releases/2.6.32.9/x86-re-get-cfg_new-in-case-reuse-move-irq_desc.patch

   1 From 37ef2a3029fde884808ff1b369677abc7dd9a79a Mon Sep 17 00:00:00 2001
   2 From: Yinghai Lu <yinghai@kernel.org>
   3 Date: Sat, 21 Nov 2009 00:23:37 -0800
   4 Subject: x86: Re-get cfg_new in case reuse/move irq_desc
   5
   6 From: Yinghai Lu <yinghai@kernel.org>
   7
   8 commit 37ef2a3029fde884808ff1b369677abc7dd9a79a upstream.
   9
  10 When irq_desc is moved, we need to make sure to use the right cfg_new.
  11
  12 Signed-off-by: Yinghai Lu <yinghai@kernel.org>
  13 LKML-Reference: <4B07A739.3030104@kernel.org>
  14 Signed-off-by: Ingo Molnar <mingo@elte.hu>
  15 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  16
  17 ---
  18  arch/x86/kernel/apic/io_apic.c |    1 +
  19  1 file changed, 1 insertion(+)
  20
  21 --- a/arch/x86/kernel/apic/io_apic.c
  22 +++ b/arch/x86/kernel/apic/io_apic.c
  23 @@ -3157,6 +3157,7 @@ unsigned int create_irq_nr(unsigned int
  24                         continue;
  25
  26                 desc_new = move_irq_desc(desc_new, node);
  27 +               cfg_new = desc_new->chip_data;
  28
  29                 if (__assign_irq_vector(new, cfg_new, apic->target_cpus()) == 0)
  30                         irq = new;