[3/4] iommu/tegra-smmu: Fix iova->phys translation
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Message ID 20191220002914.19043-4-nicoleotsuka@gmail.com
State New
Headers show
Series
  • iommu/tegra-smmu: A set of small fixes
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Commit Message

Nicolin Chen Dec. 20, 2019, 12:29 a.m. UTC
IOVA might not be always 4KB aligned. So tegra_smmu_iova_to_phys
function needs to add on the lower 12-bit offset from input iova.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
---
 drivers/iommu/tegra-smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 5594b47a88bf..3999ecb63cfa 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -721,7 +721,7 @@  static phys_addr_t tegra_smmu_iova_to_phys(struct iommu_domain *domain,
 
 	pfn = *pte & as->smmu->pfn_mask;
 
-	return SMMU_PFN_PHYS(pfn);
+	return SMMU_PFN_PHYS(pfn) + SMMU_OFFSET_IN_PAGE(iova);
 }
 
 static struct tegra_smmu *tegra_smmu_find(struct device_node *np)