[alsa-devel] [PATCH] ASoC: sun4i-i2s: don't try to start up or shut down DAI if it's active

[Mark Brown]

On Fri, Oct 12, 2018 at 08:32:54AM -0700, Vasily Khoruzhick wrote:
> Otherwise we may end up with shutting down I2S if shutdown() was
> called for capture substream, but playback is still running.

Would it be cleaner and more robust to use runtime PM?  I'm wondering
what happens if some of the configuration stuff turns out to also need
some of the clocks for example.
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