linux-kernel - Re: [PATCH] media: mediatek: vcodec: fix v4l2 compliance decoder cmd test fail

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Message-ID: <61b8e1e7e53a0d560b0e0a4107c63922190e7cec.camel@mediatek.com>
Date:   Fri, 1 Apr 2022 16:27:57 +0800
From:   "yunfei.dong@...iatek.com" <yunfei.dong@...iatek.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Alexandre Courbot <acourbot@...omium.org>,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        "Benjamin Gaignard" <benjamin.gaignard@...labora.com>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tomasz Figa <tfiga@...gle.com>
CC:     George Sun <george.sun@...iatek.com>,
        Xiaoyong Lu <xiaoyong.lu@...iatek.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        "Fritz Koenig" <frkoenig@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Irui Wang <irui.wang@...iatek.com>,
        "Steve Cho" <stevecho@...omium.org>, <linux-media@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [PATCH] media: mediatek: vcodec: fix v4l2 compliance decoder
 cmd test fail

Hi AngeloGioacchino,

Thanks for your suggestion.

On Fri, 2022-04-01 at 09:50 +0200, AngeloGioacchino Del Regno wrote:
> Il 01/04/22 05:04, Yunfei Dong ha scritto:
> > Will return -EINVAL using standard framework api when test
> > stateless
> > decoder with cmd VIDIOC_(TRY)DECODER_CMD.
> > 
> > Using another return value to adjust v4l2 compliance test for user
> > driver(GStreamer/Chrome) won't use decode cmd.
> > 
> > Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
> 
> Hello Yunfei,
> 
> this patch is a fix.. hence, this needs an appropriate Fixes: tag.
> Please add one.
> 
Add "Fixes: " in patch v2.
> Thanks,
> Angelo
> 
Thanks,
Yunfei Dong
> > ---
> >   drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c | 3 +--
> >   1 file changed, 1 insertion(+), 2 deletions(-)
> > 
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > index 3859e4c651c6..69b0e797d342 100644
> > --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > @@ -51,8 +51,7 @@ static int vidioc_try_decoder_cmd(struct file
> > *file, void *priv,
> >   
> >   	/* Use M2M stateless helper if relevant */
> >   	if (ctx->dev->vdec_pdata->uses_stateless_api)
> > -		return v4l2_m2m_ioctl_stateless_try_decoder_cmd(file,
> > priv,
> > -								cmd);
> > +		return -ENOTTY;
> >   	else
> >   		return v4l2_m2m_ioctl_try_decoder_cmd(file, priv, cmd);
> >   }