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path: root/drivers/media/video/v4l2-dev.c
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Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
-rw-r--r--drivers/media/video/v4l2-dev.c11
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. */
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