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098'>eb1a1b0a008a384da7febb03247b92fde8191418 /arch/powerpc/kernel parent38dbfb59d1175ef458d006556061adeaa8751b72 (diff)
gpio: document how to make combined GPIO+irqchip drivers
Write a few words on how GPIO drivers supplying an irqchip should be written. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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