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, 2710 deletions

diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
deleted file mode 100644
index 059cfe527982..000000000000
--- a/drivers/usb/gadget/net2272.c
+++ /dev/null
@@ -1,2710 +0,0 @@
-/*
- * 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/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/prefetch.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/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",
-};
-
-#ifdef CONFIG_USB_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 bool 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 = usb_endpoint_maxp(desc) & 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);
-
-	usb_ep_set_maxpacket_limit(&ep->ep, ~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;
-
-	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 && ep->dma)
-		usb_gadget_unmap_request(&dev->gadget, &req->req,
-				ep->is_in);
-
-	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) {
-		status = usb_gadget_map_request(&dev->gadget, _req,
-				ep->is_in);
-		if (status)
-			return status;
-	}
-
-	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))
-		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 *_gadget,
-		struct usb_gadget_driver *driver);
-static int net2272_stop(struct usb_gadget *_gadget,
-		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,
-	.udc_start	= net2272_start,
-	.udc_stop	= net2272_stop,
-};
-
-/*---------------------------------------------------------------------------*/
-
-static ssize_t
-registers_show(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_RO(registers);
-
-/*---------------------------------------------------------------------------*/
-
-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 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);
-	}
-	usb_ep_set_maxpacket_limit(&dev->ep[0].ep, 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 *_gadget,
-		struct usb_gadget_driver *driver)
-{
-	struct net2272 *dev;
-	unsigned i;
-
-	if (!driver || !driver->setup ||
-	    driver->max_speed != USB_SPEED_HIGH)
-		return -EINVAL;
-
-	dev = container_of(_gadget, struct net2272, gadget);
-
-	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;
-
-	/* ... 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 *_gadget,
-		struct usb_gadget_driver *driver)
-{
-	struct net2272 *dev;
-	unsigned long flags;
-
-	dev = container_of(_gadget, struct net2272, gadget);
-
-	spin_lock_irqsave(&dev->lock, flags);
-	stop_activity(dev, driver);
-	spin_unlock_irqrestore(&dev->lock, flags);
-
-	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 << 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 : NULL);
-
-	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\n",
-				usb_speed_string(dev->gadget.speed));
-		}
-
-		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)) {
-		spin_unlock(&dev->lock);
-		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
-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_remove_file(dev->dev, &dev_attr_registers);
-
-	dev_info(dev->dev, "unbind\n");
-}
-
-static struct net2272 *net2272_probe_init(struct device *dev, unsigned int irq)
-{
-	struct net2272 *ret;
-
-	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.max_speed = USB_SPEED_HIGH;
-
-	/* the "gadget" abstracts/virtualizes the controller */
-	ret->gadget.name = driver_name;
-
-	return ret;
-}
-
-static int
-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);
-
-	ret = device_create_file(dev->dev, &dev_attr_registers);
-	if (ret)
-		goto err_irq;
-
-	ret = usb_add_gadget_udc_release(dev->dev, &dev->gadget,
-			net2272_gadget_release);
-	if (ret)
-		goto err_add_udc;
-
-	return 0;
-
-err_add_udc:
-	device_remove_file(dev->dev, &dev_attr_registers);
- 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
-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
-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
-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
-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
-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
-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 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   = 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
-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 ");
-
-	return 0;
-
- err_io:
-	iounmap(dev->base_addr);
- err_req:
-	release_mem_region(base, len);
- err:
-	return ret;
-}
-
-static int
-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  = 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");