diff options
Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 6b1ef85d8cc8..1898099ec65a 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -143,6 +143,7 @@ static inline void video_put(struct video_device *vdev) static void v4l2_device_release(struct device *cd) { struct video_device *vdev = to_video_device(cd); + struct v4l2_device *v4l2_dev = vdev->v4l2_dev; mutex_lock(&videodev_lock); if (video_device[vdev->minor] != vdev) { @@ -169,6 +170,10 @@ static void v4l2_device_release(struct device *cd) /* Release video_device and perform other cleanups as needed. */ vdev->release(vdev); + + /* Decrease v4l2_device refcount */ + if (v4l2_dev) + v4l2_device_put(v4l2_dev); } static struct class video_class = { @@ -676,6 +681,11 @@ int __video_register_device(struct video_device *vdev, int type, int nr, if (nr != -1 && nr != vdev->num && warn_if_nr_in_use) printk(KERN_WARNING "%s: requested %s%d, got %s\n", __func__, name_base, nr, video_device_node_name(vdev)); + + /* Increase v4l2_device refcount */ + if (vdev->v4l2_dev) + v4l2_device_get(vdev->v4l2_dev); + #if defined(CONFIG_MEDIA_CONTROLLER) /* Part 5: Register the entity. */ if (vdev->v4l2_dev && vdev->v4l2_dev->mdev) { |