diff --git a/drivers/net/mctp/mctp-serial.c b/drivers/net/mctp/mctp-serial.c
index 9ac0e187f36e..85b407f4df11 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -479,6 +479,7 @@ static void mctp_serial_close(struct tty_struct *tty)
 	int idx = dev->idx;
 
 	unregister_netdev(dev->netdev);
+	cancel_work_sync(&dev->tx_work);
 	ida_free(&mctp_serial_ida, idx);
 }