iommu/amd: Fix wrong shift direction

joergroedel · joergroedel · commit fcd0861db1cf · 2011-10-11T17:41:32.000+02:00
The shift direction was wrong because the function takes a
page number and i is the address is the loop.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel &lt;joerg.roedel@amd.com&gt;
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
@@ -1283,7 +1283,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,
 		if (!pte || !IOMMU_PTE_PRESENT(*pte))
 			continue;
 
-		dma_ops_reserve_addresses(dma_dom, i << PAGE_SHIFT, 1);
+		dma_ops_reserve_addresses(dma_dom, i >> PAGE_SHIFT, 1);
 	}
 
 	update_domain(&dma_dom->domain);

Original file line number	Diff line number	Diff line change
`@@ -1283,7 +1283,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,`
`1283`	`1283`	`if (!pte \|\| !IOMMU_PTE_PRESENT(*pte))`
`1284`	`1284`	`continue;`
`1285`	`1285`
`1286`		`- dma_ops_reserve_addresses(dma_dom, i << PAGE_SHIFT, 1);`
	`1286`	`+ dma_ops_reserve_addresses(dma_dom, i >> PAGE_SHIFT, 1);`
`1287`	`1287`	`}`
`1288`	`1288`
`1289`	`1289`	`update_domain(&dma_dom->domain);`