diff --git a/[refs] b/[refs]
index cda5cefdcfd0..3e609a5c5e0b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f0f0c9ac2051e5da4afa1f3f908ace197a4de80e
+refs/heads/master: 4c374af5fdee4bc6b4f5ea96c1a0f0ad7d3566be
diff --git a/trunk/arch/powerpc/kernel/dma-iommu.c b/trunk/arch/powerpc/kernel/dma-iommu.c
index 2d7bb8ced136..e4897523de41 100644
--- a/trunk/arch/powerpc/kernel/dma-iommu.c
+++ b/trunk/arch/powerpc/kernel/dma-iommu.c
@@ -83,11 +83,10 @@ static int dma_iommu_dma_supported(struct device *dev, u64 mask)
 		return 0;
 	}
 
-	if ((tbl->it_offset + tbl->it_size) > (mask >> IOMMU_PAGE_SHIFT)) {
-		dev_info(dev, "Warning: IOMMU window too big for device mask\n");
-		dev_info(dev, "mask: 0x%08llx, table end: 0x%08lx\n",
-				mask, (tbl->it_offset + tbl->it_size) <<
-				IOMMU_PAGE_SHIFT);
+	if (tbl->it_offset > (mask >> IOMMU_PAGE_SHIFT)) {
+		dev_info(dev, "Warning: IOMMU offset too big for device mask\n");
+		dev_info(dev, "mask: 0x%08llx, table offset: 0x%08lx\n",
+				mask, tbl->it_offset << IOMMU_PAGE_SHIFT);
 		return 0;
 	} else
 		return 1;