diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 3b99f9676c35..f05bcce60600 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -516,7 +516,7 @@ static int keyspan_pda_write_start(struct usb_serial_port *port)
 	if (count == room)
 		schedule_work(&priv->unthrottle_work);
 
-	return count;
+	return 0;
 }
 
 static void keyspan_pda_write_bulk_callback(struct urb *urb)