On Wed, 2018-08-01 at 16:18 +0200, Lucas Stach wrote:
> On a decoder instance, after the profile has been parsed from the stream
> __v4l2_ctrl_s_ctrl() is called to notify userspace about changes in the
> read-only profile control. This ends up calling back into the CODA driver
> where a mssing check on the s_ctrl caused the profile information that has
> just been parsed from the stream to be overwritten with the default
> baseline profile.
> 
> Later on the driver fails to enable frame reordering, based on the wrong
> profile information.
> 
> Fixes: 347de126d1da (media: coda: add read-only h.264 decoder
>                      profile/level controls)
> Signed-off-by: Lucas Stach <l.st...@pengutronix.de>

Reviewed-by: Philipp Zabel <p.za...@pengutronix.de>

> ---
>  drivers/media/platform/coda/coda-common.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/coda/coda-common.c 
> b/drivers/media/platform/coda/coda-common.c
> index c7631e117dd3..1ae15d4ec5ed 100644
> --- a/drivers/media/platform/coda/coda-common.c
> +++ b/drivers/media/platform/coda/coda-common.c
> @@ -1719,7 +1719,8 @@ static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
>               break;
>       case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
>               /* TODO: switch between baseline and constrained baseline */
> -             ctx->params.h264_profile_idc = 66;
> +             if (ctx->inst_type == CODA_INST_ENCODER)
> +                     ctx->params.h264_profile_idc = 66;
>               break;
>       case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
>               /* nothing to do, this is set by the encoder */

regards
Philipp

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