releases/3.1.1/iommu-amd-fix-wrong-shift-direction.patch

   1 From fcd0861db1cf4e6ed99f60a815b7b72c2ed36ea4 Mon Sep 17 00:00:00 2001
   2 From: Joerg Roedel <joerg.roedel@amd.com>
   3 Date: Tue, 11 Oct 2011 17:41:32 +0200
   4 Subject: iommu/amd: Fix wrong shift direction
   5
   6 From: Joerg Roedel <joerg.roedel@amd.com>
   7
   8 commit fcd0861db1cf4e6ed99f60a815b7b72c2ed36ea4 upstream.
   9
  10 The shift direction was wrong because the function takes a
  11 page number and i is the address is the loop.
  12
  13 Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
  14 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  15
  16 ---
  17  drivers/iommu/amd_iommu.c |    2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/drivers/iommu/amd_iommu.c
  21 +++ b/drivers/iommu/amd_iommu.c
  22 @@ -1283,7 +1283,7 @@ static int alloc_new_range(struct dma_op
  23                 if (!pte || !IOMMU_PTE_PRESENT(*pte))
  24                         continue;
  25
  26 -               dma_ops_reserve_addresses(dma_dom, i << PAGE_SHIFT, 1);
  27 +               dma_ops_reserve_addresses(dma_dom, i >> PAGE_SHIFT, 1);
  28         }
  29
  30         update_domain(&dma_dom->domain);