diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-12-06 09:33:03 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-12-11 12:47:21 +0100 |
| commit | 1fc2b5f7fb6d98c079236d57203c7b73a13c54d7 (patch) | |
| tree | 12a8986e5c68b4d4cd829e976c687346d3978fe6 /drivers/media/video/v4l2-dev.c | |
| parent | [media] gspca - zc3xx: Bad initialization of zc305/gc0303 (diff) | |
| download | linux-1fc2b5f7fb6d98c079236d57203c7b73a13c54d7.tar.xz linux-1fc2b5f7fb6d98c079236d57203c7b73a13c54d7.zip | |
[media] V4L: cosmetic clean up
Improve the use of the WARN_ON() macro and use a local variable, instead
of reduntantly dereferencing a pointer in v4l2-dev.c
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index a5c9ed128b97..6a07d283456b 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -146,10 +146,9 @@ static void v4l2_device_release(struct device *cd) struct v4l2_device *v4l2_dev = vdev->v4l2_dev; mutex_lock(&videodev_lock); - if (video_device[vdev->minor] != vdev) { - mutex_unlock(&videodev_lock); + if (WARN_ON(video_device[vdev->minor] != vdev)) { /* should not happen */ - WARN_ON(1); + mutex_unlock(&videodev_lock); return; } @@ -168,7 +167,7 @@ static void v4l2_device_release(struct device *cd) mutex_unlock(&videodev_lock); #if defined(CONFIG_MEDIA_CONTROLLER) - if (vdev->v4l2_dev && vdev->v4l2_dev->mdev && + if (v4l2_dev && v4l2_dev->mdev && vdev->vfl_type != VFL_TYPE_SUBDEV) media_device_unregister_entity(&vdev->entity); #endif @@ -556,8 +555,7 @@ int __video_register_device(struct video_device *vdev, int type, int nr, vdev->minor = -1; /* the release callback MUST be present */ - WARN_ON(!vdev->release); - if (!vdev->release) + if (WARN_ON(!vdev->release)) return -EINVAL; /* v4l2_fh support */ |