From: Yinghai Lu <yinghai@kernel.org>
Date: Mon, 9 Feb 2009 00:18:03 +0000 (-0800)
Subject: irq: clear kstat_irqs
X-Git-Tag: v2.6.30-rc1~3^2~10^3~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f3c2a89c1451cdf6328f99977bd9decd4f708e1;p=pandora-kernel.git

irq: clear kstat_irqs

Impact: get correct kstat_irqs [/proc/interrupts] for msi/msi-x etc

need to call clear_kstat_irqs(), so when we reuse that irq_desc,
we get correct kstat in /proc/interrupts.

This makes /proc/interrupts not have <NULL> entries.

Don't need to worry about arch that doesn't support genirq, because they
will not call dynamic_irq_cleanup().

v2: simplify and make clear_kstat_irqs more robust

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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