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From: anarsoul@gmail.com (Vasily Khoruzhick)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ASoC: sun4i-i2s: don't try to start up or shut down DAI if it's active
Date: Fri, 12 Oct 2018 09:28:56 -0700	[thread overview]
Message-ID: <7437935.iAfLsdZGOz@anarsoul-thinkpad> (raw)
In-Reply-To: <20181012160905.GA2340@sirena.org.uk>

On Friday, October 12, 2018 9:09:05 AM PDT Mark Brown wrote:
> 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.

I guess. I'm not sure why this code was put into startup and shutdown 
callbacks in first place.

Maybe Marcus or Maxime know?

As for configuration - only bus clock is necessary for configuration and it's 
already enabled in runtime_resume() callback.

  reply	other threads:[~2018-10-12 16:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-12 15:32 [PATCH] ASoC: sun4i-i2s: don't try to start up or shut down DAI if it's active Vasily Khoruzhick
2018-10-12 16:09 ` Mark Brown
2018-10-12 16:28   ` Vasily Khoruzhick [this message]
2018-10-12 16:45     ` Mark Brown
2018-10-15  8:11     ` Maxime Ripard
2018-10-15 15:13       ` Vasily Khoruzhick

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