Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1483 insertions, 0 deletions

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
new file mode 100644
index 000000000000..a047bc392983
--- /dev/null
+++ b/drivers/usb/core/devio.c
@@ -0,0 +1,1483 @@
+/*****************************************************************************/
+
+/*
+ *      devio.c  --  User space communication with USB devices.
+ *
+ *      Copyright (C) 1999-2000  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *      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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  $Id: devio.c,v 1.7 2000/02/01 17:28:48 fliegl Exp $
+ *
+ *  This file implements the usbfs/x/y files, where
+ *  x is the bus number and y the device number.
+ *
+ *  It allows user space programs/"drivers" to communicate directly
+ *  with USB devices without intervening kernel driver.
+ *
+ *  Revision history
+ *    22.12.1999   0.1   Initial release (split from proc_usb.c)
+ *    04.01.2000   0.2   Turned into its own filesystem
+ */
+
+/*****************************************************************************/
+
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/signal.h>
+#include <linux/poll.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usbdevice_fs.h>
+#include <asm/uaccess.h>
+#include <asm/byteorder.h>
+#include <linux/moduleparam.h>
+
+#include "hcd.h"	/* for usbcore internals */
+#include "usb.h"
+
+struct async {
+	struct list_head asynclist;
+	struct dev_state *ps;
+	struct task_struct *task;
+	unsigned int signr;
+	unsigned int ifnum;
+	void __user *userbuffer;
+	void __user *userurb;
+	struct urb *urb;
+};
+
+static int usbfs_snoop = 0;
+module_param (usbfs_snoop, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC (usbfs_snoop, "true to log all usbfs traffic");
+
+#define snoop(dev, format, arg...)				\
+	do {							\
+		if (usbfs_snoop)				\
+			dev_info( dev , format , ## arg);	\
+	} while (0)
+
+
+#define	MAX_USBFS_BUFFER_SIZE	16384
+
+static inline int connected (struct usb_device *dev)
+{
+	return dev->state != USB_STATE_NOTATTACHED;
+}
+
+static loff_t usbdev_lseek(struct file *file, loff_t offset, int orig)
+{
+	loff_t ret;
+
+	lock_kernel();
+
+	switch (orig) {
+	case 0:
+		file->f_pos = offset;
+		ret = file->f_pos;
+		break;
+	case 1:
+		file->f_pos += offset;
+		ret = file->f_pos;
+		break;
+	case 2:
+	default:
+		ret = -EINVAL;
+	}
+
+	unlock_kernel();
+	return ret;
+}
+
+static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
+{
+	struct dev_state *ps = (struct dev_state *)file->private_data;
+	struct usb_device *dev = ps->dev;
+	ssize_t ret = 0;
+	unsigned len;
+	loff_t pos;
+	int i;
+
+	pos = *ppos;
+	usb_lock_device(dev);
+	if (!connected(dev)) {
+		ret = -ENODEV;
+		goto err;
+	} else if (pos < 0) {
+		ret = -EINVAL;
+		goto err;
+	}
+
+	if (pos < sizeof(struct usb_device_descriptor)) {
+		struct usb_device_descriptor *desc = kmalloc(sizeof(*desc), GFP_KERNEL);
+		if (!desc) {
+			ret = -ENOMEM;
+			goto err;
+		}
+		memcpy(desc, &dev->descriptor, sizeof(dev->descriptor));
+		le16_to_cpus(&desc->bcdUSB);
+		le16_to_cpus(&desc->idVendor);
+		le16_to_cpus(&desc->idProduct);
+		le16_to_cpus(&desc->bcdDevice);
+
+		len = sizeof(struct usb_device_descriptor) - pos;
+		if (len > nbytes)
+			len = nbytes;
+		if (copy_to_user(buf, ((char *)desc) + pos, len)) {
+			kfree(desc);
+			ret = -EFAULT;
+			goto err;
+		}
+		kfree(desc);
+
+		*ppos += len;
+		buf += len;
+		nbytes -= len;
+		ret += len;
+	}
+
+	pos = sizeof(struct usb_device_descriptor);
+	for (i = 0; nbytes && i < dev->descriptor.bNumConfigurations; i++) {
+		struct usb_config_descriptor *config =
+			(struct usb_config_descriptor *)dev->rawdescriptors[i];
+		unsigned int length = le16_to_cpu(config->wTotalLength);
+
+		if (*ppos < pos + length) {
+
+			/* The descriptor may claim to be longer than it
+			 * really is.  Here is the actual allocated length. */
+			unsigned alloclen =
+				le16_to_cpu(dev->config[i].desc.wTotalLength);
+
+			len = length - (*ppos - pos);
+			if (len > nbytes)
+				len = nbytes;
+
+			/* Simply don't write (skip over) unallocated parts */
+			if (alloclen > (*ppos - pos)) {
+				alloclen -= (*ppos - pos);
+				if (copy_to_user(buf,
+				    dev->rawdescriptors[i] + (*ppos - pos),
+				    min(len, alloclen))) {
+					ret = -EFAULT;
+					goto err;
+				}
+			}
+
+			*ppos += len;
+			buf += len;
+			nbytes -= len;
+			ret += len;
+		}
+
+		pos += length;
+	}
+
+err:
+	usb_unlock_device(dev);
+	return ret;
+}
+
+/*
+ * async list handling
+ */
+
+static struct async *alloc_async(unsigned int numisoframes)
+{
+        unsigned int assize = sizeof(struct async) + numisoframes * sizeof(struct usb_iso_packet_descriptor);
+        struct async *as = kmalloc(assize, GFP_KERNEL);
+        if (!as)
+                return NULL;
+        memset(as, 0, assize);
+	as->urb = usb_alloc_urb(numisoframes, GFP_KERNEL);
+	if (!as->urb) {
+		kfree(as);
+		return NULL;
+	}
+        return as;
+}
+
+static void free_async(struct async *as)
+{
+        if (as->urb->transfer_buffer)
+                kfree(as->urb->transfer_buffer);
+        if (as->urb->setup_packet)
+                kfree(as->urb->setup_packet);
+	usb_free_urb(as->urb);
+        kfree(as);
+}
+
+static inline void async_newpending(struct async *as)
+{
+        struct dev_state *ps = as->ps;
+        unsigned long flags;
+        
+        spin_lock_irqsave(&ps->lock, flags);
+        list_add_tail(&as->asynclist, &ps->async_pending);
+        spin_unlock_irqrestore(&ps->lock, flags);
+}
+
+static inline void async_removepending(struct async *as)
+{
+        struct dev_state *ps = as->ps;
+        unsigned long flags;
+        
+        spin_lock_irqsave(&ps->lock, flags);
+        list_del_init(&as->asynclist);
+        spin_unlock_irqrestore(&ps->lock, flags);
+}
+
+static inline struct async *async_getcompleted(struct dev_state *ps)
+{
+        unsigned long flags;
+        struct async *as = NULL;
+
+        spin_lock_irqsave(&ps->lock, flags);
+        if (!list_empty(&ps->async_completed)) {
+                as = list_entry(ps->async_completed.next, struct async, asynclist);
+                list_del_init(&as->asynclist);
+        }
+        spin_unlock_irqrestore(&ps->lock, flags);
+        return as;
+}
+
+static inline struct async *async_getpending(struct dev_state *ps, void __user *userurb)
+{
+        unsigned long flags;
+        struct async *as;
+
+        spin_lock_irqsave(&ps->lock, flags);
+	list_for_each_entry(as, &ps->async_pending, asynclist)
+		if (as->userurb == userurb) {
+			list_del_init(&as->asynclist);
+			spin_unlock_irqrestore(&ps->lock, flags);
+			return as;
+		}
+        spin_unlock_irqrestore(&ps->lock, flags);
+        return NULL;
+}
+
+static void async_completed(struct urb *urb, struct pt_regs *regs)
+{
+        struct async *as = (struct async *)urb->context;
+        struct dev_state *ps = as->ps;
+	struct siginfo sinfo;
+
+        spin_lock(&ps->lock);
+        list_move_tail(&as->asynclist, &ps->async_completed);
+        spin_unlock(&ps->lock);
+	if (as->signr) {
+		sinfo.si_signo = as->signr;
+		sinfo.si_errno = as->urb->status;
+		sinfo.si_code = SI_ASYNCIO;
+		sinfo.si_addr = as->userurb;
+		send_sig_info(as->signr, &sinfo, as->task);
+	}
+        wake_up(&ps->wait);
+}
+
+static void destroy_async (struct dev_state *ps, struct list_head *list)
+{
+	struct async *as;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ps->lock, flags);
+	while (!list_empty(list)) {
+		as = list_entry(list->next, struct async, asynclist);
+		list_del_init(&as->asynclist);
+
+		/* drop the spinlock so the completion handler can run */
+		spin_unlock_irqrestore(&ps->lock, flags);
+		usb_kill_urb(as->urb);
+		spin_lock_irqsave(&ps->lock, flags);
+	}
+	spin_unlock_irqrestore(&ps->lock, flags);
+	as = async_getcompleted(ps);
+	while (as) {
+		free_async(as);
+		as = async_getcompleted(ps);
+	}
+}
+
+static void destroy_async_on_interface (struct dev_state *ps, unsigned int ifnum)
+{
+	struct list_head *p, *q, hitlist;
+	unsigned long flags;
+
+	INIT_LIST_HEAD(&hitlist);
+	spin_lock_irqsave(&ps->lock, flags);
+	list_for_each_safe(p, q, &ps->async_pending)
+		if (ifnum == list_entry(p, struct async, asynclist)->ifnum)
+			list_move_tail(p, &hitlist);
+	spin_unlock_irqrestore(&ps->lock, flags);
+	destroy_async(ps, &hitlist);
+}
+
+static inline void destroy_all_async(struct dev_state *ps)
+{
+	        destroy_async(ps, &ps->async_pending);
+}
+
+/*
+ * interface claims are made only at the request of user level code,
+ * which can also release them (explicitly or by closing files).
+ * they're also undone when devices disconnect.
+ */
+
+static int driver_probe (struct usb_interface *intf,
+			 const struct usb_device_id *id)
+{
+	return -ENODEV;
+}
+
+static void driver_disconnect(struct usb_interface *intf)
+{
+	struct dev_state *ps = usb_get_intfdata (intf);
+	unsigned int ifnum = intf->altsetting->desc.bInterfaceNumber;
+
+	if (!ps)
+		return;
+
+	/* NOTE:  this relies on usbcore having canceled and completed
+	 * all pending I/O requests; 2.6 does that.
+	 */
+
+	if (likely(ifnum < 8*sizeof(ps->ifclaimed)))
+		clear_bit(ifnum, &ps->ifclaimed);
+	else
+		warn("interface number %u out of range", ifnum);
+
+	usb_set_intfdata (intf, NULL);
+
+	/* force async requests to complete */
+	destroy_async_on_interface(ps, ifnum);
+}
+
+struct usb_driver usbfs_driver = {
+	.owner =	THIS_MODULE,
+	.name =		"usbfs",
+	.probe =	driver_probe,
+	.disconnect =	driver_disconnect,
+};
+
+static int claimintf(struct dev_state *ps, unsigned int ifnum)
+{
+	struct usb_device *dev = ps->dev;
+	struct usb_interface *intf;
+	int err;
+
+	if (ifnum >= 8*sizeof(ps->ifclaimed))
+		return -EINVAL;
+	/* already claimed */
+	if (test_bit(ifnum, &ps->ifclaimed))
+		return 0;
+
+	/* lock against other changes to driver bindings */
+	down_write(&usb_bus_type.subsys.rwsem);
+	intf = usb_ifnum_to_if(dev, ifnum);
+	if (!intf)
+		err = -ENOENT;
+	else
+		err = usb_driver_claim_interface(&usbfs_driver, intf, ps);
+	up_write(&usb_bus_type.subsys.rwsem);
+	if (err == 0)
+		set_bit(ifnum, &ps->ifclaimed);
+	return err;
+}
+
+static int releaseintf(struct dev_state *ps, unsigned int ifnum)
+{
+	struct usb_device *dev;
+	struct usb_interface *intf;
+	int err;
+
+	err = -EINVAL;
+	if (ifnum >= 8*sizeof(ps->ifclaimed))
+		return err;
+	dev = ps->dev;
+	/* lock against other changes to driver bindings */
+	down_write(&usb_bus_type.subsys.rwsem);
+	intf = usb_ifnum_to_if(dev, ifnum);
+	if (!intf)
+		err = -ENOENT;
+	else if (test_and_clear_bit(ifnum, &ps->ifclaimed)) {
+		usb_driver_release_interface(&usbfs_driver, intf);
+		err = 0;
+	}
+	up_write(&usb_bus_type.subsys.rwsem);
+	return err;
+}
+
+static int checkintf(struct dev_state *ps, unsigned int ifnum)
+{
+	if (ps->dev->state != USB_STATE_CONFIGURED)
+		return -EHOSTUNREACH;
+	if (ifnum >= 8*sizeof(ps->ifclaimed))
+		return -EINVAL;
+	if (test_bit(ifnum, &ps->ifclaimed))
+		return 0;
+	/* if not yet claimed, claim it for the driver */
+	dev_warn(&ps->dev->dev, "usbfs: process %d (%s) did not claim interface %u before use\n",
+	       current->pid, current->comm, ifnum);
+	return claimintf(ps, ifnum);
+}
+
+static int findintfep(struct usb_device *dev, unsigned int ep)
+{
+	unsigned int i, j, e;
+        struct usb_interface *intf;
+	struct usb_host_interface *alts;
+	struct usb_endpoint_descriptor *endpt;
+
+	if (ep & ~(USB_DIR_IN|0xf))
+		return -EINVAL;
+	if (!dev->actconfig)
+		return -ESRCH;
+	for (i = 0; i < dev->actconfig->desc.bNumInterfaces; i++) {
+		intf = dev->actconfig->interface[i];
+		for (j = 0; j < intf->num_altsetting; j++) {
+                        alts = &intf->altsetting[j];
+			for (e = 0; e < alts->desc.bNumEndpoints; e++) {
+				endpt = &alts->endpoint[e].desc;
+				if (endpt->bEndpointAddress == ep)
+					return alts->desc.bInterfaceNumber;
+			}
+		}
+	}
+	return -ENOENT; 
+}
+
+static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, unsigned int index)
+{
+	int ret = 0;
+
+	if (ps->dev->state != USB_STATE_CONFIGURED)
+		return -EHOSTUNREACH;
+	if (USB_TYPE_VENDOR == (USB_TYPE_MASK & requesttype))
+		return 0;
+
+	index &= 0xff;
+	switch (requesttype & USB_RECIP_MASK) {
+	case USB_RECIP_ENDPOINT:
+		if ((ret = findintfep(ps->dev, index)) >= 0)
+			ret = checkintf(ps, ret);
+		break;
+
+	case USB_RECIP_INTERFACE:
+		ret = checkintf(ps, index);
+		break;
+	}
+	return ret;
+}
+
+/*
+ * file operations
+ */
+static int usbdev_open(struct inode *inode, struct file *file)
+{
+	struct usb_device *dev;
+	struct dev_state *ps;
+	int ret;
+
+	/* 
+	 * no locking necessary here, as chrdev_open has the kernel lock
+	 * (still acquire the kernel lock for safety)
+	 */
+	ret = -ENOMEM;
+	if (!(ps = kmalloc(sizeof(struct dev_state), GFP_KERNEL)))
+		goto out_nolock;
+
+	lock_kernel();
+	ret = -ENOENT;
+	dev = usb_get_dev(inode->u.generic_ip);
+	if (!dev) {
+		kfree(ps);
+		goto out;
+	}
+	ret = 0;
+	ps->dev = dev;
+	ps->file = file;
+	spin_lock_init(&ps->lock);
+	INIT_LIST_HEAD(&ps->async_pending);
+	INIT_LIST_HEAD(&ps->async_completed);
+	init_waitqueue_head(&ps->wait);
+	ps->discsignr = 0;
+	ps->disctask = current;
+	ps->disccontext = NULL;
+	ps->ifclaimed = 0;
+	wmb();
+	list_add_tail(&ps->list, &dev->filelist);
+	file->private_data = ps;
+ out:
+	unlock_kernel();
+ out_nolock:
+        return ret;
+}
+
+static int usbdev_release(struct inode *inode, struct file *file)
+{
+	struct dev_state *ps = (struct dev_state *)file->private_data;
+	struct usb_device *dev = ps->dev;
+	unsigned int ifnum;
+
+	usb_lock_device(dev);
+	list_del_init(&ps->list);
+	for (ifnum = 0; ps->ifclaimed && ifnum < 8*sizeof(ps->ifclaimed);
+			ifnum++) {
+		if (test_bit(ifnum, &ps->ifclaimed))
+			releaseintf(ps, ifnum);
+	}
+	destroy_all_async(ps);
+	usb_unlock_device(dev);
+	usb_put_dev(dev);
+	ps->dev = NULL;
+	kfree(ps);
+        return 0;
+}
+
+static int proc_control(struct dev_state *ps, void __user *arg)
+{
+	struct usb_device *dev = ps->dev;
+	struct usbdevfs_ctrltransfer ctrl;
+	unsigned int tmo;
+	unsigned char *tbuf;
+	int i, j, ret;
+
+	if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
+		return -EFAULT;
+	if ((ret = check_ctrlrecip(ps, ctrl.bRequestType, ctrl.wIndex)))
+		return ret;
+	if (ctrl.wLength > PAGE_SIZE)
+		return -EINVAL;
+	if (!(tbuf = (unsigned char *)__get_free_page(GFP_KERNEL)))
+		return -ENOMEM;
+	tmo = ctrl.timeout;
+	if (ctrl.bRequestType & 0x80) {
+		if (ctrl.wLength && !access_ok(VERIFY_WRITE, ctrl.data, ctrl.wLength)) {
+			free_page((unsigned long)tbuf);
+			return -EINVAL;
+		}
+		snoop(&dev->dev, "control read: bRequest=%02x bRrequestType=%02x wValue=%04x wIndex=%04x\n", 
+			ctrl.bRequest, ctrl.bRequestType, ctrl.wValue, ctrl.wIndex);
+
+		usb_unlock_device(dev);
+		i = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ctrl.bRequest, ctrl.bRequestType,
+				       ctrl.wValue, ctrl.wIndex, tbuf, ctrl.wLength, tmo);
+		usb_lock_device(dev);
+		if ((i > 0) && ctrl.wLength) {
+			if (usbfs_snoop) {
+				dev_info(&dev->dev, "control read: data ");
+				for (j = 0; j < ctrl.wLength; ++j)
+					printk ("%02x ", (unsigned char)(tbuf)[j]);
+				printk("\n");
+			}
+			if (copy_to_user(ctrl.data, tbuf, ctrl.wLength)) {
+				free_page((unsigned long)tbuf);
+				return -EFAULT;
+			}
+		}
+	} else {
+		if (ctrl.wLength) {
+			if (copy_from_user(tbuf, ctrl.data, ctrl.wLength)) {
+				free_page((unsigned long)tbuf);
+				return -EFAULT;
+			}
+		}
+		snoop(&dev->dev, "control write: bRequest=%02x bRrequestType=%02x wValue=%04x wIndex=%04x\n", 
+			ctrl.bRequest, ctrl.bRequestType, ctrl.wValue, ctrl.wIndex);
+		if (usbfs_snoop) {
+			dev_info(&dev->dev, "control write: data: ");
+			for (j = 0; j < ctrl.wLength; ++j)
+				printk ("%02x ", (unsigned char)(tbuf)[j]);
+			printk("\n");
+		}
+		usb_unlock_device(dev);
+		i = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ctrl.bRequest, ctrl.bRequestType,
+				       ctrl.wValue, ctrl.wIndex, tbuf, ctrl.wLength, tmo);
+		usb_lock_device(dev);
+	}
+	free_page((unsigned long)tbuf);
+	if (i<0 && i != -EPIPE) {
+		dev_printk(KERN_DEBUG, &dev->dev, "usbfs: USBDEVFS_CONTROL "
+			   "failed cmd %s rqt %u rq %u len %u ret %d\n",
+			   current->comm, ctrl.bRequestType, ctrl.bRequest,
+			   ctrl.wLength, i);
+	}
+	return i;
+}
+
+static int proc_bulk(struct dev_state *ps, void __user *arg)
+{
+	struct usb_device *dev = ps->dev;
+	struct usbdevfs_bulktransfer bulk;
+	unsigned int tmo, len1, pipe;
+	int len2;
+	unsigned char *tbuf;
+	int i, ret;
+
+	if (copy_from_user(&bulk, arg, sizeof(bulk)))
+		return -EFAULT;
+	if ((ret = findintfep(ps->dev, bulk.ep)) < 0)
+		return ret;
+	if ((ret = checkintf(ps, ret)))
+		return ret;
+	if (bulk.ep & USB_DIR_IN)
+		pipe = usb_rcvbulkpipe(dev, bulk.ep & 0x7f);
+	else
+		pipe = usb_sndbulkpipe(dev, bulk.ep & 0x7f);
+	if (!usb_maxpacket(dev, pipe, !(bulk.ep & USB_DIR_IN)))
+		return -EINVAL;
+	len1 = bulk.len;
+	if (len1 > MAX_USBFS_BUFFER_SIZE)
+		return -EINVAL;
+	if (!(tbuf = kmalloc(len1, GFP_KERNEL)))
+		return -ENOMEM;
+	tmo = bulk.timeout;
+	if (bulk.ep & 0x80) {
+		if (len1 && !access_ok(VERIFY_WRITE, bulk.data, len1)) {
+			kfree(tbuf);
+			return -EINVAL;
+		}
+		usb_unlock_device(dev);
+		i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
+		usb_lock_device(dev);
+		if (!i && len2) {
+			if (copy_to_user(bulk.data, tbuf, len2)) {
+				kfree(tbuf);
+				return -EFAULT;
+			}
+		}
+	} else {
+		if (len1) {
+			if (copy_from_user(tbuf, bulk.data, len1)) {
+				kfree(tbuf);
+				return -EFAULT;
+			}
+		}
+		usb_unlock_device(dev);
+		i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
+		usb_lock_device(dev);
+	}
+	kfree(tbuf);
+	if (i < 0)
+		return i;
+	return len2;
+}
+
+static int proc_resetep(struct dev_state *ps, void __user *arg)
+{
+	unsigned int ep;
+	int ret;
+
+	if (get_user(ep, (unsigned int __user *)arg))
+		return -EFAULT;
+	if ((ret = findintfep(ps->dev, ep)) < 0)
+		return ret;
+	if ((ret = checkintf(ps, ret)))
+		return ret;
+	usb_settoggle(ps->dev, ep & 0xf, !(ep & USB_DIR_IN), 0);
+	return 0;
+}
+
+static int proc_clearhalt(struct dev_state *ps, void __user *arg)
+{
+	unsigned int ep;
+	int pipe;
+	int ret;
+
+	if (get_user(ep, (unsigned int __user *)arg))
+		return -EFAULT;
+	if ((ret = findintfep(ps->dev, ep)) < 0)
+		return ret;
+	if ((ret = checkintf(ps, ret)))
+		return ret;
+	if (ep & USB_DIR_IN)
+                pipe = usb_rcvbulkpipe(ps->dev, ep & 0x7f);
+        else
+                pipe = usb_sndbulkpipe(ps->dev, ep & 0x7f);
+
+	return usb_clear_halt(ps->dev, pipe);
+}
+		
+
+static int proc_getdriver(struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_getdriver gd;
+	struct usb_interface *intf;
+	int ret;
+
+	if (copy_from_user(&gd, arg, sizeof(gd)))
+		return -EFAULT;
+	down_read(&usb_bus_type.subsys.rwsem);
+	intf = usb_ifnum_to_if(ps->dev, gd.interface);
+	if (!intf || !intf->dev.driver)
+		ret = -ENODATA;
+	else {
+		strncpy(gd.driver, intf->dev.driver->name,
+				sizeof(gd.driver));
+		ret = (copy_to_user(arg, &gd, sizeof(gd)) ? -EFAULT : 0);
+	}
+	up_read(&usb_bus_type.subsys.rwsem);
+	return ret;
+}
+
+static int proc_connectinfo(struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_connectinfo ci;
+
+	ci.devnum = ps->dev->devnum;
+	ci.slow = ps->dev->speed == USB_SPEED_LOW;
+	if (copy_to_user(arg, &ci, sizeof(ci)))
+		return -EFAULT;
+	return 0;
+}
+
+static int proc_resetdevice(struct dev_state *ps)
+{
+	return usb_reset_device(ps->dev);
+
+}
+
+static int proc_setintf(struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_setinterface setintf;
+	int ret;
+
+	if (copy_from_user(&setintf, arg, sizeof(setintf)))
+		return -EFAULT;
+	if ((ret = checkintf(ps, setintf.interface)))
+		return ret;
+	return usb_set_interface(ps->dev, setintf.interface,
+			setintf.altsetting);
+}
+
+static int proc_setconfig(struct dev_state *ps, void __user *arg)
+{
+	unsigned int u;
+	int status = 0;
+ 	struct usb_host_config *actconfig;
+
+	if (get_user(u, (unsigned int __user *)arg))
+		return -EFAULT;
+
+ 	actconfig = ps->dev->actconfig;
+ 
+ 	/* Don't touch the device if any interfaces are claimed.
+ 	 * It could interfere with other drivers' operations, and if
+	 * an interface is claimed by usbfs it could easily deadlock.
+	 */
+ 	if (actconfig) {
+ 		int i;
+ 
+ 		for (i = 0; i < actconfig->desc.bNumInterfaces; ++i) {
+ 			if (usb_interface_claimed(actconfig->interface[i])) {
+				dev_warn (&ps->dev->dev,
+					"usbfs: interface %d claimed "
+					"while '%s' sets config #%d\n",
+					actconfig->interface[i]
+						->cur_altsetting
+						->desc.bInterfaceNumber,
+					current->comm, u);
+#if 0	/* FIXME:  enable in 2.6.10 or so */
+ 				status = -EBUSY;
+				break;
+#endif
+			}
+ 		}
+ 	}
+
+	/* SET_CONFIGURATION is often abused as a "cheap" driver reset,
+	 * so avoid usb_set_configuration()'s kick to sysfs
+	 */
+	if (status == 0) {
+		if (actconfig && actconfig->desc.bConfigurationValue == u)
+			status = usb_reset_configuration(ps->dev);
+		else
+			status = usb_set_configuration(ps->dev, u);
+	}
+
+	return status;
+}
+
+
+static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
+			     struct usbdevfs_iso_packet_desc __user *iso_frame_desc,
+			     void __user *arg)
+{
+	struct usbdevfs_iso_packet_desc *isopkt = NULL;
+	struct usb_host_endpoint *ep;
+	struct async *as;
+	struct usb_ctrlrequest *dr = NULL;
+	unsigned int u, totlen, isofrmlen;
+	int ret, interval = 0, ifnum = -1;
+
+	if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP|USBDEVFS_URB_SHORT_NOT_OK|
+			   URB_NO_FSBR|URB_ZERO_PACKET))
+		return -EINVAL;
+	if (!uurb->buffer)
+		return -EINVAL;
+	if (uurb->signr != 0 && (uurb->signr < SIGRTMIN || uurb->signr > SIGRTMAX))
+		return -EINVAL;
+	if (!(uurb->type == USBDEVFS_URB_TYPE_CONTROL && (uurb->endpoint & ~USB_ENDPOINT_DIR_MASK) == 0)) {
+		if ((ifnum = findintfep(ps->dev, uurb->endpoint)) < 0)
+			return ifnum;
+		if ((ret = checkintf(ps, ifnum)))
+			return ret;
+	}
+	if ((uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0)
+		ep = ps->dev->ep_in [uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
+	else
+		ep = ps->dev->ep_out [uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
+	if (!ep)
+		return -ENOENT;
+	switch(uurb->type) {
+	case USBDEVFS_URB_TYPE_CONTROL:
+		if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+				!= USB_ENDPOINT_XFER_CONTROL)
+			return -EINVAL;
+		/* min 8 byte setup packet, max arbitrary */
+		if (uurb->buffer_length < 8 || uurb->buffer_length > PAGE_SIZE)
+			return -EINVAL;
+		if (!(dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL)))
+			return -ENOMEM;
+		if (copy_from_user(dr, uurb->buffer, 8)) {
+			kfree(dr);
+			return -EFAULT;
+		}
+		if (uurb->buffer_length < (le16_to_cpup(&dr->wLength) + 8)) {
+			kfree(dr);
+			return -EINVAL;
+		}
+		if ((ret = check_ctrlrecip(ps, dr->bRequestType, le16_to_cpup(&dr->wIndex)))) {
+			kfree(dr);
+			return ret;
+		}
+		uurb->endpoint = (uurb->endpoint & ~USB_ENDPOINT_DIR_MASK) | (dr->bRequestType & USB_ENDPOINT_DIR_MASK);
+		uurb->number_of_packets = 0;
+		uurb->buffer_length = le16_to_cpup(&dr->wLength);
+		uurb->buffer += 8;
+		if (!access_ok((uurb->endpoint & USB_DIR_IN) ?  VERIFY_WRITE : VERIFY_READ, uurb->buffer, uurb->buffer_length)) {
+			kfree(dr);
+			return -EFAULT;
+		}
+		break;
+
+	case USBDEVFS_URB_TYPE_BULK:
+		switch (ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+		case USB_ENDPOINT_XFER_CONTROL:
+		case USB_ENDPOINT_XFER_ISOC:
+			return -EINVAL;
+		/* allow single-shot interrupt transfers, at bogus rates */
+		}
+		uurb->number_of_packets = 0;
+		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
+			return -EINVAL;
+		if (!access_ok((uurb->endpoint & USB_DIR_IN) ? VERIFY_WRITE : VERIFY_READ, uurb->buffer, uurb->buffer_length))
+			return -EFAULT;
+		break;
+
+	case USBDEVFS_URB_TYPE_ISO:
+		/* arbitrary limit */
+		if (uurb->number_of_packets < 1 || uurb->number_of_packets > 128)
+			return -EINVAL;
+		if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+				!= USB_ENDPOINT_XFER_ISOC)
+			return -EINVAL;
+		interval = 1 << min (15, ep->desc.bInterval - 1);
+		isofrmlen = sizeof(struct usbdevfs_iso_packet_desc) * uurb->number_of_packets;
+		if (!(isopkt = kmalloc(isofrmlen, GFP_KERNEL)))
+			return -ENOMEM;
+		if (copy_from_user(isopkt, iso_frame_desc, isofrmlen)) {
+			kfree(isopkt);
+			return -EFAULT;
+		}
+		for (totlen = u = 0; u < uurb->number_of_packets; u++) {
+			if (isopkt[u].length > 1023) {
+				kfree(isopkt);
+				return -EINVAL;
+			}
+			totlen += isopkt[u].length;
+		}
+		if (totlen > 32768) {
+			kfree(isopkt);
+			return -EINVAL;
+		}
+		uurb->buffer_length = totlen;
+		break;
+
+	case USBDEVFS_URB_TYPE_INTERRUPT:
+		uurb->number_of_packets = 0;
+		if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+				!= USB_ENDPOINT_XFER_INT)
+			return -EINVAL;
+		if (ps->dev->speed == USB_SPEED_HIGH)
+			interval = 1 << min (15, ep->desc.bInterval - 1);
+		else
+			interval = ep->desc.bInterval;
+		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
+			return -EINVAL;
+		if (!access_ok((uurb->endpoint & USB_DIR_IN) ? VERIFY_WRITE : VERIFY_READ, uurb->buffer, uurb->buffer_length))
+			return -EFAULT;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	if (!(as = alloc_async(uurb->number_of_packets))) {
+		if (isopkt)
+			kfree(isopkt);
+		if (dr)
+			kfree(dr);
+		return -ENOMEM;
+	}
+	if (!(as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL))) {
+		if (isopkt)
+			kfree(isopkt);
+		if (dr)
+			kfree(dr);
+		free_async(as);
+		return -ENOMEM;
+	}
+        as->urb->dev = ps->dev;
+        as->urb->pipe = (uurb->type << 30) | __create_pipe(ps->dev, uurb->endpoint & 0xf) | (uurb->endpoint & USB_DIR_IN);
+        as->urb->transfer_flags = uurb->flags;
+	as->urb->transfer_buffer_length = uurb->buffer_length;
+	as->urb->setup_packet = (unsigned char*)dr;
+	as->urb->start_frame = uurb->start_frame;
+	as->urb->number_of_packets = uurb->number_of_packets;
+	as->urb->interval = interval;
+        as->urb->context = as;
+        as->urb->complete = async_completed;
+	for (totlen = u = 0; u < uurb->number_of_packets; u++) {
+		as->urb->iso_frame_desc[u].offset = totlen;
+		as->urb->iso_frame_desc[u].length = isopkt[u].length;
+		totlen += isopkt[u].length;
+	}
+	if (isopkt)
+		kfree(isopkt);
+	as->ps = ps;
+        as->userurb = arg;
+	if (uurb->endpoint & USB_DIR_IN)
+		as->userbuffer = uurb->buffer;
+	else
+		as->userbuffer = NULL;
+	as->signr = uurb->signr;
+	as->ifnum = ifnum;
+	as->task = current;
+	if (!(uurb->endpoint & USB_DIR_IN)) {
+		if (copy_from_user(as->urb->transfer_buffer, uurb->buffer, as->urb->transfer_buffer_length)) {
+			free_async(as);
+			return -EFAULT;
+		}
+	}
+        async_newpending(as);
+        if ((ret = usb_submit_urb(as->urb, GFP_KERNEL))) {
+		dev_printk(KERN_DEBUG, &ps->dev->dev, "usbfs: usb_submit_urb returned %d\n", ret);
+                async_removepending(as);
+                free_async(as);
+                return ret;
+        }
+        return 0;
+}
+
+static int proc_submiturb(struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_urb uurb;
+
+	if (copy_from_user(&uurb, arg, sizeof(uurb)))
+		return -EFAULT;
+
+	return proc_do_submiturb(ps, &uurb, (((struct usbdevfs_urb __user *)arg)->iso_frame_desc), arg);
+}
+
+static int proc_unlinkurb(struct dev_state *ps, void __user *arg)
+{
+	struct async *as;
+
+	as = async_getpending(ps, arg);
+	if (!as)
+		return -EINVAL;
+	usb_kill_urb(as->urb);
+	return 0;
+}
+
+static int processcompl(struct async *as, void __user * __user *arg)
+{
+	struct urb *urb = as->urb;
+	struct usbdevfs_urb __user *userurb = as->userurb;
+	void __user *addr = as->userurb;
+	unsigned int i;
+
+	if (as->userbuffer)
+		if (copy_to_user(as->userbuffer, urb->transfer_buffer, urb->transfer_buffer_length))
+			return -EFAULT;
+	if (put_user(urb->status, &userurb->status))
+		return -EFAULT;
+	if (put_user(urb->actual_length, &userurb->actual_length))
+		return -EFAULT;
+	if (put_user(urb->error_count, &userurb->error_count))
+		return -EFAULT;
+
+	if (!(usb_pipeisoc(urb->pipe)))
+		return 0;
+	for (i = 0; i < urb->number_of_packets; i++) {
+		if (put_user(urb->iso_frame_desc[i].actual_length,
+			     &userurb->iso_frame_desc[i].actual_length))
+			return -EFAULT;
+		if (put_user(urb->iso_frame_desc[i].status,
+			     &userurb->iso_frame_desc[i].status))
+			return -EFAULT;
+	}
+
+	free_async(as);
+
+	if (put_user(addr, (void __user * __user *)arg))
+		return -EFAULT;
+	return 0;
+}
+
+static struct async* reap_as(struct dev_state *ps)
+{
+        DECLARE_WAITQUEUE(wait, current);
+	struct async *as = NULL;
+	struct usb_device *dev = ps->dev;
+
+	add_wait_queue(&ps->wait, &wait);
+	for (;;) {
+		__set_current_state(TASK_INTERRUPTIBLE);
+		if ((as = async_getcompleted(ps)))
+			break;
+		if (signal_pending(current))
+			break;
+		usb_unlock_device(dev);
+		schedule();
+		usb_lock_device(dev);
+	}
+	remove_wait_queue(&ps->wait, &wait);
+	set_current_state(TASK_RUNNING);
+	return as;
+}
+
+static int proc_reapurb(struct dev_state *ps, void __user *arg)
+{
+	struct async *as = reap_as(ps);
+	if (as)
+		return processcompl(as, (void __user * __user *)arg);
+	if (signal_pending(current))
+		return -EINTR;
+	return -EIO;
+}
+
+static int proc_reapurbnonblock(struct dev_state *ps, void __user *arg)
+{
+	struct async *as;
+
+	if (!(as = async_getcompleted(ps)))
+		return -EAGAIN;
+	return processcompl(as, (void __user * __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+
+static int get_urb32(struct usbdevfs_urb *kurb,
+		     struct usbdevfs_urb32 __user *uurb)
+{
+	__u32  uptr;
+	if (get_user(kurb->type, &uurb->type) ||
+	    __get_user(kurb->endpoint, &uurb->endpoint) ||
+	    __get_user(kurb->status, &uurb->status) ||
+	    __get_user(kurb->flags, &uurb->flags) ||
+	    __get_user(kurb->buffer_length, &uurb->buffer_length) ||
+	    __get_user(kurb->actual_length, &uurb->actual_length) ||
+	    __get_user(kurb->start_frame, &uurb->start_frame) ||
+	    __get_user(kurb->number_of_packets, &uurb->number_of_packets) ||
+	    __get_user(kurb->error_count, &uurb->error_count) ||
+	    __get_user(kurb->signr, &uurb->signr))
+		return -EFAULT;
+
+	if (__get_user(uptr, &uurb->buffer))
+		return -EFAULT;
+	kurb->buffer = compat_ptr(uptr);
+	if (__get_user(uptr, &uurb->buffer))
+		return -EFAULT;
+	kurb->usercontext = compat_ptr(uptr);
+
+	return 0;
+}
+
+static int proc_submiturb_compat(struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_urb uurb;
+
+	if (get_urb32(&uurb,(struct usbdevfs_urb32 *)arg))
+		return -EFAULT;
+
+	return proc_do_submiturb(ps, &uurb, ((struct usbdevfs_urb __user *)arg)->iso_frame_desc, arg);
+}
+
+static int processcompl_compat(struct async *as, void __user * __user *arg)
+{
+	struct urb *urb = as->urb;
+	struct usbdevfs_urb32 __user *userurb = as->userurb;
+	void __user *addr = as->userurb;
+	unsigned int i;
+
+	if (as->userbuffer)
+		if (copy_to_user(as->userbuffer, urb->transfer_buffer, urb->transfer_buffer_length))
+			return -EFAULT;
+	if (put_user(urb->status, &userurb->status))
+		return -EFAULT;
+	if (put_user(urb->actual_length, &userurb->actual_length))
+		return -EFAULT;
+	if (put_user(urb->error_count, &userurb->error_count))
+		return -EFAULT;
+
+	if (!(usb_pipeisoc(urb->pipe)))
+		return 0;
+	for (i = 0; i < urb->number_of_packets; i++) {
+		if (put_user(urb->iso_frame_desc[i].actual_length,
+			     &userurb->iso_frame_desc[i].actual_length))
+			return -EFAULT;
+		if (put_user(urb->iso_frame_desc[i].status,
+			     &userurb->iso_frame_desc[i].status))
+			return -EFAULT;
+	}
+
+	free_async(as);
+	if (put_user((u32)(u64)addr, (u32 __user *)arg))
+		return -EFAULT;
+	return 0;
+}
+
+static int proc_reapurb_compat(struct dev_state *ps, void __user *arg)
+{
+	struct async *as = reap_as(ps);
+	if (as)
+		return processcompl_compat(as, (void __user * __user *)arg);
+	if (signal_pending(current))
+		return -EINTR;
+	return -EIO;
+}
+
+static int proc_reapurbnonblock_compat(struct dev_state *ps, void __user *arg)
+{
+	struct async *as;
+
+	printk("reapurbnblock\n");
+	if (!(as = async_getcompleted(ps)))
+		return -EAGAIN;
+	printk("reap got as %p\n", as);
+	return processcompl_compat(as, (void __user * __user *)arg);
+}
+
+#endif
+
+static int proc_disconnectsignal(struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_disconnectsignal ds;
+
+	if (copy_from_user(&ds, arg, sizeof(ds)))
+		return -EFAULT;
+	if (ds.signr != 0 && (ds.signr < SIGRTMIN || ds.signr > SIGRTMAX))
+		return -EINVAL;
+	ps->discsignr = ds.signr;
+	ps->disccontext = ds.context;
+	return 0;
+}
+
+static int proc_claiminterface(struct dev_state *ps, void __user *arg)
+{
+	unsigned int ifnum;
+
+	if (get_user(ifnum, (unsigned int __user *)arg))
+		return -EFAULT;
+	return claimintf(ps, ifnum);
+}
+
+static int proc_releaseinterface(struct dev_state *ps, void __user *arg)
+{
+	unsigned int ifnum;
+	int ret;
+
+	if (get_user(ifnum, (unsigned int __user *)arg))
+		return -EFAULT;
+	if ((ret = releaseintf(ps, ifnum)) < 0)
+		return ret;
+	destroy_async_on_interface (ps, ifnum);
+	return 0;
+}
+
+static int proc_ioctl (struct dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_ioctl	ctrl;
+	int			size;
+	void			*buf = NULL;
+	int			retval = 0;
+	struct usb_interface    *intf = NULL;
+	struct usb_driver       *driver = NULL;
+	int			i;
+
+	/* get input parameters and alloc buffer */
+	if (copy_from_user(&ctrl, arg, sizeof (ctrl)))
+		return -EFAULT;
+	if ((size = _IOC_SIZE (ctrl.ioctl_code)) > 0) {
+		if ((buf = kmalloc (size, GFP_KERNEL)) == NULL)
+			return -ENOMEM;
+		if ((_IOC_DIR(ctrl.ioctl_code) & _IOC_WRITE)) {
+			if (copy_from_user (buf, ctrl.data, size)) {
+				kfree (buf);
+				return -EFAULT;
+			}
+		} else {
+			memset (buf, 0, size);
+		}
+	}
+
+	if (!connected(ps->dev)) {
+		if (buf)
+			kfree(buf);
+		return -ENODEV;
+	}
+
+	if (ps->dev->state != USB_STATE_CONFIGURED)
+		retval = -EHOSTUNREACH;
+	else if (!(intf = usb_ifnum_to_if (ps->dev, ctrl.ifno)))
+               retval = -EINVAL;
+	else switch (ctrl.ioctl_code) {
+
+	/* disconnect kernel driver from interface */
+	case USBDEVFS_DISCONNECT:
+
+		/* don't allow the user to unbind the hub driver from
+		 * a hub with children to manage */
+		for (i = 0; i < ps->dev->maxchild; ++i) {
+			if (ps->dev->children[i])
+				retval = -EBUSY;
+		}
+		if (retval)
+			break;
+
+		down_write(&usb_bus_type.subsys.rwsem);
+		if (intf->dev.driver) {
+			driver = to_usb_driver(intf->dev.driver);
+			dev_dbg (&intf->dev, "disconnect by usbfs\n");
+			usb_driver_release_interface(driver, intf);
+		} else
+			retval = -ENODATA;
+		up_write(&usb_bus_type.subsys.rwsem);
+		break;
+
+	/* let kernel drivers try to (re)bind to the interface */
+	case USBDEVFS_CONNECT:
+		usb_unlock_device(ps->dev);
+		usb_lock_all_devices();
+		bus_rescan_devices(intf->dev.bus);
+		usb_unlock_all_devices();
+		usb_lock_device(ps->dev);
+		break;
+
+	/* talk directly to the interface's driver */
+	default:
+		down_read(&usb_bus_type.subsys.rwsem);
+		if (intf->dev.driver)
+			driver = to_usb_driver(intf->dev.driver);
+		if (driver == NULL || driver->ioctl == NULL) {
+			retval = -ENOTTY;
+		} else {
+			retval = driver->ioctl (intf, ctrl.ioctl_code, buf);
+			if (retval == -ENOIOCTLCMD)
+				retval = -ENOTTY;
+		}
+		up_read(&usb_bus_type.subsys.rwsem);
+	}
+
+	/* cleanup and return */
+	if (retval >= 0
+			&& (_IOC_DIR (ctrl.ioctl_code) & _IOC_READ) != 0
+			&& size > 0
+			&& copy_to_user (ctrl.data, buf, size) != 0)
+		retval = -EFAULT;
+	if (buf != NULL)
+		kfree (buf);
+	return retval;
+}
+
+/*
+ * NOTE:  All requests here that have interface numbers as parameters
+ * are assuming that somehow the configuration has been prevented from
+ * changing.  But there's no mechanism to ensure that...
+ */
+static int usbdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct dev_state *ps = (struct dev_state *)file->private_data;
+	struct usb_device *dev = ps->dev;
+	void __user *p = (void __user *)arg;
+	int ret = -ENOTTY;
+
+	if (!(file->f_mode & FMODE_WRITE))
+		return -EPERM;
+	usb_lock_device(dev);
+	if (!connected(dev)) {
+		usb_unlock_device(dev);
+		return -ENODEV;
+	}
+
+	switch (cmd) {
+	case USBDEVFS_CONTROL:
+		snoop(&dev->dev, "%s: CONTROL\n", __FUNCTION__);
+		ret = proc_control(ps, p);
+		if (ret >= 0)
+			inode->i_mtime = CURRENT_TIME;
+		break;
+
+	case USBDEVFS_BULK:
+		snoop(&dev->dev, "%s: BULK\n", __FUNCTION__);
+		ret = proc_bulk(ps, p);
+		if (ret >= 0)
+			inode->i_mtime = CURRENT_TIME;
+		break;
+
+	case USBDEVFS_RESETEP:
+		snoop(&dev->dev, "%s: RESETEP\n", __FUNCTION__);
+		ret = proc_resetep(ps, p);
+		if (ret >= 0)
+			inode->i_mtime = CURRENT_TIME;
+		break;
+
+	case USBDEVFS_RESET:
+		snoop(&dev->dev, "%s: RESET\n", __FUNCTION__);
+		ret = proc_resetdevice(ps);
+		break;
+
+	case USBDEVFS_CLEAR_HALT:
+		snoop(&dev->dev, "%s: CLEAR_HALT\n", __FUNCTION__);
+		ret = proc_clearhalt(ps, p);
+		if (ret >= 0)
+			inode->i_mtime = CURRENT_TIME;
+		break;
+
+	case USBDEVFS_GETDRIVER:
+		snoop(&dev->dev, "%s: GETDRIVER\n", __FUNCTION__);
+		ret = proc_getdriver(ps, p);
+		break;
+
+	case USBDEVFS_CONNECTINFO:
+		snoop(&dev->dev, "%s: CONNECTINFO\n", __FUNCTION__);
+		ret = proc_connectinfo(ps, p);
+		break;
+
+	case USBDEVFS_SETINTERFACE:
+		snoop(&dev->dev, "%s: SETINTERFACE\n", __FUNCTION__);
+		ret = proc_setintf(ps, p);
+		break;
+
+	case USBDEVFS_SETCONFIGURATION:
+		snoop(&dev->dev, "%s: SETCONFIGURATION\n", __FUNCTION__);
+		ret = proc_setconfig(ps, p);
+		break;
+
+	case USBDEVFS_SUBMITURB:
+		snoop(&dev->dev, "%s: SUBMITURB\n", __FUNCTION__);
+		ret = proc_submiturb(ps, p);
+		if (ret >= 0)
+			inode->i_mtime = CURRENT_TIME;
+		break;
+
+#ifdef CONFIG_COMPAT
+
+	case USBDEVFS_SUBMITURB32:
+		snoop(&dev->dev, "%s: SUBMITURB32\n", __FUNCTION__);
+		ret = proc_submiturb_compat(ps, p);
+		if (ret >= 0)
+			inode->i_mtime = CURRENT_TIME;
+		break;
+
+	case USBDEVFS_REAPURB32:
+		snoop(&dev->dev, "%s: REAPURB32\n", __FUNCTION__);
+		ret = proc_reapurb_compat(ps, p);
+		break;
+
+	case USBDEVFS_REAPURBNDELAY32:
+		snoop(&dev->dev, "%s: REAPURBDELAY32\n", __FUNCTION__);
+		ret = proc_reapurbnonblock_compat(ps, p);
+		break;
+
+#endif
+
+	case USBDEVFS_DISCARDURB:
+		snoop(&dev->dev, "%s: DISCARDURB\n", __FUNCTION__);
+		ret = proc_unlinkurb(ps, p);
+		break;
+
+	case USBDEVFS_REAPURB:
+		snoop(&dev->dev, "%s: REAPURB\n", __FUNCTION__);
+		ret = proc_reapurb(ps, p);
+		break;
+
+	case USBDEVFS_REAPURBNDELAY:
+		snoop(&dev->dev, "%s: REAPURBDELAY\n", __FUNCTION__);
+		ret = proc_reapurbnonblock(ps, p);
+		break;
+
+	case USBDEVFS_DISCSIGNAL:
+		snoop(&dev->dev, "%s: DISCSIGNAL\n", __FUNCTION__);
+		ret = proc_disconnectsignal(ps, p);
+		break;
+
+	case USBDEVFS_CLAIMINTERFACE:
+		snoop(&dev->dev, "%s: CLAIMINTERFACE\n", __FUNCTION__);
+		ret = proc_claiminterface(ps, p);
+		break;
+
+	case USBDEVFS_RELEASEINTERFACE:
+		snoop(&dev->dev, "%s: RELEASEINTERFACE\n", __FUNCTION__);
+		ret = proc_releaseinterface(ps, p);
+		break;
+
+	case USBDEVFS_IOCTL:
+		snoop(&dev->dev, "%s: IOCTL\n", __FUNCTION__);
+		ret = proc_ioctl(ps, p);
+		break;
+	}
+	usb_unlock_device(dev);
+	if (ret >= 0)
+		inode->i_atime = CURRENT_TIME;
+	return ret;
+}
+
+/* No kernel lock - fine */
+static unsigned int usbdev_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct dev_state *ps = (struct dev_state *)file->private_data;
+        unsigned int mask = 0;
+
+	poll_wait(file, &ps->wait, wait);
+	if (file->f_mode & FMODE_WRITE && !list_empty(&ps->async_completed))
+		mask |= POLLOUT | POLLWRNORM;
+	if (!connected(ps->dev))
+		mask |= POLLERR | POLLHUP;
+	return mask;
+}
+
+struct file_operations usbfs_device_file_operations = {
+	.llseek =	usbdev_lseek,
+	.read =		usbdev_read,
+	.poll =		usbdev_poll,
+	.ioctl =	usbdev_ioctl,
+	.open =		usbdev_open,
+	.release =	usbdev_release,
+};