media: v4l2-ioctl: Zero v4l2_plane_pix_format reserved fields

Make the core set the reserved fields to zero in
vv4l2_pix_format_mplane.4l2_plane_pix_format,
for _MPLANE queue types.

Moving this to the core avoids having to do so in each
and every driver.
Suggested-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/v4l2-core/v4l2-ioctl.c

@@ -1513,6 +1513,7 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
 	struct v4l2_format *p = arg;
 	struct video_device *vfd = video_devdata(file);
 	int ret = check_fmt(file, p->type);
+	unsigned int i;
 
 	if (ret)
 		return ret;
@@ -1537,6 +1538,8 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
 		if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
 			break;
 		CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
+		for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+			CLEAR_AFTER_FIELD(p, fmt.pix_mp.plane_fmt[i].bytesperline);
 		return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
 	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 		if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
@@ -1565,6 +1568,8 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
 		if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
 			break;
 		CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
+		for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+			CLEAR_AFTER_FIELD(p, fmt.pix_mp.plane_fmt[i].bytesperline);
 		return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
 	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 		if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
@@ -1605,6 +1610,7 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
 {
 	struct v4l2_format *p = arg;
 	int ret = check_fmt(file, p->type);
+	unsigned int i;
 
 	if (ret)
 		return ret;
@@ -1624,6 +1630,8 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
 		if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
 			break;
 		CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
+		for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+			CLEAR_AFTER_FIELD(p, fmt.pix_mp.plane_fmt[i].bytesperline);
 		return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
 	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 		if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
@@ -1652,6 +1660,8 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
 		if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
 			break;
 		CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
+		for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+			CLEAR_AFTER_FIELD(p, fmt.pix_mp.plane_fmt[i].bytesperline);
 		return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
 	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 		if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))