diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c
index a4a0bfeaab00ba88a4f31d35da5dd4d5cb566c56..4d5275e4dead96a7ce782d1d0397c32603be0d23 100644
--- a/drivers/usb/serial/ipw.c
+++ b/drivers/usb/serial/ipw.c
@@ -373,6 +373,8 @@ static void ipw_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
 
 	dbg("%s", __FUNCTION__);
 
+	port->write_urb_busy = 0;
+
 	if (urb->status)
 		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);