From: Henrik Kretzschmar <henne@nachtwindheim.de>
Date: Fri, 22 Aug 2008 19:41:03 +0000 (-0300)
Subject: V4L/DVB (8750): V4L: check inval in video_register_device_index()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ee7aa9f821b27674f36fc09413914b68f7ad97ca;p=linux-beck.git

V4L/DVB (8750): V4L: check inval in video_register_device_index()

Better check the video_device pointer before using it.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 6b9f3cb0de98..8903e41628eb 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -254,6 +254,9 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
 	int ret;
 	char *name_base;
 
+	if (vfd == NULL)
+		return -EINVAL;
+
 	if (vfd == NULL)
 		return -EINVAL;