Make the core set the reserved fields to zero in
v4l2_pix_format_mplane and v4l2_plane_pix_format structs,
for _MPLANE queue types.

Moving this to the core avoids having to do so in each
and every driver.

Suggested-by: Tomasz Figa <tf...@chromium.org>
Signed-off-by: Ezequiel Garcia <ezequ...@collabora.com>
---
 drivers/media/v4l2-core/v4l2-ioctl.c | 51 ++++++++++++++++++++++++----
 1 file changed, 45 insertions(+), 6 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c 
b/drivers/media/v4l2-core/v4l2-ioctl.c
index 10b862dcbd86..3858fffc3e68 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1420,6 +1420,7 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
 {
        struct v4l2_format *p = arg;
        int ret = check_fmt(file, p->type);
+       int i;
 
        if (ret)
                return ret;
@@ -1458,7 +1459,13 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-               return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
+               ret = ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
+               memset(p->fmt.pix_mp.reserved, 0,
+                      sizeof(p->fmt.pix_mp.reserved));
+               for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+                       memset(p->fmt.pix_mp.plane_fmt[i].reserved, 0,
+                              sizeof(p->fmt.pix_mp.plane_fmt[i].reserved));
+               return ret;
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
                return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_CAPTURE:
@@ -1474,7 +1481,13 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-               return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
+               ret = ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
+               memset(p->fmt.pix_mp.reserved, 0,
+                      sizeof(p->fmt.pix_mp.reserved));
+               for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+                       memset(p->fmt.pix_mp.plane_fmt[i].reserved, 0,
+                              sizeof(p->fmt.pix_mp.plane_fmt[i].reserved));
+               return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
                return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_OUTPUT:
@@ -1512,6 +1525,7 @@ 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);
+       int i;
 
        if (ret)
                return ret;
@@ -1536,7 +1550,13 @@ 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);
-               return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
+               ret = ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
+               memset(p->fmt.pix_mp.reserved, 0,
+                      sizeof(p->fmt.pix_mp.reserved));
+               for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+                       memset(p->fmt.pix_mp.plane_fmt[i].reserved, 0,
+                              sizeof(p->fmt.pix_mp.plane_fmt[i].reserved));
+               return ret;
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
                if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
                        break;
@@ -1564,7 +1584,13 @@ 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);
-               return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
+               ret = ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
+               memset(p->fmt.pix_mp.reserved, 0,
+                      sizeof(p->fmt.pix_mp.reserved));
+               for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+                       memset(p->fmt.pix_mp.plane_fmt[i].reserved, 0,
+                              sizeof(p->fmt.pix_mp.plane_fmt[i].reserved));
+               return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
                if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
                        break;
@@ -1604,6 +1630,7 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
 {
        struct v4l2_format *p = arg;
        int ret = check_fmt(file, p->type);
+       int i;
 
        if (ret)
                return ret;
@@ -1623,7 +1650,13 @@ 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);
-               return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
+               ret = ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
+               memset(p->fmt.pix_mp.reserved, 0,
+                      sizeof(p->fmt.pix_mp.reserved));
+               for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+                       memset(p->fmt.pix_mp.plane_fmt[i].reserved, 0,
+                              sizeof(p->fmt.pix_mp.plane_fmt[i].reserved));
+               return ret;
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
                if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
                        break;
@@ -1651,7 +1684,13 @@ 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);
-               return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
+               ret = ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
+               memset(p->fmt.pix_mp.reserved, 0,
+                      sizeof(p->fmt.pix_mp.reserved));
+               for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
+                       memset(p->fmt.pix_mp.plane_fmt[i].reserved, 0,
+                              sizeof(p->fmt.pix_mp.plane_fmt[i].reserved));
+               return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
                if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
                        break;
-- 
2.19.1

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