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[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>
hifive-unleashed-5.1
Frank Schaefer 2013-02-07 13:39:09 -03:00 committed by Mauro Carvalho Chehab
parent d34c353cd4
commit 6e46daba56
1 changed files with 7 additions and 6 deletions
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13
drivers/media/usb/em28xx/em28xx-video.c
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@ -959,8 +959,6 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
struct em28xx *dev = fh->dev;
int rc;
if (dev->board.is_webcam)
return -ENOTTY;
rc = check_dev(dev);
if (rc < 0)
return rc;
@ -976,8 +974,6 @@ static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
struct em28xx *dev = fh->dev;
int rc;
if (dev->board.is_webcam)
return -ENOTTY;
rc = check_dev(dev);
if (rc < 0)
return rc;
@ -994,8 +990,6 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
struct v4l2_format f;
int rc;
if (dev->board.is_webcam)
return -ENOTTY;
if (*norm == dev->norm)
return 0;
rc = check_dev(dev);
@ -1899,6 +1893,13 @@ int em28xx_register_analog_devices(struct em28xx *dev)
dev->vdev->queue = &dev->vb_vidq;
dev->vdev->queue->lock = &dev->vb_queue_lock;
/* disable inapplicable ioctls */
if (dev->board.is_webcam) {
v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
}
/* register v4l2 video video_device */
ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
video_nr[dev->devno]);