linux-kernel - [PATCH] Staging: gdm724x: mux: Check return value of register_lte_tty

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Date:   Sat, 17 Feb 2018 23:06:35 -0800
From:   Quytelda Kahja <quytelda@...alin.org>
To:     gregkh@...uxfoundation.org, jonathankim@...semi.com,
        deanahn@...semi.com, johan@...nel.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Quytelda Kahja <quytelda@...alin.org>
Subject: [PATCH] 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@...alin.org>
---
 drivers/staging/gdm724x/gdm_mux.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c
index 996b1f538aae..63921bad519e 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);
 }
-- 
2.16.1