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Subject: Re: snd_hda_intel/sst-acpi sound breakage on suspend/resume since
 5.6-rc1
To:     Cezary Rojewski <cezary.rojewski@intel.com>,
        Dominik Brodowski <linux@dominikbrodowski.net>
Cc:     alsa-devel@alsa-project.org, kuninori.morimoto.gx@renesas.com,
        curtis@malainey.com, tiwai@suse.com,
        Keyon Jie <yang.jie@linux.intel.com>,
        linux-kernel@vger.kernel.org, liam.r.girdwood@linux.intel.com,
        Mark Brown <broonie@kernel.org>
References: <e49eec28-2037-f5db-e75b-9eadf6180d81@intel.com>
 <20200318192213.GA2987@light.dominikbrodowski.net>
 <b352a46b-8a66-8235-3622-23e561d3728c@intel.com>
 <20200318215218.GA2439@light.dominikbrodowski.net>
 <e7f4f38d-b53e-8c69-8b23-454718cf92af@intel.com>
 <20200319130049.GA2244@light.dominikbrodowski.net>
 <20200319134139.GB3983@sirena.org.uk>
 <a01359dc-479e-b3e3-37a6-4a9c421d18da@intel.com>
 <20200319165157.GA2254@light.dominikbrodowski.net>
 <a7bf2aee-78e7-f905-bcc3-cd21bf16a976@intel.com>
 <20200319182413.GA3968@light.dominikbrodowski.net>
 <750f7841-0b95-9fa8-d858-e0bff4d834d5@intel.com>
From:   Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Message-ID: <f6b7c60a-d99e-c140-31d0-0b56960c3ec9@linux.intel.com>
Date:   Thu, 19 Mar 2020 14:05:56 -0500
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On 3/19/20 1:35 PM, Cezary Rojewski wrote:
> 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.

It'd be good to know why a dummy platform component is required though.