[PATCH net-next 1/3] mctp: serial: cancel tx work on ldisc close

We want to ensure that the tx work has finished before returning from
the ldisc close op, so do a synchronous cancel.

Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
---
 drivers/net/mctp/mctp-serial.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/mctp/mctp-serial.c b/drivers/net/mctp/mctp-serial.c
index 9ac0e187f36e..c958d773a82a 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c

@@ -478,6 +478,7 @@ static void mctp_serial_close(struct tty_struct *tty)
 	struct mctp_serial *dev = tty->disc_data;
 	int idx = dev->idx;
 
+	cancel_work_sync(&dev->tx_work);
 	unregister_netdev(dev->netdev);
 	ida_free(&mctp_serial_ida, idx);
 }

-- 
2.33.0