From: Daniel J Blueman <daniel.blueman@gmail.com>
Date: Wed, 18 May 2011 23:31:31 +0000 (-0700)
Subject: x86, ioapic: Fix potential resume deadlock
X-Git-Tag: v2.6.39.1~90
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f76923c73aad9b726825e70d07f49a572938dc80;p=pandora-kernel.git

x86, ioapic: Fix potential resume deadlock

commit b64ce24daffb634b5b3133a2e411bd4de50654e8 upstream.

Fix a potential deadlock when resuming; here the calling
function has disabled interrupts, so we cannot sleep.

Change the memory allocation flag from GFP_KERNEL to GFP_ATOMIC.

TODO: We can do away with this memory allocation during resume
      by reusing the ioapic suspend/resume code that uses boot time
      allocated buffers, but we want to keep this -stable patch
      simple.

Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/20110518233157.385970138@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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