3.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <redacted>

commit 65a4cdbb170e4ec1a7fa0e94936d47e24a17b0e8 upstream.

Make sure control urb is freed at release.

Signed-off-by: Johan Hovold <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/serial/mos7840.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c

@@ -2754,6 +2754,7 @@ static void mos7840_release(struct usb_s
 				del_timer_sync(&mos7840_port->led_timer1);
 				del_timer_sync(&mos7840_port->led_timer2);
 			}
+			usb_free_urb(mos7840_port->control_urb);
 			kfree(mos7840_port->ctrl_buf);
 			kfree(mos7840_port->dr);
 			kfree(mos7840_port);