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x86/amd-iommu: Fix possible integer overflow

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The variable i in this function could be increased to over
2**32 which would result in an integer overflow when using
int. Fix it by changing i to unsigned long.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel
2010-01-22 16:40:20 +01:00
parent 92dcffb916
commit d91afd15b0
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/amd_iommu.c
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@@ -980,7 +980,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,
{ {
int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT; int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT;
struct amd_iommu *iommu; struct amd_iommu *iommu;
int i; unsigned long i;
#ifdef CONFIG_IOMMU_STRESS #ifdef CONFIG_IOMMU_STRESS
populate = false; populate = false;