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[media] uvcvideo: Fix crash when linking entities 

The uvc_mc_register_entity() function wrongfully selects the
media_entity associated with a UVC entity when creating links. This
results in access to uninitialized media_entity structures and can hit a
BUG_ON statement in media_entity_create_link(). Fix it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2011-09-06 19:16:18 -03:00 committed by Mauro Carvalho Chehab
parent 236c5441d7
commit 4d9b2ebd33
1 changed files with 1 additions and 1 deletions
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2
drivers/media/video/uvc/uvc_entity.c
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@ -49,7 +49,7 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain,
if (remote == NULL)
return -EINVAL;
source = (UVC_ENTITY_TYPE(remote) != UVC_TT_STREAMING)
source = (UVC_ENTITY_TYPE(remote) == UVC_TT_STREAMING)
? (remote->vdev ? &remote->vdev->entity : NULL)
: &remote->subdev.entity;
if (source == NULL)