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 17:51:57 +0100
From:   Dominik Brodowski <linux@...inikbrodowski.net>
To:     Cezary Rojewski <cezary.rojewski@...el.com>
Cc:     Mark Brown <broonie@...nel.org>, kuninori.morimoto.gx@...esas.com,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.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 04:48:03PM +0100, Cezary Rojewski wrote:
> On 2020-03-19 14:41, Mark Brown wrote:
> > On Thu, Mar 19, 2020 at 02:00:49PM +0100, Dominik Brodowski wrote:
> > 
> > > Have some good news now, namely that a bisect is complete: That pointed to
> > > 1272063a7ee4 ("ASoC: soc-core: care .ignore_suspend for Component suspend");
> > > therefore I've added Kuninori Morimoto to this e-mail thread.
> > 
> > If that's an issue it feels more like a driver bug in that if the driver
> > asked for ignore_suspend then it should expect not to have the suspend
> > callback called.
> > 
> 
> Requested for tests with following diff applied:
> 
> diff --git a/sound/soc/intel/boards/broadwell.c
> b/sound/soc/intel/boards/broadwell.c
> index db7e1e87156d..6ed4c1b0a515 100644
> --- a/sound/soc/intel/boards/broadwell.c
> +++ b/sound/soc/intel/boards/broadwell.c
> @@ -212,7 +212,6 @@ static struct snd_soc_dai_link broadwell_rt286_dais[] =
> {
>                 .init = broadwell_rt286_codec_init,
>                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
>                         SND_SOC_DAIFMT_CBS_CFS,
> -               .ignore_suspend = 1,
>                 .ignore_pmdown_time = 1,
>                 .be_hw_params_fixup = broadwell_ssp0_fixup,
>                 .ops = &broadwell_rt286_ops,

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.

Many thanks -- it's been a pleasure to work with you on tracking this issue
down.

	Dominik