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media: v4l2-ioctl: clear fields in s_parm

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Zero the reserved capture/output array.

Zero the extendedmode (it is never used in drivers).

Clear all flags in capture/outputmode except for V4L2_MODE_HIGHQUALITY,
as that is the only valid flag.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil 2018-05-12 10:44:02 -04:00 committed by Mauro Carvalho Chehab
parent 1f5965c4df
commit 8a7c5594c0
1 changed files with 16 additions and 1 deletions
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17
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1952,7 +1952,22 @@ static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
struct v4l2_streamparm *p = arg;
int ret = check_fmt(file, p->type);
return ret ? ret : ops->vidioc_s_parm(file, fh, p);
if (ret)
return ret;
/* Note: extendedmode is never used in drivers */
if (V4L2_TYPE_IS_OUTPUT(p->type)) {
memset(p->parm.output.reserved, 0,
sizeof(p->parm.output.reserved));
p->parm.output.extendedmode = 0;
p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
} else {
memset(p->parm.capture.reserved, 0,
sizeof(p->parm.capture.reserved));
p->parm.capture.extendedmode = 0;
p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
}
return ops->vidioc_s_parm(file, fh, p);
}
static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,