gpio: document how to make combined GPIO+irqchip drivers
authorLinus Walleij <linus.walleij@linaro.org>
Wed, 22 Jan 2014 14:00:55 +0000 (15:00 +0100)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 3 Feb 2014 08:11:57 +0000 (09:11 +0100)
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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