From 1fc2b5f7fb6d98c079236d57203c7b73a13c54d7 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Tue, 6 Dec 2011 05:33:03 -0300 Subject: [PATCH] [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 Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-dev.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index a5c9ed128b9..6a07d283456 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 */ -- 2.41.0