src/patches/suse-2.6.27.39/patches.arch/x2APIC_PATCH_01_0f4896665a02b465ddca59a560983b24ec28c64b

   1 From: Suresh Siddha <suresh.b.siddha@intel.com>
   2 Subject: dmar: fix dmar_parse_dev() devices_cnt error condition check
   3 References: fate #303948 and fate #303984
   4 Patch-Mainline: queued for .28
   5 Commit-ID: 0f4896665a02b465ddca59a560983b24ec28c64b
   6
   7 Signed-off-by: Thomas Renninger <trenn@suse.de>
   8
   9 It is possible that,
  10 instead of PCI endpoint/sub-hierarchy structures, only IO-APIC/HPET
  11 devices may be reported under device scope structures. Fix the devices_cnt
  12 error check, which cares about only PCI structures and removes the
  13 dma-remapping unit structure (dmaru) when the devices_cnt is zero
  14 and include_all flag is not set.
  15
  16 Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
  17 Acked-by: Yinghai Lu <yhlu.kernel@gmail.com>
  18 Signed-off-by: Ingo Molnar <mingo@elte.hu>
  19
  20 ---
  21  drivers/pci/dmar.c |    2 +-
  22  1 file changed, 1 insertion(+), 1 deletion(-)
  23
  24 Index: linux-2.6.26/drivers/pci/dmar.c
  25 ===================================================================
  26 --- linux-2.6.26.orig/drivers/pci/dmar.c
  27 +++ linux-2.6.26/drivers/pci/dmar.c
  28 @@ -212,7 +212,7 @@ dmar_parse_dev(struct dmar_drhd_unit *dm
  29                 include_all = 1;
  30         }
  31
  32 -       if (ret || (dmaru->devices_cnt == 0 && !dmaru->include_all)) {
  33 +       if (ret) {
  34                 list_del(&dmaru->list);
  35                 kfree(dmaru);
  36         }