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

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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>
This commit is contained in:
Henrik Kretzschmar 2008-09-03 17:11:53 -03:00 committed by Mauro Carvalho Chehab
parent 5b5aff83a5
commit f3b9f50ef7
1 changed files with 3 additions and 0 deletions
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3
drivers/media/video/v4l2-dev.c
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@ -257,6 +257,9 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
int ret; int ret;
char *name_base; char *name_base;
if (vfd == NULL)
return -EINVAL;
switch (type) { switch (type) {
case VFL_TYPE_GRABBER: case VFL_TYPE_GRABBER:
base = MINOR_VFL_TYPE_GRABBER_MIN; base = MINOR_VFL_TYPE_GRABBER_MIN;