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    SubjectRe: [RFC PATCH 0/3] If an IRQ is a GPIO, request and configure it
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    On Fri, Aug 5, 2011 at 12:30 PM, Ben Dooks <ben-linux@fluff.org> wrote:
    > On Fri, Aug 05, 2011 at 10:40:17AM +0100, Russell King - ARM Linux wrote:
    >> 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
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