[PATCH] USB: add wake-up for waitqueues in usbfs_remove_file() to fix bug 387

Description: Bug 387 (http://bugzilla.kernel.org/show_bug.cgi?id=387)
is fixed by the attached patch, which sends waitqueue wake-ups to all
the appropriate wait-queue entries when a device is removed from
the system.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/usb/core/inode.c

@@ -715,6 +715,7 @@ void usbfs_remove_device(struct usb_device *dev)
 	}
 	while (!list_empty(&dev->filelist)) {
 		ds = list_entry(dev->filelist.next, struct dev_state, list);
+		wake_up_all(&ds->wait);
 		list_del_init(&ds->list);
 		if (ds->discsignr) {
 			sinfo.si_signo = SIGPIPE;