[media] em28xx: use v4l2_disable_ioctl() to disable ioctls VIDIOC_QUERYSTD, VIDIOC_G/S_STD
Instead of checking the device type and returning -ENOTTY inside the ioctl functions, use v4l2_disable_ioctl() to disable the ioctls VIDIOC_QUERYSTD, VIDIOC_G_STD and VIDIOC_S_STD if the device is a camera. Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -959,8 +959,6 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
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struct em28xx *dev = fh->dev;
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int rc;
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if (dev->board.is_webcam)
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return -ENOTTY;
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rc = check_dev(dev);
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if (rc < 0)
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return rc;
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@ -976,8 +974,6 @@ static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
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struct em28xx *dev = fh->dev;
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int rc;
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if (dev->board.is_webcam)
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return -ENOTTY;
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rc = check_dev(dev);
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if (rc < 0)
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return rc;
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@ -994,8 +990,6 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
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struct v4l2_format f;
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int rc;
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if (dev->board.is_webcam)
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return -ENOTTY;
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if (*norm == dev->norm)
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return 0;
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rc = check_dev(dev);
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@ -1899,6 +1893,13 @@ int em28xx_register_analog_devices(struct em28xx *dev)
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dev->vdev->queue = &dev->vb_vidq;
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dev->vdev->queue->lock = &dev->vb_queue_lock;
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/* disable inapplicable ioctls */
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if (dev->board.is_webcam) {
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v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
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v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
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v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
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}
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/* register v4l2 video video_device */
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ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
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video_nr[dev->devno]);
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