From: David John <davidjon@xenontk.org>
Date: Mon, 4 Jan 2010 14:58:57 +0000 (+0530)
Subject: PCI: Check the node argument passed to cpumask_of_node
X-Git-Tag: v2.6.33-rc4~71^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6be954d1f91b81ca85c74792b13654069278c577;p=pandora-kernel.git

PCI: Check the node argument passed to cpumask_of_node

Commit e0cd516 "PCI: derive nearby CPUs from device's instead of bus'
NUMA information" causes an null pointer dereference when reading from
the sysfs attributes local_cpu* on Intel machines with no ACPI NUMA
proximity info, since dev->numa_node gets set to -1 for all PCI devices,
which then gets passed to cpumask_of_node.

Add a check to prevent this.

Signed-off-by: David John <davidjon@xenontk.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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