Re: [PATCH] ASoC: soc-pcm: Revert "call snd_soc_component_open/close() once"

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Hi Kai, again

> > Having a single cleanup path would be easier, but I think in the end it 
> > comes down to how cleanly you can track the opened state. It seems biggest 
> > issue is how to cleanly track the component-substream pairs. Ideally we'd 
> > have a dedicated state object to represent an opened component-substream 
> > pair, but that's not how the APIs are defined now. But something to that
> > effect is needed.
> 
> Yeah, I can understand your concern, but not 100% yet.
> In my understanding, counting start vs stop is not enough but not so bad.
> If my understanding was correct, your concern is
> counting only is not enough, because wrong component-substream pair
> can be used, like this ?
> 
> 	start(substream-A); <=
> 	start(substream-B);
> 	start(substream-C);
> 
> 	stop(substream-Z);  <=
> 	stop(substream-B);
> 	stop(substream-C);
> 
> But I wonder is it really happen ?

Ohh, yes indeed !! I was confused.
But Hmm... I don't want to have substream list on each component...
Hmm... I will re-consider it again.

Thank you for your help !!
Best regards
---
Kuninori Morimoto



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