From: Prarit Bhargava <prarit@redhat.com>
Date: Tue, 27 Apr 2010 15:24:42 +0000 (-0400)
Subject: x86: Fix NULL pointer access in irq_force_complete_move() for Xen guests
X-Git-Tag: v2.6.34-rc7~25^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bbd391a15d82e14efe9d69ba64cadb855b061dba;p=pandora-kernel.git

x86: Fix NULL pointer access in irq_force_complete_move() for Xen guests

Upstream PV guests fail to boot because of a NULL pointer in
irq_force_complete_move().  It is possible that xen guests have
irq_desc->chip_data = NULL.

Test for NULL chip_data pointer before attempting to complete an irq move.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
LKML-Reference: <20100427152434.16193.49104.sendpatchset@prarit.bos.redhat.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org> [2.6.33]
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