diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2015-03-14 19:28:25 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-03 00:30:36 +0300 |
| commit | 9b239b22df3ced4629af97e7edda558f1e7531b6 (patch) | |
| tree | 6d52ea1fc2f71cad1010a90fd0baa1f1750fd175 /drivers/media/v4l2-core/v4l2-ioctl.c | |
| parent | 2c9fc463d60b9d09111fde5903e1f3e8e891a674 (diff) | |
| download | linux-9b239b22df3ced4629af97e7edda558f1e7531b6.tar.xz | |
[media] v4l2-ioctl: allow all controls if ctrl_class == 0
The check_ext_ctrls() function in v4l2-ioctl.c checks if all controls in the
control array are from the same control class as c->ctrl_class. However,
that check should only be done if c->ctrl_class != 0. A 0 value means
that this restriction does not apply.
So return 1 (OK) if c->ctrl_class == 0.
Found by running v4l2-compliance on the uvc driver.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index d2dc7e557c35..aa407cb5f830 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -901,6 +901,8 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) */ if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) return 0; + if (c->ctrl_class == 0) + return 1; /* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { |