X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Famd_iommu.c;h=a7b6dec6fc3f4afc72f57651b1523156d415431b;hb=b8d9905d025d80a2357e8ce4704fde2923f6a1bd;hp=3133a0ea09ff021196309d76dc7c6a6f0b1293b8;hpb=8ad909c4c1b91bd35ba6a2af5e7ab3fc8d9fe283;p=linux-2.6-omap-h63xx.git

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 3133a0ea09f..a7b6dec6fc3 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);