src/patches/suse-2.6.27.39/patches.arch/x86-fix-nodac

   1 From: Tejun Heo <tj@kernel.org>
   2 Subject: x86: fix iommu=nodac parameter handling
   3 References: bnc#463829
   4
   5 nodac should forbid dac not instead of enabling it.  Fix it.
   6
   7 Signed-off-by: Tejun Heo <tj@kernel.org>
   8 Signed-off-by: Tejun Heo <teheo@suse.de>
   9 ---
  10  arch/x86/kernel/pci-dma.c |    2 +-
  11  1 file changed, 1 insertion(+), 1 deletion(-)
  12
  13 Index: linux-2.6.27-SLE11_BRANCH/arch/x86/kernel/pci-dma.c
  14 ===================================================================
  15 --- linux-2.6.27-SLE11_BRANCH.orig/arch/x86/kernel/pci-dma.c
  16 +++ linux-2.6.27-SLE11_BRANCH/arch/x86/kernel/pci-dma.c
  17 @@ -175,7 +175,7 @@ static __init int iommu_setup(char *p)
  18                 if (!strncmp(p, "allowdac", 8))
  19                         forbid_dac = 0;
  20                 if (!strncmp(p, "nodac", 5))
  21 -                       forbid_dac = -1;
  22 +                       forbid_dac = 1;
  23                 if (!strncmp(p, "usedac", 6)) {
  24                         forbid_dac = -1;
  25                         return 1;