iommu/arm-smmu: Avoid build warning

[cascardo/linux.git] / drivers / iommu / arm-smmu.c

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 1d6d43b..fc13dd5 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1252,7 +1252,7 @@ static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
        } else {
                u32 reg = iova & ~0xfff;
                writel_relaxed(reg, cb_base + ARM_SMMU_CB_ATS1PR_LO);
-               reg = (iova & ~0xfff) >> 32;
+               reg = ((u64)iova & ~0xfff) >> 32;
                writel_relaxed(reg, cb_base + ARM_SMMU_CB_ATS1PR_HI);
        }