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x86/amd-iommu: Fix possible integer overflow

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commit d91afd15b0 upstream.

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.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Joerg Roedel
2010-01-22 16:40:20 +01:00
committed by Greg Kroah-Hartman
parent d1a31038aa
commit 253f887cc8
1 changed files with 1 additions and 1 deletions
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arch/x86/kernel/amd_iommu.c
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@@ -540,7 +540,7 @@ static void flush_all_devices_for_iommu(struct amd_iommu *iommu)
static void flush_devices_by_domain(struct protection_domain *domain)
{
struct amd_iommu *iommu;
int i;
unsigned long i;
for (i = 0; i <= amd_iommu_last_bdf; ++i) {
if ((domain == NULL && amd_iommu_pd_table[i] == NULL) ||