linux-kernel - Re: [PATCH AUTOSEL 4.18 043/131] ASoC: soc-pcm: Use delay set in component pointer function

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Date:   Mon, 3 Sep 2018 12:16:26 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Sasha Levin <Alexander.Levin@...rosoft.com>
Cc:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Akshu Agrawal <akshu.agrawal@....com>
Subject: Re: [PATCH AUTOSEL 4.18 043/131] ASoC: soc-pcm: Use delay set in
 component pointer function

On Sun, Sep 02, 2018 at 01:03:55PM +0000, Sasha Levin wrote:
> From: Akshu Agrawal <akshu.agrawal@....com>
> 
> [ Upstream commit 9fb4c2bf130b922c77c16a8368732699799c40de ]
> 
> Take into account the base delay set in pointer callback.
> 
> There are cases where a pointer function populates
> runtime->delay, such as:
> ./sound/pci/hda/hda_controller.c
> ./sound/soc/intel/atom/sst-mfld-platform-pcm.c

I'm worried that if anyone notices this at all they will have already
compensated for the delays in userspace and therefore this will cause
them to see problems as they get double compenstation for delays.

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