linux-kernel - Re: [PATCH AUTOSEL 5.2 022/123] ASoC: dapm: Fix handling of custom_stop

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Message-ID: <20190814092052.GB4640@sirena.co.uk>
Date:   Wed, 14 Aug 2019 10:20:52 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Charles Keepax <ckeepax@...nsource.cirrus.com>
Subject: Re: [PATCH AUTOSEL 5.2 022/123] ASoC: dapm: Fix handling of
 custom_stop_condition on DAPM graph walks

On Tue, Aug 13, 2019 at 10:09:06PM -0400, Sasha Levin wrote:
> From: Charles Keepax <ckeepax@...nsource.cirrus.com>
> 
> [ Upstream commit 8dd26dff00c0636b1d8621acaeef3f6f3a39dd77 ]
> 
> DPCM uses snd_soc_dapm_dai_get_connected_widgets to build a
> list of the widgets connected to a specific front end DAI so it
> can search through this list for available back end DAIs. The

The DPCM code and its users are rather fragile, if nobody noticed a
problem I'd worry about causing some other problem to manifest by
disturbing things.

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