Re: [PATCH] RFC: interrupt consistency check for OF GPIO IRQs

[Alexander Holler]

And another small update. ;)

Am 11.09.2013 09:16, schrieb Alexander Holler:

> > To summarize what happens if a driver uses a gpio as irq:
> >
> > gpio_request() // This works only if the gpio was not requested before
> > gpio_direction_input()
> > gpio_to_irq() // This needs an irq-mapping
> > request_threaded_irq()
> >
> > So I would suggest multiple steps to change that:
> >
> > 1. Create a mapping for every gpio found in DT (or all gpios if no DT is
> > used). I think that is what Linus patch does (sorry, I haven't really
> > followed this thread and didn't look in deep at the patch).
> >
> > 2. Implement gpio_request_for_irq()
> > This would just be a small macro for gpio_request();
> > gpio_direction_input()

I would add gpio_to_irq() to that macro, so that it returns the irq 
number or zero if something failed.

Regards,

Alexander Holler

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