From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 11 Oct 2011 15:41:32 +0000 (+0200)
Subject: iommu/amd: Fix wrong shift direction
X-Git-Tag: firefly_0821_release~3680^2~4261^2^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fcd0861db1cf4e6ed99f60a815b7b72c2ed36ea4;p=firefly-linux-kernel-4.4.55.git

iommu/amd: Fix wrong shift direction

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 <joerg.roedel@amd.com>
---

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 0e4227f457af..cc79045bc527 100644
--- 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);