linux-kernel - Re: [PATCH v2] media: venus: dec: Fix handling of the start cmd

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Date:   Wed, 5 Apr 2023 11:29:12 +0200
From:   Michał Krawczyk <mk@...ihalf.com>
To:     Vikash Garodia <vgarodia@....qualcomm.com>
Cc:     Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        "Vikash Garodia (QUIC)" <quic_vgarodia@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "mw@...ihalf.com" <mw@...ihalf.com>
Subject: Re: [PATCH v2] media: venus: dec: Fix handling of the start cmd

Hi,

just a kindly reminder about the patch.

Thanks,
Michał

pt., 10 mar 2023 o 16:05 Michał Krawczyk <mk@...ihalf.com> napisał(a):
>
> Hi,
>
> Any update on this patch? It would be great if we could make some
> progress there (and, hopefully, finally merge it :))
>
> Thanks,
> Michał
>
> pt., 10 lut 2023 o 16:18 Michał Krawczyk <mk@...ihalf.com> napisał(a):
> >
> > Hi,
> >
> > I'm wondering if there are any more comments for this patch? I would
> > be happy to clarify anything that's unclear or improve the code if
> > needed.
> >
> > I know it's pretty late, but it would be really great if this fix
> > could land before v6.2 is released, so I'd appreciate your help and
> > review.
> >
> > Thank you,
> > Michał
> >
> > wt., 7 lut 2023 o 12:15 Michał Krawczyk <mk@...ihalf.com> napisał(a):
> > >
> > > wt., 7 lut 2023 o 10:54 Vikash Garodia <vgarodia@....qualcomm.com> napisał(a):
> > > > I have reviewed the patch, and the drain sequence handling looks good to me.
> > > > Could you share some details on the test client which you are using to catch this issue ?
> > >
> > > Hi Vikash,
> > >
> > > Thank you for looking at the code!
> > >
> > > I've been testing it using the Chromium implementation of the V4L2
> > > codec [1]. Meanwhile, we were running a test suite which changes the
> > > encryption method in the middle of the video decoding. This triggers
> > > the flush behavior and the Chromium sends the stop/start cmd to the
> > > V4L2 kernel component, and the test expects the video to continue the
> > > playback normally. Unfortunately, it was causing a stall of the video
> > > at the same time.
> > >
> > > [1] https://source.chromium.org/chromium/chromium/src/+/main:media/gpu/v4l2/
> > >
> > > >
> > > > > Thank you,
> > > > > Michał
> > > >
> > > > Thanks,
> > > > Vikash