From: Yinghai Lu <yhlu.kernel@gmail.com>
Date: Mon, 15 Sep 2008 08:53:50 +0000 (-0700)
Subject: irq: fix irqpoll && sparseirq
X-Git-Tag: v2.6.28-rc1~80^2~37
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e00585bb7fc3d0b601181b765a254df7ff4ea59b;p=pandora-kernel.git

irq: fix irqpoll && sparseirq

Steven Noonan reported a boot hang when using irqpoll and
CONFIG_HAVE_SPARSE_IRQ=y.

The irqpoll loop needs to be updated to not iterate from 1 to nr_irqs
but to iterate via for_each_irq_desc(). (in the former case desc can
be NULL which crashes the box)

Reported-by: Steven Noonan <steven@uplinklabs.net>
Tested-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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