[alsa-devel] DPCM: skip DAPM_STREAM_STOP event to BE, if still used by other FE

[Mark Brown]

On Tue, May 31, 2016 at 01:45:32PM +0800, Kai Chieh Chuang wrote:

> +		/* don't sent stop event if this BE is used by other FE */
> +		if (event == SND_SOC_DAPM_STREAM_STOP &&
> +		    be->dpcm[dir].users >= 1) {
> +			pr_warn("kc, %s(), be->dai_link->name %s skip stop event\n",
> __func__, be->dai_link->name);
> +			continue;
> +		}
> +
>  		snd_soc_dapm_stream_event(be, dir, event);
>  	}

If this isn't happening that seems like a bug, I'm a bit surprised
nobody else ran into it?  Shouldn't the counts of stream events that
happen be symmetric (ie, we get as many stops as starts), or are we
possibly missing some from things being switched in and out or something?
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