LinuxTV Patchwork [v3] v4l2-ioctl: Zero v4l2_plane_pix_format reserved fields

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Submitter Ezequiel Garcia
Date Dec. 6, 2018, 7:46 p.m.
Message ID <20181206194639.13472-1-ezequiel@collabora.com>
Download mbox | patch
Permalink /patch/53353/
State Accepted
Delegated to: Hans Verkuil
Headers show

Comments

Ezequiel Garcia - Dec. 6, 2018, 7:46 p.m.
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>
--
v3:
  * s/int/unsigned int, suggested by Sakari

v2:
  * Drop unneeded clear in g_fmt.
    The sturct was already being cleared here.
  * Only zero plane_fmt reserved fields.
  * Use CLEAR_FIELD_MACRO.

 drivers/media/v4l2-core/v4l2-ioctl.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
Tomasz Figa - Dec. 10, 2018, 3:20 a.m.
Hi Ezequiel,

On Fri, Dec 7, 2018 at 4:46 AM Ezequiel Garcia <ezequiel@collabora.com> wrote:
>
> 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>
> --
> v3:
>   * s/int/unsigned int, suggested by Sakari
>
> v2:
>   * Drop unneeded clear in g_fmt.
>     The sturct was already being cleared here.
>   * Only zero plane_fmt reserved fields.
>   * Use CLEAR_FIELD_MACRO.
>
>  drivers/media/v4l2-core/v4l2-ioctl.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>

Thanks for the patch.

Reviewed-by: Tomasz Figa <tfiga@chromium.org>

Best regards,
Tomasz

Patch

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index e384142d2826..7e8e7915c041 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1512,6 +1512,7 @@  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;
@@ -1536,6 +1537,8 @@  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))
@@ -1564,6 +1567,8 @@  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))
@@ -1604,6 +1609,7 @@  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;
@@ -1623,6 +1629,8 @@  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))
@@ -1651,6 +1659,8 @@  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))

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