From: Andreas Larsson <andreas@gaisler.com>
Date: Tue, 30 Oct 2012 00:09:46 +0000 (+0000)
Subject: sparc32, leon: Check for existent irq_map entry in leon_handle_ext_irq
X-Git-Tag: v3.7-rc5~2^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20424d85f8a07090fd32c6fad343f91b63c730b0;p=pandora-kernel.git

sparc32, leon: Check for existent irq_map entry in leon_handle_ext_irq

If an irq is being unlinked concurrently with leon_handle_ext_irq,
irq_map[eirq] might be null in leon_handle_ext_irq. Make sure that
this is not dereferenced.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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