On Fri, Aug 5, 2011 at 12:30 PM, Ben Dooks [off-list ref] wrote:

On Fri, Aug 05, 2011 at 10:40:17AM +0100, Russell King - ARM Linux wrote:

quoted

Trying to go from IRQ to GPIO is not a good idea - most of the
IRQ <-> GPIO macros we have today are just plain broken. ?Many of them
just add or subtract a constant, which means non-GPIO IRQs have an
apparant GPIO number too. ?Couple this with the fact that all positive
GPIO numbers are valid, and this is a recipe for wrong GPIOs getting
used and GPIOs being requested for non-GPIO IRQs.

Yes, and there's a pile without these defined/

And I'm piling a few patches *deleting* irq_to_gpio() from platforms that
define but actually don't use it, like U300 and SA1100.

Linus Walleij