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[PATCH] V4L: check inval in video_register_device_index()

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From: Henne <henne@...>
To: <mchehab@...>
Cc: <video4linux-list@...>, <linux-kernel@...>
Subject: [PATCH] V4L: check inval in video_register_device_index()
Date: Friday, August 22, 2008 - 3:41 pm

From: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>

Better check the video_device pointer before using it.


diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 6f36006..ef153ff 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -257,6 +257,9 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
 	int ret;
 	char *name_base;
 
+	if (vfd == NULL)
+		return -EINVAL;
+
 	switch (type) {
 	case VFL_TYPE_GRABBER:
 		base = MINOR_VFL_TYPE_GRABBER_MIN;


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[PATCH] V4L: check inval in video_register_device_index(), Henne, (Fri Aug 22, 3:41 pm)