[alsa-devel] [PATCH] ASoC: dapm: Fix locking during codec shutdown

Mark Brown broonie at opensource.wolfsonmicro.com
Fri Jul 6 19:20:29 CEST 2012

On Fri, Jul 06, 2012 at 06:10:13PM +0100, Liam Girdwood wrote:
> On Fri, 2012-07-06 at 17:43 +0100, Mark Brown wrote:

> > So how is suspend and resume safe, for example?  It's the same general
> > path through the PM core.

> suspend and resume are safe as they call stream_event() that holds the
> DAPM mutex.

So that's safe with regard to DAPM...  it's not the specific example
that's concerning me here so much as the fact that I don't think we're
doing anything else to make sure shutdown is safe with other things that
might be going on when shutdown is called.  There's probably a huge raft
of issues that might occur...
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