From: Jesse Brandeburg <jesse.brandeburg@intel.com>
Date: Wed, 28 Jan 2015 18:57:39 +0000 (-0800)
Subject: genirq: Fix null pointer reference in irq_set_affinity_hint()
X-Git-Tag: fixes-v4.0-rc1~93^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4fe7ffb7e17ca6ad9173b8de35f260c9c8fc2f79;p=pandora-kernel.git

genirq: Fix null pointer reference in irq_set_affinity_hint()

The recent set_affinity commit by me introduced some null
pointer dereferences on driver unload, because some drivers
call this function with a NULL argument. This fixes the issue
by just checking for null before setting the affinity mask.

Fixes: e2e64a932556 ("genirq: Set initial affinity in irq_set_affinity_hint()")
Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: netdev@vger.kernel.org
Link: http://lkml.kernel.org/r/20150128185739.9689.84588.stgit@jbrandeb-cp2.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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