diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
index 2512eabbf4ac..68aee56e2231 100644
--- a/drivers/iommu/sun50i-iommu.c
+++ b/drivers/iommu/sun50i-iommu.c
@@ -272,7 +272,7 @@ static u32 sun50i_mk_pte(phys_addr_t page, int prot)
 	enum sun50i_iommu_aci aci;
 	u32 flags = 0;
 
-	if (prot & (IOMMU_READ | IOMMU_WRITE))
+	if ((prot & (IOMMU_READ | IOMMU_WRITE)) == (IOMMU_READ | IOMMU_WRITE))
 		aci = SUN50I_IOMMU_ACI_RD_WR;
 	else if (prot & IOMMU_READ)
 		aci = SUN50I_IOMMU_ACI_RD;