From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 8 Feb 2017 07:23:24 +0000 (+0300)
Subject: serdev: ttyport: check whether tty_init_dev() fails
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=10d258c51869916347adce4312e6fe41fa5144ad;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

serdev: ttyport: check whether tty_init_dev() fails

My static checker complains that we don't have any error handling here.
It's simple enough to add it.

Fixes: bed35c6dfa6a ("serdev: add a tty port controller driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
index 683320b81a2b..d05393594f15 100644
--- a/drivers/tty/serdev/serdev-ttyport.c
+++ b/drivers/tty/serdev/serdev-ttyport.c
@@ -97,6 +97,8 @@ static int ttyport_open(struct serdev_controller *ctrl)
 	struct ktermios ktermios;
 
 	tty = tty_init_dev(serport->tty_drv, serport->tty_idx);
+	if (IS_ERR(tty))
+		return PTR_ERR(tty);
 	serport->tty = tty;
 
 	serport->port->client_ops = &client_ops;