From: Quytelda Kahja <quytelda@tamalin.org>
Date: Sun, 18 Feb 2018 07:06:35 +0000 (-0800)
Subject: Staging: gdm724x: mux: Check return value of register_lte_tty_driver().
X-Git-Tag: v4.19~1302^2~410
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a4b0330ec145909427d79556ac139c04517e81bb;p=platform%2Fkernel%2Flinux-rpi.git

Staging: gdm724x: mux: Check return value of register_lte_tty_driver().

Check the return value of of the register_lte_tty_driver() call in the
module initialization function.

Signed-off-by: Quytelda Kahja <quytelda@tamalin.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c
index 996b1f5..63921ba 100644
--- a/drivers/staging/gdm724x/gdm_mux.c
+++ b/drivers/staging/gdm724x/gdm_mux.c
@@ -657,7 +657,11 @@ static struct usb_driver gdm_mux_driver = {
 
 static int __init gdm_usb_mux_init(void)
 {
-	register_lte_tty_driver();
+	int ret;
+
+	ret = register_lte_tty_driver();
+	if (ret)
+		return ret;
 
 	return usb_register(&gdm_mux_driver);
 }