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[media] v4l2-ioctl: clips, clipcount and bitmap should not be zeroed

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Otherwise you cannot get the current clip and bitmap information from
an overlay.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Hans Verkuil 2014-07-17 18:45:45 -03:00 committed by Mauro Carvalho Chehab
parent 9409945c7f
commit e5ce558a61
1 changed files with 25 additions and 1 deletions
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26
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1145,6 +1145,30 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
/*
* fmt can't be cleared for these overlay types due to the 'clips'
* 'clipcount' and 'bitmap' pointers in struct v4l2_window.
* Those are provided by the user. So handle these two overlay types
* first, and then just do a simple memset for the other types.
*/
switch (p->type) {
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
struct v4l2_clip *clips = p->fmt.win.clips;
u32 clipcount = p->fmt.win.clipcount;
void *bitmap = p->fmt.win.bitmap;
memset(&p->fmt, 0, sizeof(p->fmt));
p->fmt.win.clips = clips;
p->fmt.win.clipcount = clipcount;
p->fmt.win.bitmap = bitmap;
break;
}
default:
memset(&p->fmt, 0, sizeof(p->fmt));
break;
}
switch (p->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
@ -2140,7 +2164,7 @@ struct v4l2_ioctl_info {
static struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),