From: Toshi Kani <toshi.kani@hp.com>
Date: Sun, 1 Apr 2012 03:37:02 +0000 (-0600)
Subject: cpuidle: Fix panic in CPU off-lining with no idle driver
X-Git-Tag: v3.4-rc2~5^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee01e663373343c63e0e3d364d09f6155378dbcc;p=pandora-kernel.git

cpuidle: Fix panic in CPU off-lining with no idle driver

Fix a NULL pointer dereference panic in cpuidle_play_dead() during
CPU off-lining when no cpuidle driver is registered.  A cpuidle
driver may be registered at boot-time based on CPU type.  This patch
allows an off-lined CPU to enter HLT-based idle in this condition.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Cc: Boris Ostrovsky <boris.ostrovsky@amd.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Tested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

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