diff options
| -rw-r--r-- | Documentation/video4linux/v4l2-framework.txt | 5 | ||||
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 4 |
2 files changed, 4 insertions, 5 deletions
diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt index 8fb9de4f487..9b1d81c26b7 100644 --- a/Documentation/video4linux/v4l2-framework.txt +++ b/Documentation/video4linux/v4l2-framework.txt @@ -551,9 +551,8 @@ from /dev). After video_unregister_device() returns no new opens can be done. However, in the case of USB devices some application might still have one of these -device nodes open. So after the unregister all file operations will return -an error as well, except for the ioctl and unlocked_ioctl file operations: -those will still be passed on since some buffer ioctls may still be needed. +device nodes open. So after the unregister all file operations (except +release, of course) will return an error as well. When the last user of the video device node exits, then the vdev->release() callback is called and you can do the final cleanup there. diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index d4a353260c1..f069c61cdf6 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -221,8 +221,8 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) struct video_device *vdev = video_devdata(filp); int ret; - /* Allow ioctl to continue even if the device was unregistered. - Things like dequeueing buffers might still be useful. */ + if (!vdev->fops->ioctl) + return -ENOTTY; if (vdev->fops->unlocked_ioctl) { ret = vdev->fops->unlocked_ioctl(filp, cmd, arg); } else if (vdev->fops->ioctl) { |