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authorJoerg Roedel <joerg.roedel@amd.com>2008-12-08 14:40:26 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2008-12-08 14:58:55 +0100
commitb8d9905d025d80a2357e8ce4704fde2923f6a1bd (patch)
tree211d3062a9f9da39fd1cc5475a4cfba5e1ba5cd5 /arch/x86/kernel
parent8ad909c4c1b91bd35ba6a2af5e7ab3fc8d9fe283 (diff)
AMD IOMMU: __unmap_single: check for bad_dma_address instead of 0
Impact: minor fix Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/amd_iommu.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 3133a0ea09ff..a7b6dec6fc3f 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -983,7 +983,8 @@ static void __unmap_single(struct amd_iommu *iommu,
dma_addr_t i, start;
unsigned int pages;
- if ((dma_addr == 0) || (dma_addr + size > dma_dom->aperture_size))
+ if ((dma_addr == bad_dma_address) ||
+ (dma_addr + size > dma_dom->aperture_size))
return;
pages = iommu_num_pages(dma_addr, size, PAGE_SIZE);