Re: [PATCH v2 16/18] media: mtk-vcodec: venc: make S_PARM return -ENOTTY for CAPTURE queue

[Hans Verkuil]

On 26/06/2020 10:04, Alexandre Courbot wrote:
> v4l2-compliance expects ENOTTY to be returned when a given queue does
> not support S_PARM.
> 
> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
> ---
>  drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> index aae610e6d4e8..346a33c6869d 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> @@ -200,7 +200,7 @@ static int vidioc_venc_s_parm(struct file *file, void *priv,
>  	struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
>  
>  	if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
> -		return -EINVAL;
> +		return -ENOTTY;

This doesn't look right: S_PARM *is* supported, just not for this buffer type.
So -EINVAL is the correct error code.

What is the exact v4l2-compliance failure? It might be a bug in the test.

Regards,

	Hans

>  
>  	ctx->enc_params.framerate_num =
>  			a->parm.output.timeperframe.denominator;
>