From d1c99f365a1f51f9c7e76ea3c52605cf740b3251 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@codeconstruct.com.au>
Date: Thu, 25 Nov 2021 14:07:39 +0800
Subject: [PATCH] mctp: serial: remove unnecessary ldisc data check

Jiri assures me that a ldisc->open with tty->disc_data set should never
happen, so this check doesn't do anything.

Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 drivers/net/mctp/mctp-serial.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/mctp/mctp-serial.c b/drivers/net/mctp/mctp-serial.c
index b0e14a63b10d..eaa6fb3224bc 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -439,9 +439,6 @@ static int mctp_serial_open(struct tty_struct *tty)
 	if (!tty->ops->write)
 		return -EOPNOTSUPP;
 
-	if (tty->disc_data)
-		return -EEXIST;
-
 	idx = ida_alloc(&mctp_serial_ida, GFP_KERNEL);
 	if (idx < 0)
 		return idx;