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SubjectRe: [PATCH 1/6] gpiolib: Allow GPIO chips to request their own GPIOs
On Wed, Feb 26, 2014 at 02:47:58PM +0100, Rafael J. Wysocki wrote:
> > Sounds good. Only thing I'm not sure about is the fact that
> > __gpiod_request() releases the lock when it calls chip driver callbacks
> > (and takes it back of course). Is that acceptable practice to take the lock
> > outside of a function and release it inside for a while?
>
> Yes, you can do that.
>
> There even are sparse annotations for that: __releases() and __acquires()
> (__rpm_callback() in drivers/base/power/runtime.c uses them among other things).

Ah, good to know. Thanks!


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