--- zzzz-none-000/linux-2.6.32.61/drivers/usb/serial/ftdi_sio.c	2013-06-10 09:43:48.000000000 +0000
+++ ar10-7272-687/linux-2.6.32.61/drivers/usb/serial/ftdi_sio.c	2015-04-09 11:31:23.000000000 +0000
@@ -2082,6 +2082,7 @@
 	dbg("%s write returning: %d", __func__, count);
 	return count;
 error:
+    usb_unlink_urb(urb);
 	usb_free_urb(urb);
 error_no_urb:
 	kfree(buffer);