From: Will Deacon <will.deacon@arm.com>
Date: Mon, 14 Mar 2011 13:00:30 +0000 (+0100)
Subject: ARM: 6806/1: irq: introduce entry and exit functions for chained handlers
X-Git-Tag: v2.6.39-rc1~463^2~2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10a8c3839810ac9af1aec836d61b92e7a879f5fa;p=pandora-kernel.git

ARM: 6806/1: irq: introduce entry and exit functions for chained handlers

Some chained IRQ handlers are written to cope with primary chips of
potentially different flow types. Whether this a sensible thing to do
is a point of contention.

This patch introduces entry/exit functions for chained handlers which
infer the flow type of the primary chip as fasteoi or level-type by
checking whether or not the ->irq_eoi function pointer is present and
calling back to the primary chip as necessary. Other methods of flow
control are not considered.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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