Re: [PATCH 2/2] ASoC: Intel: avs: Disconnect substream if suspend or resume fails

[Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>]

On 11/10/22 10:29, Cezary Rojewski wrote:
> On 2022-11-10 5:18 PM, Pierre-Louis Bossart wrote:
>> On 11/10/22 10:06, Cezary Rojewski wrote:
> 
>>> Unless something new has been added/updated, there is no runtime->state
>>> field available. All the PCM code works with runtime->status->state.
>>
>> cd sound/
>>
>> git grep -c 'runtime->state'
>> core/compress_offload.c:27
> 
> ...
> 
>> git grep -c 'status->state'
>> core/pcm_compat.c:2
>> core/pcm_native.c:4
> 
> I see now, thanks. Commit from late September "ALSA: pcm: Avoid
> reference to status->state" add a new field. Will update the code to use
> __snd_pcm_set_state() instead.
> 
> My base did not have it yet.

Right, it's relatively recent, and my point is that the helper does use
stream locking when testing the same state you modify. Maybe that's a
red herring but I thought I'd ask.

static void snd_pcm_set_state(struct snd_pcm_substream *substream,
			      snd_pcm_state_t state)
{
	snd_pcm_stream_lock_irq(substream);
	if (substream->runtime->state != SNDRV_PCM_STATE_DISCONNECTED)
		__snd_pcm_set_state(substream->runtime, state);
	snd_pcm_stream_unlock_irq(substream);
}