diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 1122a0d..590c7ec 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1472,7 +1472,7 @@
 		return;
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 } /* ftdi_write_bulk_callback */