On Mon, Jun 25, 2012 at 04:48:21AM +0000, 함명주 wrote:

> > +	/* Microphone detection can't use idle mode */
> > +	pm_runtime_get(info->dev);

> Is it alright to use asynchronous get here?
> (sync not required?)

Yes, it's OK to do this - we're guaranteed that the device is already
enabled at the time we decide to start the microphone detection (as
we're in the middle of examining the state which needs a runtime
reference).  We're taking an additional reference here so that the
device doesn't get powered off again after the event has been handled.

> > +	ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_RISE,
> > +				  "JACKDET rise", arizona_jackdet, info);

> Is this arizone_request_irq using threaded irq? (it's fine if so)

Yes.