linux-kernel - Re: snd_hda_intel/sst-acpi sound breakage on suspend/resume since 5.6-rc1

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Date:   Thu, 19 Mar 2020 17:35:02 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Dominik Brodowski <linux@...inikbrodowski.net>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        kuninori.morimoto.gx@...esas.com,
        Keyon Jie <yang.jie@...ux.intel.com>,
        alsa-devel@...a-project.org, curtis@...ainey.com,
        linux-kernel@...r.kernel.org, tiwai@...e.com,
        liam.r.girdwood@...ux.intel.com
Subject: Re: snd_hda_intel/sst-acpi sound breakage on suspend/resume since
 5.6-rc1

On Thu, Mar 19, 2020 at 12:21:47PM -0500, Pierre-Louis Bossart wrote:
> On 3/19/20 11:51 AM, Dominik Brodowski wrote:

> > That patch fixes the issue(s). I didn't even need to revert 64df6afa0dab
> > ("ASoC: Intel: broadwell: change cpu_dai and platform components for SOF")
> > on top of that. But you can assess better whether that patch needs care for
> > other reasons; for me, this one-liner you have suggested is perfect.

Good news!

> .ignore_suspend is set for bdw-rt5677.c and bdw-rt5650.c as well. I don't
> know if that was intentional.

The intended use case is for applications doing audio during suspend
like telephony audio between the modem and CODEC on a phone or
compressed audio playback.  I guess the compressed audio playback case
could possibly apply with these systems though x86 suspend/resume is
usually sufficiently heavyweight that it's surprising.

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