[PATCH] usbfs: Remove extraneous disconnection checks

This patch fixes a bug in the usbfs code.  The driver is too zealous about
checking for disconnected devices before doing things.  In particular, it
is necessary to reap all outstanding asynchronous URBs and unbind from
interfaces when the device file is closed, even if the device is no longer
connected.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/usb/core/devio.c

@@ -523,13 +523,12 @@ static int usbdev_release(struct inode *inode, struct file *file)
 
 	usb_lock_device(dev);
 	list_del_init(&ps->list);
-
-	if (connected(dev)) {
-		for (ifnum = 0; ps->ifclaimed && ifnum < 8*sizeof(ps->ifclaimed); ifnum++)
-			if (test_bit(ifnum, &ps->ifclaimed))
-				releaseintf(ps, ifnum);
-		destroy_all_async(ps);
+	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;
@@ -1023,7 +1022,7 @@ static int proc_reapurb(struct dev_state *ps, void __user *arg)
 	int ret;
 
 	add_wait_queue(&ps->wait, &wait);
-	while (connected(dev)) {
+	for (;;) {
 		__set_current_state(TASK_INTERRUPTIBLE);
 		if ((as = async_getcompleted(ps)))
 			break;