x86, ioapic: Fix potential resume deadlock
authorDaniel J Blueman <daniel.blueman@gmail.com>
Wed, 18 May 2011 23:31:31 +0000 (16:31 -0700)
committerIngo Molnar <mingo@elte.hu>
Fri, 20 May 2011 11:40:41 +0000 (13:40 +0200)
commitb64ce24daffb634b5b3133a2e411bd4de50654e8
treef83c6d41c8a40e3f58a76eb97a001731b9393988
parent257313b2a87795e07a0bdf58d0fffbdba8b31051
x86, ioapic: Fix potential resume deadlock

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>
Cc: <stable@kernel.org> # v2.6.38/39
Link: http://lkml.kernel.org/r/20110518233157.385970138@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/apic/io_apic.c