From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 8 Mar 2014 07:59:58 +0000 (+0100)
Subject: genirq: Provide irq_request/release_resources chip callbacks
X-Git-Tag: v3.15-rc1~105^2~23^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c1bacbae8192dd2a9ebadd22d793b68054f6c6e5;p=pandora-kernel.git

genirq: Provide irq_request/release_resources chip callbacks

For certain irq types, e.g. gpios, it's necessary to request resources
before starting up the irq.

This might fail so we cannot use the irq_startup() callback because we
might call the irq_set_type() callback before that which does not make
sense when the resource is not available. Calling irq_startup() before
irq_set_type() can lead to spurious interrupts which is not desired
either.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1403080857160.18573@ionos.tec.linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

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