usb: gadget: Gadget directory cleanup - group UDC drivers

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 0 insertions, 2764 deletions

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
deleted file mode 100644
index 2b54955d3166..000000000000
--- a/drivers/usb/gadget/dummy_hcd.c
+++ /dev/null
@@ -1,2764 +0,0 @@
-/*
- * dummy_hcd.c -- Dummy/Loopback USB host and device emulator driver.
- *
- * Maintainer: Alan Stern <stern@rowland.harvard.edu>
- *
- * Copyright (C) 2003 David Brownell
- * Copyright (C) 2003-2005 Alan Stern
- *
- * 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 exposes a device side "USB gadget" API, driven by requests to a
- * Linux-USB host controller driver.  USB traffic is simulated; there's
- * no need for USB hardware.  Use this with two other drivers:
- *
- *  - Gadget driver, responding to requests (slave);
- *  - Host-side device driver, as already familiar in Linux.
- *
- * Having this all in one kernel can help some stages of development,
- * bypassing some hardware (and driver) issues.  UML could help too.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/timer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/usb.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb/hcd.h>
-#include <linux/scatterlist.h>
-
-#include <asm/byteorder.h>
-#include <linux/io.h>
-#include <asm/irq.h>
-#include <asm/unaligned.h>
-
-#define DRIVER_DESC	"USB Host+Gadget Emulator"
-#define DRIVER_VERSION	"02 May 2005"
-
-#define POWER_BUDGET	500	/* in mA; use 8 for low-power port testing */
-
-static const char	driver_name[] = "dummy_hcd";
-static const char	driver_desc[] = "USB Host+Gadget Emulator";
-
-static const char	gadget_name[] = "dummy_udc";
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR("David Brownell");
-MODULE_LICENSE("GPL");
-
-struct dummy_hcd_module_parameters {
-	bool is_super_speed;
-	bool is_high_speed;
-	unsigned int num;
-};
-
-static struct dummy_hcd_module_parameters mod_data = {
-	.is_super_speed = false,
-	.is_high_speed = true,
-	.num = 1,
-};
-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");
-module_param_named(num, mod_data.num, uint, S_IRUGO);
-MODULE_PARM_DESC(num, "number of emulated controllers");
-/*-------------------------------------------------------------------------*/
-
-/* gadget side driver data structres */
-struct dummy_ep {
-	struct list_head		queue;
-	unsigned long			last_io;	/* jiffies timestamp */
-	struct usb_gadget		*gadget;
-	const struct usb_endpoint_descriptor *desc;
-	struct usb_ep			ep;
-	unsigned			halted:1;
-	unsigned			wedged:1;
-	unsigned			already_seen:1;
-	unsigned			setup_stage:1;
-	unsigned			stream_en:1;
-};
-
-struct dummy_request {
-	struct list_head		queue;		/* ep's requests */
-	struct usb_request		req;
-};
-
-static inline struct dummy_ep *usb_ep_to_dummy_ep(struct usb_ep *_ep)
-{
-	return container_of(_ep, struct dummy_ep, ep);
-}
-
-static inline struct dummy_request *usb_request_to_dummy_request
-		(struct usb_request *_req)
-{
-	return container_of(_req, struct dummy_request, req);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Every device has ep0 for control requests, plus up to 30 more endpoints,
- * in one of two types:
- *
- *   - Configurable:  direction (in/out), type (bulk, iso, etc), and endpoint
- *     number can be changed.  Names like "ep-a" are used for this type.
- *
- *   - Fixed Function:  in other cases.  some characteristics may be mutable;
- *     that'd be hardware-specific.  Names like "ep12out-bulk" are used.
- *
- * Gadget drivers are responsible for not setting up conflicting endpoint
- * configurations, illegal or unsupported packet lengths, and so on.
- */
-
-static const char ep0name[] = "ep0";
-
-static const char *const ep_name[] = {
-	ep0name,				/* everyone has ep0 */
-
-	/* act like a pxa250: fifteen fixed function endpoints */
-	"ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int",
-	"ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int",
-	"ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso",
-		"ep15in-int",
-
-	/* or like sa1100: two fixed function endpoints */
-	"ep1out-bulk", "ep2in-bulk",
-
-	/* and now some generic EPs so we have enough in multi config */
-	"ep3out", "ep4in", "ep5out", "ep6out", "ep7in", "ep8out", "ep9in",
-	"ep10out", "ep11out", "ep12in", "ep13out", "ep14in", "ep15out",
-};
-#define DUMMY_ENDPOINTS	ARRAY_SIZE(ep_name)
-
-/*-------------------------------------------------------------------------*/
-
-#define FIFO_SIZE		64
-
-struct urbp {
-	struct urb		*urb;
-	struct list_head	urbp_list;
-	struct sg_mapping_iter	miter;
-	u32			miter_started;
-};
-
-
-enum dummy_rh_state {
-	DUMMY_RH_RESET,
-	DUMMY_RH_SUSPENDED,
-	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;
-	u32				stream_en_ep;
-	u8				num_stream[30 / 2];
-
-	unsigned			active:1;
-	unsigned			old_active:1;
-	unsigned			resuming:1;
-};
-
-struct dummy {
-	spinlock_t			lock;
-
-	/*
-	 * SLAVE/GADGET side support
-	 */
-	struct dummy_ep			ep[DUMMY_ENDPOINTS];
-	int				address;
-	struct usb_gadget		gadget;
-	struct usb_gadget_driver	*driver;
-	struct dummy_request		fifo_req;
-	u8				fifo_buf[FIFO_SIZE];
-	u16				devstatus;
-	unsigned			udc_suspended:1;
-	unsigned			pullup:1;
-
-	/*
-	 * MASTER/HOST side support
-	 */
-	struct dummy_hcd		*hs_hcd;
-	struct dummy_hcd		*ss_hcd;
-};
-
-static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd)
-{
-	return (struct dummy_hcd *) (hcd->hcd_priv);
-}
-
-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_hcd *dum)
-{
-	return dummy_hcd_to_hcd(dum)->self.controller;
-}
-
-static inline struct device *udc_dev(struct dummy *dum)
-{
-	return dum->gadget.dev.parent;
-}
-
-static inline struct dummy *ep_to_dummy(struct dummy_ep *ep)
-{
-	return container_of(ep->gadget, struct dummy, gadget);
-}
-
-static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *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)
-{
-	return container_of(dev, struct dummy, gadget.dev);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* SLAVE/GADGET SIDE UTILITY ROUTINES */
-
-/* called with spinlock held */
-static void nuke(struct dummy *dum, struct dummy_ep *ep)
-{
-	while (!list_empty(&ep->queue)) {
-		struct dummy_request	*req;
-
-		req = list_entry(ep->queue.next, struct dummy_request, queue);
-		list_del_init(&req->queue);
-		req->req.status = -ESHUTDOWN;
-
-		spin_unlock(&dum->lock);
-		req->req.complete(&ep->ep, &req->req);
-		spin_lock(&dum->lock);
-	}
-}
-
-/* caller must hold lock */
-static void stop_activity(struct dummy *dum)
-{
-	struct dummy_ep	*ep;
-
-	/* prevent any more requests */
-	dum->address = 0;
-
-	/* The timer is left running so that outstanding URBs can fail */
-
-	/* nuke any pending requests first, so driver i/o is quiesced */
-	list_for_each_entry(ep, &dum->gadget.ep_list, ep.ep_list)
-		nuke(dum, ep);
-
-	/* driver now does any non-usb quiescing necessary */
-}
-
-/**
- * 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 {
-		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;
-
-	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;
-
-	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_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_hcd->old_status = dum_hcd->port_status;
-	dum_hcd->old_active = dum_hcd->active;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* SLAVE/GADGET SIDE DRIVER
- *
- * This only tracks gadget state.  All the work is done when the host
- * side tries some (emulated) i/o operation.  Real device controller
- * drivers would do real i/o using dma, fifos, irqs, timers, etc.
- */
-
-#define is_enabled(dum) \
-	(dum->port_status & USB_PORT_STAT_ENABLE)
-
-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;
-
-	ep = usb_ep_to_dummy_ep(_ep);
-	if (!_ep || !desc || ep->desc || _ep->name == ep0name
-			|| desc->bDescriptorType != USB_DT_ENDPOINT)
-		return -EINVAL;
-	dum = ep_to_dummy(ep);
-	if (!dum->driver)
-		return -ESHUTDOWN;
-
-	dum_hcd = gadget_to_dummy_hcd(&dum->gadget);
-	if (!is_enabled(dum_hcd))
-		return -ESHUTDOWN;
-
-	/*
-	 * 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 = usb_endpoint_maxp(desc) & 0x7ff;
-
-	/* drivers must not request bad settings, since lower levels
-	 * (hardware or its drivers) may not check.  some endpoints
-	 * can't do iso, many have maxpacket limitations, etc.
-	 *
-	 * since this "hardware" driver is here to help debugging, we
-	 * have some extra sanity checks.  (there could be more though,
-	 * especially for "ep9out" style fixed function ones.)
-	 */
-	retval = -EINVAL;
-	switch (usb_endpoint_type(desc)) {
-	case USB_ENDPOINT_XFER_BULK:
-		if (strstr(ep->ep.name, "-iso")
-				|| strstr(ep->ep.name, "-int")) {
-			goto done;
-		}
-		switch (dum->gadget.speed) {
-		case USB_SPEED_SUPER:
-			if (max == 1024)
-				break;
-			goto done;
-		case USB_SPEED_HIGH:
-			if (max == 512)
-				break;
-			goto done;
-		case USB_SPEED_FULL:
-			if (max == 8 || max == 16 || max == 32 || max == 64)
-				/* we'll fake any legal size */
-				break;
-			/* save a return statement */
-		default:
-			goto done;
-		}
-		break;
-	case USB_ENDPOINT_XFER_INT:
-		if (strstr(ep->ep.name, "-iso")) /* bulk is ok */
-			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;
-			/* save a return statement */
-		case USB_SPEED_FULL:
-			if (max <= 64)
-				break;
-			/* save a return statement */
-		default:
-			if (max <= 8)
-				break;
-			goto done;
-		}
-		break;
-	case USB_ENDPOINT_XFER_ISOC:
-		if (strstr(ep->ep.name, "-bulk")
-				|| strstr(ep->ep.name, "-int"))
-			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;
-			/* save a return statement */
-		case USB_SPEED_FULL:
-			if (max <= 1023)
-				break;
-			/* save a return statement */
-		default:
-			goto done;
-		}
-		break;
-	default:
-		/* few chips support control except on ep0 */
-		goto done;
-	}
-
-	_ep->maxpacket = max;
-	if (usb_ss_max_streams(_ep->comp_desc)) {
-		if (!usb_endpoint_xfer_bulk(desc)) {
-			dev_err(udc_dev(dum), "Can't enable stream support on "
-					"non-bulk ep %s\n", _ep->name);
-			return -EINVAL;
-		}
-		ep->stream_en = 1;
-	}
-	ep->desc = desc;
-
-	dev_dbg(udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d stream %s\n",
-		_ep->name,
-		desc->bEndpointAddress & 0x0f,
-		(desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
-		({ char *val;
-		 switch (usb_endpoint_type(desc)) {
-		 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, ep->stream_en ? "enabled" : "disabled");
-
-	/* at this point real hardware should be NAKing transfers
-	 * to that endpoint, until a buffer is queued to it.
-	 */
-	ep->halted = ep->wedged = 0;
-	retval = 0;
-done:
-	return retval;
-}
-
-static int dummy_disable(struct usb_ep *_ep)
-{
-	struct dummy_ep		*ep;
-	struct dummy		*dum;
-	unsigned long		flags;
-
-	ep = usb_ep_to_dummy_ep(_ep);
-	if (!_ep || !ep->desc || _ep->name == ep0name)
-		return -EINVAL;
-	dum = ep_to_dummy(ep);
-
-	spin_lock_irqsave(&dum->lock, flags);
-	ep->desc = NULL;
-	ep->stream_en = 0;
-	nuke(dum, ep);
-	spin_unlock_irqrestore(&dum->lock, flags);
-
-	dev_dbg(udc_dev(dum), "disabled %s\n", _ep->name);
-	return 0;
-}
-
-static struct usb_request *dummy_alloc_request(struct usb_ep *_ep,
-		gfp_t mem_flags)
-{
-	struct dummy_ep		*ep;
-	struct dummy_request	*req;
-
-	if (!_ep)
-		return NULL;
-	ep = usb_ep_to_dummy_ep(_ep);
-
-	req = kzalloc(sizeof(*req), mem_flags);
-	if (!req)
-		return NULL;
-	INIT_LIST_HEAD(&req->queue);
-	return &req->req;
-}
-
-static void dummy_free_request(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct dummy_request	*req;
-
-	if (!_ep || !_req) {
-		WARN_ON(1);
-		return;
-	}
-
-	req = usb_request_to_dummy_request(_req);
-	WARN_ON(!list_empty(&req->queue));
-	kfree(req);
-}
-
-static void fifo_complete(struct usb_ep *ep, struct usb_request *req)
-{
-}
-
-static int dummy_queue(struct usb_ep *_ep, struct usb_request *_req,
-		gfp_t mem_flags)
-{
-	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);
-	if (!_req || !list_empty(&req->queue) || !_req->complete)
-		return -EINVAL;
-
-	ep = usb_ep_to_dummy_ep(_ep);
-	if (!_ep || (!ep->desc && _ep->name != ep0name))
-		return -EINVAL;
-
-	dum = ep_to_dummy(ep);
-	dum_hcd = gadget_to_dummy_hcd(&dum->gadget);
-	if (!dum->driver || !is_enabled(dum_hcd))
-		return -ESHUTDOWN;
-
-#if 0
-	dev_dbg(udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n",
-			ep, _req, _ep->name, _req->length, _req->buf);
-#endif
-	_req->status = -EINPROGRESS;
-	_req->actual = 0;
-	spin_lock_irqsave(&dum->lock, flags);
-
-	/* implement an emulated single-request FIFO */
-	if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) &&
-			list_empty(&dum->fifo_req.queue) &&
-			list_empty(&ep->queue) &&
-			_req->length <= FIFO_SIZE) {
-		req = &dum->fifo_req;
-		req->req = *_req;
-		req->req.buf = dum->fifo_buf;
-		memcpy(dum->fifo_buf, _req->buf, _req->length);
-		req->req.context = dum;
-		req->req.complete = fifo_complete;
-
-		list_add_tail(&req->queue, &ep->queue);
-		spin_unlock(&dum->lock);
-		_req->actual = _req->length;
-		_req->status = 0;
-		_req->complete(_ep, _req);
-		spin_lock(&dum->lock);
-	}  else
-		list_add_tail(&req->queue, &ep->queue);
-	spin_unlock_irqrestore(&dum->lock, flags);
-
-	/* real hardware would likely enable transfers here, in case
-	 * it'd been left NAKing.
-	 */
-	return 0;
-}
-
-static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct dummy_ep		*ep;
-	struct dummy		*dum;
-	int			retval = -EINVAL;
-	unsigned long		flags;
-	struct dummy_request	*req = NULL;
-
-	if (!_ep || !_req)
-		return retval;
-	ep = usb_ep_to_dummy_ep(_ep);
-	dum = ep_to_dummy(ep);
-
-	if (!dum->driver)
-		return -ESHUTDOWN;
-
-	local_irq_save(flags);
-	spin_lock(&dum->lock);
-	list_for_each_entry(req, &ep->queue, queue) {
-		if (&req->req == _req) {
-			list_del_init(&req->queue);
-			_req->status = -ECONNRESET;
-			retval = 0;
-			break;
-		}
-	}
-	spin_unlock(&dum->lock);
-
-	if (retval == 0) {
-		dev_dbg(udc_dev(dum),
-				"dequeued req %p from %s, len %d buf %p\n",
-				req, _ep->name, _req->length, _req->buf);
-		_req->complete(_ep, _req);
-	}
-	local_irq_restore(flags);
-	return retval;
-}
-
-static int
-dummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
-{
-	struct dummy_ep		*ep;
-	struct dummy		*dum;
-
-	if (!_ep)
-		return -EINVAL;
-	ep = usb_ep_to_dummy_ep(_ep);
-	dum = ep_to_dummy(ep);
-	if (!dum->driver)
-		return -ESHUTDOWN;
-	if (!value)
-		ep->halted = ep->wedged = 0;
-	else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) &&
-			!list_empty(&ep->queue))
-		return -EAGAIN;
-	else {
-		ep->halted = 1;
-		if (wedged)
-			ep->wedged = 1;
-	}
-	/* FIXME clear emulated data toggle too */
-	return 0;
-}
-
-static int
-dummy_set_halt(struct usb_ep *_ep, int value)
-{
-	return dummy_set_halt_and_wedge(_ep, value, 0);
-}
-
-static int dummy_set_wedge(struct usb_ep *_ep)
-{
-	if (!_ep || _ep->name == ep0name)
-		return -EINVAL;
-	return dummy_set_halt_and_wedge(_ep, 1, 1);
-}
-
-static const struct usb_ep_ops dummy_ep_ops = {
-	.enable		= dummy_enable,
-	.disable	= dummy_disable,
-
-	.alloc_request	= dummy_alloc_request,
-	.free_request	= dummy_free_request,
-
-	.queue		= dummy_queue,
-	.dequeue	= dummy_dequeue,
-
-	.set_halt	= dummy_set_halt,
-	.set_wedge	= dummy_set_wedge,
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* there are both host and device side versions of this call ... */
-static int dummy_g_get_frame(struct usb_gadget *_gadget)
-{
-	struct timeval	tv;
-
-	do_gettimeofday(&tv);
-	return tv.tv_usec / 1000;
-}
-
-static int dummy_wakeup(struct usb_gadget *_gadget)
-{
-	struct dummy_hcd *dum_hcd;
-
-	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_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0)
-		return -ENOLINK;
-	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_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;
-}
-
-static int dummy_set_selfpowered(struct usb_gadget *_gadget, int value)
-{
-	struct dummy	*dum;
-
-	dum = gadget_to_dummy_hcd(_gadget)->dum;
-	if (value)
-		dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED);
-	else
-		dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED);
-	return 0;
-}
-
-static void dummy_udc_update_ep0(struct dummy *dum)
-{
-	if (dum->gadget.speed == USB_SPEED_SUPER)
-		dum->ep[0].ep.maxpacket = 9;
-	else
-		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_dev_to_dummy(&_gadget->dev);
-
-	if (value && dum->driver) {
-		if (mod_data.is_super_speed)
-			dum->gadget.speed = dum->driver->max_speed;
-		else if (mod_data.is_high_speed)
-			dum->gadget.speed = min_t(u8, USB_SPEED_HIGH,
-					dum->driver->max_speed);
-		else
-			dum->gadget.speed = USB_SPEED_FULL;
-		dummy_udc_update_ep0(dum);
-
-		if (dum->gadget.speed < dum->driver->max_speed)
-			dev_dbg(udc_dev(dum), "This device can perform faster"
-				" if you connect it to a %s port...\n",
-				usb_speed_string(dum->driver->max_speed));
-	}
-	dum_hcd = gadget_to_dummy_hcd(_gadget);
-
-	spin_lock_irqsave(&dum->lock, flags);
-	dum->pullup = (value != 0);
-	set_link_state(dum_hcd);
-	spin_unlock_irqrestore(&dum->lock, flags);
-
-	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,
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* "function" sysfs attribute */
-static ssize_t function_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
-{
-	struct dummy	*dum = gadget_dev_to_dummy(dev);
-
-	if (!dum->driver || !dum->driver->function)
-		return 0;
-	return scnprintf(buf, PAGE_SIZE, "%s\n", dum->driver->function);
-}
-static DEVICE_ATTR_RO(function);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Driver registration/unregistration.
- *
- * This is basically hardware-specific; there's usually only one real USB
- * device (not host) controller since that's how USB devices are intended
- * to work.  So most implementations of these api calls will rely on the
- * fact that only one driver will ever bind to the hardware.  But curious
- * hardware can be built with discrete components, so the gadget API doesn't
- * require that assumption.
- *
- * For this emulator, it might be convenient to create a usb slave device
- * for each driver that registers:  just add to a big root hub.
- */
-
-static int dummy_udc_start(struct usb_gadget *g,
-		struct usb_gadget_driver *driver)
-{
-	struct dummy_hcd	*dum_hcd = gadget_to_dummy_hcd(g);
-	struct dummy		*dum = dum_hcd->dum;
-
-	if (driver->max_speed == USB_SPEED_UNKNOWN)
-		return -EINVAL;
-
-	/*
-	 * SLAVE side init ... the layer above hardware, which
-	 * can't enumerate without help from the driver we're binding.
-	 */
-
-	dum->devstatus = 0;
-
-	dum->driver = driver;
-	dev_dbg(udc_dev(dum), "binding gadget driver '%s'\n",
-			driver->driver.name);
-	return 0;
-}
-
-static int dummy_udc_stop(struct usb_gadget *g,
-		struct usb_gadget_driver *driver)
-{
-	struct dummy_hcd	*dum_hcd = gadget_to_dummy_hcd(g);
-	struct dummy		*dum = dum_hcd->dum;
-
-	if (driver)
-		dev_dbg(udc_dev(dum), "unregister gadget driver '%s'\n",
-				driver->driver.name);
-
-	dum->driver = NULL;
-
-	return 0;
-}
-
-#undef is_enabled
-
-/* The gadget structure is stored inside the hcd structure and will be
- * released along with it. */
-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;
-		usb_ep_set_maxpacket_limit(&ep->ep, ~0);
-		ep->ep.max_streams = 16;
-		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);
-
-#ifdef CONFIG_USB_OTG
-	dum->gadget.is_otg = 1;
-#endif
-}
-
-static int dummy_udc_probe(struct platform_device *pdev)
-{
-	struct dummy	*dum;
-	int		rc;
-
-	dum = *((void **)dev_get_platdata(&pdev->dev));
-	dum->gadget.name = gadget_name;
-	dum->gadget.ops = &dummy_ops;
-	dum->gadget.max_speed = USB_SPEED_SUPER;
-
-	dum->gadget.dev.parent = &pdev->dev;
-	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)
-		goto err_dev;
-	platform_set_drvdata(pdev, dum);
-	return rc;
-
-err_dev:
-	usb_del_gadget_udc(&dum->gadget);
-err_udc:
-	return rc;
-}
-
-static int dummy_udc_remove(struct platform_device *pdev)
-{
-	struct dummy	*dum = platform_get_drvdata(pdev);
-
-	device_remove_file(&dum->gadget.dev, &dev_attr_function);
-	usb_del_gadget_udc(&dum->gadget);
-	return 0;
-}
-
-static void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd,
-		int suspend)
-{
-	spin_lock_irq(&dum->lock);
-	dum->udc_suspended = suspend;
-	set_link_state(dum_hcd);
-	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);
-
-	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)
-{
-	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__);
-	dummy_udc_pm(dum, dum_hcd, 0);
-	usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd));
-	return 0;
-}
-
-static struct platform_driver dummy_udc_driver = {
-	.probe		= dummy_udc_probe,
-	.remove		= dummy_udc_remove,
-	.suspend	= dummy_udc_suspend,
-	.resume		= dummy_udc_resume,
-	.driver		= {
-		.name	= (char *) gadget_name,
-		.owner	= THIS_MODULE,
-	},
-};
-
-/*-------------------------------------------------------------------------*/
-
-static unsigned int dummy_get_ep_idx(const struct usb_endpoint_descriptor *desc)
-{
-	unsigned int index;
-
-	index = usb_endpoint_num(desc) << 1;
-	if (usb_endpoint_dir_in(desc))
-		index |= 1;
-	return index;
-}
-
-/* MASTER/HOST SIDE DRIVER
- *
- * this uses the hcd framework to hook up to host side drivers.
- * its root hub will only have one device, otherwise it acts like
- * a normal host controller.
- *
- * when urbs are queued, they're just stuck on a list that we
- * scan in a timer callback.  that callback connects writes from
- * the host with reads from the device, and so on, based on the
- * usb 2.0 rules.
- */
-
-static int dummy_ep_stream_en(struct dummy_hcd *dum_hcd, struct urb *urb)
-{
-	const struct usb_endpoint_descriptor *desc = &urb->ep->desc;
-	u32 index;
-
-	if (!usb_endpoint_xfer_bulk(desc))
-		return 0;
-
-	index = dummy_get_ep_idx(desc);
-	return (1 << index) & dum_hcd->stream_en_ep;
-}
-
-/*
- * The max stream number is saved as a nibble so for the 30 possible endpoints
- * we only 15 bytes of memory. Therefore we are limited to max 16 streams (0
- * means we use only 1 stream). The maximum according to the spec is 16bit so
- * if the 16 stream limit is about to go, the array size should be incremented
- * to 30 elements of type u16.
- */
-static int get_max_streams_for_pipe(struct dummy_hcd *dum_hcd,
-		unsigned int pipe)
-{
-	int max_streams;
-
-	max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)];
-	if (usb_pipeout(pipe))
-		max_streams >>= 4;
-	else
-		max_streams &= 0xf;
-	max_streams++;
-	return max_streams;
-}
-
-static void set_max_streams_for_pipe(struct dummy_hcd *dum_hcd,
-		unsigned int pipe, unsigned int streams)
-{
-	int max_streams;
-
-	streams--;
-	max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)];
-	if (usb_pipeout(pipe)) {
-		streams <<= 4;
-		max_streams &= 0xf;
-	} else {
-		max_streams &= 0xf0;
-	}
-	max_streams |= streams;
-	dum_hcd->num_stream[usb_pipeendpoint(pipe)] = max_streams;
-}
-
-static int dummy_validate_stream(struct dummy_hcd *dum_hcd, struct urb *urb)
-{
-	unsigned int max_streams;
-	int enabled;
-
-	enabled = dummy_ep_stream_en(dum_hcd, urb);
-	if (!urb->stream_id) {
-		if (enabled)
-			return -EINVAL;
-		return 0;
-	}
-	if (!enabled)
-		return -EINVAL;
-
-	max_streams = get_max_streams_for_pipe(dum_hcd,
-			usb_pipeendpoint(urb->pipe));
-	if (urb->stream_id > max_streams) {
-		dev_err(dummy_dev(dum_hcd), "Stream id %d is out of range.\n",
-				urb->stream_id);
-		BUG();
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static int dummy_urb_enqueue(
-	struct usb_hcd			*hcd,
-	struct urb			*urb,
-	gfp_t				mem_flags
-) {
-	struct dummy_hcd *dum_hcd;
-	struct urbp	*urbp;
-	unsigned long	flags;
-	int		rc;
-
-	urbp = kmalloc(sizeof *urbp, mem_flags);
-	if (!urbp)
-		return -ENOMEM;
-	urbp->urb = urb;
-	urbp->miter_started = 0;
-
-	dum_hcd = hcd_to_dummy_hcd(hcd);
-	spin_lock_irqsave(&dum_hcd->dum->lock, flags);
-
-	rc = dummy_validate_stream(dum_hcd, urb);
-	if (rc) {
-		kfree(urbp);
-		goto done;
-	}
-
-	rc = usb_hcd_link_urb_to_ep(hcd, urb);
-	if (rc) {
-		kfree(urbp);
-		goto done;
-	}
-
-	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_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_hcd->timer))
-		mod_timer(&dum_hcd->timer, jiffies + 1);
-
- done:
-	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_hcd *dum_hcd;
-	unsigned long	flags;
-	int		rc;
-
-	/* giveback happens automatically in timer callback,
-	 * so make sure the callback happens */
-	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_hcd->rh_state != DUMMY_RH_RUNNING &&
-			!list_empty(&dum_hcd->urbp_list))
-		mod_timer(&dum_hcd->timer, jiffies);
-
-	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
-	return rc;
-}
-
-static int dummy_perform_transfer(struct urb *urb, struct dummy_request *req,
-		u32 len)
-{
-	void *ubuf, *rbuf;
-	struct urbp *urbp = urb->hcpriv;
-	int to_host;
-	struct sg_mapping_iter *miter = &urbp->miter;
-	u32 trans = 0;
-	u32 this_sg;
-	bool next_sg;
-
-	to_host = usb_pipein(urb->pipe);
-	rbuf = req->req.buf + req->req.actual;
-
-	if (!urb->num_sgs) {
-		ubuf = urb->transfer_buffer + urb->actual_length;
-		if (to_host)
-			memcpy(ubuf, rbuf, len);
-		else
-			memcpy(rbuf, ubuf, len);
-		return len;
-	}
-
-	if (!urbp->miter_started) {
-		u32 flags = SG_MITER_ATOMIC;
-
-		if (to_host)
-			flags |= SG_MITER_TO_SG;
-		else
-			flags |= SG_MITER_FROM_SG;
-
-		sg_miter_start(miter, urb->sg, urb->num_sgs, flags);
-		urbp->miter_started = 1;
-	}
-	next_sg = sg_miter_next(miter);
-	if (next_sg == false) {
-		WARN_ON_ONCE(1);
-		return -EINVAL;
-	}
-	do {
-		ubuf = miter->addr;
-		this_sg = min_t(u32, len, miter->length);
-		miter->consumed = this_sg;
-		trans += this_sg;
-
-		if (to_host)
-			memcpy(ubuf, rbuf, this_sg);
-		else
-			memcpy(rbuf, ubuf, this_sg);
-		len -= this_sg;
-
-		if (!len)
-			break;
-		next_sg = sg_miter_next(miter);
-		if (next_sg == false) {
-			WARN_ON_ONCE(1);
-			return -EINVAL;
-		}
-
-		rbuf += this_sg;
-	} while (1);
-
-	sg_miter_stop(miter);
-	return trans;
-}
-
-/* transfer up to a frame's worth; caller must own lock */
-static int transfer(struct dummy_hcd *dum_hcd, struct urb *urb,
-		struct dummy_ep *ep, int limit, int *status)
-{
-	struct dummy		*dum = dum_hcd->dum;
-	struct dummy_request	*req;
-
-top:
-	/* if there's no request queued, the device is NAKing; return */
-	list_for_each_entry(req, &ep->queue, queue) {
-		unsigned	host_len, dev_len, len;
-		int		is_short, to_host;
-		int		rescan = 0;
-
-		if (dummy_ep_stream_en(dum_hcd, urb)) {
-			if ((urb->stream_id != req->req.stream_id))
-				continue;
-		}
-
-		/* 1..N packets of ep->ep.maxpacket each ... the last one
-		 * may be short (including zero length).
-		 *
-		 * writer can send a zlp explicitly (length 0) or implicitly
-		 * (length mod maxpacket zero, and 'zero' flag); they always
-		 * terminate reads.
-		 */
-		host_len = urb->transfer_buffer_length - urb->actual_length;
-		dev_len = req->req.length - req->req.actual;
-		len = min(host_len, dev_len);
-
-		/* FIXME update emulated data toggle too */
-
-		to_host = usb_pipein(urb->pipe);
-		if (unlikely(len == 0))
-			is_short = 1;
-		else {
-			/* not enough bandwidth left? */
-			if (limit < ep->ep.maxpacket && limit < len)
-				break;
-			len = min_t(unsigned, len, limit);
-			if (len == 0)
-				break;
-
-			/* use an extra pass for the final short packet */
-			if (len > ep->ep.maxpacket) {
-				rescan = 1;
-				len -= (len % ep->ep.maxpacket);
-			}
-			is_short = (len % ep->ep.maxpacket) != 0;
-
-			len = dummy_perform_transfer(urb, req, len);
-
-			ep->last_io = jiffies;
-			if ((int)len < 0) {
-				req->req.status = len;
-			} else {
-				limit -= len;
-				urb->actual_length += len;
-				req->req.actual += len;
-			}
-		}
-
-		/* short packets terminate, maybe with overflow/underflow.
-		 * it's only really an error to write too much.
-		 *
-		 * partially filling a buffer optionally blocks queue advances
-		 * (so completion handlers can clean up the queue) but we don't
-		 * need to emulate such data-in-flight.
-		 */
-		if (is_short) {
-			if (host_len == dev_len) {
-				req->req.status = 0;
-				*status = 0;
-			} else if (to_host) {
-				req->req.status = 0;
-				if (dev_len > host_len)
-					*status = -EOVERFLOW;
-				else
-					*status = 0;
-			} else if (!to_host) {
-				*status = 0;
-				if (host_len > dev_len)
-					req->req.status = -EOVERFLOW;
-				else
-					req->req.status = 0;
-			}
-
-		/* many requests terminate without a short packet */
-		} else {
-			if (req->req.length == req->req.actual
-					&& !req->req.zero)
-				req->req.status = 0;
-			if (urb->transfer_buffer_length == urb->actual_length
-					&& !(urb->transfer_flags
-						& URB_ZERO_PACKET))
-				*status = 0;
-		}
-
-		/* device side completion --> continuable */
-		if (req->req.status != -EINPROGRESS) {
-			list_del_init(&req->queue);
-
-			spin_unlock(&dum->lock);
-			req->req.complete(&ep->ep, &req->req);
-			spin_lock(&dum->lock);
-
-			/* requests might have been unlinked... */
-			rescan = 1;
-		}
-
-		/* host side completion --> terminate */
-		if (*status != -EINPROGRESS)
-			break;
-
-		/* rescan to continue with any other queued i/o */
-		if (rescan)
-			goto top;
-	}
-	return limit;
-}
-
-static int periodic_bytes(struct dummy *dum, struct dummy_ep *ep)
-{
-	int	limit = ep->ep.maxpacket;
-
-	if (dum->gadget.speed == USB_SPEED_HIGH) {
-		int	tmp;
-
-		/* high bandwidth mode */
-		tmp = usb_endpoint_maxp(ep->desc);
-		tmp = (tmp >> 11) & 0x03;
-		tmp *= 8 /* applies to entire frame */;
-		limit += limit * tmp;
-	}
-	if (dum->gadget.speed == USB_SPEED_SUPER) {
-		switch (usb_endpoint_type(ep->desc)) {
-		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_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))
-
-static struct dummy_ep *find_endpoint(struct dummy *dum, u8 address)
-{
-	int		i;
-
-	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];
-	for (i = 1; i < DUMMY_ENDPOINTS; i++) {
-		struct dummy_ep	*ep = &dum->ep[i];
-
-		if (!ep->desc)
-			continue;
-		if (ep->desc->bEndpointAddress == address)
-			return ep;
-	}
-	return NULL;
-}
-
-#undef is_active
-
-#define Dev_Request	(USB_TYPE_STANDARD | USB_RECIP_DEVICE)
-#define Dev_InRequest	(Dev_Request | USB_DIR_IN)
-#define Intf_Request	(USB_TYPE_STANDARD | USB_RECIP_INTERFACE)
-#define Intf_InRequest	(Intf_Request | USB_DIR_IN)
-#define Ep_Request	(USB_TYPE_STANDARD | USB_RECIP_ENDPOINT)
-#define Ep_InRequest	(Ep_Request | USB_DIR_IN)
-
-
-/**
- * handle_control_request() - handles all control transfers
- * @dum: pointer to dummy (the_controller)
- * @urb: the urb request to handle
- * @setup: pointer to the setup data for a USB device control
- *	 request
- * @status: pointer to request handling status
- *
- * Return 0 - if the request was handled
- *	  1 - if the request wasn't handles
- *	  error code on error
- */
-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;
-
-	w_index = le16_to_cpu(setup->wIndex);
-	w_value = le16_to_cpu(setup->wValue);
-	switch (setup->bRequest) {
-	case USB_REQ_SET_ADDRESS:
-		if (setup->bRequestType != Dev_Request)
-			break;
-		dum->address = w_value;
-		*status = 0;
-		dev_dbg(udc_dev(dum), "set_address = %d\n",
-				w_value);
-		ret_val = 0;
-		break;
-	case USB_REQ_SET_FEATURE:
-		if (setup->bRequestType == Dev_Request) {
-			ret_val = 0;
-			switch (w_value) {
-			case USB_DEVICE_REMOTE_WAKEUP:
-				break;
-			case USB_DEVICE_B_HNP_ENABLE:
-				dum->gadget.b_hnp_enable = 1;
-				break;
-			case USB_DEVICE_A_HNP_SUPPORT:
-				dum->gadget.a_hnp_support = 1;
-				break;
-			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;
-			}
-			if (ret_val == 0) {
-				dum->devstatus |= (1 << w_value);
-				*status = 0;
-			}
-		} else if (setup->bRequestType == Ep_Request) {
-			/* endpoint halt */
-			ep2 = find_endpoint(dum, w_index);
-			if (!ep2 || ep2->ep.name == ep0name) {
-				ret_val = -EOPNOTSUPP;
-				break;
-			}
-			ep2->halted = 1;
-			ret_val = 0;
-			*status = 0;
-		}
-		break;
-	case USB_REQ_CLEAR_FEATURE:
-		if (setup->bRequestType == Dev_Request) {
-			ret_val = 0;
-			switch (w_value) {
-			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;
-			}
-			if (ret_val == 0) {
-				dum->devstatus &= ~(1 << w_value);
-				*status = 0;
-			}
-		} else if (setup->bRequestType == Ep_Request) {
-			/* endpoint halt */
-			ep2 = find_endpoint(dum, w_index);
-			if (!ep2) {
-				ret_val = -EOPNOTSUPP;
-				break;
-			}
-			if (!ep2->wedged)
-				ep2->halted = 0;
-			ret_val = 0;
-			*status = 0;
-		}
-		break;
-	case USB_REQ_GET_STATUS:
-		if (setup->bRequestType == Dev_InRequest
-				|| setup->bRequestType == Intf_InRequest
-				|| setup->bRequestType == Ep_InRequest) {
-			char *buf;
-			/*
-			 * device: remote wakeup, selfpowered
-			 * interface: nothing
-			 * endpoint: halt
-			 */
-			buf = (char *)urb->transfer_buffer;
-			if (urb->transfer_buffer_length > 0) {
-				if (setup->bRequestType == Ep_InRequest) {
-					ep2 = find_endpoint(dum, w_index);
-					if (!ep2) {
-						ret_val = -EOPNOTSUPP;
-						break;
-					}
-					buf[0] = ep2->halted;
-				} else if (setup->bRequestType ==
-					   Dev_InRequest) {
-					buf[0] = (u8)dum->devstatus;
-				} else
-					buf[0] = 0;
-			}
-			if (urb->transfer_buffer_length > 1)
-				buf[1] = 0;
-			urb->actual_length = min_t(u32, 2,
-				urb->transfer_buffer_length);
-			ret_val = 0;
-			*status = 0;
-		}
-		break;
-	}
-	return ret_val;
-}
-
-/* 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_hcd)
-{
-	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;
-	int			i;
-
-	/* simplistic model for one frame's bandwidth */
-	switch (dum->gadget.speed) {
-	case USB_SPEED_LOW:
-		total = 8/*bytes*/ * 12/*packets*/;
-		break;
-	case USB_SPEED_FULL:
-		total = 64/*bytes*/ * 19/*packets*/;
-		break;
-	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_hcd), "bogus device speed\n");
-		return;
-	}
-
-	/* FIXME if HZ != 1000 this will probably misbehave ... */
-
-	/* look at each urb queued by the host side driver */
-	spin_lock_irqsave(&dum->lock, flags);
-
-	if (!dum_hcd->udev) {
-		dev_err(dummy_dev(dum_hcd),
-				"timer fired with no URBs pending?\n");
-		spin_unlock_irqrestore(&dum->lock, flags);
-		return;
-	}
-
-	for (i = 0; i < DUMMY_ENDPOINTS; i++) {
-		if (!ep_name[i])
-			break;
-		dum->ep[i].already_seen = 0;
-	}
-
-restart:
-	list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) {
-		struct urb		*urb;
-		struct dummy_request	*req;
-		u8			address;
-		struct dummy_ep		*ep = NULL;
-		int			type;
-		int			status = -EINPROGRESS;
-
-		urb = urbp->urb;
-		if (urb->unlinked)
-			goto return_urb;
-		else if (dum_hcd->rh_state != DUMMY_RH_RUNNING)
-			continue;
-		type = usb_pipetype(urb->pipe);
-
-		/* used up this frame's non-periodic bandwidth?
-		 * FIXME there's infinite bandwidth for control and
-		 * periodic transfers ... unrealistic.
-		 */
-		if (total <= 0 && type == PIPE_BULK)
-			continue;
-
-		/* find the gadget's ep for this request (if configured) */
-		address = usb_pipeendpoint (urb->pipe);
-		if (usb_pipein(urb->pipe))
-			address |= USB_DIR_IN;
-		ep = find_endpoint(dum, address);
-		if (!ep) {
-			/* set_configuration() disagreement */
-			dev_dbg(dummy_dev(dum_hcd),
-				"no ep configured for urb %p\n",
-				urb);
-			status = -EPROTO;
-			goto return_urb;
-		}
-
-		if (ep->already_seen)
-			continue;
-		ep->already_seen = 1;
-		if (ep == &dum->ep[0] && urb->error_count) {
-			ep->setup_stage = 1;	/* a new urb */
-			urb->error_count = 0;
-		}
-		if (ep->halted && !ep->setup_stage) {
-			/* NOTE: must not be iso! */
-			dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n",
-					ep->ep.name, urb);
-			status = -EPIPE;
-			goto return_urb;
-		}
-		/* FIXME make sure both ends agree on maxpacket */
-
-		/* handle control requests */
-		if (ep == &dum->ep[0] && ep->setup_stage) {
-			struct usb_ctrlrequest		setup;
-			int				value = 1;
-
-			setup = *(struct usb_ctrlrequest *) urb->setup_packet;
-			/* paranoia, in case of stale queued data */
-			list_for_each_entry(req, &ep->queue, queue) {
-				list_del_init(&req->queue);
-				req->req.status = -EOVERFLOW;
-				dev_dbg(udc_dev(dum), "stale req = %p\n",
-						req);
-
-				spin_unlock(&dum->lock);
-				req->req.complete(&ep->ep, &req->req);
-				spin_lock(&dum->lock);
-				ep->already_seen = 0;
-				goto restart;
-			}
-
-			/* gadget driver never sees set_address or operations
-			 * on standard feature flags.  some hardware doesn't
-			 * even expose them.
-			 */
-			ep->last_io = jiffies;
-			ep->setup_stage = 0;
-			ep->halted = 0;
-
-			value = handle_control_request(dum_hcd, urb, &setup,
-						       &status);
-
-			/* gadget driver handles all other requests.  block
-			 * until setup() returns; no reentrancy issues etc.
-			 */
-			if (value > 0) {
-				spin_unlock(&dum->lock);
-				value = dum->driver->setup(&dum->gadget,
-						&setup);
-				spin_lock(&dum->lock);
-
-				if (value >= 0) {
-					/* no delays (max 64KB data stage) */
-					limit = 64*1024;
-					goto treat_control_like_bulk;
-				}
-				/* error, see below */
-			}
-
-			if (value < 0) {
-				if (value != -EOPNOTSUPP)
-					dev_dbg(udc_dev(dum),
-						"setup --> %d\n",
-						value);
-				status = -EPIPE;
-				urb->actual_length = 0;
-			}
-
-			goto return_urb;
-		}
-
-		/* non-control requests */
-		limit = total;
-		switch (usb_pipetype(urb->pipe)) {
-		case PIPE_ISOCHRONOUS:
-			/* FIXME is it urb->interval since the last xfer?
-			 * use urb->iso_frame_desc[i].
-			 * complete whether or not ep has requests queued.
-			 * report random errors, to debug drivers.
-			 */
-			limit = max(limit, periodic_bytes(dum, ep));
-			status = -ENOSYS;
-			break;
-
-		case PIPE_INTERRUPT:
-			/* FIXME is it urb->interval since the last xfer?
-			 * this almost certainly polls too fast.
-			 */
-			limit = max(limit, periodic_bytes(dum, ep));
-			/* FALLTHROUGH */
-
-		default:
-treat_control_like_bulk:
-			ep->last_io = jiffies;
-			total = transfer(dum_hcd, urb, ep, limit, &status);
-			break;
-		}
-
-		/* incomplete transfer? */
-		if (status == -EINPROGRESS)
-			continue;
-
-return_urb:
-		list_del(&urbp->urbp_list);
-		kfree(urbp);
-		if (ep)
-			ep->already_seen = ep->setup_stage = 0;
-
-		usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb);
-		spin_unlock(&dum->lock);
-		usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status);
-		spin_lock(&dum->lock);
-
-		goto restart;
-	}
-
-	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_hcd->timer, jiffies + msecs_to_jiffies(1));
-	}
-
-	spin_unlock_irqrestore(&dum->lock, flags);
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define PORT_C_MASK \
-	((USB_PORT_STAT_C_CONNECTION \
-	| USB_PORT_STAT_C_ENABLE \
-	| USB_PORT_STAT_C_SUSPEND \
-	| USB_PORT_STAT_C_OVERCURRENT \
-	| USB_PORT_STAT_C_RESET) << 16)
-
-static int dummy_hub_status(struct usb_hcd *hcd, char *buf)
-{
-	struct dummy_hcd	*dum_hcd;
-	unsigned long		flags;
-	int			retval = 0;
-
-	dum_hcd = hcd_to_dummy_hcd(hcd);
-
-	spin_lock_irqsave(&dum_hcd->dum->lock, flags);
-	if (!HCD_HW_ACCESSIBLE(hcd))
-		goto done;
-
-	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_hcd->port_status & PORT_C_MASK) != 0) {
-		*buf = (1 << 1);
-		dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n",
-				dum_hcd->port_status);
-		retval = 1;
-		if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED)
-			usb_hcd_resume_root_hub(hcd);
-	}
-done:
-	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
-	return retval;
-}
-
-/* usb 3.0 root hub device descriptor */
-static struct {
-	struct usb_bos_descriptor bos;
-	struct usb_ss_cap_descriptor ss_cap;
-} __packed usb3_bos_desc = {
-
-	.bos = {
-		.bLength		= USB_DT_BOS_SIZE,
-		.bDescriptorType	= USB_DT_BOS,
-		.wTotalLength		= cpu_to_le16(sizeof(usb3_bos_desc)),
-		.bNumDeviceCaps		= 1,
-	},
-	.ss_cap = {
-		.bLength		= USB_DT_USB_SS_CAP_SIZE,
-		.bDescriptorType	= USB_DT_DEVICE_CAPABILITY,
-		.bDevCapabilityType	= USB_SS_CAP_TYPE,
-		.wSpeedSupported	= cpu_to_le16(USB_5GBPS_OPERATION),
-		.bFunctionalitySupport	= ilog2(USB_5GBPS_OPERATION),
-	},
-};
-
-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);
-	desc->bDescriptorType = 0x29;
-	desc->bDescLength = 9;
-	desc->wHubCharacteristics = cpu_to_le16(0x0001);
-	desc->bNbrPorts = 1;
-	desc->u.hs.DeviceRemovable[0] = 0xff;
-	desc->u.hs.DeviceRemovable[1] = 0xff;
-}
-
-static int dummy_hub_control(
-	struct usb_hcd	*hcd,
-	u16		typeReq,
-	u16		wValue,
-	u16		wIndex,
-	char		*buf,
-	u16		wLength
-) {
-	struct dummy_hcd *dum_hcd;
-	int		retval = 0;
-	unsigned long	flags;
-
-	if (!HCD_HW_ACCESSIBLE(hcd))
-		return -ETIMEDOUT;
-
-	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 (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_hcd->resuming = 1;
-				dum_hcd->re_timeout = jiffies +
-						msecs_to_jiffies(20);
-			}
-			break;
-		case USB_PORT_FEAT_POWER:
-			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_hcd->port_status &= ~(1 << wValue);
-			set_link_state(dum_hcd);
-		}
-		break;
-	case GetHubDescriptor:
-		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 DeviceRequest | USB_REQ_GET_DESCRIPTOR:
-		if (hcd->speed != HCD_USB3)
-			goto error;
-
-		if ((wValue >> 8) != USB_DT_BOS)
-			goto error;
-
-		memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc));
-		retval = sizeof(usb3_bos_desc);
-		break;
-
-	case GetHubStatus:
-		*(__le32 *) buf = cpu_to_le32(0);
-		break;
-	case GetPortStatus:
-		if (wIndex != 1)
-			retval = -EPIPE;
-
-		/* whoever resets or resumes must GetPortStatus to
-		 * complete it!!
-		 */
-		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_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_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:
-			/* 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_hcd);
-				if (((1 << USB_DEVICE_B_HNP_ENABLE)
-						& dum_hcd->dum->devstatus) != 0)
-					dev_dbg(dummy_dev(dum_hcd),
-							"no HNP yet!\n");
-			}
-			break;
-		case USB_PORT_FEAT_POWER:
-			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 */
-			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);
-			/*
-			 * 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 (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_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_hcd->dum->lock, flags);
-
-	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_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
-
-	dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__);
-
-	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_hcd->dum->lock);
-	return 0;
-}
-
-static int dummy_bus_resume(struct usb_hcd *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_hcd->dum->lock);
-	if (!HCD_HW_ACCESSIBLE(hcd)) {
-		rc = -ESHUTDOWN;
-	} else {
-		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_hcd->dum->lock);
-	return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb)
-{
-	int ep = usb_pipeendpoint(urb->pipe);
-
-	return snprintf(buf, size,
-		"urb/%p %s ep%d%s%s len %d/%d\n",
-		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;
-		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; \
-		} s; }),
-		urb->actual_length, urb->transfer_buffer_length);
-}
-
-static ssize_t urbs_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
-{
-	struct usb_hcd		*hcd = dev_get_drvdata(dev);
-	struct dummy_hcd	*dum_hcd = hcd_to_dummy_hcd(hcd);
-	struct urbp		*urbp;
-	size_t			size = 0;
-	unsigned long		flags;
-
-	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_hcd->dum->lock, flags);
-
-	return size;
-}
-static DEVICE_ATTR_RO(urbs);
-
-static int dummy_start_ss(struct dummy_hcd *dum_hcd)
-{
-	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;
-	dum_hcd->stream_en_ep = 0;
-	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);
-}
-
-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.
-	 */
-	if (!usb_hcd_is_primary_hcd(hcd))
-		return dummy_start_ss(dum_hcd);
-
-	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;
-	hcd->uses_new_polling = 1;
-
-#ifdef CONFIG_USB_OTG
-	hcd->self.otg_port = 1;
-#endif
-
-	/* FIXME 'urbs' should be a per-device thing, maybe in usbcore */
-	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(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");
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int dummy_h_get_frame(struct usb_hcd *hcd)
-{
-	return dummy_g_get_frame(NULL);
-}
-
-static int dummy_setup(struct usb_hcd *hcd)
-{
-	struct dummy *dum;
-
-	dum = *((void **)dev_get_platdata(hcd->self.controller));
-	hcd->self.sg_tablesize = ~0;
-	if (usb_hcd_is_primary_hcd(hcd)) {
-		dum->hs_hcd = hcd_to_dummy_hcd(hcd);
-		dum->hs_hcd->dum = dum;
-		/*
-		 * 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 {
-		dum->ss_hcd = hcd_to_dummy_hcd(hcd);
-		dum->ss_hcd->dum = dum;
-		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 */
-static 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)
-{
-	struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
-	unsigned long flags;
-	int max_stream;
-	int ret_streams = num_streams;
-	unsigned int index;
-	unsigned int i;
-
-	if (!num_eps)
-		return -EINVAL;
-
-	spin_lock_irqsave(&dum_hcd->dum->lock, flags);
-	for (i = 0; i < num_eps; i++) {
-		index = dummy_get_ep_idx(&eps[i]->desc);
-		if ((1 << index) & dum_hcd->stream_en_ep) {
-			ret_streams = -EINVAL;
-			goto out;
-		}
-		max_stream = usb_ss_max_streams(&eps[i]->ss_ep_comp);
-		if (!max_stream) {
-			ret_streams = -EINVAL;
-			goto out;
-		}
-		if (max_stream < ret_streams) {
-			dev_dbg(dummy_dev(dum_hcd), "Ep 0x%x only supports %u "
-					"stream IDs.\n",
-					eps[i]->desc.bEndpointAddress,
-					max_stream);
-			ret_streams = max_stream;
-		}
-	}
-
-	for (i = 0; i < num_eps; i++) {
-		index = dummy_get_ep_idx(&eps[i]->desc);
-		dum_hcd->stream_en_ep |= 1 << index;
-		set_max_streams_for_pipe(dum_hcd,
-				usb_endpoint_num(&eps[i]->desc), ret_streams);
-	}
-out:
-	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
-	return ret_streams;
-}
-
-/* Reverts a group of bulk endpoints back to not using stream IDs. */
-static 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)
-{
-	struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
-	unsigned long flags;
-	int ret;
-	unsigned int index;
-	unsigned int i;
-
-	spin_lock_irqsave(&dum_hcd->dum->lock, flags);
-	for (i = 0; i < num_eps; i++) {
-		index = dummy_get_ep_idx(&eps[i]->desc);
-		if (!((1 << index) & dum_hcd->stream_en_ep)) {
-			ret = -EINVAL;
-			goto out;
-		}
-	}
-
-	for (i = 0; i < num_eps; i++) {
-		index = dummy_get_ep_idx(&eps[i]->desc);
-		dum_hcd->stream_en_ep &= ~(1 << index);
-		set_max_streams_for_pipe(dum_hcd,
-				usb_endpoint_num(&eps[i]->desc), 0);
-	}
-	ret = 0;
-out:
-	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
-	return ret;
-}
-
-static struct hc_driver dummy_hcd = {
-	.description =		(char *) driver_name,
-	.product_desc =		"Dummy host controller",
-	.hcd_priv_size =	sizeof(struct dummy_hcd),
-
-	.flags =		HCD_USB3 | HCD_SHARED,
-
-	.reset =		dummy_setup,
-	.start =		dummy_start,
-	.stop =			dummy_stop,
-
-	.urb_enqueue =		dummy_urb_enqueue,
-	.urb_dequeue =		dummy_urb_dequeue,
-
-	.get_frame_number =	dummy_h_get_frame,
-
-	.hub_status_data =	dummy_hub_status,
-	.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 dummy		*dum;
-	struct usb_hcd		*hs_hcd;
-	struct usb_hcd		*ss_hcd;
-	int			retval;
-
-	dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
-	dum = *((void **)dev_get_platdata(&pdev->dev));
-
-	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;
-	hs_hcd->has_tt = 1;
-
-	retval = usb_add_hcd(hs_hcd, 0, 0);
-	if (retval)
-		goto put_usb2_hcd;
-
-	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_remove_hcd(hs_hcd);
-put_usb2_hcd:
-	usb_put_hcd(hs_hcd);
-	dum->hs_hcd = dum->ss_hcd = NULL;
-	return retval;
-}
-
-static int dummy_hcd_remove(struct platform_device *pdev)
-{
-	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));
-
-	dum->hs_hcd = NULL;
-	dum->ss_hcd = NULL;
-
-	return 0;
-}
-
-static int dummy_hcd_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	struct usb_hcd		*hcd;
-	struct dummy_hcd	*dum_hcd;
-	int			rc = 0;
-
-	dev_dbg(&pdev->dev, "%s\n", __func__);
-
-	hcd = platform_get_drvdata(pdev);
-	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
-		clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-	return rc;
-}
-
-static int dummy_hcd_resume(struct platform_device *pdev)
-{
-	struct usb_hcd		*hcd;
-
-	dev_dbg(&pdev->dev, "%s\n", __func__);
-
-	hcd = platform_get_drvdata(pdev);
-	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-	usb_hcd_poll_rh_status(hcd);
-	return 0;
-}
-
-static struct platform_driver dummy_hcd_driver = {
-	.probe		= dummy_hcd_probe,
-	.remove		= dummy_hcd_remove,
-	.suspend	= dummy_hcd_suspend,
-	.resume		= dummy_hcd_resume,
-	.driver		= {
-		.name	= (char *) driver_name,
-		.owner	= THIS_MODULE,
-	},
-};
-
-/*-------------------------------------------------------------------------*/
-#define MAX_NUM_UDC	2
-static struct platform_device *the_udc_pdev[MAX_NUM_UDC];
-static struct platform_device *the_hcd_pdev[MAX_NUM_UDC];
-
-static int __init init(void)
-{
-	int	retval = -ENOMEM;
-	int	i;
-	struct	dummy *dum[MAX_NUM_UDC];
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	if (!mod_data.is_high_speed && mod_data.is_super_speed)
-		return -EINVAL;
-
-	if (mod_data.num < 1 || mod_data.num > MAX_NUM_UDC) {
-		pr_err("Number of emulated UDC must be in range of 1…%d\n",
-				MAX_NUM_UDC);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < mod_data.num; i++) {
-		the_hcd_pdev[i] = platform_device_alloc(driver_name, i);
-		if (!the_hcd_pdev[i]) {
-			i--;
-			while (i >= 0)
-				platform_device_put(the_hcd_pdev[i--]);
-			return retval;
-		}
-	}
-	for (i = 0; i < mod_data.num; i++) {
-		the_udc_pdev[i] = platform_device_alloc(gadget_name, i);
-		if (!the_udc_pdev[i]) {
-			i--;
-			while (i >= 0)
-				platform_device_put(the_udc_pdev[i--]);
-			goto err_alloc_udc;
-		}
-	}
-	for (i = 0; i < mod_data.num; i++) {
-		dum[i] = kzalloc(sizeof(struct dummy), GFP_KERNEL);
-		if (!dum[i]) {
-			retval = -ENOMEM;
-			goto err_add_pdata;
-		}
-		retval = platform_device_add_data(the_hcd_pdev[i], &dum[i],
-				sizeof(void *));
-		if (retval)
-			goto err_add_pdata;
-		retval = platform_device_add_data(the_udc_pdev[i], &dum[i],
-				sizeof(void *));
-		if (retval)
-			goto err_add_pdata;
-	}
-
-	retval = platform_driver_register(&dummy_hcd_driver);
-	if (retval < 0)
-		goto err_add_pdata;
-	retval = platform_driver_register(&dummy_udc_driver);
-	if (retval < 0)
-		goto err_register_udc_driver;
-
-	for (i = 0; i < mod_data.num; i++) {
-		retval = platform_device_add(the_hcd_pdev[i]);
-		if (retval < 0) {
-			i--;
-			while (i >= 0)
-				platform_device_del(the_hcd_pdev[i--]);
-			goto err_add_hcd;
-		}
-	}
-	for (i = 0; i < mod_data.num; i++) {
-		if (!dum[i]->hs_hcd ||
-				(!dum[i]->ss_hcd && mod_data.is_super_speed)) {
-			/*
-			 * The hcd was added successfully but its probe
-			 * function failed for some reason.
-			 */
-			retval = -EINVAL;
-			goto err_add_udc;
-		}
-	}
-
-	for (i = 0; i < mod_data.num; i++) {
-		retval = platform_device_add(the_udc_pdev[i]);
-		if (retval < 0) {
-			i--;
-			while (i >= 0)
-				platform_device_del(the_udc_pdev[i]);
-			goto err_add_udc;
-		}
-	}
-
-	for (i = 0; i < mod_data.num; i++) {
-		if (!platform_get_drvdata(the_udc_pdev[i])) {
-			/*
-			 * The udc was added successfully but its probe
-			 * function failed for some reason.
-			 */
-			retval = -EINVAL;
-			goto err_probe_udc;
-		}
-	}
-	return retval;
-
-err_probe_udc:
-	for (i = 0; i < mod_data.num; i++)
-		platform_device_del(the_udc_pdev[i]);
-err_add_udc:
-	for (i = 0; i < mod_data.num; i++)
-		platform_device_del(the_hcd_pdev[i]);
-err_add_hcd:
-	platform_driver_unregister(&dummy_udc_driver);
-err_register_udc_driver:
-	platform_driver_unregister(&dummy_hcd_driver);
-err_add_pdata:
-	for (i = 0; i < mod_data.num; i++)
-		kfree(dum[i]);
-	for (i = 0; i < mod_data.num; i++)
-		platform_device_put(the_udc_pdev[i]);
-err_alloc_udc:
-	for (i = 0; i < mod_data.num; i++)
-		platform_device_put(the_hcd_pdev[i]);
-	return retval;
-}
-module_init(init);
-
-static void __exit cleanup(void)
-{
-	int i;
-
-	for (i = 0; i < mod_data.num; i++) {
-		struct dummy *dum;
-
-		dum = *((void **)dev_get_platdata(&the_udc_pdev[i]->dev));
-
-		platform_device_unregister(the_udc_pdev[i]);
-		platform_device_unregister(the_hcd_pdev[i]);
-		kfree(dum);
-	}
-	platform_driver_unregister(&dummy_udc_driver);
-	platform_driver_unregister(&dummy_hcd_driver);
-}
-module_exit(cleanup);