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Subject[PATCH 3/4] iommu/tegra-smmu: Fix iova->phys translation
Date
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(-)

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)
--
2.17.1
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