iommu/io-pgtable-arm-v7s: Fix attributes when splitting blocks

[karo-tx-linux.git] / drivers / iommu / io-pgtable-arm-v7s.c

diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
index 8c6139986d7d38f8be2ff3984978d813db56af24..def8ca1c982d5869a358ca69467a6f13763c46fb 100644 (file)
--- a/drivers/iommu/io-pgtable-arm-v7s.c
+++ b/drivers/iommu/io-pgtable-arm-v7s.c
@@ -286,12 +286,14 @@ static int arm_v7s_pte_to_prot(arm_v7s_iopte pte, int lvl)
        int prot = IOMMU_READ;
        arm_v7s_iopte attr = pte >> ARM_V7S_ATTR_SHIFT(lvl);
 
-       if (attr & ARM_V7S_PTE_AP_RDONLY)
+       if (!(attr & ARM_V7S_PTE_AP_RDONLY))
                prot |= IOMMU_WRITE;
        if ((attr & (ARM_V7S_TEX_MASK << ARM_V7S_TEX_SHIFT)) == 0)
                prot |= IOMMU_MMIO;
        else if (pte & ARM_V7S_ATTR_C)
                prot |= IOMMU_CACHE;
+       if (pte & ARM_V7S_ATTR_XN(lvl))
+               prot |= IOMMU_NOEXEC;
 
        return prot;
 }