diff options
Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 91228b3..31eac66 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -229,7 +229,7 @@ static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm) static int v4l2_open(struct inode *inode, struct file *filp) { struct video_device *vdev; - int ret; + int ret = 0; /* Check if the video device is available */ mutex_lock(&videodev_lock); @@ -243,7 +243,9 @@ static int v4l2_open(struct inode *inode, struct file *filp) /* and increase the device refcount */ video_get(vdev); mutex_unlock(&videodev_lock); - ret = vdev->fops->open(filp); + if (vdev->fops->open) + ret = vdev->fops->open(filp); + /* decrease the refcount in case of an error */ if (ret) video_put(vdev); @@ -254,7 +256,10 @@ static int v4l2_open(struct inode *inode, struct file *filp) static int v4l2_release(struct inode *inode, struct file *filp) { struct video_device *vdev = video_devdata(filp); - int ret = vdev->fops->release(filp); + int ret = 0; + + if (vdev->fops->release) + vdev->fops->release(filp); /* decrease the refcount unconditionally since the release() return value is ignored. */ |
