Hi Ricardo,
On 11/01/2021 14:54, Ricardo Ribalda wrote:
> Core code already clears reserved fields of struct
> v4l2_pix_format_mplane, check: 4e1e0eb0e074 ("media: v4l2-ioctl: Zero
> v4l2_plane_pix_format reserved fields").
>
> Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
There's also another memset.*reserved occurring in
platform/mtk-vcodec/mtk_vcodec_enc.c: vidioc_enum_fmt()
While v4l2-core/v4l2-ioctl.c has:
> static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> struct video_device *vdev = video_devdata(file);
> struct v4l2_fmtdesc *p = arg;
> int ret = check_fmt(file, p->type);
> u32 mbus_code;
> u32 cap_mask;
>
> if (ret)
> return ret;
> ret = -EINVAL;
>
> if (!(vdev->device_caps & V4L2_CAP_IO_MC))
> p->mbus_code = 0;
>
> mbus_code = p->mbus_code;
> CLEAR_AFTER_FIELD(p, type);
So would that mean ^^^ should also be sufficient to remove the need for
that memset?
With that fixed or resolved:
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> ---
> drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 5 -----
> drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c | 8 --------
> 2 files changed, 13 deletions(-)
>
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
> index c768a587a944..d746c41ea805 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
> @@ -715,12 +715,7 @@ static int vidioc_try_fmt(struct v4l2_format *f,
> }
> }
>
> - for (i = 0; i < pix_fmt_mp->num_planes; i++)
> - memset(&(pix_fmt_mp->plane_fmt[i].reserved[0]), 0x0,
> - sizeof(pix_fmt_mp->plane_fmt[0].reserved));
> -
> pix_fmt_mp->flags = 0;
> - memset(&pix_fmt_mp->reserved, 0x0, sizeof(pix_fmt_mp->reserved));
> return 0;
> }
>
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> index 21de1431cfcb..db1f62cc38b3 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> @@ -320,13 +320,7 @@ static int vidioc_try_fmt(struct v4l2_format *f,
> }
> }
>
> - for (i = 0; i < pix_fmt_mp->num_planes; i++)
> - memset(&(pix_fmt_mp->plane_fmt[i].reserved[0]), 0x0,
> - sizeof(pix_fmt_mp->plane_fmt[0].reserved));
> -
> pix_fmt_mp->flags = 0;
> - memset(&pix_fmt_mp->reserved, 0x0,
> - sizeof(pix_fmt_mp->reserved));
>
> return 0;
> }
> @@ -532,8 +526,6 @@ static int vidioc_venc_g_fmt(struct file *file, void *priv,
> for (i = 0; i < pix->num_planes; i++) {
> pix->plane_fmt[i].bytesperline = q_data->bytesperline[i];
> pix->plane_fmt[i].sizeimage = q_data->sizeimage[i];
> - memset(&(pix->plane_fmt[i].reserved[0]), 0x0,
> - sizeof(pix->plane_fmt[i].reserved));
> }
>
> pix->flags = 0;
>
