Re: [PATCH v2] gpio: pca953x: Override IRQ for one of the expanders on Galileo Gen 2

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Wed, May 27, 2020 at 07:43:28AM +0200, Linus Walleij wrote:
> On Tue, May 26, 2020 at 3:11 PM Andy Shevchenko
> <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> > On Tue, May 26, 2020 at 08:31:01AM +0300, Mika Westerberg wrote:
> > > On Mon, May 25, 2020 at 10:08:45PM +0300, Andy Shevchenko wrote:
> >
> > ...
> >
> > > > +   dev_info(dev, "Applying ACPI interrupt quirk (GPIO %d)\n", pin);
> > > > +   return gpiod_to_irq(gpio_to_desc(pin));
> > >
> > > You need to request the GPIO as well, I missed that from my example.
> >
> > How? I can't find a function to request GPIO by its descriptor in
> > include/linux/gpio/*.
> 
> If a gpiochip need to request one of its own GPIOs it should use
> gpiochip_request_own_desc()

It's not the case here.


-- 
With Best Regards,
Andy Shevchenko