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 19:35:00 +0100
From:   Cezary Rojewski <cezary.rojewski@...el.com>
To:     Dominik Brodowski <linux@...inikbrodowski.net>
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 2020-03-19 19:24, Dominik Brodowski wrote:
> On Thu, Mar 19, 2020 at 06:33:50PM +0100, Cezary Rojewski wrote:
>>
>> Could you confirm the same happens on your machine when revert of mentioned
>> patch is not applied ("stream is NULL" messages occur)? Issue may be
>> harmless but explained sequence does not look right.
> 
> Indeed, I still see
> 
> haswell-pcm-audio haswell-pcm-audio: warning: stream is NULL, no stream to reset, ignore it.
> haswell-pcm-audio haswell-pcm-audio: warning: stream is NULL, no stream to free, ignore it.
> haswell-pcm-audio haswell-pcm-audio: FW loaded, mailbox readback FW info: type 01, - version: 00.00, build 77, source commit id: 876ac6906f31a43b6772b23c7c983ce9dcb18a19
> haswell-pcm-audio haswell-pcm-audio: warning: stream is NULL, no stream to reset, ignore it.
> haswell-pcm-audio haswell-pcm-audio: warning: stream is NULL, no stream to free, ignore it.
> 
> though sounds continues to work.
> 

Thanks once again for your input and time!

I'll prepare patches for both issues. My guess is haswell-pcm could be 
updated to handle 'platform' component param just fine, but it is 
probably a change of more than few lines. I'd rather revert non-SOF 
broadwell to its previous behavior and start a separate task from there.

Regards,
Czarek