.in->desc || !gser->port.out->desc) {
                 DBG(cdev, "activate generic ttyGS%d\n", gser->port_num);
-                gser->port.in_desc = ep_choose(cdev->gadget,
-                                gser->hs.in, gser->fs.in);
-                gser->port.out_desc = ep_choose(cdev->gadget,
-                                gser->hs.out, gser->fs.out);
+                if (!config_ep_by_speed(cdev->gadget, f, gser->port.in) ||
+                    !config_ep_by_speed(cdev->gadget, f, gser->port.out)) {
+                        gser->port.in->desc = NULL;
+                        gser->port.out->desc = NULL;
+                        return -EINVAL;
+                }
         }
         gserial_connect(&gser->port, gser->port_num);
         return 0;
@@ -193,12 +188,6 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)
         /* copy descriptors, and track endpoint copies */
         f->descriptors = usb_copy_descriptors(gser_fs_function);
 
-        gser->fs.in = usb_find_endpoint(gser_fs_function,
-                        f->descriptors, &gser_fs_in_desc);
-        gser->fs.out = usb_find_endpoint(gser_fs_function,
-                        f->descriptors, &gser_fs_out_desc);
-
-
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
@@ -211,11 +200,6 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)
 
                 /* copy descriptors, and track endpoint copies */
                 f->hs_descriptors = usb_copy_descriptors(gser_hs_function);
-
-                gser->hs.in = usb_find_endpoint(gser_hs_function,
-                                f->hs_descriptors, &gser_hs_in_desc);
-                gser->hs.out = usb_find_endpoint(gser_hs_function,
-                                f->hs_descriptors, &gser_hs_out_desc);
         }
 
         DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n",
diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c
index e403a534dd55..e18b4f520951 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -131,6 +131,49 @@ static struct usb_descriptor_header *hs_source_sink_descs[] = {
         NULL,
 };
 
+/* super speed support: */
+
+static struct usb_endpoint_descriptor ss_source_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+struct usb_ss_ep_comp_descriptor ss_source_comp_desc = {
+        .bLength =              USB_DT_SS_EP_COMP_SIZE,
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+        .bMaxBurst =            0,
+        .bmAttributes =         0,
+        .wBytesPerInterval =    0,
+};
+
+static struct usb_endpoint_descriptor ss_sink_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+struct usb_ss_ep_comp_descriptor ss_sink_comp_desc = {
+        .bLength =              USB_DT_SS_EP_COMP_SIZE,
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+        .bMaxBurst =            0,
+        .bmAttributes =         0,
+        .wBytesPerInterval =    0,
+};
+
+static struct usb_descriptor_header *ss_source_sink_descs[] = {
+        (struct usb_descriptor_header *) &source_sink_intf,
+        (struct usb_descriptor_header *) &ss_source_desc,
+        (struct usb_descriptor_header *) &ss_source_comp_desc,
+        (struct usb_descriptor_header *) &ss_sink_desc,
+        (struct usb_descriptor_header *) &ss_sink_comp_desc,
+        NULL,
+};
+
 /* function-specific strings: */
 
 static struct usb_string strings_sourcesink[] = {
@@ -187,8 +230,18 @@ autoconf_fail:
                 f->hs_descriptors = hs_source_sink_descs;
         }
 
+        /* support super speed hardware */
+        if (gadget_is_superspeed(c->cdev->gadget)) {
+                ss_source_desc.bEndpointAddress =
+                                fs_source_desc.bEndpointAddress;
+                ss_sink_desc.bEndpointAddress =
+                                fs_sink_desc.bEndpointAddress;
+                f->ss_descriptors = ss_source_sink_descs;
+        }
+
         DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n",
-                        gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
+            (gadget_is_superspeed(c->cdev->gadget) ? "super" :
+             (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")),
                         f->name, ss->in_ep->name, ss->out_ep->name);
         return 0;
 }
@@ -343,15 +396,14 @@ static int
 enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss)
 {
         int                                     result = 0;
-        const struct usb_endpoint_descriptor    *src, *sink;
         struct usb_ep                           *ep;
 
-        src = ep_choose(cdev->gadget, &hs_source_desc, &fs_source_desc);
-        sink = ep_choose(cdev->gadget, &hs_sink_desc, &fs_sink_desc);
-
         /* one endpoint writes (sources) zeroes IN (to the host) */
         ep = ss->in_ep;
-        result = usb_ep_enable(ep, src);
+        result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);
+        if (result)
+                return result;
+        result = usb_ep_enable(ep);
         if (result < 0)
                 return result;
         ep->driver_data = ss;
@@ -367,7 +419,10 @@ fail:
 
         /* one endpoint reads (sinks) anything OUT (from the host) */
         ep = ss->out_ep;
-        result = usb_ep_enable(ep, sink);
+        result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);
+        if (result)
+                goto fail;
+        result = usb_ep_enable(ep);
         if (result < 0)
                 goto fail;
         ep->driver_data = ss;
@@ -435,6 +490,8 @@ static int sourcesink_setup(struct usb_configuration *c,
         u16                     w_value = le16_to_cpu(ctrl->wValue);
         u16                     w_length = le16_to_cpu(ctrl->wLength);
 
+        req->length = USB_BUFSIZ;
+
         /* composite driver infrastructure handles everything except
          * the two control test requests.
          */
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c
index 8675ca415329..3dc53754ab60 100644
--- a/drivers/usb/gadget/f_subset.c
+++ b/drivers/usb/gadget/f_subset.c
@@ -57,18 +57,10 @@
  * caring about specific product and vendor IDs.
  */
 
-struct geth_descs {
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-};
-
 struct f_gether {
         struct gether                   port;
 
         char                            ethaddr[14];
-
-        struct geth_descs               fs;
-        struct geth_descs               hs;
 };
 
 static inline struct f_gether *func_to_geth(struct usb_function *f)
@@ -209,6 +201,46 @@ static struct usb_descriptor_header *hs_eth_function[] __initdata = {
         NULL,
 };
 
+/* super speed support: */
+
+static struct usb_endpoint_descriptor ss_subset_in_desc __initdata = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+static struct usb_endpoint_descriptor ss_subset_out_desc __initdata = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor ss_subset_bulk_comp_desc __initdata = {
+        .bLength =              sizeof ss_subset_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 *ss_eth_function[] __initdata = {
+        (struct usb_descriptor_header *) &subset_data_intf,
+        (struct usb_descriptor_header *) &mdlm_header_desc,
+        (struct usb_descriptor_header *) &mdlm_desc,
+        (struct usb_descriptor_header *) &mdlm_detail_desc,
+        (struct usb_descriptor_header *) &ether_desc,
+        (struct usb_descriptor_header *) &ss_subset_in_desc,
+        (struct usb_descriptor_header *) &ss_subset_bulk_comp_desc,
+        (struct usb_descriptor_header *) &ss_subset_out_desc,
+        (struct usb_descriptor_header *) &ss_subset_bulk_comp_desc,
+        NULL,
+};
+
 /* string descriptors: */
 
 static struct usb_string geth_string_defs[] = {
@@ -243,10 +275,12 @@ static int geth_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
         }
 
         DBG(cdev, "init + activate cdc subset\n");
-        geth->port.in = ep_choose(cdev->gadget,
-                        geth->hs.in, geth->fs.in);
-        geth->port.out = ep_choose(cdev->gadget,
-                        geth->hs.out, geth->fs.out);
+        if (config_ep_by_speed(cdev->gadget, f, geth->port.in_ep) ||
+            config_ep_by_speed(cdev->gadget, f, geth->port.out_ep)) {
+                geth->port.in_ep->desc = NULL;
+                geth->port.out_ep->desc = NULL;
+                return -EINVAL;
+        }
 
         net = gether_connect(&geth->port);
         return IS_ERR(net) ? PTR_ERR(net) : 0;
@@ -296,12 +330,8 @@ geth_bind(struct usb_configuration *c, struct usb_function *f)
 
         /* copy descriptors, and track endpoint copies */
         f->descriptors = usb_copy_descriptors(fs_eth_function);
-
-        geth->fs.in = usb_find_endpoint(fs_eth_function,
-                        f->descriptors, &fs_subset_in_desc);
-        geth->fs.out = usb_find_endpoint(fs_eth_function,
-                        f->descriptors, &fs_subset_out_desc);
-
+        if (!f->descriptors)
+                goto fail;
 
         /* support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
@@ -315,11 +345,20 @@ geth_bind(struct usb_configuration *c, struct usb_function *f)
 
                 /* copy descriptors, and track endpoint copies */
                 f->hs_descriptors = usb_copy_descriptors(hs_eth_function);
+                if (!f->hs_descriptors)
+                        goto fail;
+        }
 
-                geth->hs.in = usb_find_endpoint(hs_eth_function,
-                                f->hs_descriptors, &hs_subset_in_desc);
-                geth->hs.out = usb_find_endpoint(hs_eth_function,
-                                f->hs_descriptors, &hs_subset_out_desc);
+        if (gadget_is_superspeed(c->cdev->gadget)) {
+                ss_subset_in_desc.bEndpointAddress =
+                                fs_subset_in_desc.bEndpointAddress;
+                ss_subset_out_desc.bEndpointAddress =
+                                fs_subset_out_desc.bEndpointAddress;
+
+                /* copy descriptors, and track endpoint copies */
+                f->ss_descriptors = usb_copy_descriptors(ss_eth_function);
+                if (!f->ss_descriptors)
+                        goto fail;
         }
 
         /* NOTE:  all that is done without knowing or caring about
@@ -328,15 +367,21 @@ geth_bind(struct usb_configuration *c, struct usb_function *f)
          */
 
         DBG(cdev, "CDC Subset: %s speed IN/%s OUT/%s\n",
+                        gadget_is_superspeed(c->cdev->gadget) ? "super" :
                         gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
                         geth->port.in_ep->name, geth->port.out_ep->name);
         return 0;
 
 fail:
+        if (f->descriptors)
+                usb_free_descriptors(f->descriptors);
+        if (f->hs_descriptors)
+                usb_free_descriptors(f->hs_descriptors);
+
         /* we might as well release our claims on endpoints */
-        if (geth->port.out)
+        if (geth->port.out_ep->desc)
                 geth->port.out_ep->driver_data = NULL;
-        if (geth->port.in)
+        if (geth->port.in_ep->desc)
                 geth->port.in_ep->driver_data = NULL;
 
         ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
@@ -347,6 +392,8 @@ fail:
 static void
 geth_unbind(struct usb_configuration *c, struct usb_function *f)
 {
+        if (gadget_is_superspeed(c->cdev->gadget))
+                usb_free_descriptors(f->ss_descriptors);
         if (gadget_is_dualspeed(c->cdev->gadget))
                 usb_free_descriptors(f->hs_descriptors);
         usb_free_descriptors(f->descriptors);
diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c
index be446b7e7eaa..7a8b9aa4aea5 100644
--- a/drivers/usb/gadget/f_uvc.c
+++ b/drivers/usb/gadget/f_uvc.c
@@ -262,8 +262,10 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt)
                 if (uvc->state != UVC_STATE_CONNECTED)
                         return 0;
 
-                if (uvc->video.ep)
-                        usb_ep_enable(uvc->video.ep, &uvc_streaming_ep);
+                if (uvc->video.ep) {
+                        uvc->video.ep->desc = &uvc_streaming_ep;
+                        usb_ep_enable(uvc->video.ep);
+                }
 
                 memset(&v4l2_event, 0, sizeof(v4l2_event));
                 v4l2_event.type = UVC_EVENT_STREAMON;
@@ -649,7 +651,7 @@ uvc_bind_config(struct usb_configuration *c,
         if (ret)
                 kfree(uvc);
 
-        return 0;
+        return ret;
 
 error:
         kfree(uvc);
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 0360f56221ea..639e14a2fd15 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -929,6 +929,7 @@ static int standard_setup_req(struct fsg_dev *fsg,
 
                 case USB_DT_DEVICE:
                         VDBG(fsg, "get device descriptor\n");
+                        device_desc.bMaxPacketSize0 = fsg->ep0->maxpacket;
                         value = sizeof device_desc;
                         memcpy(req->buf, &device_desc, value);
                         break;
@@ -936,6 +937,11 @@ static int standard_setup_req(struct fsg_dev *fsg,
                         VDBG(fsg, "get device qualifier\n");
                         if (!gadget_is_dualspeed(fsg->gadget))
                                 break;
+                        /*
+                         * Assume ep0 uses the same maxpacket value for both
+                         * speeds
+                         */
+                        dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
                         value = sizeof dev_qualifier;
                         memcpy(req->buf, &dev_qualifier, value);
                         break;
@@ -2713,7 +2719,8 @@ static int enable_endpoint(struct fsg_dev *fsg, struct usb_ep *ep,
         int     rc;
 
         ep->driver_data = fsg;
-        rc = usb_ep_enable(ep, d);
+        ep->desc = d;
+        rc = usb_ep_enable(ep);
         if (rc)
                 ERROR(fsg, "can't enable %s, result %d\n", ep->name, rc);
         return rc;
@@ -3416,7 +3423,6 @@ static int __init fsg_bind(struct usb_gadget *gadget)
         }
 
         /* Fix up the descriptors */
-        device_desc.bMaxPacketSize0 = fsg->ep0->maxpacket;
         device_desc.idVendor = cpu_to_le16(mod_data.vendor);
         device_desc.idProduct = cpu_to_le16(mod_data.product);
         device_desc.bcdDevice = cpu_to_le16(mod_data.release);
@@ -3430,9 +3436,6 @@ static int __init fsg_bind(struct usb_gadget *gadget)
         if (gadget_is_dualspeed(gadget)) {
                 fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
 
-                /* Assume ep0 uses the same maxpacket value for both speeds */
-                dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
-
                 /* Assume endpoint addresses are the same for both speeds */
                 fsg_hs_bulk_in_desc.bEndpointAddress =
                         fsg_fs_bulk_in_desc.bEndpointAddress;
@@ -3486,6 +3489,8 @@ static int __init fsg_bind(struct usb_gadget *gadget)
         }
 
         INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
+        INFO(fsg, "NOTE: This driver is deprecated.  "
+                        "Consider using g_mass_storage instead.\n");
         INFO(fsg, "Number of LUNs=%d\n", fsg->nluns);
 
         pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index 3a68e09309f7..3bf872e1ad39 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -1927,6 +1927,10 @@ static int qe_pullup(struct usb_gadget *gadget, int is_on)
         return -ENOTSUPP;
 }
 
+static int fsl_qe_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int fsl_qe_stop(struct usb_gadget_driver *driver);
+
 /* defined in usb_gadget.h */
 static struct usb_gadget_ops qe_gadget_ops = {
         .get_frame = qe_get_frame,
@@ -1935,6 +1939,8 @@ static struct usb_gadget_ops qe_gadget_ops = {
         .vbus_session = qe_vbus_session,
         .vbus_draw = qe_vbus_draw,
         .pullup = qe_pullup,
+        .start = fsl_qe_start,
+        .stop = fsl_qe_stop,
 };
 
 /*-------------------------------------------------------------------------
@@ -2320,7 +2326,7 @@ static irqreturn_t qe_udc_irq(int irq, void *_udc)
 /*-------------------------------------------------------------------------
         Gadget driver probe and unregister.
  --------------------------------------------------------------------------*/
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int fsl_qe_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         int retval;
@@ -2369,9 +2375,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
                 udc_controller->gadget.name, driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int fsl_qe_stop(struct usb_gadget_driver *driver)
 {
         struct qe_ep *loop_ep;
         unsigned long flags;
@@ -2411,7 +2416,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
                         driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /* udc structure's alloc and setup, include ep-param alloc */
 static struct qe_udc __devinit *qe_udc_config(struct platform_device *ofdev)
@@ -2662,11 +2666,17 @@ static int __devinit qe_udc_probe(struct platform_device *ofdev)
         if (ret)
                 goto err6;
 
+        ret = usb_add_gadget_udc(&ofdev->dev, &udc_controller->gadget);
+        if (ret)
+                goto err7;
+
         dev_info(udc_controller->dev,
                         "%s USB controller initialized as device\n",
                         (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM");
         return 0;
 
+err7:
+        device_unregister(&udc_controller->gadget.dev);
 err6:
         free_irq(udc_controller->usb_irq, udc_controller);
 err5:
@@ -2721,6 +2731,8 @@ static int __devexit qe_udc_remove(struct platform_device *ofdev)
         if (!udc_controller)
                 return -ENODEV;
 
+        usb_del_gadget_udc(&udc_controller->gadget);
+
         udc_controller->done = &done;
         tasklet_disable(&udc_controller->rx_tasklet);
 
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index 3e59035e6de8..de24a4233c25 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -1244,6 +1244,9 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on)
         return 0;
 }
 
+static int fsl_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int fsl_stop(struct usb_gadget_driver *driver);
 /* defined in gadget.h */
 static struct usb_gadget_ops fsl_gadget_ops = {
         .get_frame = fsl_get_frame,
@@ -1252,6 +1255,8 @@ static struct usb_gadget_ops fsl_gadget_ops = {
         .vbus_session = fsl_vbus_session,
         .vbus_draw = fsl_vbus_draw,
         .pullup = fsl_pullup,
+        .start = fsl_start,
+        .stop = fsl_stop,
 };
 
 /* Set protocol stall on ep0, protocol stall will automatically be cleared
@@ -1927,7 +1932,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc)
  * Hook to gadget drivers
  * Called by initialization code of gadget drivers
 *----------------------------------------------------------------*/
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int fsl_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         int retval = -ENODEV;
@@ -1995,10 +2000,9 @@ out:
                        retval);
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /* Disconnect from gadget driver */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int fsl_stop(struct usb_gadget_driver *driver)
 {
         struct fsl_ep *loop_ep;
         unsigned long flags;
@@ -2041,7 +2045,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
                driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*-------------------------------------------------------------------------
                 PROC File System Support
@@ -2590,9 +2593,16 @@ static int __init fsl_udc_probe(struct platform_device *pdev)
                 ret = -ENOMEM;
                 goto err_unregister;
         }
+
+        ret = usb_add_gadget_udc(&pdev->dev, &udc_controller->gadget);
+        if (ret)
+                goto err_del_udc;
+
         create_proc_file();
         return 0;
 
+err_del_udc:
+        dma_pool_destroy(udc_controller->td_pool);
 err_unregister:
         device_unregister(&udc_controller->gadget.dev);
 err_free_irq:
@@ -2624,6 +2634,8 @@ static int __exit fsl_udc_remove(struct platform_device *pdev)
 
         if (!udc_controller)
                 return -ENODEV;
+
+        usb_del_gadget_udc(&udc_controller->gadget);
         udc_controller->done = &done;
 
         fsl_udc_clk_release();
diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c
index 763d462454b9..24a924330c81 100644
--- a/drivers/usb/gadget/fusb300_udc.c
+++ b/drivers/usb/gadget/fusb300_udc.c
@@ -767,56 +767,6 @@ static void fusb300_rdfifo(struct fusb300_ep *ep,
         } while (!reg);
 }
 
-/* write data to fifo */
-static void fusb300_wrfifo(struct fusb300_ep *ep,
-                           struct fusb300_request *req)
-{
-        int i = 0;
-        u8 *tmp;
-        u32 data, reg;
-        struct fusb300 *fusb300 = ep->fusb300;
-
-        tmp = req->req.buf;
-        req->req.actual = req->req.length;
-
-        for (i = (req->req.length >> 2); i > 0; i--) {
-                data = *tmp | *(tmp + 1) << 8 |
-                        *(tmp + 2) << 16 | *(tmp + 3) << 24;
-
-                iowrite32(data, fusb300->reg +
-                        FUSB300_OFFSET_EPPORT(ep->epnum));
-                tmp += 4;
-        }
-
-        switch (req->req.length % 4) {
-        case 1:
-                data = *tmp;
-                iowrite32(data, fusb300->reg +
-                        FUSB300_OFFSET_EPPORT(ep->epnum));
-                break;
-        case 2:
-                data = *tmp | *(tmp + 1) << 8;
-                iowrite32(data, fusb300->reg +
-                        FUSB300_OFFSET_EPPORT(ep->epnum));
-                break;
-        case 3:
-                data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16;
-                iowrite32(data, fusb300->reg +
-                        FUSB300_OFFSET_EPPORT(ep->epnum));
-                break;
-        default:
-                break;
-        }
-
-        do {
-                reg = ioread32(fusb300->reg + FUSB300_OFFSET_IGR1);
-                reg &= FUSB300_IGR1_SYNF0_EMPTY_INT;
-                if (i)
-                        printk(KERN_INFO"sync fifo is not empty!\n");
-                i++;
-        } while (!reg);
-}
-
 static u8 fusb300_get_epnstall(struct fusb300 *fusb300, u8 ep)
 {
         u8 value;
@@ -980,11 +930,6 @@ static void set_address(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
                 } \
         } while (0)
 
-static void fusb300_ep0_complete(struct usb_ep *ep,
-                                struct usb_request *req)
-{
-}
-
 static int setup_packet(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
 {
         u8 *p = (u8 *)ctrl;
@@ -1029,17 +974,6 @@ static int setup_packet(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
         return ret;
 }
 
-static void fusb300_set_ep_bycnt(struct fusb300_ep *ep, u32 bycnt)
-{
-        struct fusb300 *fusb300 = ep->fusb300;
-        u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPFFR(ep->epnum));
-
-        reg &= ~FUSB300_FFR_BYCNT;
-        reg |= bycnt & FUSB300_FFR_BYCNT;
-
-        iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPFFR(ep->epnum));
-}
-
 static void done(struct fusb300_ep *ep, struct fusb300_request *req,
                  int status)
 {
@@ -1063,8 +997,8 @@ static void done(struct fusb300_ep *ep, struct fusb300_request *req,
                 fusb300_set_cxdone(ep->fusb300);
 }
 
-void fusb300_fill_idma_prdtbl(struct fusb300_ep *ep,
-                        struct fusb300_request *req)
+static void fusb300_fill_idma_prdtbl(struct fusb300_ep *ep, dma_addr_t d,
+                u32 len)
 {
         u32 value;
         u32 reg;
@@ -1076,10 +1010,9 @@ void fusb300_fill_idma_prdtbl(struct fusb300_ep *ep,
                 reg &= FUSB300_EPPRD0_H;
         } while (reg);
 
-        iowrite32((u32) req->req.buf, ep->fusb300->reg +
-                FUSB300_OFFSET_EPPRD_W1(ep->epnum));
+        iowrite32(d, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W1(ep->epnum));
 
-        value = FUSB300_EPPRD0_BTC(req->req.length) | FUSB300_EPPRD0_H |
+        value = FUSB300_EPPRD0_BTC(len) | FUSB300_EPPRD0_H |
                 FUSB300_EPPRD0_F | FUSB300_EPPRD0_L | FUSB300_EPPRD0_I;
         iowrite32(value, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W0(ep->epnum));
 
@@ -1116,13 +1049,12 @@ static void  fusb300_set_idma(struct fusb300_ep *ep,
                         struct fusb300_request *req)
 {
         dma_addr_t d;
-        u8 *tmp = NULL;
 
         d = dma_map_single(NULL, req->req.buf, req->req.length, DMA_TO_DEVICE);
 
         if (dma_mapping_error(NULL, d)) {
-                kfree(req->req.buf);
                 printk(KERN_DEBUG "dma_mapping_error\n");
+                return;
         }
 
         dma_sync_single_for_device(NULL, d, req->req.length, DMA_TO_DEVICE);
@@ -1130,17 +1062,11 @@ static void  fusb300_set_idma(struct fusb300_ep *ep,
         fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_IGER0,
                 FUSB300_IGER0_EEPn_PRD_INT(ep->epnum));
 
-        tmp = req->req.buf;
-        req->req.buf = (u8 *)d;
-
-        fusb300_fill_idma_prdtbl(ep, req);
+        fusb300_fill_idma_prdtbl(ep, d, req->req.length);
         /* check idma is done */
         fusb300_wait_idma_finished(ep);
 
-        req->req.buf = tmp;
-
-        if (d)
-                dma_unmap_single(NULL, d, req->req.length, DMA_TO_DEVICE);
+        dma_unmap_single(NULL, d, req->req.length, DMA_TO_DEVICE);
 }
 
 static void in_ep_fifo_handler(struct fusb300_ep *ep)
@@ -1148,14 +1074,8 @@ static void in_ep_fifo_handler(struct fusb300_ep *ep)
         struct fusb300_request *req = list_entry(ep->queue.next,
                                         struct fusb300_request, queue);
 
-        if (req->req.length) {
-#if 0
-                fusb300_set_ep_bycnt(ep, req->req.length);
-                fusb300_wrfifo(ep, req);
-#else
+        if (req->req.length)
                 fusb300_set_idma(ep, req);
-#endif
-        }
         done(ep, req, 0);
 }
 
@@ -1500,7 +1420,7 @@ static void init_controller(struct fusb300 *fusb300)
 /*------------------------------------------------------------------------*/
 static struct fusb300 *the_controller;
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int fusb300_udc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct fusb300 *fusb300 = the_controller;
@@ -1544,9 +1464,8 @@ error:
 
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int fusb300_udc_stop(struct usb_gadget_driver *driver)
 {
         struct fusb300 *fusb300 = the_controller;
 
@@ -1562,7 +1481,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 /*--------------------------------------------------------------------------*/
 
 static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active)
@@ -1572,12 +1490,15 @@ static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active)
 
 static struct usb_gadget_ops fusb300_gadget_ops = {
         .pullup         = fusb300_udc_pullup,
+        .start          = fusb300_udc_start,
+        .stop           = fusb300_udc_stop,
 };
 
 static int __exit fusb300_remove(struct platform_device *pdev)
 {
         struct fusb300 *fusb300 = dev_get_drvdata(&pdev->dev);
 
+        usb_del_gadget_udc(&fusb300->gadget);
         iounmap(fusb300->reg);
         free_irq(platform_get_irq(pdev, 0), fusb300);
 
@@ -1702,9 +1623,15 @@ static int __init fusb300_probe(struct platform_device *pdev)
                 goto clean_up3;
 
         init_controller(fusb300);
+        ret = usb_add_gadget_udc(&pdev->dev, &fusb300->gadget);
+        if (ret)
+                goto err_add_udc;
+
         dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
 
         return 0;
+err_add_udc:
+        fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req);
 
 clean_up3:
         free_irq(ires->start, fusb300);
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index ebf6970a10bf..704c2800ac00 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -162,6 +162,7 @@ static struct usb_composite_driver gfs_driver = {
         .name           = DRIVER_NAME,
         .dev            = &gfs_dev_desc,
         .strings        = gfs_dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = gfs_unbind,
         .iProduct       = DRIVER_DESC,
 };
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index bcdac7c73e89..f3a83cd0ef50 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -15,150 +15,40 @@
 #ifndef __GADGET_CHIPS_H
 #define __GADGET_CHIPS_H
 
-#ifdef CONFIG_USB_GADGET_NET2280
-#define gadget_is_net2280(g)    !strcmp("net2280", (g)->name)
-#else
-#define gadget_is_net2280(g)    0
-#endif
-
-#ifdef CONFIG_USB_GADGET_AMD5536UDC
-#define gadget_is_amd5536udc(g) !strcmp("amd5536udc", (g)->name)
-#else
-#define gadget_is_amd5536udc(g) 0
-#endif
-
-#ifdef CONFIG_USB_GADGET_DUMMY_HCD
-#define gadget_is_dummy(g)      !strcmp("dummy_udc", (g)->name)
-#else
-#define gadget_is_dummy(g)      0
-#endif
-
-#ifdef CONFIG_USB_GADGET_PXA25X
-#define gadget_is_pxa(g)        !strcmp("pxa25x_udc", (g)->name)
-#else
-#define gadget_is_pxa(g)        0
-#endif
-
-#ifdef CONFIG_USB_GADGET_GOKU
-#define gadget_is_goku(g)       !strcmp("goku_udc", (g)->name)
-#else
-#define gadget_is_goku(g)       0
-#endif
-
-#ifdef CONFIG_USB_GADGET_OMAP
-#define gadget_is_omap(g)       !strcmp("omap_udc", (g)->name)
-#else
-#define gadget_is_omap(g)       0
-#endif
-
-/* various unstable versions available */
-#ifdef CONFIG_USB_GADGET_PXA27X
-#define gadget_is_pxa27x(g)     !strcmp("pxa27x_udc", (g)->name)
-#else
-#define gadget_is_pxa27x(g)     0
-#endif
-
-#ifdef CONFIG_USB_GADGET_ATMEL_USBA
-#define gadget_is_atmel_usba(g) !strcmp("atmel_usba_udc", (g)->name)
-#else
-#define gadget_is_atmel_usba(g) 0
-#endif
-
-#ifdef CONFIG_USB_GADGET_S3C2410
-#define gadget_is_s3c2410(g)    !strcmp("s3c2410_udc", (g)->name)
-#else
-#define gadget_is_s3c2410(g)    0
-#endif
-
-#ifdef CONFIG_USB_GADGET_AT91
-#define gadget_is_at91(g)       !strcmp("at91_udc", (g)->name)
-#else
-#define gadget_is_at91(g)       0
-#endif
-
-#ifdef CONFIG_USB_GADGET_IMX
-#define gadget_is_imx(g)        !strcmp("imx_udc", (g)->name)
-#else
-#define gadget_is_imx(g)        0
-#endif
-
-#ifdef CONFIG_USB_GADGET_FSL_USB2
-#define gadget_is_fsl_usb2(g)   !strcmp("fsl-usb2-udc", (g)->name)
-#else
-#define gadget_is_fsl_usb2(g)   0
-#endif
-
-/* Mentor high speed "dual role" controller, in peripheral role */
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
-#define gadget_is_musbhdrc(g)   !strcmp("musb-hdrc", (g)->name)
-#else
-#define gadget_is_musbhdrc(g)   0
-#endif
-
-#ifdef CONFIG_USB_GADGET_LANGWELL
-#define gadget_is_langwell(g)   (!strcmp("langwell_udc", (g)->name))
-#else
-#define gadget_is_langwell(g)   0
-#endif
-
-#ifdef CONFIG_USB_GADGET_M66592
-#define gadget_is_m66592(g)     !strcmp("m66592_udc", (g)->name)
-#else
-#define gadget_is_m66592(g)     0
-#endif
-
-/* Freescale CPM/QE UDC SUPPORT */
-#ifdef CONFIG_USB_GADGET_FSL_QE
-#define gadget_is_fsl_qe(g)     !strcmp("fsl_qe_udc", (g)->name)
-#else
-#define gadget_is_fsl_qe(g)     0
-#endif
-
-#ifdef CONFIG_USB_GADGET_CI13XXX_PCI
-#define gadget_is_ci13xxx_pci(g)        (!strcmp("ci13xxx_pci", (g)->name))
-#else
-#define gadget_is_ci13xxx_pci(g)        0
-#endif
-
-// CONFIG_USB_GADGET_SX2
-// CONFIG_USB_GADGET_AU1X00
-// ...
-
-#ifdef CONFIG_USB_GADGET_R8A66597
-#define gadget_is_r8a66597(g)   !strcmp("r8a66597_udc", (g)->name)
-#else
-#define gadget_is_r8a66597(g)   0
-#endif
-
-#ifdef CONFIG_USB_S3C_HSOTG
-#define gadget_is_s3c_hsotg(g)    (!strcmp("s3c-hsotg", (g)->name))
-#else
-#define gadget_is_s3c_hsotg(g)    0
-#endif
-
-#ifdef CONFIG_USB_S3C_HSUDC
-#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name))
-#else
-#define gadget_is_s3c_hsudc(g) 0
-#endif
-
-#ifdef CONFIG_USB_GADGET_EG20T
-#define gadget_is_pch(g)        (!strcmp("pch_udc", (g)->name))
-#else
-#define gadget_is_pch(g)        0
-#endif
-
-#ifdef CONFIG_USB_GADGET_CI13XXX_MSM
+/*
+ * NOTICE: the entries below are alphabetical and should be kept
+ * that way.
+ *
+ * Always be sure to add new entries to the correct position or
+ * accept the bashing later.
+ *
+ * If you have forgotten the alphabetical order let VIM/EMACS
+ * do that for you.
+ */
+#define gadget_is_amd5536udc(g)         (!strcmp("amd5536udc", (g)->name))
+#define gadget_is_at91(g)               (!strcmp("at91_udc", (g)->name))
+#define gadget_is_atmel_usba(g)         (!strcmp("atmel_usba_udc", (g)->name))
 #define gadget_is_ci13xxx_msm(g)        (!strcmp("ci13xxx_msm", (g)->name))
-#else
-#define gadget_is_ci13xxx_msm(g)        0
-#endif
-
-#ifdef CONFIG_USB_GADGET_RENESAS_USBHS
-#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name))
-#else
-#define gadget_is_renesas_usbhs(g) 0
-#endif
+#define gadget_is_ci13xxx_pci(g)        (!strcmp("ci13xxx_pci", (g)->name))
+#define gadget_is_dummy(g)              (!strcmp("dummy_udc", (g)->name))
+#define gadget_is_fsl_qe(g)             (!strcmp("fsl_qe_udc", (g)->name))
+#define gadget_is_fsl_usb2(g)           (!strcmp("fsl-usb2-udc", (g)->name))
+#define gadget_is_goku(g)               (!strcmp("goku_udc", (g)->name))
+#define gadget_is_imx(g)                (!strcmp("imx_udc", (g)->name))
+#define gadget_is_langwell(g)           (!strcmp("langwell_udc", (g)->name))
+#define gadget_is_m66592(g)             (!strcmp("m66592_udc", (g)->name))
+#define gadget_is_musbhdrc(g)           (!strcmp("musb-hdrc", (g)->name))
+#define gadget_is_net2272(g)            (!strcmp("net2272", (g)->name))
+#define gadget_is_net2280(g)            (!strcmp("net2280", (g)->name))
+#define gadget_is_omap(g)               (!strcmp("omap_udc", (g)->name))
+#define gadget_is_pch(g)                (!strcmp("pch_udc", (g)->name))
+#define gadget_is_pxa(g)                (!strcmp("pxa25x_udc", (g)->name))
+#define gadget_is_pxa27x(g)             (!strcmp("pxa27x_udc", (g)->name))
+#define gadget_is_r8a66597(g)           (!strcmp("r8a66597_udc", (g)->name))
+#define gadget_is_renesas_usbhs(g)      (!strcmp("renesas_usbhs_udc", (g)->name))
+#define gadget_is_s3c2410(g)            (!strcmp("s3c2410_udc", (g)->name))
+#define gadget_is_s3c_hsotg(g)          (!strcmp("s3c-hsotg", (g)->name))
+#define gadget_is_s3c_hsudc(g)          (!strcmp("s3c-hsudc", (g)->name))
 
 /**
  * usb_gadget_controller_number - support bcdDevice id convention
@@ -223,6 +113,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
                 return 0x29;
         else if (gadget_is_s3c_hsudc(gadget))
                 return 0x30;
+        else if (gadget_is_net2272(gadget))
+                return 0x31;
 
         return -ENOENT;
 }
diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c
index 47b86b99d449..8b9220e128a7 100644
--- a/drivers/usb/gadget/gmidi.c
+++ b/drivers/usb/gadget/gmidi.c
@@ -537,14 +537,16 @@ static int set_gmidi_config(struct gmidi_device *dev, gfp_t gfp_flags)
         struct usb_ep *ep;
         unsigned i;
 
-        err = usb_ep_enable(dev->in_ep, &bulk_in_desc);
+        dev->in_ep->desc = &bulk_in_desc;
+        err = usb_ep_enable(dev->in_ep);
         if (err) {
                 ERROR(dev, "can't start %s: %d\n", dev->in_ep->name, err);
                 goto fail;
         }
         dev->in_ep->driver_data = dev;
 
-        err = usb_ep_enable(dev->out_ep, &bulk_out_desc);
+        dev->out_ep->desc = &bulk_out_desc;
+        err = usb_ep_enable(dev->out_ep);
         if (err) {
                 ERROR(dev, "can't start %s: %d\n", dev->out_ep->name, err);
                 goto fail;
@@ -693,6 +695,7 @@ static int gmidi_setup(struct usb_gadget *gadget,
                 switch (w_value >> 8) {
 
                 case USB_DT_DEVICE:
+                        device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
                         value = min(w_length, (u16) sizeof(device_desc));
                         memcpy(req->buf, &device_desc, value);
                         break;
@@ -1247,8 +1250,6 @@ autoconf_fail:
 
         dev->req->complete = gmidi_setup_complete;
 
-        device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
-
         gadget->ep0->driver_data = dev;
 
         INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname);
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index bf6e11c758d5..7f87805cddc4 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -996,8 +996,14 @@ static int goku_get_frame(struct usb_gadget *_gadget)
         return -EOPNOTSUPP;
 }
 
+static int goku_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int goku_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops goku_ops = {
         .get_frame      = goku_get_frame,
+        .start          = goku_start,
+        .stop           = goku_stop,
         // no remote wakeup
         // not selfpowered
 };
@@ -1344,7 +1350,7 @@ static struct goku_udc	*the_controller;
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int goku_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct goku_udc *dev = the_controller;
@@ -1382,7 +1388,6 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
         DBG(dev, "registered gadget driver '%s'\n", driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver)
@@ -1408,7 +1413,7 @@ stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver)
                 udc_enable(dev);
 }
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int goku_stop(struct usb_gadget_driver *driver)
 {
         struct goku_udc *dev = the_controller;
         unsigned long   flags;
@@ -1429,8 +1434,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         DBG(dev, "unregistered driver '%s'\n", driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
 
 /*-------------------------------------------------------------------------*/
 
@@ -1730,6 +1733,8 @@ static void goku_remove(struct pci_dev *pdev)
 
         DBG(dev, "%s\n", __func__);
 
+        usb_del_gadget_udc(&dev->gadget);
+
         BUG_ON(dev->driver);
 
 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
@@ -1854,6 +1859,10 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id)
                 goto err;
         }
         dev->registered = 1;
+        retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+        if (retval)
+                goto err;
+
         return 0;
 
 err:
diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c
index 2523e54097bd..9fb575034a0e 100644
--- a/drivers/usb/gadget/hid.c
+++ b/drivers/usb/gadget/hid.c
@@ -255,6 +255,7 @@ static struct usb_composite_driver hidg_driver = {
         .name           = "g_hid",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = __exit_p(hid_unbind),
 };
 
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
index ade40066decf..692fd9b2248b 100644
--- a/drivers/usb/gadget/imx_udc.c
+++ b/drivers/usb/gadget/imx_udc.c
@@ -1237,9 +1237,14 @@ irq_handler_t intr_handler(int i)
  *******************************************************************************
  */
 
+static int imx_udc_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int imx_udc_stop(struct usb_gadget_driver *driver);
 static const struct usb_gadget_ops imx_udc_ops = {
         .get_frame       = imx_udc_get_frame,
         .wakeup          = imx_udc_wakeup,
+        .start          = imx_udc_start,
+        .stop           = imx_udc_stop,
 };
 
 static struct imx_udc_struct controller = {
@@ -1324,7 +1329,7 @@ static struct imx_udc_struct controller = {
  * USB gadget driver functions
  *******************************************************************************
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int imx_udc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct imx_udc_struct *imx_usb = &controller;
@@ -1368,9 +1373,8 @@ fail:
         imx_usb->gadget.dev.driver = NULL;
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int imx_udc_stop(struct usb_gadget_driver *driver)
 {
         struct imx_udc_struct *imx_usb = &controller;
 
@@ -1394,7 +1398,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*******************************************************************************
  * Module functions
@@ -1504,8 +1507,14 @@ static int __init imx_udc_probe(struct platform_device *pdev)
         imx_usb->timer.function = handle_config;
         imx_usb->timer.data = (unsigned long)imx_usb;
 
-        return 0;
+        ret = usb_add_gadget_udc(&pdev->dev, &imx_usb->gadget);
+        if (ret)
+                goto fail4;
 
+        return 0;
+fail4:
+        for (i = 0; i < IMX_USB_NB_EP + 1; i++)
+                free_irq(imx_usb->usbd_int[i], imx_usb);
 fail3:
         clk_put(clk);
         clk_disable(clk);
@@ -1525,6 +1534,7 @@ static int __exit imx_udc_remove(struct platform_device *pdev)
         struct imxusb_platform_data *pdata = pdev->dev.platform_data;
         int i;
 
+        usb_del_gadget_udc(&imx_usb->gadget);
         imx_udc_disable(imx_usb);
         del_timer(&imx_usb->timer);
 
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index a56876aaf76c..1b240990448f 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -832,14 +832,16 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
         switch (data->dev->gadget->speed) {
         case USB_SPEED_LOW:
         case USB_SPEED_FULL:
-                value = usb_ep_enable (ep, &data->desc);
+                ep->desc = &data->desc;
+                value = usb_ep_enable(ep);
                 if (value == 0)
                         data->state = STATE_EP_ENABLED;
                 break;
 #ifdef  CONFIG_USB_GADGET_DUALSPEED
         case USB_SPEED_HIGH:
                 /* fails if caller didn't provide that descriptor... */
-                value = usb_ep_enable (ep, &data->hs_desc);
+                ep->desc = &data->hs_desc;
+                value = usb_ep_enable(ep);
                 if (value == 0)
                         data->state = STATE_EP_ENABLED;
                 break;
@@ -1345,7 +1347,7 @@ static void make_qualifier (struct dev_data *dev)
         qual.bDeviceProtocol = desc->bDeviceProtocol;
 
         /* assumes ep0 uses the same value for both speeds ... */
-        qual.bMaxPacketSize0 = desc->bMaxPacketSize0;
+        qual.bMaxPacketSize0 = dev->gadget->ep0->maxpacket;
 
         qual.bNumConfigurations = 1;
         qual.bRESERVED = 0;
@@ -1402,7 +1404,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                 }
 
                 dev->state = STATE_DEV_CONNECTED;
-                dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
 
                 INFO (dev, "connected\n");
                 event = next_event (dev, GADGETFS_CONNECT);
@@ -1430,6 +1431,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 
                 case USB_DT_DEVICE:
                         value = min (w_length, (u16) sizeof *dev->dev);
+                        dev->dev->bMaxPacketSize0 = dev->gadget->ep0->maxpacket;
                         req->buf = dev->dev;
                         break;
 #ifdef  CONFIG_USB_GADGET_DUALSPEED
@@ -1710,7 +1712,6 @@ gadgetfs_bind (struct usb_gadget *gadget)
         set_gadget_data (gadget, dev);
         dev->gadget = gadget;
         gadget->ep0->driver_data = dev;
-        dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
 
         /* preallocate control response and buffer */
         dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index 9cee88a43a73..a06e2c27b435 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -593,8 +593,8 @@ static int queue_dtd(struct langwell_ep *ep, struct langwell_request *req)
                 /* ep0 */
                 dev_vdbg(&dev->pdev->dev, "%s-%s\n", ep->name, DIR_STRING(ep));
 
-        dev_vdbg(&dev->pdev->dev, "ep_dqh[%d] addr: 0x%08x\n",
-                        i, (u32)&(dev->ep_dqh[i]));
+        dev_vdbg(&dev->pdev->dev, "ep_dqh[%d] addr: 0x%p\n",
+                        i, &(dev->ep_dqh[i]));
 
         bit_mask = is_in(ep) ?
                 (1 << (ep->ep_num + 16)) : (1 << (ep->ep_num));
@@ -1321,7 +1321,9 @@ static int langwell_pullup(struct usb_gadget *_gadget, int is_on)
         return 0;
 }
 
-
+static int langwell_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int langwell_stop(struct usb_gadget_driver *driver);
 /* device controller usb_gadget_ops structure */
 static const struct usb_gadget_ops langwell_ops = {
 
@@ -1342,6 +1344,9 @@ static const struct usb_gadget_ops langwell_ops = {
 
         /* D+ pullup, software-controlled connect/disconnect to USB host */
         .pullup         = langwell_pullup,
+
+        .start          = langwell_start,
+        .stop           = langwell_stop,
 };
 
 
@@ -1852,7 +1857,7 @@ static DEVICE_ATTR(remote_wakeup, S_IWUSR, NULL, store_remote_wakeup);
  * the driver might get unbound.
  */
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int langwell_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct langwell_udc     *dev = the_controller;
@@ -1914,11 +1919,9 @@ err_unbind:
         dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__);
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
-
 
 /* unregister gadget driver */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int langwell_stop(struct usb_gadget_driver *driver)
 {
         struct langwell_udc     *dev = the_controller;
         unsigned long           flags;
@@ -1965,8 +1968,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
 
 /*-------------------------------------------------------------------------*/
 
@@ -3270,7 +3271,7 @@ static int langwell_udc_probe(struct pci_dev *pdev,
 
         /* allocate device dQH memory */
         size = dev->ep_max * sizeof(struct langwell_dqh);
-        dev_vdbg(&dev->pdev->dev, "orig size = %d\n", size);
+        dev_vdbg(&dev->pdev->dev, "orig size = %zd\n", size);
         if (size < DQH_ALIGNMENT)
                 size = DQH_ALIGNMENT;
         else if ((size % DQH_ALIGNMENT) != 0) {
@@ -3285,7 +3286,7 @@ static int langwell_udc_probe(struct pci_dev *pdev,
                 goto error;
         }
         dev->ep_dqh_size = size;
-        dev_vdbg(&dev->pdev->dev, "ep_dqh_size = %d\n", dev->ep_dqh_size);
+        dev_vdbg(&dev->pdev->dev, "ep_dqh_size = %zd\n", dev->ep_dqh_size);
 
         /* initialize ep0 status request structure */
         dev->status_req = kzalloc(sizeof(struct langwell_request), GFP_KERNEL);
@@ -3373,6 +3374,10 @@ static int langwell_udc_probe(struct pci_dev *pdev,
         if (retval)
                 goto error;
 
+        retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+        if (retval)
+                goto error;
+
         retval = device_create_file(&pdev->dev, &dev_attr_langwell_udc);
         if (retval)
                 goto error;
@@ -3403,6 +3408,7 @@ static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state)
 
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
+        usb_del_gadget_udc(&dev->gadget);
         /* disable interrupt and set controller to stop state */
         langwell_udc_stop(dev);
 
@@ -3464,7 +3470,7 @@ static int langwell_udc_resume(struct pci_dev *pdev)
 
         /* allocate device dQH memory */
         size = dev->ep_max * sizeof(struct langwell_dqh);
-        dev_vdbg(&dev->pdev->dev, "orig size = %d\n", size);
+        dev_vdbg(&dev->pdev->dev, "orig size = %zd\n", size);
         if (size < DQH_ALIGNMENT)
                 size = DQH_ALIGNMENT;
         else if ((size % DQH_ALIGNMENT) != 0) {
@@ -3478,7 +3484,7 @@ static int langwell_udc_resume(struct pci_dev *pdev)
                 return -ENOMEM;
         }
         dev->ep_dqh_size = size;
-        dev_vdbg(&dev->pdev->dev, "ep_dqh_size = %d\n", dev->ep_dqh_size);
+        dev_vdbg(&dev->pdev->dev, "ep_dqh_size = %zd\n", dev->ep_dqh_size);
 
         /* create dTD dma_pool resource */
         dev->dtd_pool = dma_pool_create("langwell_dtd",
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 084aa080a2d5..491f825ed5c9 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2006-2007 Renesas Solutions Corp.
  *
- * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  *
  * 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
@@ -691,6 +691,7 @@ static void init_controller(struct m66592 *m66592)
 
 static void disable_controller(struct m66592 *m66592)
 {
+        m66592_bclr(m66592, M66592_UTST, M66592_TESTMODE);
         if (!m66592->pdata->on_chip) {
                 m66592_bclr(m66592, M66592_SCKE, M66592_SYSCFG);
                 udelay(1);
@@ -780,7 +781,7 @@ static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req)
         /* write fifo */
         if (req->req.buf) {
                 if (size > 0)
-                        m66592_write_fifo(m66592, ep->fifoaddr, buf, size);
+                        m66592_write_fifo(m66592, ep, buf, size);
                 if ((size == 0) || ((size % ep->ep.maxpacket) != 0))
                         m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
         }
@@ -826,7 +827,7 @@ static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req)
 
         /* write fifo */
         if (req->req.buf) {
-                m66592_write_fifo(m66592, ep->fifoaddr, buf, size);
+                m66592_write_fifo(m66592, ep, buf, size);
                 if ((size == 0)
                                 || ((size % ep->ep.maxpacket) != 0)
                                 || ((bufsize != ep->ep.maxpacket)
@@ -1048,10 +1049,30 @@ static void clear_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
 
 static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
 {
+        u16 tmp;
+        int timeout = 3000;
 
         switch (ctrl->bRequestType & USB_RECIP_MASK) {
         case USB_RECIP_DEVICE:
-                control_end(m66592, 1);
+                switch (le16_to_cpu(ctrl->wValue)) {
+                case USB_DEVICE_TEST_MODE:
+                        control_end(m66592, 1);
+                        /* Wait for the completion of status stage */
+                        do {
+                                tmp = m66592_read(m66592, M66592_INTSTS0) &
+                                                                M66592_CTSQ;
+                                udelay(1);
+                        } while (tmp != M66592_CS_IDST || timeout-- > 0);
+
+                        if (tmp == M66592_CS_IDST)
+                                m66592_bset(m66592,
+                                            le16_to_cpu(ctrl->wIndex >> 8),
+                                            M66592_TESTMODE);
+                        break;
+                default:
+                        pipe_stall(m66592, 0);
+                        break;
+                }
                 break;
         case USB_RECIP_INTERFACE:
                 control_end(m66592, 1);
@@ -1454,7 +1475,7 @@ static struct usb_ep_ops m66592_ep_ops = {
 /*-------------------------------------------------------------------------*/
 static struct m66592 *the_controller;
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int m66592_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct m66592 *m66592 = the_controller;
@@ -1506,9 +1527,8 @@ error:
 
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int m66592_stop(struct usb_gadget_driver *driver)
 {
         struct m66592 *m66592 = the_controller;
         unsigned long flags;
@@ -1533,7 +1553,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         m66592->driver = NULL;
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*-------------------------------------------------------------------------*/
 static int m66592_get_frame(struct usb_gadget *_gadget)
@@ -1542,14 +1561,34 @@ static int m66592_get_frame(struct usb_gadget *_gadget)
         return m66592_read(m66592, M66592_FRMNUM) & 0x03FF;
 }
 
+static int m66592_pullup(struct usb_gadget *gadget, int is_on)
+{
+        struct m66592 *m66592 = gadget_to_m66592(gadget);
+        unsigned long flags;
+
+        spin_lock_irqsave(&m66592->lock, flags);
+        if (is_on)
+                m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG);
+        else
+                m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
+        spin_unlock_irqrestore(&m66592->lock, flags);
+
+        return 0;
+}
+
 static struct usb_gadget_ops m66592_gadget_ops = {
         .get_frame              = m66592_get_frame,
+        .start                  = m66592_start,
+        .stop                   = m66592_stop,
+        .pullup                 = m66592_pullup,
 };
 
 static int __exit m66592_remove(struct platform_device *pdev)
 {
         struct m66592           *m66592 = dev_get_drvdata(&pdev->dev);
 
+        usb_del_gadget_udc(&m66592->gadget);
+
         del_timer_sync(&m66592->timer);
         iounmap(m66592->reg);
         free_irq(platform_get_irq(pdev, 0), m66592);
@@ -1691,9 +1730,16 @@ static int __init m66592_probe(struct platform_device *pdev)
 
         init_controller(m66592);
 
+        ret = usb_add_gadget_udc(&pdev->dev, &m66592->gadget);
+        if (ret)
+                goto err_add_udc;
+
         dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
         return 0;
 
+err_add_udc:
+        m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
+
 clean_up3:
 #ifdef CONFIG_HAVE_CLK
         if (m66592->pdata->on_chip) {
diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h
index c3caf1ac73ce..7b93d579af37 100644
--- a/drivers/usb/gadget/m66592-udc.h
+++ b/drivers/usb/gadget/m66592-udc.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2006-2007 Renesas Solutions Corp.
  *
- * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  *
  * 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
@@ -561,11 +561,26 @@ static inline void m66592_write(struct m66592 *m66592, u16 val,
         iowrite16(val, m66592->reg + offset);
 }
 
+static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat,
+                unsigned long offset)
+{
+        u16 tmp;
+        tmp = m66592_read(m66592, offset);
+        tmp = tmp & (~pat);
+        tmp = tmp | val;
+        m66592_write(m66592, tmp, offset);
+}
+
+#define m66592_bclr(m66592, val, offset)        \
+                        m66592_mdfy(m66592, 0, val, offset)
+#define m66592_bset(m66592, val, offset)        \
+                        m66592_mdfy(m66592, val, 0, offset)
+
 static inline void m66592_write_fifo(struct m66592 *m66592,
-                unsigned long offset,
+                struct m66592_ep *ep,
                 void *buf, unsigned long len)
 {
-        void __iomem *fifoaddr = m66592->reg + offset;
+        void __iomem *fifoaddr = m66592->reg + ep->fifoaddr;
 
         if (m66592->pdata->on_chip) {
                 unsigned long count;
@@ -591,26 +606,15 @@ static inline void m66592_write_fifo(struct m66592 *m66592,
                 iowrite16_rep(fifoaddr, buf, len);
                 if (odd) {
                         unsigned char *p = buf + len*2;
+                        if (m66592->pdata->wr0_shorted_to_wr1)
+                                m66592_bclr(m66592, M66592_MBW_16, ep->fifosel);
                         iowrite8(*p, fifoaddr);
+                        if (m66592->pdata->wr0_shorted_to_wr1)
+                                m66592_bset(m66592, M66592_MBW_16, ep->fifosel);
                 }
         }
 }
 
-static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat,
-                unsigned long offset)
-{
-        u16 tmp;
-        tmp = m66592_read(m66592, offset);
-        tmp = tmp & (~pat);
-        tmp = tmp | val;
-        m66592_write(m66592, tmp, offset);
-}
-
-#define m66592_bclr(m66592, val, offset)        \
-                        m66592_mdfy(m66592, 0, val, offset)
-#define m66592_bset(m66592, val, offset)        \
-                        m66592_mdfy(m66592, val, 0, offset)
-
 #endif  /* ifndef __M66592_UDC_H__ */
 
 
diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c
index 01822422c3e8..d3eb27427c58 100644
--- a/drivers/usb/gadget/mass_storage.c
+++ b/drivers/usb/gadget/mass_storage.c
@@ -169,6 +169,7 @@ static struct usb_composite_driver msg_driver = {
         .name           = "g_mass_storage",
         .dev            = &msg_device_desc,
         .iProduct       = DRIVER_DESC,
+        .max_speed      = USB_SPEED_HIGH,
         .needs_serial   = 1,
 };
 
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index d9feced348e3..8c7b74717d85 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -351,6 +351,7 @@ static struct usb_composite_driver multi_driver = {
         .name           = "g_multi",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = __exit_p(multi_unbind),
         .iProduct       = DRIVER_DESC,
         .needs_serial   = 1,
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index b1a8146b9d50..ce1ac2bcb314 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1128,6 +1128,9 @@ static int mv_udc_pullup(struct usb_gadget *gadget, int is_on)
         return 0;
 }
 
+static int mv_udc_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int mv_udc_stop(struct usb_gadget_driver *driver);
 /* device controller usb_gadget_ops structure */
 static const struct usb_gadget_ops mv_ops = {
 
@@ -1139,6 +1142,8 @@ static const struct usb_gadget_ops mv_ops = {
 
         /* D+ pullup, software-controlled connect/disconnect to USB host */
         .pullup         = mv_udc_pullup,
+        .start          = mv_udc_start,
+        .stop           = mv_udc_stop,
 };
 
 static void mv_udc_testmode(struct mv_udc *udc, u16 index, bool enter)
@@ -1230,7 +1235,7 @@ static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver)
         }
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int mv_udc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct mv_udc *udc = the_controller;
@@ -1270,9 +1275,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int mv_udc_stop(struct usb_gadget_driver *driver)
 {
         struct mv_udc *udc = the_controller;
         unsigned long flags;
@@ -1296,7 +1300,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 static int
 udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty)
@@ -1880,9 +1883,10 @@ static void gadget_release(struct device *_dev)
 static int mv_udc_remove(struct platform_device *dev)
 {
         struct mv_udc *udc = the_controller;
-
         DECLARE_COMPLETION(done);
 
+        usb_del_gadget_udc(&udc->gadget);
+
         udc->done = &done;
 
         /* free memory allocated in probe */
@@ -2074,11 +2078,12 @@ int mv_udc_probe(struct platform_device *dev)
 
         the_controller = udc;
 
-        goto out;
+        retval = usb_add_gadget_udc(&dev->dev, &udc->gadget);
+        if (!retval)
+                return retval;
 error:
         if (udc)
                 mv_udc_remove(udc->dev);
-out:
         return retval;
 }
 
@@ -2126,7 +2131,7 @@ static struct platform_driver udc_driver = {
 #endif
         },
 };
-
+MODULE_ALIAS("platform:pxa-u2o");
 
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR("Chao Xie <chao.xie@marvell.com>");
diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c
index 99c179ad729d..62ee5087dcac 100644
--- a/drivers/usb/gadget/ncm.c
+++ b/drivers/usb/gadget/ncm.c
@@ -228,6 +228,7 @@ static struct usb_composite_driver ncm_driver = {
         .name           = "g_ncm",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = __exit_p(gncm_unbind),
 };
 
diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
new file mode 100644
index 000000000000..7c7b0e120d88
--- /dev/null
+++ b/drivers/usb/gadget/net2272.c
@@ -0,0 +1,2752 @@
+/*
+ * Driver for PLX NET2272 USB device controller
+ *
+ * Copyright (C) 2005-2006 PLX Technology, Inc.
+ * Copyright (C) 2006-2011 Analog Devices, 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, 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/usb.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <asm/byteorder.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+
+#include "net2272.h"
+
+#define DRIVER_DESC "PLX NET2272 USB Peripheral Controller"
+
+static const char driver_name[] = "net2272";
+static const char driver_vers[] = "2006 October 17/mainline";
+static const char driver_desc[] = DRIVER_DESC;
+
+static const char ep0name[] = "ep0";
+static const char * const ep_name[] = {
+        ep0name,
+        "ep-a", "ep-b", "ep-c",
+};
+
+#define DMA_ADDR_INVALID        (~(dma_addr_t)0)
+#ifdef CONFIG_USB_GADGET_NET2272_DMA
+/*
+ * use_dma: the NET2272 can use an external DMA controller.
+ * Note that since there is no generic DMA api, some functions,
+ * notably request_dma, start_dma, and cancel_dma will need to be
+ * modified for your platform's particular dma controller.
+ *
+ * If use_dma is disabled, pio will be used instead.
+ */
+static int use_dma = 0;
+module_param(use_dma, bool, 0644);
+
+/*
+ * dma_ep: selects the endpoint for use with dma (1=ep-a, 2=ep-b)
+ * The NET2272 can only use dma for a single endpoint at a time.
+ * At some point this could be modified to allow either endpoint
+ * to take control of dma as it becomes available.
+ *
+ * Note that DMA should not be used on OUT endpoints unless it can
+ * be guaranteed that no short packets will arrive on an IN endpoint
+ * while the DMA operation is pending.  Otherwise the OUT DMA will
+ * terminate prematurely (See NET2272 Errata 630-0213-0101)
+ */
+static ushort dma_ep = 1;
+module_param(dma_ep, ushort, 0644);
+
+/*
+ * dma_mode: net2272 dma mode setting (see LOCCTL1 definiton):
+ *      mode 0 == Slow DREQ mode
+ *      mode 1 == Fast DREQ mode
+ *      mode 2 == Burst mode
+ */
+static ushort dma_mode = 2;
+module_param(dma_mode, ushort, 0644);
+#else
+#define use_dma 0
+#define dma_ep 1
+#define dma_mode 2
+#endif
+
+/*
+ * fifo_mode: net2272 buffer configuration:
+ *      mode 0 == ep-{a,b,c} 512db each
+ *      mode 1 == ep-a 1k, ep-{b,c} 512db
+ *      mode 2 == ep-a 1k, ep-b 1k, ep-c 512db
+ *      mode 3 == ep-a 1k, ep-b disabled, ep-c 512db
+ */
+static ushort fifo_mode = 0;
+module_param(fifo_mode, ushort, 0644);
+
+/*
+ * enable_suspend: When enabled, the driver will respond to
+ * USB suspend requests by powering down the NET2272.  Otherwise,
+ * USB suspend requests will be ignored.  This is acceptible for
+ * self-powered devices.  For bus powered devices set this to 1.
+ */
+static ushort enable_suspend = 0;
+module_param(enable_suspend, ushort, 0644);
+
+static void assert_out_naking(struct net2272_ep *ep, const char *where)
+{
+        u8 tmp;
+
+#ifndef DEBUG
+        return;
+#endif
+
+        tmp = net2272_ep_read(ep, EP_STAT0);
+        if ((tmp & (1 << NAK_OUT_PACKETS)) == 0) {
+                dev_dbg(ep->dev->dev, "%s %s %02x !NAK\n",
+                        ep->ep.name, where, tmp);
+                net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS);
+        }
+}
+#define ASSERT_OUT_NAKING(ep) assert_out_naking(ep, __func__)
+
+static void stop_out_naking(struct net2272_ep *ep)
+{
+        u8 tmp = net2272_ep_read(ep, EP_STAT0);
+
+        if ((tmp & (1 << NAK_OUT_PACKETS)) != 0)
+                net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS);
+}
+
+#define PIPEDIR(bAddress) (usb_pipein(bAddress) ? "in" : "out")
+
+static char *type_string(u8 bmAttributes)
+{
+        switch ((bmAttributes) & USB_ENDPOINT_XFERTYPE_MASK) {
+        case USB_ENDPOINT_XFER_BULK: return "bulk";
+        case USB_ENDPOINT_XFER_ISOC: return "iso";
+        case USB_ENDPOINT_XFER_INT:  return "intr";
+        default:                     return "control";
+        }
+}
+
+static char *buf_state_string(unsigned state)
+{
+        switch (state) {
+        case BUFF_FREE:  return "free";
+        case BUFF_VALID: return "valid";
+        case BUFF_LCL:   return "local";
+        case BUFF_USB:   return "usb";
+        default:         return "unknown";
+        }
+}
+
+static char *dma_mode_string(void)
+{
+        if (!use_dma)
+                return "PIO";
+        switch (dma_mode) {
+        case 0:  return "SLOW DREQ";
+        case 1:  return "FAST DREQ";
+        case 2:  return "BURST";
+        default: return "invalid";
+        }
+}
+
+static void net2272_dequeue_all(struct net2272_ep *);
+static int net2272_kick_dma(struct net2272_ep *, struct net2272_request *);
+static int net2272_fifo_status(struct usb_ep *);
+
+static struct usb_ep_ops net2272_ep_ops;
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+{
+        struct net2272 *dev;
+        struct net2272_ep *ep;
+        u32 max;
+        u8 tmp;
+        unsigned long flags;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || !desc || ep->desc || _ep->name == ep0name
+                        || desc->bDescriptorType != USB_DT_ENDPOINT)
+                return -EINVAL;
+        dev = ep->dev;
+        if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
+                return -ESHUTDOWN;
+
+        max = le16_to_cpu(desc->wMaxPacketSize) & 0x1fff;
+
+        spin_lock_irqsave(&dev->lock, flags);
+        _ep->maxpacket = max & 0x7fff;
+        ep->desc = desc;
+
+        /* net2272_ep_reset() has already been called */
+        ep->stopped = 0;
+        ep->wedged = 0;
+
+        /* set speed-dependent max packet */
+        net2272_ep_write(ep, EP_MAXPKT0, max & 0xff);
+        net2272_ep_write(ep, EP_MAXPKT1, (max & 0xff00) >> 8);
+
+        /* set type, direction, address; reset fifo counters */
+        net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH);
+        tmp = usb_endpoint_type(desc);
+        if (usb_endpoint_xfer_bulk(desc)) {
+                /* catch some particularly blatant driver bugs */
+                if ((dev->gadget.speed == USB_SPEED_HIGH && max != 512) ||
+                    (dev->gadget.speed == USB_SPEED_FULL && max > 64)) {
+                        spin_unlock_irqrestore(&dev->lock, flags);
+                        return -ERANGE;
+                }
+        }
+        ep->is_iso = usb_endpoint_xfer_isoc(desc) ? 1 : 0;
+        tmp <<= ENDPOINT_TYPE;
+        tmp |= ((desc->bEndpointAddress & 0x0f) << ENDPOINT_NUMBER);
+        tmp |= usb_endpoint_dir_in(desc) << ENDPOINT_DIRECTION;
+        tmp |= (1 << ENDPOINT_ENABLE);
+
+        /* for OUT transfers, block the rx fifo until a read is posted */
+        ep->is_in = usb_endpoint_dir_in(desc);
+        if (!ep->is_in)
+                net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS);
+
+        net2272_ep_write(ep, EP_CFG, tmp);
+
+        /* enable irqs */
+        tmp = (1 << ep->num) | net2272_read(dev, IRQENB0);
+        net2272_write(dev, IRQENB0, tmp);
+
+        tmp = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
+                | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
+                | net2272_ep_read(ep, EP_IRQENB);
+        net2272_ep_write(ep, EP_IRQENB, tmp);
+
+        tmp = desc->bEndpointAddress;
+        dev_dbg(dev->dev, "enabled %s (ep%d%s-%s) max %04x cfg %02x\n",
+                _ep->name, tmp & 0x0f, PIPEDIR(tmp),
+                type_string(desc->bmAttributes), max,
+                net2272_ep_read(ep, EP_CFG));
+
+        spin_unlock_irqrestore(&dev->lock, flags);
+        return 0;
+}
+
+static void net2272_ep_reset(struct net2272_ep *ep)
+{
+        u8 tmp;
+
+        ep->desc = NULL;
+        INIT_LIST_HEAD(&ep->queue);
+
+        ep->ep.maxpacket = ~0;
+        ep->ep.ops = &net2272_ep_ops;
+
+        /* disable irqs, endpoint */
+        net2272_ep_write(ep, EP_IRQENB, 0);
+
+        /* init to our chosen defaults, notably so that we NAK OUT
+         * packets until the driver queues a read.
+         */
+        tmp = (1 << NAK_OUT_PACKETS_MODE) | (1 << ALT_NAK_OUT_PACKETS);
+        net2272_ep_write(ep, EP_RSPSET, tmp);
+
+        tmp = (1 << INTERRUPT_MODE) | (1 << HIDE_STATUS_PHASE);
+        if (ep->num != 0)
+                tmp |= (1 << ENDPOINT_TOGGLE) | (1 << ENDPOINT_HALT);
+
+        net2272_ep_write(ep, EP_RSPCLR, tmp);
+
+        /* scrub most status bits, and flush any fifo state */
+        net2272_ep_write(ep, EP_STAT0,
+                          (1 << DATA_IN_TOKEN_INTERRUPT)
+                        | (1 << DATA_OUT_TOKEN_INTERRUPT)
+                        | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)
+                        | (1 << DATA_PACKET_RECEIVED_INTERRUPT)
+                        | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT));
+
+        net2272_ep_write(ep, EP_STAT1,
+                            (1 << TIMEOUT)
+                          | (1 << USB_OUT_ACK_SENT)
+                          | (1 << USB_OUT_NAK_SENT)
+                          | (1 << USB_IN_ACK_RCVD)
+                          | (1 << USB_IN_NAK_SENT)
+                          | (1 << USB_STALL_SENT)
+                          | (1 << LOCAL_OUT_ZLP)
+                          | (1 << BUFFER_FLUSH));
+
+        /* fifo size is handled seperately */
+}
+
+static int net2272_disable(struct usb_ep *_ep)
+{
+        struct net2272_ep *ep;
+        unsigned long flags;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || !ep->desc || _ep->name == ep0name)
+                return -EINVAL;
+
+        spin_lock_irqsave(&ep->dev->lock, flags);
+        net2272_dequeue_all(ep);
+        net2272_ep_reset(ep);
+
+        dev_vdbg(ep->dev->dev, "disabled %s\n", _ep->name);
+
+        spin_unlock_irqrestore(&ep->dev->lock, flags);
+        return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static struct usb_request *
+net2272_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+        struct net2272_ep *ep;
+        struct net2272_request *req;
+
+        if (!_ep)
+                return NULL;
+        ep = container_of(_ep, struct net2272_ep, ep);
+
+        req = kzalloc(sizeof(*req), gfp_flags);
+        if (!req)
+                return NULL;
+
+        req->req.dma = DMA_ADDR_INVALID;
+        INIT_LIST_HEAD(&req->queue);
+
+        return &req->req;
+}
+
+static void
+net2272_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+        struct net2272_ep *ep;
+        struct net2272_request *req;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || !_req)
+                return;
+
+        req = container_of(_req, struct net2272_request, req);
+        WARN_ON(!list_empty(&req->queue));
+        kfree(req);
+}
+
+static void
+net2272_done(struct net2272_ep *ep, struct net2272_request *req, int status)
+{
+        struct net2272 *dev;
+        unsigned stopped = ep->stopped;
+
+        if (ep->num == 0) {
+                if (ep->dev->protocol_stall) {
+                        ep->stopped = 1;
+                        set_halt(ep);
+                }
+                allow_status(ep);
+        }
+
+        list_del_init(&req->queue);
+
+        if (req->req.status == -EINPROGRESS)
+                req->req.status = status;
+        else
+                status = req->req.status;
+
+        dev = ep->dev;
+        if (use_dma && req->mapped) {
+                dma_unmap_single(dev->dev, req->req.dma, req->req.length,
+                        ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+                req->req.dma = DMA_ADDR_INVALID;
+                req->mapped = 0;
+        }
+
+        if (status && status != -ESHUTDOWN)
+                dev_vdbg(dev->dev, "complete %s req %p stat %d len %u/%u buf %p\n",
+                        ep->ep.name, &req->req, status,
+                        req->req.actual, req->req.length, req->req.buf);
+
+        /* don't modify queue heads during completion callback */
+        ep->stopped = 1;
+        spin_unlock(&dev->lock);
+        req->req.complete(&ep->ep, &req->req);
+        spin_lock(&dev->lock);
+        ep->stopped = stopped;
+}
+
+static int
+net2272_write_packet(struct net2272_ep *ep, u8 *buf,
+        struct net2272_request *req, unsigned max)
+{
+        u16 __iomem *ep_data = net2272_reg_addr(ep->dev, EP_DATA);
+        u16 *bufp;
+        unsigned length, count;
+        u8 tmp;
+
+        length = min(req->req.length - req->req.actual, max);
+        req->req.actual += length;
+
+        dev_vdbg(ep->dev->dev, "write packet %s req %p max %u len %u avail %u\n",
+                ep->ep.name, req, max, length,
+                (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0));
+
+        count = length;
+        bufp = (u16 *)buf;
+
+        while (likely(count >= 2)) {
+                /* no byte-swap required; chip endian set during init */
+                writew(*bufp++, ep_data);
+                count -= 2;
+        }
+        buf = (u8 *)bufp;
+
+        /* write final byte by placing the NET2272 into 8-bit mode */
+        if (unlikely(count)) {
+                tmp = net2272_read(ep->dev, LOCCTL);
+                net2272_write(ep->dev, LOCCTL, tmp & ~(1 << DATA_WIDTH));
+                writeb(*buf, ep_data);
+                net2272_write(ep->dev, LOCCTL, tmp);
+        }
+        return length;
+}
+
+/* returns: 0: still running, 1: completed, negative: errno */
+static int
+net2272_write_fifo(struct net2272_ep *ep, struct net2272_request *req)
+{
+        u8 *buf;
+        unsigned count, max;
+        int status;
+
+        dev_vdbg(ep->dev->dev, "write_fifo %s actual %d len %d\n",
+                ep->ep.name, req->req.actual, req->req.length);
+
+        /*
+         * Keep loading the endpoint until the final packet is loaded,
+         * or the endpoint buffer is full.
+         */
+ top:
+        /*
+         * Clear interrupt status
+         *  - Packet Transmitted interrupt will become set again when the
+         *    host successfully takes another packet
+         */
+        net2272_ep_write(ep, EP_STAT0, (1 << DATA_PACKET_TRANSMITTED_INTERRUPT));
+        while (!(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_FULL))) {
+                buf = req->req.buf + req->req.actual;
+                prefetch(buf);
+
+                /* force pagesel */
+                net2272_ep_read(ep, EP_STAT0);
+
+                max = (net2272_ep_read(ep, EP_AVAIL1) << 8) |
+                        (net2272_ep_read(ep, EP_AVAIL0));
+
+                if (max < ep->ep.maxpacket)
+                        max = (net2272_ep_read(ep, EP_AVAIL1) << 8)
+                                | (net2272_ep_read(ep, EP_AVAIL0));
+
+                count = net2272_write_packet(ep, buf, req, max);
+                /* see if we are done */
+                if (req->req.length == req->req.actual) {
+                        /* validate short or zlp packet */
+                        if (count < ep->ep.maxpacket)
+                                set_fifo_bytecount(ep, 0);
+                        net2272_done(ep, req, 0);
+
+                        if (!list_empty(&ep->queue)) {
+                                req = list_entry(ep->queue.next,
+                                                struct net2272_request,
+                                                queue);
+                                status = net2272_kick_dma(ep, req);
+
+                                if (status < 0)
+                                        if ((net2272_ep_read(ep, EP_STAT0)
+                                                        & (1 << BUFFER_EMPTY)))
+                                                goto top;
+                        }
+                        return 1;
+                }
+                net2272_ep_write(ep, EP_STAT0, (1 << DATA_PACKET_TRANSMITTED_INTERRUPT));
+        }
+        return 0;
+}
+
+static void
+net2272_out_flush(struct net2272_ep *ep)
+{
+        ASSERT_OUT_NAKING(ep);
+
+        net2272_ep_write(ep, EP_STAT0, (1 << DATA_OUT_TOKEN_INTERRUPT)
+                        | (1 << DATA_PACKET_RECEIVED_INTERRUPT));
+        net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH);
+}
+
+static int
+net2272_read_packet(struct net2272_ep *ep, u8 *buf,
+        struct net2272_request *req, unsigned avail)
+{
+        u16 __iomem *ep_data = net2272_reg_addr(ep->dev, EP_DATA);
+        unsigned is_short;
+        u16 *bufp;
+
+        req->req.actual += avail;
+
+        dev_vdbg(ep->dev->dev, "read packet %s req %p len %u avail %u\n",
+                ep->ep.name, req, avail,
+                (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0));
+
+        is_short = (avail < ep->ep.maxpacket);
+
+        if (unlikely(avail == 0)) {
+                /* remove any zlp from the buffer */
+                (void)readw(ep_data);
+                return is_short;
+        }
+
+        /* Ensure we get the final byte */
+        if (unlikely(avail % 2))
+                avail++;
+        bufp = (u16 *)buf;
+
+        do {
+                *bufp++ = readw(ep_data);
+                avail -= 2;
+        } while (avail);
+
+        /*
+         * To avoid false endpoint available race condition must read
+         * ep stat0 twice in the case of a short transfer
+         */
+        if (net2272_ep_read(ep, EP_STAT0) & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT))
+                net2272_ep_read(ep, EP_STAT0);
+
+        return is_short;
+}
+
+static int
+net2272_read_fifo(struct net2272_ep *ep, struct net2272_request *req)
+{
+        u8 *buf;
+        unsigned is_short;
+        int count;
+        int tmp;
+        int cleanup = 0;
+        int status = -1;
+
+        dev_vdbg(ep->dev->dev, "read_fifo %s actual %d len %d\n",
+                ep->ep.name, req->req.actual, req->req.length);
+
+ top:
+        do {
+                buf = req->req.buf + req->req.actual;
+                prefetchw(buf);
+
+                count = (net2272_ep_read(ep, EP_AVAIL1) << 8)
+                        | net2272_ep_read(ep, EP_AVAIL0);
+
+                net2272_ep_write(ep, EP_STAT0,
+                        (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT) |
+                        (1 << DATA_PACKET_RECEIVED_INTERRUPT));
+
+                tmp = req->req.length - req->req.actual;
+
+                if (count > tmp) {
+                        if ((tmp % ep->ep.maxpacket) != 0) {
+                                dev_err(ep->dev->dev,
+                                        "%s out fifo %d bytes, expected %d\n",
+                                        ep->ep.name, count, tmp);
+                                cleanup = 1;
+                        }
+                        count = (tmp > 0) ? tmp : 0;
+                }
+
+                is_short = net2272_read_packet(ep, buf, req, count);
+
+                /* completion */
+                if (unlikely(cleanup || is_short ||
+                                ((req->req.actual == req->req.length)
+                                 && !req->req.zero))) {
+
+                        if (cleanup) {
+                                net2272_out_flush(ep);
+                                net2272_done(ep, req, -EOVERFLOW);
+                        } else
+                                net2272_done(ep, req, 0);
+
+                        /* re-initialize endpoint transfer registers
+                         * otherwise they may result in erroneous pre-validation
+                         * for subsequent control reads
+                         */
+                        if (unlikely(ep->num == 0)) {
+                                net2272_ep_write(ep, EP_TRANSFER2, 0);
+                                net2272_ep_write(ep, EP_TRANSFER1, 0);
+                                net2272_ep_write(ep, EP_TRANSFER0, 0);
+                        }
+
+                        if (!list_empty(&ep->queue)) {
+                                req = list_entry(ep->queue.next,
+                                        struct net2272_request, queue);
+                                status = net2272_kick_dma(ep, req);
+                                if ((status < 0) &&
+                                    !(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_EMPTY)))
+                                        goto top;
+                        }
+                        return 1;
+                }
+        } while (!(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_EMPTY)));
+
+        return 0;
+}
+
+static void
+net2272_pio_advance(struct net2272_ep *ep)
+{
+        struct net2272_request *req;
+
+        if (unlikely(list_empty(&ep->queue)))
+                return;
+
+        req = list_entry(ep->queue.next, struct net2272_request, queue);
+        (ep->is_in ? net2272_write_fifo : net2272_read_fifo)(ep, req);
+}
+
+/* returns 0 on success, else negative errno */
+static int
+net2272_request_dma(struct net2272 *dev, unsigned ep, u32 buf,
+        unsigned len, unsigned dir)
+{
+        dev_vdbg(dev->dev, "request_dma ep %d buf %08x len %d dir %d\n",
+                ep, buf, len, dir);
+
+        /* The NET2272 only supports a single dma channel */
+        if (dev->dma_busy)
+                return -EBUSY;
+        /*
+         * EP_TRANSFER (used to determine the number of bytes received
+         * in an OUT transfer) is 24 bits wide; don't ask for more than that.
+         */
+        if ((dir == 1) && (len > 0x1000000))
+                return -EINVAL;
+
+        dev->dma_busy = 1;
+
+        /* initialize platform's dma */
+#ifdef CONFIG_PCI
+        /* NET2272 addr, buffer addr, length, etc. */
+        switch (dev->dev_id) {
+        case PCI_DEVICE_ID_RDK1:
+                /* Setup PLX 9054 DMA mode */
+                writel((1 << LOCAL_BUS_WIDTH) |
+                        (1 << TA_READY_INPUT_ENABLE) |
+                        (0 << LOCAL_BURST_ENABLE) |
+                        (1 << DONE_INTERRUPT_ENABLE) |
+                        (1 << LOCAL_ADDRESSING_MODE) |
+                        (1 << DEMAND_MODE) |
+                        (1 << DMA_EOT_ENABLE) |
+                        (1 << FAST_SLOW_TERMINATE_MODE_SELECT) |
+                        (1 << DMA_CHANNEL_INTERRUPT_SELECT),
+                        dev->rdk1.plx9054_base_addr + DMAMODE0);
+
+                writel(0x100000, dev->rdk1.plx9054_base_addr + DMALADR0);
+                writel(buf, dev->rdk1.plx9054_base_addr + DMAPADR0);
+                writel(len, dev->rdk1.plx9054_base_addr + DMASIZ0);
+                writel((dir << DIRECTION_OF_TRANSFER) |
+                        (1 << INTERRUPT_AFTER_TERMINAL_COUNT),
+                        dev->rdk1.plx9054_base_addr + DMADPR0);
+                writel((1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE) |
+                        readl(dev->rdk1.plx9054_base_addr + INTCSR),
+                        dev->rdk1.plx9054_base_addr + INTCSR);
+
+                break;
+        }
+#endif
+
+        net2272_write(dev, DMAREQ,
+                (0 << DMA_BUFFER_VALID) |
+                (1 << DMA_REQUEST_ENABLE) |
+                (1 << DMA_CONTROL_DACK) |
+                (dev->dma_eot_polarity << EOT_POLARITY) |
+                (dev->dma_dack_polarity << DACK_POLARITY) |
+                (dev->dma_dreq_polarity << DREQ_POLARITY) |
+                ((ep >> 1) << DMA_ENDPOINT_SELECT));
+
+        (void) net2272_read(dev, SCRATCH);
+
+        return 0;
+}
+
+static void
+net2272_start_dma(struct net2272 *dev)
+{
+        /* start platform's dma controller */
+#ifdef CONFIG_PCI
+        switch (dev->dev_id) {
+        case PCI_DEVICE_ID_RDK1:
+                writeb((1 << CHANNEL_ENABLE) | (1 << CHANNEL_START),
+                        dev->rdk1.plx9054_base_addr + DMACSR0);
+                break;
+        }
+#endif
+}
+
+/* returns 0 on success, else negative errno */
+static int
+net2272_kick_dma(struct net2272_ep *ep, struct net2272_request *req)
+{
+        unsigned size;
+        u8 tmp;
+
+        if (!use_dma || (ep->num < 1) || (ep->num > 2) || !ep->dma)
+                return -EINVAL;
+
+        /* don't use dma for odd-length transfers
+         * otherwise, we'd need to deal with the last byte with pio
+         */
+        if (req->req.length & 1)
+                return -EINVAL;
+
+        dev_vdbg(ep->dev->dev, "kick_dma %s req %p dma %08llx\n",
+                ep->ep.name, req, (unsigned long long) req->req.dma);
+
+        net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS);
+
+        /* The NET2272 can only use DMA on one endpoint at a time */
+        if (ep->dev->dma_busy)
+                return -EBUSY;
+
+        /* Make sure we only DMA an even number of bytes (we'll use
+         * pio to complete the transfer)
+         */
+        size = req->req.length;
+        size &= ~1;
+
+        /* device-to-host transfer */
+        if (ep->is_in) {
+                /* initialize platform's dma controller */
+                if (net2272_request_dma(ep->dev, ep->num, req->req.dma, size, 0))
+                        /* unable to obtain DMA channel; return error and use pio mode */
+                        return -EBUSY;
+                req->req.actual += size;
+
+        /* host-to-device transfer */
+        } else {
+                tmp = net2272_ep_read(ep, EP_STAT0);
+
+                /* initialize platform's dma controller */
+                if (net2272_request_dma(ep->dev, ep->num, req->req.dma, size, 1))
+                        /* unable to obtain DMA channel; return error and use pio mode */
+                        return -EBUSY;
+
+                if (!(tmp & (1 << BUFFER_EMPTY)))
+                        ep->not_empty = 1;
+                else
+                        ep->not_empty = 0;
+
+
+                /* allow the endpoint's buffer to fill */
+                net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS);
+
+                /* this transfer completed and data's already in the fifo
+                 * return error so pio gets used.
+                 */
+                if (tmp & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) {
+
+                        /* deassert dreq */
+                        net2272_write(ep->dev, DMAREQ,
+                                (0 << DMA_BUFFER_VALID) |
+                                (0 << DMA_REQUEST_ENABLE) |
+                                (1 << DMA_CONTROL_DACK) |
+                                (ep->dev->dma_eot_polarity << EOT_POLARITY) |
+                                (ep->dev->dma_dack_polarity << DACK_POLARITY) |
+                                (ep->dev->dma_dreq_polarity << DREQ_POLARITY) |
+                                ((ep->num >> 1) << DMA_ENDPOINT_SELECT));
+
+                        return -EBUSY;
+                }
+        }
+
+        /* Don't use per-packet interrupts: use dma interrupts only */
+        net2272_ep_write(ep, EP_IRQENB, 0);
+
+        net2272_start_dma(ep->dev);
+
+        return 0;
+}
+
+static void net2272_cancel_dma(struct net2272 *dev)
+{
+#ifdef CONFIG_PCI
+        switch (dev->dev_id) {
+        case PCI_DEVICE_ID_RDK1:
+                writeb(0, dev->rdk1.plx9054_base_addr + DMACSR0);
+                writeb(1 << CHANNEL_ABORT, dev->rdk1.plx9054_base_addr + DMACSR0);
+                while (!(readb(dev->rdk1.plx9054_base_addr + DMACSR0) &
+                         (1 << CHANNEL_DONE)))
+                        continue;       /* wait for dma to stabalize */
+
+                /* dma abort generates an interrupt */
+                writeb(1 << CHANNEL_CLEAR_INTERRUPT,
+                        dev->rdk1.plx9054_base_addr + DMACSR0);
+                break;
+        }
+#endif
+
+        dev->dma_busy = 0;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+        struct net2272_request *req;
+        struct net2272_ep *ep;
+        struct net2272 *dev;
+        unsigned long flags;
+        int status = -1;
+        u8 s;
+
+        req = container_of(_req, struct net2272_request, req);
+        if (!_req || !_req->complete || !_req->buf
+                        || !list_empty(&req->queue))
+                return -EINVAL;
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || (!ep->desc && ep->num != 0))
+                return -EINVAL;
+        dev = ep->dev;
+        if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
+                return -ESHUTDOWN;
+
+        /* set up dma mapping in case the caller didn't */
+        if (use_dma && ep->dma && _req->dma == DMA_ADDR_INVALID) {
+                _req->dma = dma_map_single(dev->dev, _req->buf, _req->length,
+                        ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+                req->mapped = 1;
+        }
+
+        dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08llx %s\n",
+                _ep->name, _req, _req->length, _req->buf,
+                (unsigned long long) _req->dma, _req->zero ? "zero" : "!zero");
+
+        spin_lock_irqsave(&dev->lock, flags);
+
+        _req->status = -EINPROGRESS;
+        _req->actual = 0;
+
+        /* kickstart this i/o queue? */
+        if (list_empty(&ep->queue) && !ep->stopped) {
+                /* maybe there's no control data, just status ack */
+                if (ep->num == 0 && _req->length == 0) {
+                        net2272_done(ep, req, 0);
+                        dev_vdbg(dev->dev, "%s status ack\n", ep->ep.name);
+                        goto done;
+                }
+
+                /* Return zlp, don't let it block subsequent packets */
+                s = net2272_ep_read(ep, EP_STAT0);
+                if (s & (1 << BUFFER_EMPTY)) {
+                        /* Buffer is empty check for a blocking zlp, handle it */
+                        if ((s & (1 << NAK_OUT_PACKETS)) &&
+                            net2272_ep_read(ep, EP_STAT1) & (1 << LOCAL_OUT_ZLP)) {
+                                dev_dbg(dev->dev, "WARNING: returning ZLP short packet termination!\n");
+                                /*
+                                 * Request is going to terminate with a short packet ...
+                                 * hope the client is ready for it!
+                                 */
+                                status = net2272_read_fifo(ep, req);
+                                /* clear short packet naking */
+                                net2272_ep_write(ep, EP_STAT0, (1 << NAK_OUT_PACKETS));
+                                goto done;
+                        }
+                }
+
+                /* try dma first */
+                status = net2272_kick_dma(ep, req);
+
+                if (status < 0) {
+                        /* dma failed (most likely in use by another endpoint)
+                         * fallback to pio
+                         */
+                        status = 0;
+
+                        if (ep->is_in)
+                                status = net2272_write_fifo(ep, req);
+                        else {
+                                s = net2272_ep_read(ep, EP_STAT0);
+                                if ((s & (1 << BUFFER_EMPTY)) == 0)
+                                        status = net2272_read_fifo(ep, req);
+                        }
+
+                        if (unlikely(status != 0)) {
+                                if (status > 0)
+                                        status = 0;
+                                req = NULL;
+                        }
+                }
+        }
+        if (likely(req != 0))
+                list_add_tail(&req->queue, &ep->queue);
+
+        if (likely(!list_empty(&ep->queue)))
+                net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS);
+ done:
+        spin_unlock_irqrestore(&dev->lock, flags);
+
+        return 0;
+}
+
+/* dequeue ALL requests */
+static void
+net2272_dequeue_all(struct net2272_ep *ep)
+{
+        struct net2272_request *req;
+
+        /* called with spinlock held */
+        ep->stopped = 1;
+
+        while (!list_empty(&ep->queue)) {
+                req = list_entry(ep->queue.next,
+                                struct net2272_request,
+                                queue);
+                net2272_done(ep, req, -ESHUTDOWN);
+        }
+}
+
+/* dequeue JUST ONE request */
+static int
+net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+        struct net2272_ep *ep;
+        struct net2272_request *req;
+        unsigned long flags;
+        int stopped;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || (!ep->desc && ep->num != 0) || !_req)
+                return -EINVAL;
+
+        spin_lock_irqsave(&ep->dev->lock, flags);
+        stopped = ep->stopped;
+        ep->stopped = 1;
+
+        /* make sure it's still queued on this endpoint */
+        list_for_each_entry(req, &ep->queue, queue) {
+                if (&req->req == _req)
+                        break;
+        }
+        if (&req->req != _req) {
+                spin_unlock_irqrestore(&ep->dev->lock, flags);
+                return -EINVAL;
+        }
+
+        /* queue head may be partially complete */
+        if (ep->queue.next == &req->queue) {
+                dev_dbg(ep->dev->dev, "unlink (%s) pio\n", _ep->name);
+                net2272_done(ep, req, -ECONNRESET);
+        }
+        req = NULL;
+        ep->stopped = stopped;
+
+        spin_unlock_irqrestore(&ep->dev->lock, flags);
+        return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
+{
+        struct net2272_ep *ep;
+        unsigned long flags;
+        int ret = 0;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || (!ep->desc && ep->num != 0))
+                return -EINVAL;
+        if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
+                return -ESHUTDOWN;
+        if (ep->desc /* not ep0 */ && usb_endpoint_xfer_isoc(ep->desc))
+                return -EINVAL;
+
+        spin_lock_irqsave(&ep->dev->lock, flags);
+        if (!list_empty(&ep->queue))
+                ret = -EAGAIN;
+        else if (ep->is_in && value && net2272_fifo_status(_ep) != 0)
+                ret = -EAGAIN;
+        else {
+                dev_vdbg(ep->dev->dev, "%s %s %s\n", _ep->name,
+                        value ? "set" : "clear",
+                        wedged ? "wedge" : "halt");
+                /* set/clear */
+                if (value) {
+                        if (ep->num == 0)
+                                ep->dev->protocol_stall = 1;
+                        else
+                                set_halt(ep);
+                        if (wedged)
+                                ep->wedged = 1;
+                } else {
+                        clear_halt(ep);
+                        ep->wedged = 0;
+                }
+        }
+        spin_unlock_irqrestore(&ep->dev->lock, flags);
+
+        return ret;
+}
+
+static int
+net2272_set_halt(struct usb_ep *_ep, int value)
+{
+        return net2272_set_halt_and_wedge(_ep, value, 0);
+}
+
+static int
+net2272_set_wedge(struct usb_ep *_ep)
+{
+        if (!_ep || _ep->name == ep0name)
+                return -EINVAL;
+        return net2272_set_halt_and_wedge(_ep, 1, 1);
+}
+
+static int
+net2272_fifo_status(struct usb_ep *_ep)
+{
+        struct net2272_ep *ep;
+        u16 avail;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || (!ep->desc && ep->num != 0))
+                return -ENODEV;
+        if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
+                return -ESHUTDOWN;
+
+        avail = net2272_ep_read(ep, EP_AVAIL1) << 8;
+        avail |= net2272_ep_read(ep, EP_AVAIL0);
+        if (avail > ep->fifo_size)
+                return -EOVERFLOW;
+        if (ep->is_in)
+                avail = ep->fifo_size - avail;
+        return avail;
+}
+
+static void
+net2272_fifo_flush(struct usb_ep *_ep)
+{
+        struct net2272_ep *ep;
+
+        ep = container_of(_ep, struct net2272_ep, ep);
+        if (!_ep || (!ep->desc && ep->num != 0))
+                return;
+        if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN)
+                return;
+
+        net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH);
+}
+
+static struct usb_ep_ops net2272_ep_ops = {
+        .enable        = net2272_enable,
+        .disable       = net2272_disable,
+
+        .alloc_request = net2272_alloc_request,
+        .free_request  = net2272_free_request,
+
+        .queue         = net2272_queue,
+        .dequeue       = net2272_dequeue,
+
+        .set_halt      = net2272_set_halt,
+        .set_wedge     = net2272_set_wedge,
+        .fifo_status   = net2272_fifo_status,
+        .fifo_flush    = net2272_fifo_flush,
+};
+
+/*---------------------------------------------------------------------------*/
+
+static int
+net2272_get_frame(struct usb_gadget *_gadget)
+{
+        struct net2272 *dev;
+        unsigned long flags;
+        u16 ret;
+
+        if (!_gadget)
+                return -ENODEV;
+        dev = container_of(_gadget, struct net2272, gadget);
+        spin_lock_irqsave(&dev->lock, flags);
+
+        ret = net2272_read(dev, FRAME1) << 8;
+        ret |= net2272_read(dev, FRAME0);
+
+        spin_unlock_irqrestore(&dev->lock, flags);
+        return ret;
+}
+
+static int
+net2272_wakeup(struct usb_gadget *_gadget)
+{
+        struct net2272 *dev;
+        u8 tmp;
+        unsigned long flags;
+
+        if (!_gadget)
+                return 0;
+        dev = container_of(_gadget, struct net2272, gadget);
+
+        spin_lock_irqsave(&dev->lock, flags);
+        tmp = net2272_read(dev, USBCTL0);
+        if (tmp & (1 << IO_WAKEUP_ENABLE))
+                net2272_write(dev, USBCTL1, (1 << GENERATE_RESUME));
+
+        spin_unlock_irqrestore(&dev->lock, flags);
+
+        return 0;
+}
+
+static int
+net2272_set_selfpowered(struct usb_gadget *_gadget, int value)
+{
+        struct net2272 *dev;
+
+        if (!_gadget)
+                return -ENODEV;
+        dev = container_of(_gadget, struct net2272, gadget);
+
+        dev->is_selfpowered = value;
+
+        return 0;
+}
+
+static int
+net2272_pullup(struct usb_gadget *_gadget, int is_on)
+{
+        struct net2272 *dev;
+        u8 tmp;
+        unsigned long flags;
+
+        if (!_gadget)
+                return -ENODEV;
+        dev = container_of(_gadget, struct net2272, gadget);
+
+        spin_lock_irqsave(&dev->lock, flags);
+        tmp = net2272_read(dev, USBCTL0);
+        dev->softconnect = (is_on != 0);
+        if (is_on)
+                tmp |= (1 << USB_DETECT_ENABLE);
+        else
+                tmp &= ~(1 << USB_DETECT_ENABLE);
+        net2272_write(dev, USBCTL0, tmp);
+        spin_unlock_irqrestore(&dev->lock, flags);
+
+        return 0;
+}
+
+static int net2272_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int net2272_stop(struct usb_gadget_driver *driver);
+
+static const struct usb_gadget_ops net2272_ops = {
+        .get_frame       = net2272_get_frame,
+        .wakeup          = net2272_wakeup,
+        .set_selfpowered = net2272_set_selfpowered,
+        .pullup                 = net2272_pullup,
+        .start                  = net2272_start,
+        .stop                   = net2272_stop,
+};
+
+/*---------------------------------------------------------------------------*/
+
+static ssize_t
+net2272_show_registers(struct device *_dev, struct device_attribute *attr, char *buf)
+{
+        struct net2272 *dev;
+        char *next;
+        unsigned size, t;
+        unsigned long flags;
+        u8 t1, t2;
+        int i;
+        const char *s;
+
+        dev = dev_get_drvdata(_dev);
+        next = buf;
+        size = PAGE_SIZE;
+        spin_lock_irqsave(&dev->lock, flags);
+
+        if (dev->driver)
+                s = dev->driver->driver.name;
+        else
+                s = "(none)";
+
+        /* Main Control Registers */
+        t = scnprintf(next, size, "%s version %s,"
+                "chiprev %02x, locctl %02x\n"
+                "irqenb0 %02x irqenb1 %02x "
+                "irqstat0 %02x irqstat1 %02x\n",
+                driver_name, driver_vers, dev->chiprev,
+                net2272_read(dev, LOCCTL),
+                net2272_read(dev, IRQENB0),
+                net2272_read(dev, IRQENB1),
+                net2272_read(dev, IRQSTAT0),
+                net2272_read(dev, IRQSTAT1));
+        size -= t;
+        next += t;
+
+        /* DMA */
+        t1 = net2272_read(dev, DMAREQ);
+        t = scnprintf(next, size, "\ndmareq %02x: %s %s%s%s%s\n",
+                t1, ep_name[(t1 & 0x01) + 1],
+                t1 & (1 << DMA_CONTROL_DACK) ? "dack " : "",
+                t1 & (1 << DMA_REQUEST_ENABLE) ? "reqenb " : "",
+                t1 & (1 << DMA_REQUEST) ? "req " : "",
+                t1 & (1 << DMA_BUFFER_VALID) ? "valid " : "");
+        size -= t;
+        next += t;
+
+        /* USB Control Registers */
+        t1 = net2272_read(dev, USBCTL1);
+        if (t1 & (1 << VBUS_PIN)) {
+                if (t1 & (1 << USB_HIGH_SPEED))
+                        s = "high speed";
+                else if (dev->gadget.speed == USB_SPEED_UNKNOWN)
+                        s = "powered";
+                else
+                        s = "full speed";
+        } else
+                s = "not attached";
+        t = scnprintf(next, size,
+                "usbctl0 %02x usbctl1 %02x addr 0x%02x (%s)\n",
+                net2272_read(dev, USBCTL0), t1,
+                net2272_read(dev, OURADDR), s);
+        size -= t;
+        next += t;
+
+        /* Endpoint Registers */
+        for (i = 0; i < 4; ++i) {
+                struct net2272_ep *ep;
+
+                ep = &dev->ep[i];
+                if (i && !ep->desc)
+                        continue;
+
+                t1 = net2272_ep_read(ep, EP_CFG);
+                t2 = net2272_ep_read(ep, EP_RSPSET);
+                t = scnprintf(next, size,
+                        "\n%s\tcfg %02x rsp (%02x) %s%s%s%s%s%s%s%s"
+                        "irqenb %02x\n",
+                        ep->ep.name, t1, t2,
+                        (t2 & (1 << ALT_NAK_OUT_PACKETS)) ? "NAK " : "",
+                        (t2 & (1 << HIDE_STATUS_PHASE)) ? "hide " : "",
+                        (t2 & (1 << AUTOVALIDATE)) ? "auto " : "",
+                        (t2 & (1 << INTERRUPT_MODE)) ? "interrupt " : "",
+                        (t2 & (1 << CONTROL_STATUS_PHASE_HANDSHAKE)) ? "status " : "",
+                        (t2 & (1 << NAK_OUT_PACKETS_MODE)) ? "NAKmode " : "",
+                        (t2 & (1 << ENDPOINT_TOGGLE)) ? "DATA1 " : "DATA0 ",
+                        (t2 & (1 << ENDPOINT_HALT)) ? "HALT " : "",
+                        net2272_ep_read(ep, EP_IRQENB));
+                size -= t;
+                next += t;
+
+                t = scnprintf(next, size,
+                        "\tstat0 %02x stat1 %02x avail %04x "
+                        "(ep%d%s-%s)%s\n",
+                        net2272_ep_read(ep, EP_STAT0),
+                        net2272_ep_read(ep, EP_STAT1),
+                        (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0),
+                        t1 & 0x0f,
+                        ep->is_in ? "in" : "out",
+                        type_string(t1 >> 5),
+                        ep->stopped ? "*" : "");
+                size -= t;
+                next += t;
+
+                t = scnprintf(next, size,
+                        "\tep_transfer %06x\n",
+                        ((net2272_ep_read(ep, EP_TRANSFER2) & 0xff) << 16) |
+                        ((net2272_ep_read(ep, EP_TRANSFER1) & 0xff) << 8) |
+                        ((net2272_ep_read(ep, EP_TRANSFER0) & 0xff)));
+                size -= t;
+                next += t;
+
+                t1 = net2272_ep_read(ep, EP_BUFF_STATES) & 0x03;
+                t2 = (net2272_ep_read(ep, EP_BUFF_STATES) >> 2) & 0x03;
+                t = scnprintf(next, size,
+                        "\tbuf-a %s buf-b %s\n",
+                        buf_state_string(t1),
+                        buf_state_string(t2));
+                size -= t;
+                next += t;
+        }
+
+        spin_unlock_irqrestore(&dev->lock, flags);
+
+        return PAGE_SIZE - size;
+}
+static DEVICE_ATTR(registers, S_IRUGO, net2272_show_registers, NULL);
+
+/*---------------------------------------------------------------------------*/
+
+static void
+net2272_set_fifo_mode(struct net2272 *dev, int mode)
+{
+        u8 tmp;
+
+        tmp = net2272_read(dev, LOCCTL) & 0x3f;
+        tmp |= (mode << 6);
+        net2272_write(dev, LOCCTL, tmp);
+
+        INIT_LIST_HEAD(&dev->gadget.ep_list);
+
+        /* always ep-a, ep-c ... maybe not ep-b */
+        list_add_tail(&dev->ep[1].ep.ep_list, &dev->gadget.ep_list);
+
+        switch (mode) {
+        case 0:
+                list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list);
+                dev->ep[1].fifo_size = dev->ep[2].fifo_size = 512;
+                break;
+        case 1:
+                list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list);
+                dev->ep[1].fifo_size = 1024;
+                dev->ep[2].fifo_size = 512;
+                break;
+        case 2:
+                list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list);
+                dev->ep[1].fifo_size = dev->ep[2].fifo_size = 1024;
+                break;
+        case 3:
+                dev->ep[1].fifo_size = 1024;
+                break;
+        }
+
+        /* ep-c is always 2 512 byte buffers */
+        list_add_tail(&dev->ep[3].ep.ep_list, &dev->gadget.ep_list);
+        dev->ep[3].fifo_size = 512;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static struct net2272 *the_controller;
+
+static void
+net2272_usb_reset(struct net2272 *dev)
+{
+        dev->gadget.speed = USB_SPEED_UNKNOWN;
+
+        net2272_cancel_dma(dev);
+
+        net2272_write(dev, IRQENB0, 0);
+        net2272_write(dev, IRQENB1, 0);
+
+        /* clear irq state */
+        net2272_write(dev, IRQSTAT0, 0xff);
+        net2272_write(dev, IRQSTAT1, ~(1 << SUSPEND_REQUEST_INTERRUPT));
+
+        net2272_write(dev, DMAREQ,
+                (0 << DMA_BUFFER_VALID) |
+                (0 << DMA_REQUEST_ENABLE) |
+                (1 << DMA_CONTROL_DACK) |
+                (dev->dma_eot_polarity << EOT_POLARITY) |
+                (dev->dma_dack_polarity << DACK_POLARITY) |
+                (dev->dma_dreq_polarity << DREQ_POLARITY) |
+                ((dma_ep >> 1) << DMA_ENDPOINT_SELECT));
+
+        net2272_cancel_dma(dev);
+        net2272_set_fifo_mode(dev, (fifo_mode <= 3) ? fifo_mode : 0);
+
+        /* Set the NET2272 ep fifo data width to 16-bit mode and for correct byte swapping
+         * note that the higher level gadget drivers are expected to convert data to little endian.
+         * Enable byte swap for your local bus/cpu if needed by setting BYTE_SWAP in LOCCTL here
+         */
+        net2272_write(dev, LOCCTL, net2272_read(dev, LOCCTL) | (1 << DATA_WIDTH));
+        net2272_write(dev, LOCCTL1, (dma_mode << DMA_MODE));
+}
+
+static void
+net2272_usb_reinit(struct net2272 *dev)
+{
+        int i;
+
+        /* basic endpoint init */
+        for (i = 0; i < 4; ++i) {
+                struct net2272_ep *ep = &dev->ep[i];
+
+                ep->ep.name = ep_name[i];
+                ep->dev = dev;
+                ep->num = i;
+                ep->not_empty = 0;
+
+                if (use_dma && ep->num == dma_ep)
+                        ep->dma = 1;
+
+                if (i > 0 && i <= 3)
+                        ep->fifo_size = 512;
+                else
+                        ep->fifo_size = 64;
+                net2272_ep_reset(ep);
+        }
+        dev->ep[0].ep.maxpacket = 64;
+
+        dev->gadget.ep0 = &dev->ep[0].ep;
+        dev->ep[0].stopped = 0;
+        INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
+}
+
+static void
+net2272_ep0_start(struct net2272 *dev)
+{
+        struct net2272_ep *ep0 = &dev->ep[0];
+
+        net2272_ep_write(ep0, EP_RSPSET,
+                (1 << NAK_OUT_PACKETS_MODE) |
+                (1 << ALT_NAK_OUT_PACKETS));
+        net2272_ep_write(ep0, EP_RSPCLR,
+                (1 << HIDE_STATUS_PHASE) |
+                (1 << CONTROL_STATUS_PHASE_HANDSHAKE));
+        net2272_write(dev, USBCTL0,
+                (dev->softconnect << USB_DETECT_ENABLE) |
+                (1 << USB_ROOT_PORT_WAKEUP_ENABLE) |
+                (1 << IO_WAKEUP_ENABLE));
+        net2272_write(dev, IRQENB0,
+                (1 << SETUP_PACKET_INTERRUPT_ENABLE) |
+                (1 << ENDPOINT_0_INTERRUPT_ENABLE) |
+                (1 << DMA_DONE_INTERRUPT_ENABLE));
+        net2272_write(dev, IRQENB1,
+                (1 << VBUS_INTERRUPT_ENABLE) |
+                (1 << ROOT_PORT_RESET_INTERRUPT_ENABLE) |
+                (1 << SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE));
+}
+
+/* when a driver is successfully registered, it will receive
+ * control requests including set_configuration(), which enables
+ * non-control requests.  then usb traffic follows until a
+ * disconnect is reported.  then a host may connect again, or
+ * the driver might get unbound.
+ */
+static int net2272_start(struct usb_gadget_driver *driver,
+        int (*bind)(struct usb_gadget *))
+{
+        struct net2272 *dev = the_controller;
+        int ret;
+        unsigned i;
+
+        if (!driver || !bind || !driver->unbind || !driver->setup ||
+            driver->speed != USB_SPEED_HIGH)
+                return -EINVAL;
+        if (!dev)
+                return -ENODEV;
+        if (dev->driver)
+                return -EBUSY;
+
+        for (i = 0; i < 4; ++i)
+                dev->ep[i].irqs = 0;
+        /* hook up the driver ... */
+        dev->softconnect = 1;
+        driver->driver.bus = NULL;
+        dev->driver = driver;
+        dev->gadget.dev.driver = &driver->driver;
+        ret = bind(&dev->gadget);
+        if (ret) {
+                dev_dbg(dev->dev, "bind to driver %s --> %d\n",
+                        driver->driver.name, ret);
+                dev->driver = NULL;
+                dev->gadget.dev.driver = NULL;
+                return ret;
+        }
+
+        /* ... then enable host detection and ep0; and we're ready
+         * for set_configuration as well as eventual disconnect.
+         */
+        net2272_ep0_start(dev);
+
+        dev_dbg(dev->dev, "%s ready\n", driver->driver.name);
+
+        return 0;
+}
+
+static void
+stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
+{
+        int i;
+
+        /* don't disconnect if it's not connected */
+        if (dev->gadget.speed == USB_SPEED_UNKNOWN)
+                driver = NULL;
+
+        /* stop hardware; prevent new request submissions;
+         * and kill any outstanding requests.
+         */
+        net2272_usb_reset(dev);
+        for (i = 0; i < 4; ++i)
+                net2272_dequeue_all(&dev->ep[i]);
+
+        /* report disconnect; the driver is already quiesced */
+        if (driver) {
+                spin_unlock(&dev->lock);
+                driver->disconnect(&dev->gadget);
+                spin_lock(&dev->lock);
+
+        }
+        net2272_usb_reinit(dev);
+}
+
+static int net2272_stop(struct usb_gadget_driver *driver)
+{
+        struct net2272 *dev = the_controller;
+        unsigned long flags;
+
+        if (!dev)
+                return -ENODEV;
+        if (!driver || driver != dev->driver)
+                return -EINVAL;
+
+        spin_lock_irqsave(&dev->lock, flags);
+        stop_activity(dev, driver);
+        spin_unlock_irqrestore(&dev->lock, flags);
+
+        net2272_pullup(&dev->gadget, 0);
+
+        driver->unbind(&dev->gadget);
+        dev->gadget.dev.driver = NULL;
+        dev->driver = NULL;
+
+        dev_dbg(dev->dev, "unregistered driver '%s'\n", driver->driver.name);
+        return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+/* handle ep-a/ep-b dma completions */
+static void
+net2272_handle_dma(struct net2272_ep *ep)
+{
+        struct net2272_request *req;
+        unsigned len;
+        int status;
+
+        if (!list_empty(&ep->queue))
+                req = list_entry(ep->queue.next,
+                                struct net2272_request, queue);
+        else
+                req = NULL;
+
+        dev_vdbg(ep->dev->dev, "handle_dma %s req %p\n", ep->ep.name, req);
+
+        /* Ensure DREQ is de-asserted */
+        net2272_write(ep->dev, DMAREQ,
+                (0 << DMA_BUFFER_VALID)
+              | (0 << DMA_REQUEST_ENABLE)
+              | (1 << DMA_CONTROL_DACK)
+              | (ep->dev->dma_eot_polarity << EOT_POLARITY)
+              | (ep->dev->dma_dack_polarity << DACK_POLARITY)
+              | (ep->dev->dma_dreq_polarity << DREQ_POLARITY)
+              | ((ep->dma >> 1) << DMA_ENDPOINT_SELECT));
+
+        ep->dev->dma_busy = 0;
+
+        net2272_ep_write(ep, EP_IRQENB,
+                  (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
+                | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
+                | net2272_ep_read(ep, EP_IRQENB));
+
+        /* device-to-host transfer completed */
+        if (ep->is_in) {
+                /* validate a short packet or zlp if necessary */
+                if ((req->req.length % ep->ep.maxpacket != 0) ||
+                                req->req.zero)
+                        set_fifo_bytecount(ep, 0);
+
+                net2272_done(ep, req, 0);
+                if (!list_empty(&ep->queue)) {
+                        req = list_entry(ep->queue.next,
+                                        struct net2272_request, queue);
+                        status = net2272_kick_dma(ep, req);
+                        if (status < 0)
+                                net2272_pio_advance(ep);
+                }
+
+        /* host-to-device transfer completed */
+        } else {
+                /* terminated with a short packet? */
+                if (net2272_read(ep->dev, IRQSTAT0) &
+                                (1 << DMA_DONE_INTERRUPT)) {
+                        /* abort system dma */
+                        net2272_cancel_dma(ep->dev);
+                }
+
+                /* EP_TRANSFER will contain the number of bytes
+                 * actually received.
+                 * NOTE: There is no overflow detection on EP_TRANSFER:
+                 * We can't deal with transfers larger than 2^24 bytes!
+                 */
+                len = (net2272_ep_read(ep, EP_TRANSFER2) << 16)
+                        | (net2272_ep_read(ep, EP_TRANSFER1) << 8)
+                        | (net2272_ep_read(ep, EP_TRANSFER0));
+
+                if (ep->not_empty)
+                        len += 4;
+
+                req->req.actual += len;
+
+                /* get any remaining data */
+                net2272_pio_advance(ep);
+        }
+}
+
+/*---------------------------------------------------------------------------*/
+
+static void
+net2272_handle_ep(struct net2272_ep *ep)
+{
+        struct net2272_request *req;
+        u8 stat0, stat1;
+
+        if (!list_empty(&ep->queue))
+                req = list_entry(ep->queue.next,
+                        struct net2272_request, queue);
+        else
+                req = NULL;
+
+        /* ack all, and handle what we care about */
+        stat0 = net2272_ep_read(ep, EP_STAT0);
+        stat1 = net2272_ep_read(ep, EP_STAT1);
+        ep->irqs++;
+
+        dev_vdbg(ep->dev->dev, "%s ack ep_stat0 %02x, ep_stat1 %02x, req %p\n",
+                ep->ep.name, stat0, stat1, req ? &req->req : 0);
+
+        net2272_ep_write(ep, EP_STAT0, stat0 &
+                ~((1 << NAK_OUT_PACKETS)
+                | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)));
+        net2272_ep_write(ep, EP_STAT1, stat1);
+
+        /* data packet(s) received (in the fifo, OUT)
+         * direction must be validated, otherwise control read status phase
+         * could be interpreted as a valid packet
+         */
+        if (!ep->is_in && (stat0 & (1 << DATA_PACKET_RECEIVED_INTERRUPT)))
+                net2272_pio_advance(ep);
+        /* data packet(s) transmitted (IN) */
+        else if (stat0 & (1 << DATA_PACKET_TRANSMITTED_INTERRUPT))
+                net2272_pio_advance(ep);
+}
+
+static struct net2272_ep *
+net2272_get_ep_by_addr(struct net2272 *dev, u16 wIndex)
+{
+        struct net2272_ep *ep;
+
+        if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0)
+                return &dev->ep[0];
+
+        list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) {
+                u8 bEndpointAddress;
+
+                if (!ep->desc)
+                        continue;
+                bEndpointAddress = ep->desc->bEndpointAddress;
+                if ((wIndex ^ bEndpointAddress) & USB_DIR_IN)
+                        continue;
+                if ((wIndex & 0x0f) == (bEndpointAddress & 0x0f))
+                        return ep;
+        }
+        return NULL;
+}
+
+/*
+ * USB Test Packet:
+ * JKJKJKJK * 9
+ * JJKKJJKK * 8
+ * JJJJKKKK * 8
+ * JJJJJJJKKKKKKK * 8
+ * JJJJJJJK * 8
+ * {JKKKKKKK * 10}, JK
+ */
+static const u8 net2272_test_packet[] = {
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
+        0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE,
+        0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+        0x7F, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD,
+        0xFC, 0x7E, 0xBF, 0xDF, 0xEF, 0xF7, 0xFD, 0x7E
+};
+
+static void
+net2272_set_test_mode(struct net2272 *dev, int mode)
+{
+        int i;
+
+        /* Disable all net2272 interrupts:
+         * Nothing but a power cycle should stop the test.
+         */
+        net2272_write(dev, IRQENB0, 0x00);
+        net2272_write(dev, IRQENB1, 0x00);
+
+        /* Force tranceiver to high-speed */
+        net2272_write(dev, XCVRDIAG, 1 << FORCE_HIGH_SPEED);
+
+        net2272_write(dev, PAGESEL, 0);
+        net2272_write(dev, EP_STAT0, 1 << DATA_PACKET_TRANSMITTED_INTERRUPT);
+        net2272_write(dev, EP_RSPCLR,
+                          (1 << CONTROL_STATUS_PHASE_HANDSHAKE)
+                        | (1 << HIDE_STATUS_PHASE));
+        net2272_write(dev, EP_CFG, 1 << ENDPOINT_DIRECTION);
+        net2272_write(dev, EP_STAT1, 1 << BUFFER_FLUSH);
+
+        /* wait for status phase to complete */
+        while (!(net2272_read(dev, EP_STAT0) &
+                                (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)))
+                ;
+
+        /* Enable test mode */
+        net2272_write(dev, USBTEST, mode);
+
+        /* load test packet */
+        if (mode == TEST_PACKET) {
+                /* switch to 8 bit mode */
+                net2272_write(dev, LOCCTL, net2272_read(dev, LOCCTL) &
+                                ~(1 << DATA_WIDTH));
+
+                for (i = 0; i < sizeof(net2272_test_packet); ++i)
+                        net2272_write(dev, EP_DATA, net2272_test_packet[i]);
+
+                /* Validate test packet */
+                net2272_write(dev, EP_TRANSFER0, 0);
+        }
+}
+
+static void
+net2272_handle_stat0_irqs(struct net2272 *dev, u8 stat)
+{
+        struct net2272_ep *ep;
+        u8 num, scratch;
+
+        /* starting a control request? */
+        if (unlikely(stat & (1 << SETUP_PACKET_INTERRUPT))) {
+                union {
+                        u8 raw[8];
+                        struct usb_ctrlrequest  r;
+                } u;
+                int tmp = 0;
+                struct net2272_request *req;
+
+                if (dev->gadget.speed == USB_SPEED_UNKNOWN) {
+                        if (net2272_read(dev, USBCTL1) & (1 << USB_HIGH_SPEED))
+                                dev->gadget.speed = USB_SPEED_HIGH;
+                        else
+                                dev->gadget.speed = USB_SPEED_FULL;
+                        dev_dbg(dev->dev, "%s speed\n",
+                                (dev->gadget.speed == USB_SPEED_HIGH) ? "high" : "full");
+                }
+
+                ep = &dev->ep[0];
+                ep->irqs++;
+
+                /* make sure any leftover interrupt state is cleared */
+                stat &= ~(1 << ENDPOINT_0_INTERRUPT);
+                while (!list_empty(&ep->queue)) {
+                        req = list_entry(ep->queue.next,
+                                struct net2272_request, queue);
+                        net2272_done(ep, req,
+                                (req->req.actual == req->req.length) ? 0 : -EPROTO);
+                }
+                ep->stopped = 0;
+                dev->protocol_stall = 0;
+                net2272_ep_write(ep, EP_STAT0,
+                            (1 << DATA_IN_TOKEN_INTERRUPT)
+                          | (1 << DATA_OUT_TOKEN_INTERRUPT)
+                          | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)
+                          | (1 << DATA_PACKET_RECEIVED_INTERRUPT)
+                          | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT));
+                net2272_ep_write(ep, EP_STAT1,
+                            (1 << TIMEOUT)
+                          | (1 << USB_OUT_ACK_SENT)
+                          | (1 << USB_OUT_NAK_SENT)
+                          | (1 << USB_IN_ACK_RCVD)
+                          | (1 << USB_IN_NAK_SENT)
+                          | (1 << USB_STALL_SENT)
+                          | (1 << LOCAL_OUT_ZLP));
+
+                /*
+                 * Ensure Control Read pre-validation setting is beyond maximum size
+                 *  - Control Writes can leave non-zero values in EP_TRANSFER. If
+                 *    an EP0 transfer following the Control Write is a Control Read,
+                 *    the NET2272 sees the non-zero EP_TRANSFER as an unexpected
+                 *    pre-validation count.
+                 *  - Setting EP_TRANSFER beyond the maximum EP0 transfer size ensures
+                 *    the pre-validation count cannot cause an unexpected validatation
+                 */
+                net2272_write(dev, PAGESEL, 0);
+                net2272_write(dev, EP_TRANSFER2, 0xff);
+                net2272_write(dev, EP_TRANSFER1, 0xff);
+                net2272_write(dev, EP_TRANSFER0, 0xff);
+
+                u.raw[0] = net2272_read(dev, SETUP0);
+                u.raw[1] = net2272_read(dev, SETUP1);
+                u.raw[2] = net2272_read(dev, SETUP2);
+                u.raw[3] = net2272_read(dev, SETUP3);
+                u.raw[4] = net2272_read(dev, SETUP4);
+                u.raw[5] = net2272_read(dev, SETUP5);
+                u.raw[6] = net2272_read(dev, SETUP6);
+                u.raw[7] = net2272_read(dev, SETUP7);
+                /*
+                 * If you have a big endian cpu make sure le16_to_cpus
+                 * performs the proper byte swapping here...
+                 */
+                le16_to_cpus(&u.r.wValue);
+                le16_to_cpus(&u.r.wIndex);
+                le16_to_cpus(&u.r.wLength);
+
+                /* ack the irq */
+                net2272_write(dev, IRQSTAT0, 1 << SETUP_PACKET_INTERRUPT);
+                stat ^= (1 << SETUP_PACKET_INTERRUPT);
+
+                /* watch control traffic at the token level, and force
+                 * synchronization before letting the status phase happen.
+                 */
+                ep->is_in = (u.r.bRequestType & USB_DIR_IN) != 0;
+                if (ep->is_in) {
+                        scratch = (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
+                                | (1 << DATA_OUT_TOKEN_INTERRUPT_ENABLE)
+                                | (1 << DATA_IN_TOKEN_INTERRUPT_ENABLE);
+                        stop_out_naking(ep);
+                } else
+                        scratch = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
+                                | (1 << DATA_OUT_TOKEN_INTERRUPT_ENABLE)
+                                | (1 << DATA_IN_TOKEN_INTERRUPT_ENABLE);
+                net2272_ep_write(ep, EP_IRQENB, scratch);
+
+                if ((u.r.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD)
+                        goto delegate;
+                switch (u.r.bRequest) {
+                case USB_REQ_GET_STATUS: {
+                        struct net2272_ep *e;
+                        u16 status = 0;
+
+                        switch (u.r.bRequestType & USB_RECIP_MASK) {
+                        case USB_RECIP_ENDPOINT:
+                                e = net2272_get_ep_by_addr(dev, u.r.wIndex);
+                                if (!e || u.r.wLength > 2)
+                                        goto do_stall;
+                                if (net2272_ep_read(e, EP_RSPSET) & (1 << ENDPOINT_HALT))
+                                        status = __constant_cpu_to_le16(1);
+                                else
+                                        status = __constant_cpu_to_le16(0);
+
+                                /* don't bother with a request object! */
+                                net2272_ep_write(&dev->ep[0], EP_IRQENB, 0);
+                                writew(status, net2272_reg_addr(dev, EP_DATA));
+                                set_fifo_bytecount(&dev->ep[0], 0);
+                                allow_status(ep);
+                                dev_vdbg(dev->dev, "%s stat %02x\n",
+                                        ep->ep.name, status);
+                                goto next_endpoints;
+                        case USB_RECIP_DEVICE:
+                                if (u.r.wLength > 2)
+                                        goto do_stall;
+                                if (dev->is_selfpowered)
+                                        status = (1 << USB_DEVICE_SELF_POWERED);
+
+                                /* don't bother with a request object! */
+                                net2272_ep_write(&dev->ep[0], EP_IRQENB, 0);
+                                writew(status, net2272_reg_addr(dev, EP_DATA));
+                                set_fifo_bytecount(&dev->ep[0], 0);
+                                allow_status(ep);
+                                dev_vdbg(dev->dev, "device stat %02x\n", status);
+                                goto next_endpoints;
+                        case USB_RECIP_INTERFACE:
+                                if (u.r.wLength > 2)
+                                        goto do_stall;
+
+                                /* don't bother with a request object! */
+                                net2272_ep_write(&dev->ep[0], EP_IRQENB, 0);
+                                writew(status, net2272_reg_addr(dev, EP_DATA));
+                                set_fifo_bytecount(&dev->ep[0], 0);
+                                allow_status(ep);
+                                dev_vdbg(dev->dev, "interface status %02x\n", status);
+                                goto next_endpoints;
+                        }
+
+                        break;
+                }
+                case USB_REQ_CLEAR_FEATURE: {
+                        struct net2272_ep *e;
+
+                        if (u.r.bRequestType != USB_RECIP_ENDPOINT)
+                                goto delegate;
+                        if (u.r.wValue != USB_ENDPOINT_HALT ||
+                            u.r.wLength != 0)
+                                goto do_stall;
+                        e = net2272_get_ep_by_addr(dev, u.r.wIndex);
+                        if (!e)
+                                goto do_stall;
+                        if (e->wedged) {
+                                dev_vdbg(dev->dev, "%s wedged, halt not cleared\n",
+                                        ep->ep.name);
+                        } else {
+                                dev_vdbg(dev->dev, "%s clear halt\n", ep->ep.name);
+                                clear_halt(e);
+                        }
+                        allow_status(ep);
+                        goto next_endpoints;
+                }
+                case USB_REQ_SET_FEATURE: {
+                        struct net2272_ep *e;
+
+                        if (u.r.bRequestType == USB_RECIP_DEVICE) {
+                                if (u.r.wIndex != NORMAL_OPERATION)
+                                        net2272_set_test_mode(dev, (u.r.wIndex >> 8));
+                                allow_status(ep);
+                                dev_vdbg(dev->dev, "test mode: %d\n", u.r.wIndex);
+                                goto next_endpoints;
+                        } else if (u.r.bRequestType != USB_RECIP_ENDPOINT)
+                                goto delegate;
+                        if (u.r.wValue != USB_ENDPOINT_HALT ||
+                            u.r.wLength != 0)
+                                goto do_stall;
+                        e = net2272_get_ep_by_addr(dev, u.r.wIndex);
+                        if (!e)
+                                goto do_stall;
+                        set_halt(e);
+                        allow_status(ep);
+                        dev_vdbg(dev->dev, "%s set halt\n", ep->ep.name);
+                        goto next_endpoints;
+                }
+                case USB_REQ_SET_ADDRESS: {
+                        net2272_write(dev, OURADDR, u.r.wValue & 0xff);
+                        allow_status(ep);
+                        break;
+                }
+                default:
+ delegate:
+                        dev_vdbg(dev->dev, "setup %02x.%02x v%04x i%04x "
+                                "ep_cfg %08x\n",
+                                u.r.bRequestType, u.r.bRequest,
+                                u.r.wValue, u.r.wIndex,
+                                net2272_ep_read(ep, EP_CFG));
+                        spin_unlock(&dev->lock);
+                        tmp = dev->driver->setup(&dev->gadget, &u.r);
+                        spin_lock(&dev->lock);
+                }
+
+                /* stall ep0 on error */
+                if (tmp < 0) {
+ do_stall:
+                        dev_vdbg(dev->dev, "req %02x.%02x protocol STALL; stat %d\n",
+                                u.r.bRequestType, u.r.bRequest, tmp);
+                        dev->protocol_stall = 1;
+                }
+        /* endpoint dma irq? */
+        } else if (stat & (1 << DMA_DONE_INTERRUPT)) {
+                net2272_cancel_dma(dev);
+                net2272_write(dev, IRQSTAT0, 1 << DMA_DONE_INTERRUPT);
+                stat &= ~(1 << DMA_DONE_INTERRUPT);
+                num = (net2272_read(dev, DMAREQ) & (1 << DMA_ENDPOINT_SELECT))
+                        ? 2 : 1;
+
+                ep = &dev->ep[num];
+                net2272_handle_dma(ep);
+        }
+
+ next_endpoints:
+        /* endpoint data irq? */
+        scratch = stat & 0x0f;
+        stat &= ~0x0f;
+        for (num = 0; scratch; num++) {
+                u8 t;
+
+                /* does this endpoint's FIFO and queue need tending? */
+                t = 1 << num;
+                if ((scratch & t) == 0)
+                        continue;
+                scratch ^= t;
+
+                ep = &dev->ep[num];
+                net2272_handle_ep(ep);
+        }
+
+        /* some interrupts we can just ignore */
+        stat &= ~(1 << SOF_INTERRUPT);
+
+        if (stat)
+                dev_dbg(dev->dev, "unhandled irqstat0 %02x\n", stat);
+}
+
+static void
+net2272_handle_stat1_irqs(struct net2272 *dev, u8 stat)
+{
+        u8 tmp, mask;
+
+        /* after disconnect there's nothing else to do! */
+        tmp = (1 << VBUS_INTERRUPT) | (1 << ROOT_PORT_RESET_INTERRUPT);
+        mask = (1 << USB_HIGH_SPEED) | (1 << USB_FULL_SPEED);
+
+        if (stat & tmp) {
+                net2272_write(dev, IRQSTAT1, tmp);
+                if ((((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) &&
+                                ((net2272_read(dev, USBCTL1) & mask) == 0))
+                        || ((net2272_read(dev, USBCTL1) & (1 << VBUS_PIN))
+                                == 0))
+                                && (dev->gadget.speed != USB_SPEED_UNKNOWN)) {
+                        dev_dbg(dev->dev, "disconnect %s\n",
+                                dev->driver->driver.name);
+                        stop_activity(dev, dev->driver);
+                        net2272_ep0_start(dev);
+                        return;
+                }
+                stat &= ~tmp;
+
+                if (!stat)
+                        return;
+        }
+
+        tmp = (1 << SUSPEND_REQUEST_CHANGE_INTERRUPT);
+        if (stat & tmp) {
+                net2272_write(dev, IRQSTAT1, tmp);
+                if (stat & (1 << SUSPEND_REQUEST_INTERRUPT)) {
+                        if (dev->driver->suspend)
+                                dev->driver->suspend(&dev->gadget);
+                        if (!enable_suspend) {
+                                stat &= ~(1 << SUSPEND_REQUEST_INTERRUPT);
+                                dev_dbg(dev->dev, "Suspend disabled, ignoring\n");
+                        }
+                } else {
+                        if (dev->driver->resume)
+                                dev->driver->resume(&dev->gadget);
+                }
+                stat &= ~tmp;
+        }
+
+        /* clear any other status/irqs */
+        if (stat)
+                net2272_write(dev, IRQSTAT1, stat);
+
+        /* some status we can just ignore */
+        stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
+                        | (1 << SUSPEND_REQUEST_INTERRUPT)
+                        | (1 << RESUME_INTERRUPT));
+        if (!stat)
+                return;
+        else
+                dev_dbg(dev->dev, "unhandled irqstat1 %02x\n", stat);
+}
+
+static irqreturn_t net2272_irq(int irq, void *_dev)
+{
+        struct net2272 *dev = _dev;
+#if defined(PLX_PCI_RDK) || defined(PLX_PCI_RDK2)
+        u32 intcsr;
+#endif
+#if defined(PLX_PCI_RDK)
+        u8 dmareq;
+#endif
+        spin_lock(&dev->lock);
+#if defined(PLX_PCI_RDK)
+        intcsr = readl(dev->rdk1.plx9054_base_addr + INTCSR);
+
+        if ((intcsr & LOCAL_INTERRUPT_TEST) == LOCAL_INTERRUPT_TEST) {
+                writel(intcsr & ~(1 << PCI_INTERRUPT_ENABLE),
+                                dev->rdk1.plx9054_base_addr + INTCSR);
+                net2272_handle_stat1_irqs(dev, net2272_read(dev, IRQSTAT1));
+                net2272_handle_stat0_irqs(dev, net2272_read(dev, IRQSTAT0));
+                intcsr = readl(dev->rdk1.plx9054_base_addr + INTCSR);
+                writel(intcsr | (1 << PCI_INTERRUPT_ENABLE),
+                        dev->rdk1.plx9054_base_addr + INTCSR);
+        }
+        if ((intcsr & DMA_CHANNEL_0_TEST) == DMA_CHANNEL_0_TEST) {
+                writeb((1 << CHANNEL_CLEAR_INTERRUPT | (0 << CHANNEL_ENABLE)),
+                                dev->rdk1.plx9054_base_addr + DMACSR0);
+
+                dmareq = net2272_read(dev, DMAREQ);
+                if (dmareq & 0x01)
+                        net2272_handle_dma(&dev->ep[2]);
+                else
+                        net2272_handle_dma(&dev->ep[1]);
+        }
+#endif
+#if defined(PLX_PCI_RDK2)
+        /* see if PCI int for us by checking irqstat */
+        intcsr = readl(dev->rdk2.fpga_base_addr + RDK2_IRQSTAT);
+        if (!intcsr & (1 << NET2272_PCI_IRQ))
+                return IRQ_NONE;
+        /* check dma interrupts */
+#endif
+        /* Platform/devcice interrupt handler */
+#if !defined(PLX_PCI_RDK)
+        net2272_handle_stat1_irqs(dev, net2272_read(dev, IRQSTAT1));
+        net2272_handle_stat0_irqs(dev, net2272_read(dev, IRQSTAT0));
+#endif
+        spin_unlock(&dev->lock);
+
+        return IRQ_HANDLED;
+}
+
+static int net2272_present(struct net2272 *dev)
+{
+        /*
+         * Quick test to see if CPU can communicate properly with the NET2272.
+         * Verifies connection using writes and reads to write/read and
+         * read-only registers.
+         *
+         * This routine is strongly recommended especially during early bring-up
+         * of new hardware, however for designs that do not apply Power On System
+         * Tests (POST) it may discarded (or perhaps minimized).
+         */
+        unsigned int ii;
+        u8 val, refval;
+
+        /* Verify NET2272 write/read SCRATCH register can write and read */
+        refval = net2272_read(dev, SCRATCH);
+        for (ii = 0; ii < 0x100; ii += 7) {
+                net2272_write(dev, SCRATCH, ii);
+                val = net2272_read(dev, SCRATCH);
+                if (val != ii) {
+                        dev_dbg(dev->dev,
+                                "%s: write/read SCRATCH register test failed: "
+                                "wrote:0x%2.2x, read:0x%2.2x\n",
+                                __func__, ii, val);
+                        return -EINVAL;
+                }
+        }
+        /* To be nice, we write the original SCRATCH value back: */
+        net2272_write(dev, SCRATCH, refval);
+
+        /* Verify NET2272 CHIPREV register is read-only: */
+        refval = net2272_read(dev, CHIPREV_2272);
+        for (ii = 0; ii < 0x100; ii += 7) {
+                net2272_write(dev, CHIPREV_2272, ii);
+                val = net2272_read(dev, CHIPREV_2272);
+                if (val != refval) {
+                        dev_dbg(dev->dev,
+                                "%s: write/read CHIPREV register test failed: "
+                                "wrote 0x%2.2x, read:0x%2.2x expected:0x%2.2x\n",
+                                __func__, ii, val, refval);
+                        return -EINVAL;
+                }
+        }
+
+        /*
+         * Verify NET2272's "NET2270 legacy revision" register
+         *  - NET2272 has two revision registers. The NET2270 legacy revision
+         *    register should read the same value, regardless of the NET2272
+         *    silicon revision.  The legacy register applies to NET2270
+         *    firmware being applied to the NET2272.
+         */
+        val = net2272_read(dev, CHIPREV_LEGACY);
+        if (val != NET2270_LEGACY_REV) {
+                /*
+                 * Unexpected legacy revision value
+                 * - Perhaps the chip is a NET2270?
+                 */
+                dev_dbg(dev->dev,
+                        "%s: WARNING: UNEXPECTED NET2272 LEGACY REGISTER VALUE:\n"
+                        " - CHIPREV_LEGACY: expected 0x%2.2x, got:0x%2.2x. (Not NET2272?)\n",
+                        __func__, NET2270_LEGACY_REV, val);
+                return -EINVAL;
+        }
+
+        /*
+         * Verify NET2272 silicon revision
+         *  - This revision register is appropriate for the silicon version
+         *    of the NET2272
+         */
+        val = net2272_read(dev, CHIPREV_2272);
+        switch (val) {
+        case CHIPREV_NET2272_R1:
+                /*
+                 * NET2272 Rev 1 has DMA related errata:
+                 *  - Newer silicon (Rev 1A or better) required
+                 */
+                dev_dbg(dev->dev,
+                        "%s: Rev 1 detected: newer silicon recommended for DMA support\n",
+                        __func__);
+                break;
+        case CHIPREV_NET2272_R1A:
+                break;
+        default:
+                /* NET2272 silicon version *may* not work with this firmware */
+                dev_dbg(dev->dev,
+                        "%s: unexpected silicon revision register value: "
+                        " CHIPREV_2272: 0x%2.2x\n",
+                        __func__, val);
+                /*
+                 * Return Success, even though the chip rev is not an expected value
+                 *  - Older, pre-built firmware can attempt to operate on newer silicon
+                 *  - Often, new silicon is perfectly compatible
+                 */
+        }
+
+        /* Success: NET2272 checks out OK */
+        return 0;
+}
+
+static void
+net2272_gadget_release(struct device *_dev)
+{
+        struct net2272 *dev = dev_get_drvdata(_dev);
+        kfree(dev);
+}
+
+/*---------------------------------------------------------------------------*/
+
+static void __devexit
+net2272_remove(struct net2272 *dev)
+{
+        usb_del_gadget_udc(&dev->gadget);
+
+        /* start with the driver above us */
+        if (dev->driver) {
+                /* should have been done already by driver model core */
+                dev_warn(dev->dev, "pci remove, driver '%s' is still registered\n",
+                        dev->driver->driver.name);
+                usb_gadget_unregister_driver(dev->driver);
+        }
+
+        free_irq(dev->irq, dev);
+        iounmap(dev->base_addr);
+
+        device_unregister(&dev->gadget.dev);
+        device_remove_file(dev->dev, &dev_attr_registers);
+
+        dev_info(dev->dev, "unbind\n");
+        the_controller = NULL;
+}
+
+static struct net2272 * __devinit
+net2272_probe_init(struct device *dev, unsigned int irq)
+{
+        struct net2272 *ret;
+
+        if (the_controller) {
+                dev_warn(dev, "ignoring\n");
+                return ERR_PTR(-EBUSY);
+        }
+
+        if (!irq) {
+                dev_dbg(dev, "No IRQ!\n");
+                return ERR_PTR(-ENODEV);
+        }
+
+        /* alloc, and start init */
+        ret = kzalloc(sizeof(*ret), GFP_KERNEL);
+        if (!ret)
+                return ERR_PTR(-ENOMEM);
+
+        spin_lock_init(&ret->lock);
+        ret->irq = irq;
+        ret->dev = dev;
+        ret->gadget.ops = &net2272_ops;
+        ret->gadget.is_dualspeed = 1;
+
+        /* the "gadget" abstracts/virtualizes the controller */
+        dev_set_name(&ret->gadget.dev, "gadget");
+        ret->gadget.dev.parent = dev;
+        ret->gadget.dev.dma_mask = dev->dma_mask;
+        ret->gadget.dev.release = net2272_gadget_release;
+        ret->gadget.name = driver_name;
+
+        return ret;
+}
+
+static int __devinit
+net2272_probe_fin(struct net2272 *dev, unsigned int irqflags)
+{
+        int ret;
+
+        /* See if there... */
+        if (net2272_present(dev)) {
+                dev_warn(dev->dev, "2272 not found!\n");
+                ret = -ENODEV;
+                goto err;
+        }
+
+        net2272_usb_reset(dev);
+        net2272_usb_reinit(dev);
+
+        ret = request_irq(dev->irq, net2272_irq, irqflags, driver_name, dev);
+        if (ret) {
+                dev_err(dev->dev, "request interrupt %i failed\n", dev->irq);
+                goto err;
+        }
+
+        dev->chiprev = net2272_read(dev, CHIPREV_2272);
+
+        /* done */
+        dev_info(dev->dev, "%s\n", driver_desc);
+        dev_info(dev->dev, "irq %i, mem %p, chip rev %04x, dma %s\n",
+                dev->irq, dev->base_addr, dev->chiprev,
+                dma_mode_string());
+        dev_info(dev->dev, "version: %s\n", driver_vers);
+
+        the_controller = dev;
+
+        ret = device_register(&dev->gadget.dev);
+        if (ret)
+                goto err_irq;
+        ret = device_create_file(dev->dev, &dev_attr_registers);
+        if (ret)
+                goto err_dev_reg;
+
+        ret = usb_add_gadget_udc(dev->dev, &dev->gadget);
+        if (ret)
+                goto err_add_udc;
+
+        return 0;
+
+err_add_udc:
+        device_remove_file(dev->dev, &dev_attr_registers);
+ err_dev_reg:
+        device_unregister(&dev->gadget.dev);
+ err_irq:
+        free_irq(dev->irq, dev);
+ err:
+        return ret;
+}
+
+#ifdef CONFIG_PCI
+
+/*
+ * wrap this driver around the specified device, but
+ * don't respond over USB until a gadget driver binds to us
+ */
+
+static int __devinit
+net2272_rdk1_probe(struct pci_dev *pdev, struct net2272 *dev)
+{
+        unsigned long resource, len, tmp;
+        void __iomem *mem_mapped_addr[4];
+        int ret, i;
+
+        /*
+         * BAR 0 holds PLX 9054 config registers
+         * BAR 1 is i/o memory; unused here
+         * BAR 2 holds EPLD config registers
+         * BAR 3 holds NET2272 registers
+         */
+
+        /* Find and map all address spaces */
+        for (i = 0; i < 4; ++i) {
+                if (i == 1)
+                        continue;       /* BAR1 unused */
+
+                resource = pci_resource_start(pdev, i);
+                len = pci_resource_len(pdev, i);
+
+                if (!request_mem_region(resource, len, driver_name)) {
+                        dev_dbg(dev->dev, "controller already in use\n");
+                        ret = -EBUSY;
+                        goto err;
+                }
+
+                mem_mapped_addr[i] = ioremap_nocache(resource, len);
+                if (mem_mapped_addr[i] == NULL) {
+                        release_mem_region(resource, len);
+                        dev_dbg(dev->dev, "can't map memory\n");
+                        ret = -EFAULT;
+                        goto err;
+                }
+        }
+
+        dev->rdk1.plx9054_base_addr = mem_mapped_addr[0];
+        dev->rdk1.epld_base_addr = mem_mapped_addr[2];
+        dev->base_addr = mem_mapped_addr[3];
+
+        /* Set PLX 9054 bus width (16 bits) */
+        tmp = readl(dev->rdk1.plx9054_base_addr + LBRD1);
+        writel((tmp & ~(3 << MEMORY_SPACE_LOCAL_BUS_WIDTH)) | W16_BIT,
+                        dev->rdk1.plx9054_base_addr + LBRD1);
+
+        /* Enable PLX 9054 Interrupts */
+        writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) |
+                        (1 << PCI_INTERRUPT_ENABLE) |
+                        (1 << LOCAL_INTERRUPT_INPUT_ENABLE),
+                        dev->rdk1.plx9054_base_addr + INTCSR);
+
+        writeb((1 << CHANNEL_CLEAR_INTERRUPT | (0 << CHANNEL_ENABLE)),
+                        dev->rdk1.plx9054_base_addr + DMACSR0);
+
+        /* reset */
+        writeb((1 << EPLD_DMA_ENABLE) |
+                (1 << DMA_CTL_DACK) |
+                (1 << DMA_TIMEOUT_ENABLE) |
+                (1 << USER) |
+                (0 << MPX_MODE) |
+                (1 << BUSWIDTH) |
+                (1 << NET2272_RESET),
+                dev->base_addr + EPLD_IO_CONTROL_REGISTER);
+
+        mb();
+        writeb(readb(dev->base_addr + EPLD_IO_CONTROL_REGISTER) &
+                ~(1 << NET2272_RESET),
+                dev->base_addr + EPLD_IO_CONTROL_REGISTER);
+        udelay(200);
+
+        return 0;
+
+ err:
+        while (--i >= 0) {
+                iounmap(mem_mapped_addr[i]);
+                release_mem_region(pci_resource_start(pdev, i),
+                        pci_resource_len(pdev, i));
+        }
+
+        return ret;
+}
+
+static int __devinit
+net2272_rdk2_probe(struct pci_dev *pdev, struct net2272 *dev)
+{
+        unsigned long resource, len;
+        void __iomem *mem_mapped_addr[2];
+        int ret, i;
+
+        /*
+         * BAR 0 holds FGPA config registers
+         * BAR 1 holds NET2272 registers
+         */
+
+        /* Find and map all address spaces, bar2-3 unused in rdk 2 */
+        for (i = 0; i < 2; ++i) {
+                resource = pci_resource_start(pdev, i);
+                len = pci_resource_len(pdev, i);
+
+                if (!request_mem_region(resource, len, driver_name)) {
+                        dev_dbg(dev->dev, "controller already in use\n");
+                        ret = -EBUSY;
+                        goto err;
+                }
+
+                mem_mapped_addr[i] = ioremap_nocache(resource, len);
+                if (mem_mapped_addr[i] == NULL) {
+                        release_mem_region(resource, len);
+                        dev_dbg(dev->dev, "can't map memory\n");
+                        ret = -EFAULT;
+                        goto err;
+                }
+        }
+
+        dev->rdk2.fpga_base_addr = mem_mapped_addr[0];
+        dev->base_addr = mem_mapped_addr[1];
+
+        mb();
+        /* Set 2272 bus width (16 bits) and reset */
+        writel((1 << CHIP_RESET), dev->rdk2.fpga_base_addr + RDK2_LOCCTLRDK);
+        udelay(200);
+        writel((1 << BUS_WIDTH), dev->rdk2.fpga_base_addr + RDK2_LOCCTLRDK);
+        /* Print fpga version number */
+        dev_info(dev->dev, "RDK2 FPGA version %08x\n",
+                readl(dev->rdk2.fpga_base_addr + RDK2_FPGAREV));
+        /* Enable FPGA Interrupts */
+        writel((1 << NET2272_PCI_IRQ), dev->rdk2.fpga_base_addr + RDK2_IRQENB);
+
+        return 0;
+
+ err:
+        while (--i >= 0) {
+                iounmap(mem_mapped_addr[i]);
+                release_mem_region(pci_resource_start(pdev, i),
+                        pci_resource_len(pdev, i));
+        }
+
+        return ret;
+}
+
+static int __devinit
+net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+        struct net2272 *dev;
+        int ret;
+
+        dev = net2272_probe_init(&pdev->dev, pdev->irq);
+        if (IS_ERR(dev))
+                return PTR_ERR(dev);
+        dev->dev_id = pdev->device;
+
+        if (pci_enable_device(pdev) < 0) {
+                ret = -ENODEV;
+                goto err_free;
+        }
+
+        pci_set_master(pdev);
+
+        switch (pdev->device) {
+        case PCI_DEVICE_ID_RDK1: ret = net2272_rdk1_probe(pdev, dev); break;
+        case PCI_DEVICE_ID_RDK2: ret = net2272_rdk2_probe(pdev, dev); break;
+        default: BUG();
+        }
+        if (ret)
+                goto err_pci;
+
+        ret = net2272_probe_fin(dev, 0);
+        if (ret)
+                goto err_pci;
+
+        pci_set_drvdata(pdev, dev);
+
+        return 0;
+
+ err_pci:
+        pci_disable_device(pdev);
+ err_free:
+        kfree(dev);
+
+        return ret;
+}
+
+static void __devexit
+net2272_rdk1_remove(struct pci_dev *pdev, struct net2272 *dev)
+{
+        int i;
+
+        /* disable PLX 9054 interrupts */
+        writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) &
+                ~(1 << PCI_INTERRUPT_ENABLE),
+                dev->rdk1.plx9054_base_addr + INTCSR);
+
+        /* clean up resources allocated during probe() */
+        iounmap(dev->rdk1.plx9054_base_addr);
+        iounmap(dev->rdk1.epld_base_addr);
+
+        for (i = 0; i < 4; ++i) {
+                if (i == 1)
+                        continue;       /* BAR1 unused */
+                release_mem_region(pci_resource_start(pdev, i),
+                        pci_resource_len(pdev, i));
+        }
+}
+
+static void __devexit
+net2272_rdk2_remove(struct pci_dev *pdev, struct net2272 *dev)
+{
+        int i;
+
+        /* disable fpga interrupts
+        writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) &
+                        ~(1 << PCI_INTERRUPT_ENABLE),
+                        dev->rdk1.plx9054_base_addr + INTCSR);
+        */
+
+        /* clean up resources allocated during probe() */
+        iounmap(dev->rdk2.fpga_base_addr);
+
+        for (i = 0; i < 2; ++i)
+                release_mem_region(pci_resource_start(pdev, i),
+                        pci_resource_len(pdev, i));
+}
+
+static void __devexit
+net2272_pci_remove(struct pci_dev *pdev)
+{
+        struct net2272 *dev = pci_get_drvdata(pdev);
+
+        net2272_remove(dev);
+
+        switch (pdev->device) {
+        case PCI_DEVICE_ID_RDK1: net2272_rdk1_remove(pdev, dev); break;
+        case PCI_DEVICE_ID_RDK2: net2272_rdk2_remove(pdev, dev); break;
+        default: BUG();
+        }
+
+        pci_disable_device(pdev);
+
+        kfree(dev);
+}
+
+/* Table of matching PCI IDs */
+static struct pci_device_id __devinitdata pci_ids[] = {
+        {       /* RDK 1 card */
+                .class       = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe),
+                .class_mask  = 0,
+                .vendor      = PCI_VENDOR_ID_PLX,
+                .device      = PCI_DEVICE_ID_RDK1,
+                .subvendor   = PCI_ANY_ID,
+                .subdevice   = PCI_ANY_ID,
+        },
+        {       /* RDK 2 card */
+                .class       = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe),
+                .class_mask  = 0,
+                .vendor      = PCI_VENDOR_ID_PLX,
+                .device      = PCI_DEVICE_ID_RDK2,
+                .subvendor   = PCI_ANY_ID,
+                .subdevice   = PCI_ANY_ID,
+        },
+        { }
+};
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+static struct pci_driver net2272_pci_driver = {
+        .name     = driver_name,
+        .id_table = pci_ids,
+
+        .probe    = net2272_pci_probe,
+        .remove   = __devexit_p(net2272_pci_remove),
+};
+
+static int net2272_pci_register(void)
+{
+        return pci_register_driver(&net2272_pci_driver);
+}
+
+static void net2272_pci_unregister(void)
+{
+        pci_unregister_driver(&net2272_pci_driver);
+}
+
+#else
+static inline int net2272_pci_register(void) { return 0; }
+static inline void net2272_pci_unregister(void) { }
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+static int __devinit
+net2272_plat_probe(struct platform_device *pdev)
+{
+        struct net2272 *dev;
+        int ret;
+        unsigned int irqflags;
+        resource_size_t base, len;
+        struct resource *iomem, *iomem_bus, *irq_res;
+
+        irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        iomem_bus = platform_get_resource(pdev, IORESOURCE_BUS, 0);
+        if (!irq_res || !iomem) {
+                dev_err(&pdev->dev, "must provide irq/base addr");
+                return -EINVAL;
+        }
+
+        dev = net2272_probe_init(&pdev->dev, irq_res->start);
+        if (IS_ERR(dev))
+                return PTR_ERR(dev);
+
+        irqflags = 0;
+        if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE)
+                irqflags |= IRQF_TRIGGER_RISING;
+        if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE)
+                irqflags |= IRQF_TRIGGER_FALLING;
+        if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL)
+                irqflags |= IRQF_TRIGGER_HIGH;
+        if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL)
+                irqflags |= IRQF_TRIGGER_LOW;
+
+        base = iomem->start;
+        len = resource_size(iomem);
+        if (iomem_bus)
+                dev->base_shift = iomem_bus->start;
+
+        if (!request_mem_region(base, len, driver_name)) {
+                dev_dbg(dev->dev, "get request memory region!\n");
+                ret = -EBUSY;
+                goto err;
+        }
+        dev->base_addr = ioremap_nocache(base, len);
+        if (!dev->base_addr) {
+                dev_dbg(dev->dev, "can't map memory\n");
+                ret = -EFAULT;
+                goto err_req;
+        }
+
+        ret = net2272_probe_fin(dev, IRQF_TRIGGER_LOW);
+        if (ret)
+                goto err_io;
+
+        platform_set_drvdata(pdev, dev);
+        dev_info(&pdev->dev, "running in 16-bit, %sbyte swap local bus mode\n",
+                (net2272_read(dev, LOCCTL) & (1 << BYTE_SWAP)) ? "" : "no ");
+
+        the_controller = dev;
+
+        return 0;
+
+ err_io:
+        iounmap(dev->base_addr);
+ err_req:
+        release_mem_region(base, len);
+ err:
+        return ret;
+}
+
+static int __devexit
+net2272_plat_remove(struct platform_device *pdev)
+{
+        struct net2272 *dev = platform_get_drvdata(pdev);
+
+        net2272_remove(dev);
+
+        release_mem_region(pdev->resource[0].start,
+                resource_size(&pdev->resource[0]));
+
+        kfree(dev);
+
+        return 0;
+}
+
+static struct platform_driver net2272_plat_driver = {
+        .probe   = net2272_plat_probe,
+        .remove  = __devexit_p(net2272_plat_remove),
+        .driver  = {
+                .name  = driver_name,
+                .owner = THIS_MODULE,
+        },
+        /* FIXME .suspend, .resume */
+};
+MODULE_ALIAS("platform:net2272");
+
+static int __init net2272_init(void)
+{
+        int ret;
+
+        ret = net2272_pci_register();
+        if (ret)
+                return ret;
+        ret = platform_driver_register(&net2272_plat_driver);
+        if (ret)
+                goto err_pci;
+        return ret;
+
+err_pci:
+        net2272_pci_unregister();
+        return ret;
+}
+module_init(net2272_init);
+
+static void __exit net2272_cleanup(void)
+{
+        net2272_pci_unregister();
+        platform_driver_unregister(&net2272_plat_driver);
+}
+module_exit(net2272_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("PLX Technology, Inc.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/net2272.h b/drivers/usb/gadget/net2272.h
new file mode 100644
index 000000000000..e59505789359
--- /dev/null
+++ b/drivers/usb/gadget/net2272.h
@@ -0,0 +1,601 @@
+/*
+ * PLX NET2272 high/full speed USB device controller
+ *
+ * Copyright (C) 2005-2006 PLX Technology, Inc.
+ * Copyright (C) 2006-2011 Analog Devices, 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, 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __NET2272_H__
+#define __NET2272_H__
+
+/* Main Registers */
+#define REGADDRPTR                      0x00
+#define REGDATA                         0x01
+#define IRQSTAT0                        0x02
+#define         ENDPOINT_0_INTERRUPT                    0
+#define         ENDPOINT_A_INTERRUPT                    1
+#define         ENDPOINT_B_INTERRUPT                    2
+#define         ENDPOINT_C_INTERRUPT                    3
+#define         VIRTUALIZED_ENDPOINT_INTERRUPT          4
+#define         SETUP_PACKET_INTERRUPT                  5
+#define         DMA_DONE_INTERRUPT                      6
+#define         SOF_INTERRUPT                           7
+#define IRQSTAT1                        0x03
+#define         CONTROL_STATUS_INTERRUPT                1
+#define         VBUS_INTERRUPT                          2
+#define         SUSPEND_REQUEST_INTERRUPT               3
+#define         SUSPEND_REQUEST_CHANGE_INTERRUPT        4
+#define         RESUME_INTERRUPT                        5
+#define         ROOT_PORT_RESET_INTERRUPT               6
+#define         RESET_STATUS                            7
+#define PAGESEL                         0x04
+#define DMAREQ                          0x1c
+#define         DMA_ENDPOINT_SELECT                     0
+#define         DREQ_POLARITY                           1
+#define         DACK_POLARITY                           2
+#define         EOT_POLARITY                            3
+#define         DMA_CONTROL_DACK                        4
+#define         DMA_REQUEST_ENABLE                      5
+#define         DMA_REQUEST                             6
+#define         DMA_BUFFER_VALID                        7
+#define SCRATCH                         0x1d
+#define IRQENB0                         0x20
+#define         ENDPOINT_0_INTERRUPT_ENABLE             0
+#define         ENDPOINT_A_INTERRUPT_ENABLE             1
+#define         ENDPOINT_B_INTERRUPT_ENABLE             2
+#define         ENDPOINT_C_INTERRUPT_ENABLE             3
+#define         VIRTUALIZED_ENDPOINT_INTERRUPT_ENABLE   4
+#define         SETUP_PACKET_INTERRUPT_ENABLE           5
+#define         DMA_DONE_INTERRUPT_ENABLE               6
+#define         SOF_INTERRUPT_ENABLE                    7
+#define IRQENB1                         0x21
+#define         VBUS_INTERRUPT_ENABLE                   2
+#define         SUSPEND_REQUEST_INTERRUPT_ENABLE        3
+#define         SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 4
+#define         RESUME_INTERRUPT_ENABLE                 5
+#define         ROOT_PORT_RESET_INTERRUPT_ENABLE        6
+#define LOCCTL                          0x22
+#define         DATA_WIDTH                              0
+#define         LOCAL_CLOCK_OUTPUT                      1
+#define                 LOCAL_CLOCK_OUTPUT_OFF                  0
+#define                 LOCAL_CLOCK_OUTPUT_3_75MHZ              1
+#define                 LOCAL_CLOCK_OUTPUT_7_5MHZ               2
+#define                 LOCAL_CLOCK_OUTPUT_15MHZ                3
+#define                 LOCAL_CLOCK_OUTPUT_30MHZ                4
+#define                 LOCAL_CLOCK_OUTPUT_60MHZ                5
+#define         DMA_SPLIT_BUS_MODE                      4
+#define         BYTE_SWAP                               5
+#define         BUFFER_CONFIGURATION                    6
+#define                 BUFFER_CONFIGURATION_EPA512_EPB512      0
+#define                 BUFFER_CONFIGURATION_EPA1024_EPB512     1
+#define                 BUFFER_CONFIGURATION_EPA1024_EPB1024    2
+#define                 BUFFER_CONFIGURATION_EPA1024DB          3
+#define CHIPREV_LEGACY                  0x23
+#define                 NET2270_LEGACY_REV                      0x40
+#define LOCCTL1                         0x24
+#define         DMA_MODE                                0
+#define                 SLOW_DREQ                               0
+#define                 FAST_DREQ                               1
+#define                 BURST_MODE                              2
+#define         DMA_DACK_ENABLE                         2
+#define CHIPREV_2272                    0x25
+#define                 CHIPREV_NET2272_R1                      0x10
+#define                 CHIPREV_NET2272_R1A                     0x11
+/* USB Registers */
+#define USBCTL0                         0x18
+#define         IO_WAKEUP_ENABLE                        1
+#define         USB_DETECT_ENABLE                       3
+#define         USB_ROOT_PORT_WAKEUP_ENABLE             5
+#define USBCTL1                         0x19
+#define         VBUS_PIN                                0
+#define                 USB_FULL_SPEED                          1
+#define                 USB_HIGH_SPEED                          2
+#define         GENERATE_RESUME                         3
+#define         VIRTUAL_ENDPOINT_ENABLE                 4
+#define FRAME0                          0x1a
+#define FRAME1                          0x1b
+#define OURADDR                         0x30
+#define         FORCE_IMMEDIATE                         7
+#define USBDIAG                         0x31
+#define         FORCE_TRANSMIT_CRC_ERROR                0
+#define         PREVENT_TRANSMIT_BIT_STUFF              1
+#define         FORCE_RECEIVE_ERROR                     2
+#define         FAST_TIMES                              4
+#define USBTEST                         0x32
+#define         TEST_MODE_SELECT                        0
+#define                 NORMAL_OPERATION                        0
+#define                 TEST_J                                  1
+#define                 TEST_K                                  2
+#define                 TEST_SE0_NAK                            3
+#define                 TEST_PACKET                             4
+#define                 TEST_FORCE_ENABLE                       5
+#define XCVRDIAG                        0x33
+#define         FORCE_FULL_SPEED                        2
+#define         FORCE_HIGH_SPEED                        3
+#define         OPMODE                                  4
+#define                 NORMAL_OPERATION                        0
+#define                 NON_DRIVING                             1
+#define                 DISABLE_BITSTUFF_AND_NRZI_ENCODE        2
+#define         LINESTATE                               6
+#define                 SE0_STATE                               0
+#define                 J_STATE                                 1
+#define                 K_STATE                                 2
+#define                 SE1_STATE                               3
+#define VIRTOUT0                        0x34
+#define VIRTOUT1                        0x35
+#define VIRTIN0                         0x36
+#define VIRTIN1                         0x37
+#define SETUP0                          0x40
+#define SETUP1                          0x41
+#define SETUP2                          0x42
+#define SETUP3                          0x43
+#define SETUP4                          0x44
+#define SETUP5                          0x45
+#define SETUP6                          0x46
+#define SETUP7                          0x47
+/* Endpoint Registers (Paged via PAGESEL) */
+#define EP_DATA                         0x05
+#define EP_STAT0                        0x06
+#define         DATA_IN_TOKEN_INTERRUPT                 0
+#define         DATA_OUT_TOKEN_INTERRUPT                1
+#define         DATA_PACKET_TRANSMITTED_INTERRUPT       2
+#define         DATA_PACKET_RECEIVED_INTERRUPT          3
+#define         SHORT_PACKET_TRANSFERRED_INTERRUPT      4
+#define         NAK_OUT_PACKETS                         5
+#define         BUFFER_EMPTY                            6
+#define         BUFFER_FULL                             7
+#define EP_STAT1                        0x07
+#define         TIMEOUT                                 0
+#define         USB_OUT_ACK_SENT                        1
+#define         USB_OUT_NAK_SENT                        2
+#define         USB_IN_ACK_RCVD                         3
+#define         USB_IN_NAK_SENT                         4
+#define         USB_STALL_SENT                          5
+#define         LOCAL_OUT_ZLP                           6
+#define         BUFFER_FLUSH                            7
+#define EP_TRANSFER0                    0x08
+#define EP_TRANSFER1                    0x09
+#define EP_TRANSFER2                    0x0a
+#define EP_IRQENB                       0x0b
+#define         DATA_IN_TOKEN_INTERRUPT_ENABLE          0
+#define         DATA_OUT_TOKEN_INTERRUPT_ENABLE         1
+#define         DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE        2
+#define         DATA_PACKET_RECEIVED_INTERRUPT_ENABLE   3
+#define         SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE       4
+#define EP_AVAIL0                       0x0c
+#define EP_AVAIL1                       0x0d
+#define EP_RSPCLR                       0x0e
+#define EP_RSPSET                       0x0f
+#define         ENDPOINT_HALT                           0
+#define         ENDPOINT_TOGGLE                         1
+#define         NAK_OUT_PACKETS_MODE                    2
+#define         CONTROL_STATUS_PHASE_HANDSHAKE          3
+#define         INTERRUPT_MODE                          4
+#define         AUTOVALIDATE                            5
+#define         HIDE_STATUS_PHASE                       6
+#define         ALT_NAK_OUT_PACKETS                     7
+#define EP_MAXPKT0                      0x28
+#define EP_MAXPKT1                      0x29
+#define         ADDITIONAL_TRANSACTION_OPPORTUNITIES    3
+#define                 NONE_ADDITIONAL_TRANSACTION             0
+#define                 ONE_ADDITIONAL_TRANSACTION              1
+#define                 TWO_ADDITIONAL_TRANSACTION              2
+#define EP_CFG                          0x2a
+#define         ENDPOINT_NUMBER                         0
+#define         ENDPOINT_DIRECTION                      4
+#define         ENDPOINT_TYPE                           5
+#define         ENDPOINT_ENABLE                         7
+#define EP_HBW                          0x2b
+#define         HIGH_BANDWIDTH_OUT_TRANSACTION_PID      0
+#define                 DATA0_PID                               0
+#define                 DATA1_PID                               1
+#define                 DATA2_PID                               2
+#define                 MDATA_PID                               3
+#define EP_BUFF_STATES                  0x2c
+#define         BUFFER_A_STATE                          0
+#define         BUFFER_B_STATE                          2
+#define                 BUFF_FREE                               0
+#define                 BUFF_VALID                              1
+#define                 BUFF_LCL                                2
+#define                 BUFF_USB                                3
+
+/*---------------------------------------------------------------------------*/
+
+#define PCI_DEVICE_ID_RDK1      0x9054
+
+/* PCI-RDK EPLD Registers */
+#define RDK_EPLD_IO_REGISTER1           0x00000000
+#define         RDK_EPLD_USB_RESET                              0
+#define         RDK_EPLD_USB_POWERDOWN                          1
+#define         RDK_EPLD_USB_WAKEUP                             2
+#define         RDK_EPLD_USB_EOT                                3
+#define         RDK_EPLD_DPPULL                                 4
+#define RDK_EPLD_IO_REGISTER2           0x00000004
+#define         RDK_EPLD_BUSWIDTH                               0
+#define         RDK_EPLD_USER                                   2
+#define         RDK_EPLD_RESET_INTERRUPT_ENABLE                 3
+#define         RDK_EPLD_DMA_TIMEOUT_ENABLE                     4
+#define RDK_EPLD_STATUS_REGISTER        0x00000008
+#define         RDK_EPLD_USB_LRESET                             0
+#define RDK_EPLD_REVISION_REGISTER      0x0000000c
+
+/* PCI-RDK PLX 9054 Registers */
+#define INTCSR                          0x68
+#define         PCI_INTERRUPT_ENABLE                            8
+#define         LOCAL_INTERRUPT_INPUT_ENABLE                    11
+#define         LOCAL_INPUT_INTERRUPT_ACTIVE                    15
+#define         LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE            18
+#define         LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE            19
+#define         DMA_CHANNEL_0_INTERRUPT_ACTIVE                  21
+#define         DMA_CHANNEL_1_INTERRUPT_ACTIVE                  22
+#define CNTRL                           0x6C
+#define         RELOAD_CONFIGURATION_REGISTERS                  29
+#define         PCI_ADAPTER_SOFTWARE_RESET                      30
+#define DMAMODE0                        0x80
+#define         LOCAL_BUS_WIDTH                                 0
+#define         INTERNAL_WAIT_STATES                            2
+#define         TA_READY_INPUT_ENABLE                           6
+#define         LOCAL_BURST_ENABLE                              8
+#define         SCATTER_GATHER_MODE                             9
+#define         DONE_INTERRUPT_ENABLE                           10
+#define         LOCAL_ADDRESSING_MODE                           11
+#define         DEMAND_MODE                                     12
+#define         DMA_EOT_ENABLE                                  14
+#define         FAST_SLOW_TERMINATE_MODE_SELECT                 15
+#define         DMA_CHANNEL_INTERRUPT_SELECT                    17
+#define DMAPADR0                        0x84
+#define DMALADR0                        0x88
+#define DMASIZ0                         0x8c
+#define DMADPR0                         0x90
+#define         DESCRIPTOR_LOCATION                             0
+#define         END_OF_CHAIN                                    1
+#define         INTERRUPT_AFTER_TERMINAL_COUNT                  2
+#define         DIRECTION_OF_TRANSFER                           3
+#define DMACSR0                         0xa8
+#define         CHANNEL_ENABLE                                  0
+#define         CHANNEL_START                                   1
+#define         CHANNEL_ABORT                                   2
+#define         CHANNEL_CLEAR_INTERRUPT                         3
+#define         CHANNEL_DONE                                    4
+#define DMATHR                          0xb0
+#define LBRD1                           0xf8
+#define         MEMORY_SPACE_LOCAL_BUS_WIDTH                    0
+#define         W8_BIT                                          0
+#define         W16_BIT                                         1
+
+/* Special OR'ing of INTCSR bits */
+#define LOCAL_INTERRUPT_TEST \
+        ((1 << LOCAL_INPUT_INTERRUPT_ACTIVE) | \
+         (1 << LOCAL_INTERRUPT_INPUT_ENABLE))
+
+#define DMA_CHANNEL_0_TEST \
+        ((1 << DMA_CHANNEL_0_INTERRUPT_ACTIVE) | \
+         (1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE))
+
+#define DMA_CHANNEL_1_TEST \
+        ((1 << DMA_CHANNEL_1_INTERRUPT_ACTIVE) | \
+         (1 << LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE))
+
+/* EPLD Registers */
+#define RDK_EPLD_IO_REGISTER1                   0x00000000
+#define         RDK_EPLD_USB_RESET                      0
+#define         RDK_EPLD_USB_POWERDOWN                  1
+#define         RDK_EPLD_USB_WAKEUP                     2
+#define         RDK_EPLD_USB_EOT                        3
+#define         RDK_EPLD_DPPULL                         4
+#define RDK_EPLD_IO_REGISTER2                   0x00000004
+#define         RDK_EPLD_BUSWIDTH                       0
+#define         RDK_EPLD_USER                           2
+#define         RDK_EPLD_RESET_INTERRUPT_ENABLE         3
+#define         RDK_EPLD_DMA_TIMEOUT_ENABLE             4
+#define RDK_EPLD_STATUS_REGISTER                0x00000008
+#define RDK_EPLD_USB_LRESET                             0
+#define RDK_EPLD_REVISION_REGISTER              0x0000000c
+
+#define EPLD_IO_CONTROL_REGISTER                0x400
+#define         NET2272_RESET                           0
+#define         BUSWIDTH                                1
+#define         MPX_MODE                                3
+#define         USER                                    4
+#define         DMA_TIMEOUT_ENABLE                      5
+#define         DMA_CTL_DACK                            6
+#define         EPLD_DMA_ENABLE                         7
+#define EPLD_DMA_CONTROL_REGISTER               0x800
+#define         SPLIT_DMA_MODE                          0
+#define         SPLIT_DMA_DIRECTION                     1
+#define         SPLIT_DMA_ENABLE                        2
+#define         SPLIT_DMA_INTERRUPT_ENABLE              3
+#define         SPLIT_DMA_INTERRUPT                     4
+#define         EPLD_DMA_MODE                           5
+#define         EPLD_DMA_CONTROLLER_ENABLE              7
+#define SPLIT_DMA_ADDRESS_LOW                   0xc00
+#define SPLIT_DMA_ADDRESS_HIGH                  0x1000
+#define SPLIT_DMA_BYTE_COUNT_LOW                0x1400
+#define SPLIT_DMA_BYTE_COUNT_HIGH               0x1800
+#define EPLD_REVISION_REGISTER                  0x1c00
+#define SPLIT_DMA_RAM                           0x4000
+#define DMA_RAM_SIZE                            0x1000
+
+/*---------------------------------------------------------------------------*/
+
+#define PCI_DEVICE_ID_RDK2      0x3272
+
+/* PCI-RDK version 2 registers */
+
+/* Main Control Registers */
+
+#define RDK2_IRQENB                     0x00
+#define RDK2_IRQSTAT                    0x04
+#define         PB7                             23
+#define         PB6                             22
+#define         PB5                             21
+#define         PB4                             20
+#define         PB3                             19
+#define         PB2                             18
+#define         PB1                             17
+#define         PB0                             16
+#define         GP3                             23
+#define         GP2                             23
+#define         GP1                             23
+#define         GP0                             23
+#define         DMA_RETRY_ABORT                 6
+#define         DMA_PAUSE_DONE                  5
+#define         DMA_ABORT_DONE                  4
+#define         DMA_OUT_FIFO_TRANSFER_DONE      3
+#define         DMA_LOCAL_DONE                  2
+#define         DMA_PCI_DONE                    1
+#define         NET2272_PCI_IRQ                 0
+
+#define RDK2_LOCCTLRDK                  0x08
+#define         CHIP_RESET                      3
+#define         SPLIT_DMA                       2
+#define         MULTIPLEX_MODE                  1
+#define         BUS_WIDTH                       0
+
+#define RDK2_GPIOCTL                    0x10
+#define         GP3_OUT_ENABLE                                  7
+#define         GP2_OUT_ENABLE                                  6
+#define         GP1_OUT_ENABLE                                  5
+#define         GP0_OUT_ENABLE                                  4
+#define         GP3_DATA                                        3
+#define         GP2_DATA                                        2
+#define         GP1_DATA                                        1
+#define         GP0_DATA                                        0
+
+#define RDK2_LEDSW                      0x14
+#define         LED3                            27
+#define         LED2                            26
+#define         LED1                            25
+#define         LED0                            24
+#define         PBUTTON                         16
+#define         DIPSW                           0
+
+#define RDK2_DIAG                       0x18
+#define         RDK2_FAST_TIMES                         2
+#define         FORCE_PCI_SERR                          1
+#define         FORCE_PCI_INT                           0
+#define RDK2_FPGAREV                    0x1C
+
+/* Dma Control registers */
+#define RDK2_DMACTL                     0x80
+#define         ADDR_HOLD                               24
+#define         RETRY_COUNT                             16      /* 23:16 */
+#define         FIFO_THRESHOLD                          11      /* 15:11 */
+#define         MEM_WRITE_INVALIDATE                    10
+#define         READ_MULTIPLE                           9
+#define         READ_LINE                               8
+#define         RDK2_DMA_MODE                           6       /* 7:6 */
+#define         CONTROL_DACK                            5
+#define         EOT_ENABLE                              4
+#define         EOT_POLARITY                            3
+#define         DACK_POLARITY                           2
+#define         DREQ_POLARITY                           1
+#define         DMA_ENABLE                              0
+
+#define RDK2_DMASTAT                    0x84
+#define         GATHER_COUNT                            12      /* 14:12 */
+#define         FIFO_COUNT                              6       /* 11:6 */
+#define         FIFO_FLUSH                              5
+#define         FIFO_TRANSFER                           4
+#define         PAUSE_DONE                              3
+#define         ABORT_DONE                              2
+#define         DMA_ABORT                               1
+#define         DMA_START                               0
+
+#define RDK2_DMAPCICOUNT                0x88
+#define         DMA_DIRECTION                           31
+#define         DMA_PCI_BYTE_COUNT                      0       /* 0:23 */
+
+#define RDK2_DMALOCCOUNT                0x8C    /* 0:23 dma local byte count */
+
+#define RDK2_DMAADDR                    0x90    /* 2:31 PCI bus starting address */
+
+/*---------------------------------------------------------------------------*/
+
+#define REG_INDEXED_THRESHOLD   (1 << 5)
+
+/* DRIVER DATA STRUCTURES and UTILITIES */
+struct net2272_ep {
+        struct usb_ep ep;
+        struct net2272 *dev;
+        unsigned long irqs;
+
+        /* analogous to a host-side qh */
+        struct list_head queue;
+        const struct usb_endpoint_descriptor *desc;
+        unsigned num:8,
+                 fifo_size:12,
+                 stopped:1,
+                 wedged:1,
+                 is_in:1,
+                 is_iso:1,
+                 dma:1,
+                 not_empty:1;
+};
+
+struct net2272 {
+        /* each device provides one gadget, several endpoints */
+        struct usb_gadget gadget;
+        struct device *dev;
+        unsigned short dev_id;
+
+        spinlock_t lock;
+        struct net2272_ep ep[4];
+        struct usb_gadget_driver *driver;
+        unsigned protocol_stall:1,
+                 softconnect:1,
+                 is_selfpowered:1,
+                 wakeup:1,
+                 dma_eot_polarity:1,
+                 dma_dack_polarity:1,
+                 dma_dreq_polarity:1,
+                 dma_busy:1;
+        u16 chiprev;
+        u8 pagesel;
+
+        unsigned int irq;
+        unsigned short fifo_mode;
+
+        unsigned int base_shift;
+        u16 __iomem *base_addr;
+        union {
+#ifdef CONFIG_PCI
+                struct {
+                        void __iomem *plx9054_base_addr;
+                        void __iomem *epld_base_addr;
+                } rdk1;
+                struct {
+                        /* Bar0, Bar1 is base_addr both mem-mapped */
+                        void __iomem *fpga_base_addr;
+                } rdk2;
+#endif
+        };
+};
+
+static void __iomem *
+net2272_reg_addr(struct net2272 *dev, unsigned int reg)
+{
+        return dev->base_addr + (reg << dev->base_shift);
+}
+
+static void
+net2272_write(struct net2272 *dev, unsigned int reg, u8 value)
+{
+        if (reg >= REG_INDEXED_THRESHOLD) {
+                /*
+                 * Indexed register; use REGADDRPTR/REGDATA
+                 *  - Save and restore REGADDRPTR. This prevents REGADDRPTR from
+                 *    changes between other code sections, but it is time consuming.
+                 *  - Performance tips: either do not save and restore REGADDRPTR (if it
+                 *    is safe) or do save/restore operations only in critical sections.
+                u8 tmp = readb(dev->base_addr + REGADDRPTR);
+                 */
+                writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR));
+                writeb(value, net2272_reg_addr(dev, REGDATA));
+                /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */
+        } else
+                writeb(value, net2272_reg_addr(dev, reg));
+}
+
+static u8
+net2272_read(struct net2272 *dev, unsigned int reg)
+{
+        u8 ret;
+
+        if (reg >= REG_INDEXED_THRESHOLD) {
+                /*
+                 * Indexed register; use REGADDRPTR/REGDATA
+                 *  - Save and restore REGADDRPTR. This prevents REGADDRPTR from
+                 *    changes between other code sections, but it is time consuming.
+                 *  - Performance tips: either do not save and restore REGADDRPTR (if it
+                 *    is safe) or do save/restore operations only in critical sections.
+                u8 tmp = readb(dev->base_addr + REGADDRPTR);
+                 */
+                writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR));
+                ret = readb(net2272_reg_addr(dev, REGDATA));
+                /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */
+        } else
+                ret = readb(net2272_reg_addr(dev, reg));
+
+        return ret;
+}
+
+static void
+net2272_ep_write(struct net2272_ep *ep, unsigned int reg, u8 value)
+{
+        struct net2272 *dev = ep->dev;
+
+        if (dev->pagesel != ep->num) {
+                net2272_write(dev, PAGESEL, ep->num);
+                dev->pagesel = ep->num;
+        }
+        net2272_write(dev, reg, value);
+}
+
+static u8
+net2272_ep_read(struct net2272_ep *ep, unsigned int reg)
+{
+        struct net2272 *dev = ep->dev;
+
+        if (dev->pagesel != ep->num) {
+                net2272_write(dev, PAGESEL, ep->num);
+                dev->pagesel = ep->num;
+        }
+        return net2272_read(dev, reg);
+}
+
+static void allow_status(struct net2272_ep *ep)
+{
+        /* ep0 only */
+        net2272_ep_write(ep, EP_RSPCLR,
+                (1 << CONTROL_STATUS_PHASE_HANDSHAKE) |
+                (1 << ALT_NAK_OUT_PACKETS) |
+                (1 << NAK_OUT_PACKETS_MODE));
+        ep->stopped = 1;
+}
+
+static void set_halt(struct net2272_ep *ep)
+{
+        /* ep0 and bulk/intr endpoints */
+        net2272_ep_write(ep, EP_RSPCLR, 1 << CONTROL_STATUS_PHASE_HANDSHAKE);
+        net2272_ep_write(ep, EP_RSPSET, 1 << ENDPOINT_HALT);
+}
+
+static void clear_halt(struct net2272_ep *ep)
+{
+        /* ep0 and bulk/intr endpoints */
+        net2272_ep_write(ep, EP_RSPCLR,
+                (1 << ENDPOINT_HALT) | (1 << ENDPOINT_TOGGLE));
+}
+
+/* count (<= 4) bytes in the next fifo write will be valid */
+static void set_fifo_bytecount(struct net2272_ep *ep, unsigned count)
+{
+        /* net2272_ep_write will truncate to u8 for us */
+        net2272_ep_write(ep, EP_TRANSFER2, count >> 16);
+        net2272_ep_write(ep, EP_TRANSFER1, count >> 8);
+        net2272_ep_write(ep, EP_TRANSFER0, count);
+}
+
+struct net2272_request {
+        struct usb_request req;
+        struct list_head queue;
+        unsigned mapped:1,
+                 valid:1;
+};
+
+#endif
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 476d88e1ae97..3dd40b4e675c 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -1410,11 +1410,17 @@ static int net2280_pullup(struct usb_gadget *_gadget, int is_on)
         return 0;
 }
 
+static int net2280_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int net2280_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops net2280_ops = {
         .get_frame      = net2280_get_frame,
         .wakeup         = net2280_wakeup,
         .set_selfpowered = net2280_set_selfpowered,
         .pullup         = net2280_pullup,
+        .start          = net2280_start,
+        .stop           = net2280_stop,
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1738,62 +1744,6 @@ static void set_fifo_mode (struct net2280 *dev, int mode)
         list_add_tail (&dev->ep [6].ep.ep_list, &dev->gadget.ep_list);
 }
 
-/* just declare this in any driver that really need it */
-extern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode);
-
-/**
- * net2280_set_fifo_mode - change allocation of fifo buffers
- * @gadget: access to the net2280 device that will be updated
- * @mode: 0 for default, four 1kB buffers (ep-a through ep-d);
- *      1 for two 2kB buffers (ep-a and ep-b only);
- *      2 for one 2kB buffer (ep-a) and two 1kB ones (ep-b, ep-c).
- *
- * returns zero on success, else negative errno.  when this succeeds,
- * the contents of gadget->ep_list may have changed.
- *
- * you may only call this function when endpoints a-d are all disabled.
- * use it whenever extra hardware buffering can help performance, such
- * as before enabling "high bandwidth" interrupt endpoints that use
- * maxpacket bigger than 512 (when double buffering would otherwise
- * be unavailable).
- */
-int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode)
-{
-        int                     i;
-        struct net2280          *dev;
-        int                     status = 0;
-        unsigned long           flags;
-
-        if (!gadget)
-                return -ENODEV;
-        dev = container_of (gadget, struct net2280, gadget);
-
-        spin_lock_irqsave (&dev->lock, flags);
-
-        for (i = 1; i <= 4; i++)
-                if (dev->ep [i].desc) {
-                        status = -EINVAL;
-                        break;
-                }
-        if (mode < 0 || mode > 2)
-                status = -EINVAL;
-        if (status == 0)
-                set_fifo_mode (dev, mode);
-        spin_unlock_irqrestore (&dev->lock, flags);
-
-        if (status == 0) {
-                if (mode == 1)
-                        DEBUG (dev, "fifo:  ep-a 2K, ep-b 2K\n");
-                else if (mode == 2)
-                        DEBUG (dev, "fifo:  ep-a 2K, ep-b 1K, ep-c 1K\n");
-                /* else all are 1K */
-        }
-        return status;
-}
-EXPORT_SYMBOL (net2280_set_fifo_mode);
-
-/*-------------------------------------------------------------------------*/
-
 /* keeping it simple:
  * - one bus driver, initted first;
  * - one function driver, initted second
@@ -1930,7 +1880,7 @@ static void ep0_start (struct net2280 *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int net2280_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct net2280          *dev = the_controller;
@@ -1994,7 +1944,6 @@ err_unbind:
         dev->driver = NULL;
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver)
@@ -2022,7 +1971,7 @@ stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver)
         usb_reinit (dev);
 }
 
-int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
+static int net2280_stop(struct usb_gadget_driver *driver)
 {
         struct net2280  *dev = the_controller;
         unsigned long   flags;
@@ -2049,8 +1998,6 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
         DEBUG (dev, "unregistered driver '%s'\n", driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL (usb_gadget_unregister_driver);
-
 
 /*-------------------------------------------------------------------------*/
 
@@ -2732,6 +2679,8 @@ static void net2280_remove (struct pci_dev *pdev)
 {
         struct net2280          *dev = pci_get_drvdata (pdev);
 
+        usb_del_gadget_udc(&dev->gadget);
+
         BUG_ON(dev->driver);
 
         /* then clean up the resources we allocated during probe() */
@@ -2916,6 +2865,9 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
         retval = device_create_file (&pdev->dev, &dev_attr_registers);
         if (retval) goto done;
 
+        retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+        if (retval)
+                goto done;
         return 0;
 
 done:
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
index 55ca63ad3506..c7fb7723c014 100644
--- a/drivers/usb/gadget/nokia.c
+++ b/drivers/usb/gadget/nokia.c
@@ -241,6 +241,7 @@ static struct usb_composite_driver nokia_driver = {
         .name           = "g_nokia",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = __exit_p(nokia_unbind),
 };
 
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 82fd24935332..740c7daed279 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -1375,6 +1375,10 @@ static int omap_pullup(struct usb_gadget *gadget, int is_on)
         return 0;
 }
 
+static int omap_udc_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int omap_udc_stop(struct usb_gadget_driver *driver);
+
 static struct usb_gadget_ops omap_gadget_ops = {
         .get_frame              = omap_get_frame,
         .wakeup                 = omap_wakeup,
@@ -1382,6 +1386,8 @@ static struct usb_gadget_ops omap_gadget_ops = {
         .vbus_session           = omap_vbus_session,
         .vbus_draw              = omap_vbus_draw,
         .pullup                 = omap_pullup,
+        .start                  = omap_udc_start,
+        .stop                   = omap_udc_stop,
 };
 
 /*-------------------------------------------------------------------------*/
@@ -2102,7 +2108,7 @@ static inline int machine_without_vbus_sense(void)
                 );
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int omap_udc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         int             status = -ENODEV;
@@ -2186,9 +2192,8 @@ done:
                 omap_udc_enable_clock(0);
         return status;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
+static int omap_udc_stop(struct usb_gadget_driver *driver)
 {
         unsigned long   flags;
         int             status = -ENODEV;
@@ -2222,8 +2227,6 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
         DBG("unregistered driver '%s'\n", driver->driver.name);
         return status;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
 
 /*-------------------------------------------------------------------------*/
 
@@ -2991,9 +2994,16 @@ known:
 
         create_proc_file();
         status = device_add(&udc->gadget.dev);
+        if (status)
+                goto cleanup4;
+
+        status = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
         if (!status)
                 return status;
         /* If fail, fall through */
+cleanup4:
+        remove_proc_file();
+
 #ifdef  USE_ISO
 cleanup3:
         free_irq(pdev->resource[2].start, udc);
@@ -3029,6 +3039,8 @@ static int __exit omap_udc_remove(struct platform_device *pdev)
 
         if (!udc)
                 return -ENODEV;
+
+        usb_del_gadget_udc(&udc->gadget);
         if (udc->driver)
                 return -EBUSY;
 
diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c
index 68dbcc3e4cc2..f96615ab6b77 100644
--- a/drivers/usb/gadget/pch_udc.c
+++ b/drivers/usb/gadget/pch_udc.c
@@ -1176,6 +1176,9 @@ static int pch_udc_pcd_vbus_draw(struct usb_gadget *gadget, unsigned int mA)
         return -EOPNOTSUPP;
 }
 
+static int pch_udc_start(struct usb_gadget_driver *driver,
+        int (*bind)(struct usb_gadget *));
+static int pch_udc_stop(struct usb_gadget_driver *driver);
 static const struct usb_gadget_ops pch_udc_ops = {
         .get_frame = pch_udc_pcd_get_frame,
         .wakeup = pch_udc_pcd_wakeup,
@@ -1183,6 +1186,8 @@ static const struct usb_gadget_ops pch_udc_ops = {
         .pullup = pch_udc_pcd_pullup,
         .vbus_session = pch_udc_pcd_vbus_session,
         .vbus_draw = pch_udc_pcd_vbus_draw,
+        .start  = pch_udc_start,
+        .stop   = pch_udc_stop,
 };
 
 /**
@@ -2690,7 +2695,7 @@ static int init_dma_pools(struct pch_udc_dev *dev)
         return 0;
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int pch_udc_start(struct usb_gadget_driver *driver,
         int (*bind)(struct usb_gadget *))
 {
         struct pch_udc_dev      *dev = pch_udc;
@@ -2733,9 +2738,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
         dev->connected = 1;
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int pch_udc_stop(struct usb_gadget_driver *driver)
 {
         struct pch_udc_dev      *dev = pch_udc;
 
@@ -2761,7 +2765,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         pch_udc_set_disconnect(dev);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 static void pch_udc_shutdown(struct pci_dev *pdev)
 {
@@ -2778,6 +2781,8 @@ static void pch_udc_remove(struct pci_dev *pdev)
 {
         struct pch_udc_dev      *dev = pci_get_drvdata(pdev);
 
+        usb_del_gadget_udc(&dev->gadget);
+
         /* gadget driver must not be registered */
         if (dev->driver)
                 dev_err(&pdev->dev,
@@ -2953,6 +2958,9 @@ static int pch_udc_probe(struct pci_dev *pdev,
 
         /* Put the device in disconnected state till a driver is bound */
         pch_udc_set_disconnect(dev);
+        retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+        if (retval)
+                goto finished;
         return 0;
 
 finished:
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 978e6a101bf2..a341dde6f9c3 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -89,8 +89,7 @@ struct printer_dev {
         u8                      config;
         s8                      interface;
         struct usb_ep           *in_ep, *out_ep;
-        const struct usb_endpoint_descriptor
-                                *in, *out;
+
         struct list_head        rx_reqs;        /* List of free RX structs */
         struct list_head        rx_reqs_active; /* List of Active RX xfers */
         struct list_head        rx_buffers;     /* List of completed xfers */
@@ -898,19 +897,20 @@ set_printer_interface(struct printer_dev *dev)
 {
         int                     result = 0;
 
-        dev->in = ep_desc(dev->gadget, &hs_ep_in_desc, &fs_ep_in_desc);
+        dev->in_ep->desc = ep_desc(dev->gadget, &hs_ep_in_desc, &fs_ep_in_desc);
         dev->in_ep->driver_data = dev;
 
-        dev->out = ep_desc(dev->gadget, &hs_ep_out_desc, &fs_ep_out_desc);
+        dev->out_ep->desc = ep_desc(dev->gadget, &hs_ep_out_desc,
+                                    &fs_ep_out_desc);
         dev->out_ep->driver_data = dev;
 
-        result = usb_ep_enable(dev->in_ep, dev->in);
+        result = usb_ep_enable(dev->in_ep);
         if (result != 0) {
                 DBG(dev, "enable %s --> %d\n", dev->in_ep->name, result);
                 goto done;
         }
 
-        result = usb_ep_enable(dev->out_ep, dev->out);
+        result = usb_ep_enable(dev->out_ep);
         if (result != 0) {
                 DBG(dev, "enable %s --> %d\n", dev->in_ep->name, result);
                 goto done;
@@ -921,8 +921,8 @@ done:
         if (result != 0) {
                 (void) usb_ep_disable(dev->in_ep);
                 (void) usb_ep_disable(dev->out_ep);
-                dev->in = NULL;
-                dev->out = NULL;
+                dev->in_ep->desc = NULL;
+                dev->out_ep->desc = NULL;
         }
 
         /* caller is responsible for cleanup on error */
@@ -936,12 +936,14 @@ static void printer_reset_interface(struct printer_dev *dev)
 
         DBG(dev, "%s\n", __func__);
 
-        if (dev->in)
+        if (dev->in_ep->desc)
                 usb_ep_disable(dev->in_ep);
 
-        if (dev->out)
+        if (dev->out_ep->desc)
                 usb_ep_disable(dev->out_ep);
 
+        dev->in_ep->desc = NULL;
+        dev->out_ep->desc = NULL;
         dev->interface = -1;
 }
 
@@ -1107,9 +1109,9 @@ static void printer_soft_reset(struct printer_dev *dev)
                 list_add(&req->list, &dev->tx_reqs);
         }
 
-        if (usb_ep_enable(dev->in_ep, dev->in))
+        if (usb_ep_enable(dev->in_ep))
                 DBG(dev, "Failed to enable USB in_ep\n");
-        if (usb_ep_enable(dev->out_ep, dev->out))
+        if (usb_ep_enable(dev->out_ep))
                 DBG(dev, "Failed to enable USB out_ep\n");
 
         wake_up_interruptible(&dev->rx_wait);
@@ -1149,6 +1151,8 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                         switch (wValue >> 8) {
 
                         case USB_DT_DEVICE:
+                                device_desc.bMaxPacketSize0 =
+                                        gadget->ep0->maxpacket;
                                 value = min(wLength, (u16) sizeof device_desc);
                                 memcpy(req->buf, &device_desc, value);
                                 break;
@@ -1156,6 +1160,12 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
                         case USB_DT_DEVICE_QUALIFIER:
                                 if (!gadget->is_dualspeed)
                                         break;
+                                /*
+                                 * assumes ep0 uses the same value for both
+                                 * speeds
+                                 */
+                                dev_qualifier.bMaxPacketSize0 =
+                                        gadget->ep0->maxpacket;
                                 value = min(wLength,
                                                 (u16) sizeof dev_qualifier);
                                 memcpy(req->buf, &dev_qualifier, value);
@@ -1451,15 +1461,11 @@ autoconf_fail:
         out_ep->driver_data = out_ep;   /* claim */
 
 #ifdef  CONFIG_USB_GADGET_DUALSPEED
-        /* assumes ep0 uses the same value for both speeds ... */
-        dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
-
-        /* and that all endpoints are dual-speed */
+        /* assumes that all endpoints are dual-speed */
         hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress;
         hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress;
 #endif  /* DUALSPEED */
 
-        device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
         usb_gadget_set_selfpowered(gadget);
 
         if (gadget->is_otg) {
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index 774545494cf2..e4e59b4de25d 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -1011,12 +1011,18 @@ static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
         return -EOPNOTSUPP;
 }
 
+static int pxa25x_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int pxa25x_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops pxa25x_udc_ops = {
         .get_frame      = pxa25x_udc_get_frame,
         .wakeup         = pxa25x_udc_wakeup,
         .vbus_session   = pxa25x_udc_vbus_session,
         .pullup         = pxa25x_udc_pullup,
         .vbus_draw      = pxa25x_udc_vbus_draw,
+        .start          = pxa25x_start,
+        .stop           = pxa25x_stop,
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1263,7 +1269,7 @@ static void udc_enable (struct pxa25x_udc *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int pxa25x_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct pxa25x_udc       *dev = the_controller;
@@ -1322,7 +1328,6 @@ fail:
 bind_fail:
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
@@ -1351,7 +1356,7 @@ stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
         udc_reinit(dev);
 }
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int pxa25x_stop(struct usb_gadget_driver *driver)
 {
         struct pxa25x_udc       *dev = the_controller;
 
@@ -1379,8 +1384,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         dump_state(dev);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
 
 /*-------------------------------------------------------------------------*/
 
@@ -2231,8 +2234,11 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
 #endif
         create_debug_files(dev);
 
-        return 0;
+        retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+        if (!retval)
+                return retval;
 
+        remove_debug_files(dev);
 #ifdef  CONFIG_ARCH_LUBBOCK
 lubbock_fail0:
         free_irq(LUBBOCK_USB_DISC_IRQ, dev);
@@ -2261,6 +2267,7 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev)
 {
         struct pxa25x_udc *dev = platform_get_drvdata(pdev);
 
+        usb_del_gadget_udc(&dev->gadget);
         if (dev->driver)
                 return -EBUSY;
 
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 57607696735c..85b68c75dc9d 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -1680,12 +1680,18 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
         return -EOPNOTSUPP;
 }
 
+static int pxa27x_udc_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int pxa27x_udc_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops pxa_udc_ops = {
         .get_frame      = pxa_udc_get_frame,
         .wakeup         = pxa_udc_wakeup,
         .pullup         = pxa_udc_pullup,
         .vbus_session   = pxa_udc_vbus_session,
         .vbus_draw      = pxa_udc_vbus_draw,
+        .start          = pxa27x_udc_start,
+        .stop           = pxa27x_udc_stop,
 };
 
 /**
@@ -1791,7 +1797,7 @@ static void udc_enable(struct pxa_udc *udc)
 }
 
 /**
- * usb_gadget_probe_driver - Register gadget driver
+ * pxa27x_start - Register gadget driver
  * @driver: gadget driver
  * @bind: bind function
  *
@@ -1805,7 +1811,7 @@ static void udc_enable(struct pxa_udc *udc)
  *
  * Returns 0 if no error, -EINVAL, -ENODEV, -EBUSY otherwise
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int pxa27x_udc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct pxa_udc *udc = the_controller;
@@ -1860,8 +1866,6 @@ add_fail:
         udc->gadget.dev.driver = NULL;
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
-
 
 /**
  * stop_activity - Stops udc endpoints
@@ -1888,12 +1892,12 @@ static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver)
 }
 
 /**
- * usb_gadget_unregister_driver - Unregister the gadget driver
+ * pxa27x_udc_stop - Unregister the gadget driver
  * @driver: gadget driver
  *
  * Returns 0 if no error, -ENODEV, -EINVAL otherwise
  */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int pxa27x_udc_stop(struct usb_gadget_driver *driver)
 {
         struct pxa_udc *udc = the_controller;
 
@@ -1917,7 +1921,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
                 return otg_set_peripheral(udc->transceiver, NULL);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /**
  * handle_ep0_ctrl_req - handle control endpoint control request
@@ -2516,9 +2519,14 @@ static int __init pxa_udc_probe(struct platform_device *pdev)
                         driver_name, IRQ_USB, retval);
                 goto err_irq;
         }
+        retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
+        if (retval)
+                goto err_add_udc;
 
         pxa_init_debugfs(udc);
         return 0;
+err_add_udc:
+        free_irq(udc->irq, udc);
 err_irq:
         iounmap(udc->regs);
 err_map:
@@ -2537,6 +2545,7 @@ static int __exit pxa_udc_remove(struct platform_device *_dev)
         struct pxa_udc *udc = platform_get_drvdata(_dev);
         int gpio = udc->mach->gpio_pullup;
 
+        usb_del_gadget_udc(&udc->gadget);
         usb_gadget_unregister_driver(udc->driver);
         free_irq(udc->irq, udc);
         pxa_cleanup_debugfs(udc);
diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c
index 6dcc1f68fa60..50991e5bd5e8 100644
--- a/drivers/usb/gadget/r8a66597-udc.c
+++ b/drivers/usb/gadget/r8a66597-udc.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2006-2009 Renesas Solutions Corp.
  *
- * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  *
  * 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
@@ -576,7 +576,11 @@ static void init_controller(struct r8a66597 *r8a66597)
         u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
 
         if (r8a66597->pdata->on_chip) {
-                r8a66597_bset(r8a66597, 0x04, SYSCFG1);
+                if (r8a66597->pdata->buswait)
+                        r8a66597_write(r8a66597, r8a66597->pdata->buswait,
+                                        SYSCFG1);
+                else
+                        r8a66597_write(r8a66597, 0x0f, SYSCFG1);
                 r8a66597_bset(r8a66597, HSE, SYSCFG0);
 
                 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
@@ -618,6 +622,7 @@ static void disable_controller(struct r8a66597 *r8a66597)
 {
         if (r8a66597->pdata->on_chip) {
                 r8a66597_bset(r8a66597, SCKE, SYSCFG0);
+                r8a66597_bclr(r8a66597, UTST, TESTMODE);
 
                 /* disable interrupts */
                 r8a66597_write(r8a66597, 0, INTENB0);
@@ -635,6 +640,7 @@ static void disable_controller(struct r8a66597 *r8a66597)
                 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 
         } else {
+                r8a66597_bclr(r8a66597, UTST, TESTMODE);
                 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
                 udelay(1);
                 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
@@ -999,10 +1005,29 @@ static void clear_feature(struct r8a66597 *r8a66597,
 
 static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
 {
+        u16 tmp;
+        int timeout = 3000;
 
         switch (ctrl->bRequestType & USB_RECIP_MASK) {
         case USB_RECIP_DEVICE:
-                control_end(r8a66597, 1);
+                switch (le16_to_cpu(ctrl->wValue)) {
+                case USB_DEVICE_TEST_MODE:
+                        control_end(r8a66597, 1);
+                        /* Wait for the completion of status stage */
+                        do {
+                                tmp = r8a66597_read(r8a66597, INTSTS0) & CTSQ;
+                                udelay(1);
+                        } while (tmp != CS_IDST || timeout-- > 0);
+
+                        if (tmp == CS_IDST)
+                                r8a66597_bset(r8a66597,
+                                              le16_to_cpu(ctrl->wIndex >> 8),
+                                              TESTMODE);
+                        break;
+                default:
+                        pipe_stall(r8a66597, 0);
+                        break;
+                }
                 break;
         case USB_RECIP_INTERFACE:
                 control_end(r8a66597, 1);
@@ -1410,7 +1435,7 @@ static struct usb_ep_ops r8a66597_ep_ops = {
 /*-------------------------------------------------------------------------*/
 static struct r8a66597 *the_controller;
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int r8a66597_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct r8a66597 *r8a66597 = the_controller;
@@ -1444,6 +1469,7 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
                 goto error;
         }
 
+        init_controller(r8a66597);
         r8a66597_bset(r8a66597, VBSE, INTENB0);
         if (r8a66597_read(r8a66597, INTSTS0) & VBSTS) {
                 r8a66597_start_xclock(r8a66597);
@@ -1462,9 +1488,8 @@ error:
 
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int r8a66597_stop(struct usb_gadget_driver *driver)
 {
         struct r8a66597 *r8a66597 = the_controller;
         unsigned long flags;
@@ -1475,20 +1500,16 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         spin_lock_irqsave(&r8a66597->lock, flags);
         if (r8a66597->gadget.speed != USB_SPEED_UNKNOWN)
                 r8a66597_usb_disconnect(r8a66597);
-        spin_unlock_irqrestore(&r8a66597->lock, flags);
-
         r8a66597_bclr(r8a66597, VBSE, INTENB0);
+        disable_controller(r8a66597);
+        spin_unlock_irqrestore(&r8a66597->lock, flags);
 
         driver->unbind(&r8a66597->gadget);
 
-        init_controller(r8a66597);
-        disable_controller(r8a66597);
-
         device_del(&r8a66597->gadget.dev);
         r8a66597->driver = NULL;
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*-------------------------------------------------------------------------*/
 static int r8a66597_get_frame(struct usb_gadget *_gadget)
@@ -1497,14 +1518,33 @@ static int r8a66597_get_frame(struct usb_gadget *_gadget)
         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
 }
 
+static int r8a66597_pullup(struct usb_gadget *gadget, int is_on)
+{
+        struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget);
+        unsigned long flags;
+
+        spin_lock_irqsave(&r8a66597->lock, flags);
+        if (is_on)
+                r8a66597_bset(r8a66597, DPRPU, SYSCFG0);
+        else
+                r8a66597_bclr(r8a66597, DPRPU, SYSCFG0);
+        spin_unlock_irqrestore(&r8a66597->lock, flags);
+
+        return 0;
+}
+
 static struct usb_gadget_ops r8a66597_gadget_ops = {
         .get_frame              = r8a66597_get_frame,
+        .start                  = r8a66597_start,
+        .stop                   = r8a66597_stop,
+        .pullup                 = r8a66597_pullup,
 };
 
 static int __exit r8a66597_remove(struct platform_device *pdev)
 {
         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
 
+        usb_del_gadget_udc(&r8a66597->gadget);
         del_timer_sync(&r8a66597->timer);
         iounmap(r8a66597->reg);
         free_irq(platform_get_irq(pdev, 0), r8a66597);
@@ -1645,11 +1685,15 @@ static int __init r8a66597_probe(struct platform_device *pdev)
                 goto clean_up3;
         r8a66597->ep0_req->complete = nop_completion;
 
-        init_controller(r8a66597);
+        ret = usb_add_gadget_udc(&pdev->dev, &r8a66597->gadget);
+        if (ret)
+                goto err_add_udc;
 
         dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
         return 0;
 
+err_add_udc:
+        r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req);
 clean_up3:
         free_irq(irq, r8a66597);
 clean_up2:
@@ -1679,6 +1723,7 @@ static struct platform_driver r8a66597_driver = {
                 .name = (char *) udc_name,
         },
 };
+MODULE_ALIAS("platform:r8a66597_udc");
 
 static int __init r8a66597_udc_init(void)
 {
diff --git a/drivers/usb/gadget/r8a66597-udc.h b/drivers/usb/gadget/r8a66597-udc.h
index 5fc22e09a0f1..503f766c23a7 100644
--- a/drivers/usb/gadget/r8a66597-udc.h
+++ b/drivers/usb/gadget/r8a66597-udc.h
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2007-2009 Renesas Solutions Corp.
  *
- * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  *
  * 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
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 0dfee282878a..8bdee67ce09a 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -2574,7 +2574,7 @@ static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg)
         return 0;
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int s3c_hsotg_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct s3c_hsotg *hsotg = our_hsotg;
@@ -2745,9 +2745,8 @@ err:
         hsotg->gadget.dev.driver = NULL;
         return ret;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int s3c_hsotg_stop(struct usb_gadget_driver *driver)
 {
         struct s3c_hsotg *hsotg = our_hsotg;
         int ep;
@@ -2775,7 +2774,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget)
 {
@@ -2784,6 +2782,8 @@ static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget)
 
 static struct usb_gadget_ops s3c_hsotg_gadget_ops = {
         .get_frame      = s3c_hsotg_gadget_getframe,
+        .start          = s3c_hsotg_start,
+        .stop           = s3c_hsotg_stop,
 };
 
 /**
@@ -3403,6 +3403,10 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev)
         for (epnum = 0; epnum < S3C_HSOTG_EPS; epnum++)
                 s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum);
 
+        ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget);
+        if (ret)
+                goto err_add_udc;
+
         s3c_hsotg_create_debug(hsotg);
 
         s3c_hsotg_dump(hsotg);
@@ -3410,6 +3414,11 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev)
         our_hsotg = hsotg;
         return 0;
 
+err_add_udc:
+        s3c_hsotg_gate(pdev, false);
+        clk_disable(hsotg->clk);
+        clk_put(hsotg->clk);
+
 err_regs:
         iounmap(hsotg->regs);
 
@@ -3427,6 +3436,8 @@ static int __devexit s3c_hsotg_remove(struct platform_device *pdev)
 {
         struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
 
+        usb_del_gadget_udc(&hsotg->gadget);
+
         s3c_hsotg_delete_debug(hsotg);
 
         usb_gadget_unregister_driver(hsotg->driver);
diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index d5e3e1e58626..3fa717c5f4bc 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -1133,7 +1133,7 @@ static irqreturn_t s3c_hsudc_irq(int irq, void *_dev)
         return IRQ_HANDLED;
 }
 
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int s3c_hsudc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct s3c_hsudc *hsudc = the_controller;
@@ -1181,9 +1181,8 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int s3c_hsudc_stop(struct usb_gadget_driver *driver)
 {
         struct s3c_hsudc *hsudc = the_controller;
         unsigned long flags;
@@ -1210,7 +1209,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
                         driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 static inline u32 s3c_hsudc_read_frameno(struct s3c_hsudc *hsudc)
 {
@@ -1224,6 +1222,8 @@ static int s3c_hsudc_gadget_getframe(struct usb_gadget *gadget)
 
 static struct usb_gadget_ops s3c_hsudc_gadget_ops = {
         .get_frame      = s3c_hsudc_gadget_getframe,
+        .start          = s3c_hsudc_start,
+        .stop           = s3c_hsudc_stop,
 };
 
 static int s3c_hsudc_probe(struct platform_device *pdev)
@@ -1311,7 +1311,15 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
 
         disable_irq(hsudc->irq);
         local_irq_enable();
+
+        ret = usb_add_gadget_udc(&pdev->dev, &hsudc->gadget);
+        if (ret)
+                goto err_add_udc;
+
         return 0;
+err_add_udc:
+        clk_disable(hsudc->uclk);
+        clk_put(hsudc->uclk);
 err_clk:
         free_irq(hsudc->irq, hsudc);
 err_irq:
@@ -1333,6 +1341,7 @@ static struct platform_driver s3c_hsudc_driver = {
         },
         .probe          = s3c_hsudc_probe,
 };
+MODULE_ALIAS("platform:s3c-hsudc");
 
 static int __init s3c_hsudc_modinit(void)
 {
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 100f2635cf0a..85c1b0d66293 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1552,6 +1552,10 @@ static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
         return -ENOTSUPP;
 }
 
+static int s3c2410_udc_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int s3c2410_udc_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops s3c2410_ops = {
         .get_frame              = s3c2410_udc_get_frame,
         .wakeup                 = s3c2410_udc_wakeup,
@@ -1559,6 +1563,8 @@ static const struct usb_gadget_ops s3c2410_ops = {
         .pullup                 = s3c2410_udc_pullup,
         .vbus_session           = s3c2410_udc_vbus_session,
         .vbus_draw              = s3c2410_vbus_draw,
+        .start                  = s3c2410_udc_start,
+        .stop                   = s3c2410_udc_stop,
 };
 
 static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd)
@@ -1567,7 +1573,7 @@ static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd)
                 return;
 
         if (udc_info->udc_command) {
-                udc_info->udc_command(S3C2410_UDC_P_DISABLE);
+                udc_info->udc_command(cmd);
         } else if (gpio_is_valid(udc_info->pullup_pin)) {
                 int value;
 
@@ -1672,10 +1678,7 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev)
         s3c2410_udc_command(S3C2410_UDC_P_ENABLE);
 }
 
-/*
- *      usb_gadget_probe_driver
- */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int s3c2410_udc_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct s3c2410_udc *udc = the_controller;
@@ -1730,12 +1733,8 @@ register_error:
         udc->gadget.dev.driver = NULL;
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-/*
- *      usb_gadget_unregister_driver
- */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int s3c2410_udc_stop(struct usb_gadget_driver *driver)
 {
         struct s3c2410_udc *udc = the_controller;
 
@@ -1955,6 +1954,10 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
                         goto err_vbus_irq;
         }
 
+        retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
+        if (retval)
+                goto err_add_udc;
+
         if (s3c2410_udc_debugfs_root) {
                 udc->regs_info = debugfs_create_file("registers", S_IRUGO,
                                 s3c2410_udc_debugfs_root,
@@ -1967,6 +1970,10 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
 
         return 0;
 
+err_add_udc:
+        if (udc_info && !udc_info->udc_command &&
+                        gpio_is_valid(udc_info->pullup_pin))
+                gpio_free(udc_info->pullup_pin);
 err_vbus_irq:
         if (udc_info && udc_info->vbus_pin > 0)
                 free_irq(gpio_to_irq(udc_info->vbus_pin), udc);
@@ -1992,6 +1999,8 @@ static int s3c2410_udc_remove(struct platform_device *pdev)
         unsigned int irq;
 
         dev_dbg(&pdev->dev, "%s()\n", __func__);
+
+        usb_del_gadget_udc(&udc->gadget);
         if (udc->driver)
                 return -EBUSY;
 
@@ -2048,26 +2057,22 @@ static int s3c2410_udc_resume(struct platform_device *pdev)
 #define s3c2410_udc_resume      NULL
 #endif
 
-static struct platform_driver udc_driver_2410 = {
-        .driver         = {
-                .name   = "s3c2410-usbgadget",
-                .owner  = THIS_MODULE,
-        },
-        .probe          = s3c2410_udc_probe,
-        .remove         = s3c2410_udc_remove,
-        .suspend        = s3c2410_udc_suspend,
-        .resume         = s3c2410_udc_resume,
+static const struct platform_device_id s3c_udc_ids[] = {
+        { "s3c2410-usbgadget", },
+        { "s3c2440-usbgadget", },
 };
+MODULE_DEVICE_TABLE(platform, s3c_udc_ids);
 
-static struct platform_driver udc_driver_2440 = {
+static struct platform_driver udc_driver_24x0 = {
         .driver         = {
-                .name   = "s3c2440-usbgadget",
+                .name   = "s3c24x0-usbgadget",
                 .owner  = THIS_MODULE,
         },
         .probe          = s3c2410_udc_probe,
         .remove         = s3c2410_udc_remove,
         .suspend        = s3c2410_udc_suspend,
         .resume         = s3c2410_udc_resume,
+        .id_table       = s3c_udc_ids,
 };
 
 static int __init udc_init(void)
@@ -2083,11 +2088,7 @@ static int __init udc_init(void)
                 s3c2410_udc_debugfs_root = NULL;
         }
 
-        retval = platform_driver_register(&udc_driver_2410);
-        if (retval)
-                goto err;
-
-        retval = platform_driver_register(&udc_driver_2440);
+        retval = platform_driver_register(&udc_driver_24x0);
         if (retval)
                 goto err;
 
@@ -2100,13 +2101,10 @@ err:
 
 static void __exit udc_exit(void)
 {
-        platform_driver_unregister(&udc_driver_2410);
-        platform_driver_unregister(&udc_driver_2440);
+        platform_driver_unregister(&udc_driver_24x0);
         debugfs_remove(s3c2410_udc_debugfs_root);
 }
 
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
 module_init(udc_init);
 module_exit(udc_exit);
 
@@ -2114,5 +2112,3 @@ MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_VERSION(DRIVER_VERSION);
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s3c2410-usbgadget");
-MODULE_ALIAS("platform:s3c2440-usbgadget");
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 1ac57a973aa9..ed1b816e58d8 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -242,6 +242,7 @@ static struct usb_composite_driver gserial_driver = {
         .name           = "g_serial",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
 };
 
 static int __init init(void)
diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index 1fa4f705b0b4..d3dd227a2bfc 100644
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -494,7 +494,7 @@ static struct usb_descriptor_header *fsg_hs_function[] = {
 };
 
 /* Maxpacket and other transfer characteristics vary by speed. */
-static struct usb_endpoint_descriptor *
+static __maybe_unused struct usb_endpoint_descriptor *
 fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
                 struct usb_endpoint_descriptor *hs)
 {
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index 2ac1d2147325..dfed4c1d96c0 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -97,16 +97,17 @@ struct eth_dev {
 
 static unsigned qmult = 5;
 module_param(qmult, uint, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(qmult, "queue length multiplier at high speed");
+MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");
 
 #else   /* full speed (low speed doesn't do bulk) */
 #define qmult           1
 #endif
 
-/* for dual-speed hardware, use deeper queues at highspeed */
+/* for dual-speed hardware, use deeper queues at high/super speed */
 static inline int qlen(struct usb_gadget *gadget)
 {
-        if (gadget_is_dualspeed(gadget) && gadget->speed == USB_SPEED_HIGH)
+        if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH ||
+                                            gadget->speed == USB_SPEED_SUPER))
                 return qmult * DEFAULT_QLEN;
         else
                 return DEFAULT_QLEN;
@@ -598,9 +599,10 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
 
         req->length = length;
 
-        /* throttle highspeed IRQ rate back slightly */
+        /* throttle high/super speed IRQ rate back slightly */
         if (gadget_is_dualspeed(dev->gadget))
-                req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH)
+                req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH ||
+                                     dev->gadget->speed == USB_SPEED_SUPER)
                         ? ((atomic_read(&dev->tx_qlen) % qmult) != 0)
                         : 0;
 
@@ -693,8 +695,8 @@ static int eth_stop(struct net_device *net)
                 usb_ep_disable(link->out_ep);
                 if (netif_carrier_ok(net)) {
                         DBG(dev, "host still using in/out endpoints\n");
-                        usb_ep_enable(link->in_ep, link->in);
-                        usb_ep_enable(link->out_ep, link->out);
+                        usb_ep_enable(link->in_ep);
+                        usb_ep_enable(link->out_ep);
                 }
         }
         spin_unlock_irqrestore(&dev->lock, flags);
@@ -871,7 +873,7 @@ struct net_device *gether_connect(struct gether *link)
                 return ERR_PTR(-EINVAL);
 
         link->in_ep->driver_data = dev;
-        result = usb_ep_enable(link->in_ep, link->in);
+        result = usb_ep_enable(link->in_ep);
         if (result != 0) {
                 DBG(dev, "enable %s --> %d\n",
                         link->in_ep->name, result);
@@ -879,7 +881,7 @@ struct net_device *gether_connect(struct gether *link)
         }
 
         link->out_ep->driver_data = dev;
-        result = usb_ep_enable(link->out_ep, link->out);
+        result = usb_ep_enable(link->out_ep);
         if (result != 0) {
                 DBG(dev, "enable %s --> %d\n",
                         link->out_ep->name, result);
@@ -969,7 +971,7 @@ void gether_disconnect(struct gether *link)
         }
         spin_unlock(&dev->req_lock);
         link->in_ep->driver_data = NULL;
-        link->in = NULL;
+        link->in_ep->desc = NULL;
 
         usb_ep_disable(link->out_ep);
         spin_lock(&dev->req_lock);
@@ -984,7 +986,7 @@ void gether_disconnect(struct gether *link)
         }
         spin_unlock(&dev->req_lock);
         link->out_ep->driver_data = NULL;
-        link->out = NULL;
+        link->out_ep->desc = NULL;
 
         /* finish forgetting about this USB link episode */
         dev->header_len = 0;
diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h
index b56e1e7d423c..c966440ddd70 100644
--- a/drivers/usb/gadget/u_ether.h
+++ b/drivers/usb/gadget/u_ether.h
@@ -52,10 +52,6 @@ struct gether {
         struct usb_ep                   *in_ep;
         struct usb_ep                   *out_ep;
 
-        /* descriptors match device speed at gether_connect() time */
-        struct usb_endpoint_descriptor  *in;
-        struct usb_endpoint_descriptor  *out;
-
         bool                            is_zlp_ok;
 
         u16                             cdc_filter;
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index 40f7716b31fc..a8aa46962d81 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -1247,12 +1247,12 @@ int gserial_connect(struct gserial *gser, u8 port_num)
         port = ports[port_num].port;
 
         /* activate the endpoints */
-        status = usb_ep_enable(gser->in, gser->in_desc);
+        status = usb_ep_enable(gser->in);
         if (status < 0)
                 return status;
         gser->in->driver_data = port;
 
-        status = usb_ep_enable(gser->out, gser->out_desc);
+        status = usb_ep_enable(gser->out);
         if (status < 0)
                 goto fail_out;
         gser->out->driver_data = port;
diff --git a/drivers/usb/gadget/u_serial.h b/drivers/usb/gadget/u_serial.h
index 300f0ed9475d..9b0fe6450fbf 100644
--- a/drivers/usb/gadget/u_serial.h
+++ b/drivers/usb/gadget/u_serial.h
@@ -35,8 +35,6 @@ struct gserial {
 
         struct usb_ep                   *in;
         struct usb_ep                   *out;
-        struct usb_endpoint_descriptor  *in_desc;
-        struct usb_endpoint_descriptor  *out_desc;
 
         /* REVISIT avoid this CDC-ACM support harder ... */
         struct usb_cdc_line_coding port_line_coding;    /* 9600-8-N-1 etc */
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
new file mode 100644
index 000000000000..05ba47214361
--- /dev/null
+++ b/drivers/usb/gadget/udc-core.c
@@ -0,0 +1,484 @@
+/**
+ * udc.c - Core UDC Framework
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Felipe Balbi <balbi@ti.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2  of
+ * the License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/err.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+/**
+ * struct usb_udc - describes one usb device controller
+ * @driver - the gadget driver pointer. For use by the class code
+ * @dev - the child device to the actual controller
+ * @gadget - the gadget. For use by the class code
+ * @list - for use by the udc class driver
+ *
+ * This represents the internal data structure which is used by the UDC-class
+ * to hold information about udc driver and gadget together.
+ */
+struct usb_udc {
+        struct usb_gadget_driver        *driver;
+        struct usb_gadget               *gadget;
+        struct device                   dev;
+        struct list_head                list;
+};
+
+static struct class *udc_class;
+static LIST_HEAD(udc_list);
+static DEFINE_MUTEX(udc_lock);
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * usb_gadget_start - tells usb device controller to start up
+ * @gadget: The gadget we want to get started
+ * @driver: The driver we want to bind to @gadget
+ * @bind: The bind function for @driver
+ *
+ * This call is issued by the UDC Class driver when it's about
+ * to register a gadget driver to the device controller, before
+ * calling gadget driver's bind() method.
+ *
+ * It allows the controller to be powered off until strictly
+ * necessary to have it powered on.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int usb_gadget_start(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *))
+{
+        return gadget->ops->start(driver, bind);
+}
+
+/**
+ * usb_gadget_udc_start - tells usb device controller to start up
+ * @gadget: The gadget we want to get started
+ * @driver: The driver we want to bind to @gadget
+ *
+ * This call is issued by the UDC Class driver when it's about
+ * to register a gadget driver to the device controller, before
+ * calling gadget driver's bind() method.
+ *
+ * It allows the controller to be powered off until strictly
+ * necessary to have it powered on.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int usb_gadget_udc_start(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
+{
+        return gadget->ops->udc_start(gadget, driver);
+}
+
+/**
+ * usb_gadget_stop - tells usb device controller we don't need it anymore
+ * @gadget: The device we want to stop activity
+ * @driver: The driver to unbind from @gadget
+ *
+ * This call is issued by the UDC Class driver after calling
+ * gadget driver's unbind() method.
+ *
+ * The details are implementation specific, but it can go as
+ * far as powering off UDC completely and disable its data
+ * line pullups.
+ */
+static inline void usb_gadget_stop(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
+{
+        gadget->ops->stop(driver);
+}
+
+/**
+ * usb_gadget_udc_stop - tells usb device controller we don't need it anymore
+ * @gadget: The device we want to stop activity
+ * @driver: The driver to unbind from @gadget
+ *
+ * This call is issued by the UDC Class driver after calling
+ * gadget driver's unbind() method.
+ *
+ * The details are implementation specific, but it can go as
+ * far as powering off UDC completely and disable its data
+ * line pullups.
+ */
+static inline void usb_gadget_udc_stop(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
+{
+        gadget->ops->udc_stop(gadget, driver);
+}
+
+/**
+ * usb_udc_release - release the usb_udc struct
+ * @dev: the dev member within usb_udc
+ *
+ * This is called by driver's core in order to free memory once the last
+ * reference is released.
+ */
+static void usb_udc_release(struct device *dev)
+{
+        struct usb_udc *udc;
+
+        udc = container_of(dev, struct usb_udc, dev);
+        dev_dbg(dev, "releasing '%s'\n", dev_name(dev));
+        kfree(udc);
+}
+
+static const struct attribute_group *usb_udc_attr_groups[];
+/**
+ * usb_add_gadget_udc - adds a new gadget to the udc class driver list
+ * @parent: the parent device to this udc. Usually the controller
+ * driver's device.
+ * @gadget: the gadget to be added to the list
+ *
+ * Returns zero on success, negative errno otherwise.
+ */
+int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget)
+{
+        struct usb_udc          *udc;
+        int                     ret = -ENOMEM;
+
+        udc = kzalloc(sizeof(*udc), GFP_KERNEL);
+        if (!udc)
+                goto err1;
+
+        device_initialize(&udc->dev);
+        udc->dev.release = usb_udc_release;
+        udc->dev.class = udc_class;
+        udc->dev.groups = usb_udc_attr_groups;
+        udc->dev.parent = parent;
+        ret = dev_set_name(&udc->dev, "%s", kobject_name(&parent->kobj));
+        if (ret)
+                goto err2;
+
+        udc->gadget = gadget;
+
+        mutex_lock(&udc_lock);
+        list_add_tail(&udc->list, &udc_list);
+
+        ret = device_add(&udc->dev);
+        if (ret)
+                goto err3;
+
+        mutex_unlock(&udc_lock);
+
+        return 0;
+err3:
+        list_del(&udc->list);
+        mutex_unlock(&udc_lock);
+
+err2:
+        put_device(&udc->dev);
+
+err1:
+        return ret;
+}
+EXPORT_SYMBOL_GPL(usb_add_gadget_udc);
+
+static int udc_is_newstyle(struct usb_udc *udc)
+{
+        if (udc->gadget->ops->udc_start && udc->gadget->ops->udc_stop)
+                return 1;
+        return 0;
+}
+
+
+static void usb_gadget_remove_driver(struct usb_udc *udc)
+{
+        dev_dbg(&udc->dev, "unregistering UDC driver [%s]\n",
+                        udc->gadget->name);
+
+        kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
+
+        if (udc_is_newstyle(udc)) {
+                usb_gadget_disconnect(udc->gadget);
+                udc->driver->unbind(udc->gadget);
+                usb_gadget_udc_stop(udc->gadget, udc->driver);
+
+        } else {
+                usb_gadget_stop(udc->gadget, udc->driver);
+        }
+
+        udc->driver = NULL;
+        udc->dev.driver = NULL;
+}
+
+/**
+ * usb_del_gadget_udc - deletes @udc from udc_list
+ * @gadget: the gadget to be removed.
+ *
+ * This, will call usb_gadget_unregister_driver() if
+ * the @udc is still busy.
+ */
+void usb_del_gadget_udc(struct usb_gadget *gadget)
+{
+        struct usb_udc          *udc = NULL;
+
+        mutex_lock(&udc_lock);
+        list_for_each_entry(udc, &udc_list, list)
+                if (udc->gadget == gadget)
+                        goto found;
+
+        dev_err(gadget->dev.parent, "gadget not registered.\n");
+        mutex_unlock(&udc_lock);
+
+        return;
+
+found:
+        dev_vdbg(gadget->dev.parent, "unregistering gadget\n");
+
+        list_del(&udc->list);
+        mutex_unlock(&udc_lock);
+
+        if (udc->driver)
+                usb_gadget_remove_driver(udc);
+
+        kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE);
+        device_unregister(&udc->dev);
+}
+EXPORT_SYMBOL_GPL(usb_del_gadget_udc);
+
+/* ------------------------------------------------------------------------- */
+
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *))
+{
+        struct usb_udc          *udc = NULL;
+        int                     ret;
+
+        if (!driver || !bind || !driver->setup)
+                return -EINVAL;
+
+        mutex_lock(&udc_lock);
+        list_for_each_entry(udc, &udc_list, list) {
+                /* For now we take the first one */
+                if (!udc->driver)
+                        goto found;
+        }
+
+        pr_debug("couldn't find an available UDC\n");
+        mutex_unlock(&udc_lock);
+        return -ENODEV;
+
+found:
+        dev_dbg(&udc->dev, "registering UDC driver [%s]\n",
+                        driver->function);
+
+        udc->driver = driver;
+        udc->dev.driver = &driver->driver;
+
+        if (udc_is_newstyle(udc)) {
+                ret = bind(udc->gadget);
+                if (ret)
+                        goto err1;
+                ret = usb_gadget_udc_start(udc->gadget, driver);
+                if (ret) {
+                        driver->unbind(udc->gadget);
+                        goto err1;
+                }
+                usb_gadget_connect(udc->gadget);
+        } else {
+
+                ret = usb_gadget_start(udc->gadget, driver, bind);
+                if (ret)
+                        goto err1;
+
+        }
+
+        kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
+        mutex_unlock(&udc_lock);
+        return 0;
+
+err1:
+        dev_err(&udc->dev, "failed to start %s: %d\n",
+                        udc->driver->function, ret);
+        udc->driver = NULL;
+        udc->dev.driver = NULL;
+        mutex_unlock(&udc_lock);
+        return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_probe_driver);
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+        struct usb_udc          *udc = NULL;
+        int                     ret = -ENODEV;
+
+        if (!driver || !driver->unbind)
+                return -EINVAL;
+
+        mutex_lock(&udc_lock);
+        list_for_each_entry(udc, &udc_list, list)
+                if (udc->driver == driver) {
+                        usb_gadget_remove_driver(udc);
+                        ret = 0;
+                        break;
+                }
+
+        mutex_unlock(&udc_lock);
+        return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_unregister_driver);
+
+/* ------------------------------------------------------------------------- */
+
+static ssize_t usb_udc_srp_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t n)
+{
+        struct usb_udc          *udc = dev_get_drvdata(dev);
+
+        if (sysfs_streq(buf, "1"))
+                usb_gadget_wakeup(udc->gadget);
+
+        return n;
+}
+static DEVICE_ATTR(srp, S_IWUSR, NULL, usb_udc_srp_store);
+
+static ssize_t usb_udc_softconn_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t n)
+{
+        struct usb_udc          *udc = dev_get_drvdata(dev);
+
+        if (sysfs_streq(buf, "connect")) {
+                usb_gadget_connect(udc->gadget);
+        } else if (sysfs_streq(buf, "disconnect")) {
+                usb_gadget_disconnect(udc->gadget);
+        } else {
+                dev_err(dev, "unsupported command '%s'\n", buf);
+                return -EINVAL;
+        }
+
+        return n;
+}
+static DEVICE_ATTR(soft_connect, S_IWUSR, NULL, usb_udc_softconn_store);
+
+static ssize_t usb_udc_speed_show(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct usb_udc          *udc = container_of(dev, struct usb_udc, dev);
+        struct usb_gadget       *gadget = udc->gadget;
+
+        switch (gadget->speed) {
+        case USB_SPEED_LOW:
+                return snprintf(buf, PAGE_SIZE, "low-speed\n");
+        case USB_SPEED_FULL:
+                return snprintf(buf, PAGE_SIZE, "full-speed\n");
+        case USB_SPEED_HIGH:
+                return snprintf(buf, PAGE_SIZE, "high-speed\n");
+        case USB_SPEED_WIRELESS:
+                return snprintf(buf, PAGE_SIZE, "wireless\n");
+        case USB_SPEED_SUPER:
+                return snprintf(buf, PAGE_SIZE, "super-speed\n");
+        case USB_SPEED_UNKNOWN: /* FALLTHROUGH */
+        default:
+                return snprintf(buf, PAGE_SIZE, "UNKNOWN\n");
+        }
+}
+static DEVICE_ATTR(speed, S_IRUSR, usb_udc_speed_show, NULL);
+
+#define USB_UDC_ATTR(name)                                      \
+ssize_t usb_udc_##name##_show(struct device *dev,               \
+                struct device_attribute *attr, char *buf)       \
+{                                                               \
+        struct usb_udc          *udc = container_of(dev, struct usb_udc, dev); \
+        struct usb_gadget       *gadget = udc->gadget;          \
+                                                                \
+        return snprintf(buf, PAGE_SIZE, "%d\n", gadget->name);  \
+}                                                               \
+static DEVICE_ATTR(name, S_IRUSR, usb_udc_##name##_show, NULL)
+
+static USB_UDC_ATTR(is_dualspeed);
+static USB_UDC_ATTR(is_otg);
+static USB_UDC_ATTR(is_a_peripheral);
+static USB_UDC_ATTR(b_hnp_enable);
+static USB_UDC_ATTR(a_hnp_support);
+static USB_UDC_ATTR(a_alt_hnp_support);
+
+static struct attribute *usb_udc_attrs[] = {
+        &dev_attr_srp.attr,
+        &dev_attr_soft_connect.attr,
+        &dev_attr_speed.attr,
+
+        &dev_attr_is_dualspeed.attr,
+        &dev_attr_is_otg.attr,
+        &dev_attr_is_a_peripheral.attr,
+        &dev_attr_b_hnp_enable.attr,
+        &dev_attr_a_hnp_support.attr,
+        &dev_attr_a_alt_hnp_support.attr,
+        NULL,
+};
+
+static const struct attribute_group usb_udc_attr_group = {
+        .attrs = usb_udc_attrs,
+};
+
+static const struct attribute_group *usb_udc_attr_groups[] = {
+        &usb_udc_attr_group,
+        NULL,
+};
+
+static int usb_udc_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+        struct usb_udc          *udc = container_of(dev, struct usb_udc, dev);
+        int                     ret;
+
+        ret = add_uevent_var(env, "USB_UDC_NAME=%s", udc->gadget->name);
+        if (ret) {
+                dev_err(dev, "failed to add uevent USB_UDC_NAME\n");
+                return ret;
+        }
+
+        if (udc->driver) {
+                ret = add_uevent_var(env, "USB_UDC_DRIVER=%s",
+                                udc->driver->function);
+                if (ret) {
+                        dev_err(dev, "failed to add uevent USB_UDC_DRIVER\n");
+                        return ret;
+                }
+        }
+
+        return 0;
+}
+
+static int __init usb_udc_init(void)
+{
+        udc_class = class_create(THIS_MODULE, "udc");
+        if (IS_ERR(udc_class)) {
+                pr_err("failed to create udc class --> %ld\n",
+                                PTR_ERR(udc_class));
+                return PTR_ERR(udc_class);
+        }
+
+        udc_class->dev_uevent = usb_udc_uevent;
+        return 0;
+}
+subsys_initcall(usb_udc_init);
+
+static void __exit usb_udc_exit(void)
+{
+        class_destroy(udc_class);
+}
+module_exit(usb_udc_exit);
+
+MODULE_DESCRIPTION("UDC Framework");
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c
index a5a0fdb808c7..df6882de50bf 100644
--- a/drivers/usb/gadget/webcam.c
+++ b/drivers/usb/gadget/webcam.c
@@ -373,6 +373,7 @@ static struct usb_composite_driver webcam_driver = {
         .name           = "g_webcam",
         .dev            = &webcam_device_descriptor,
         .strings        = webcam_device_strings,
+        .max_speed      = USB_SPEED_HIGH,
         .unbind         = webcam_unbind,
 };
 
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index 6d16db9d9d2d..00e2fd2d4791 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -340,6 +340,7 @@ static struct usb_composite_driver zero_driver = {
         .name           = "zero",
         .dev            = &device_desc,
         .strings        = dev_strings,
+        .max_speed      = USB_SPEED_SUPER,
         .unbind         = zero_unbind,
         .suspend        = zero_suspend,
         .resume         = zero_resume,