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Message-ID: <ef36f69b2bed28c4c084d24948ba56690e6989b1.camel@mediatek.com>
Date: Sat, 23 Mar 2024 01:45:14 +0000
From: Irui Wang (王瑞) <Irui.Wang@...iatek.com>
To: "matthias.bgg@...il.com" <matthias.bgg@...il.com>, "mchehab@...nel.org"
<mchehab@...nel.org>, "sebastian.fricke@...labora.com"
<sebastian.fricke@...labora.com>, "angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>, "nicolas.dufresne@...labora.com"
<nicolas.dufresne@...labora.com>, "hverkuil-cisco@...all.nl"
<hverkuil-cisco@...all.nl>, Yunfei Dong (董云飞)
<Yunfei.Dong@...iatek.com>
CC: "linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
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Maoguang Meng (孟毛广)
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<linux-mediatek@...ts.infradead.org>,
Longfei Wang (王龙飞) <Longfei.Wang@...iatek.com>,
Project_Global_Chrome_Upstream_Group
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Subject: Re: [PATCH] media: mediatek: vcodec: Handle invalid decoder vsi
Dear Nicolas,
Thanks for your reviewing.
On Fri, 2024-03-22 at 10:44 -0400, Nicolas Dufresne wrote:
> Hi,
>
> Le mercredi 20 mars 2024 à 14:13 +0800, Irui Wang a écrit :
> > Handle invalid decoder vsi in vpu_dec_init to ensure the decoder
> > vsi is
> > valid for future use.
> >
> > Signed-off-by: Irui Wang <irui.wang@...iatek.com>
> > ---
> > .../media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c | 6
> > ++++++
> > 1 file changed, 6 insertions(+)
> >
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
> > b/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
> > index 82e57ae983d5..17770993fe5a 100644
> > --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
> > +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c
> > @@ -231,6 +231,12 @@ int vpu_dec_init(struct vdec_vpu_inst *vpu)
> > mtk_vdec_debug(vpu->ctx, "vdec_inst=%p", vpu);
> >
> > err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
> > +
> > + if (IS_ERR_OR_NULL(vpu->vsi)) {
> > + mtk_vdec_err(vpu->ctx, "invalid vdec vsi, status=%d",
> > err);
> > + return -EINVAL;
> > + }
> > +
>
> Make sense, though on the cosmetic side, were is the err value from
> if the vsi
> pointer is NULL ?
Do you mean the returned 'err'?, it's the status value returned by
'send message'. Even if the 'vsi' is NULL, the returned status value
'err' may still be 'NO_ERROR', there is no direct relationship between
them.
If I misunderstood your question, please correct me. Thank you very
much.
>
> Nicolas
>
> > mtk_vdec_debug(vpu->ctx, "- ret=%d", err);
> > return err;
> > }
>
>
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