iommu/arm-smmu: Fix broken ATOS check

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

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index e2a788eea5ed810607476aa9b8097d8f4d012e34..4cd0c29cb585000c0e5899651948ad1dc2ffbf1f 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -246,7 +246,7 @@
 #define FSYNR0_WNR                     (1 << 4)
 
 static int force_stage;
-module_param_named(force_stage, force_stage, int, S_IRUGO | S_IWUSR);
+module_param_named(force_stage, force_stage, int, S_IRUGO);
 MODULE_PARM_DESC(force_stage,
        "Force SMMU mappings to be installed at a particular stage of translation. A value of '1' or '2' forces the corresponding stage. All other values are ignored (i.e. no stage is forced). Note that selecting a specific stage will disable support for nested translation.");
 
@@ -1566,7 +1566,7 @@ static int arm_smmu_device_cfg_probe(struct arm_smmu_device *smmu)
                return -ENODEV;
        }
 
-       if ((id & ID0_S1TS) && ((smmu->version == 1) || (id & ID0_ATOSNS))) {
+       if ((id & ID0_S1TS) && ((smmu->version == 1) || !(id & ID0_ATOSNS))) {
                smmu->features |= ARM_SMMU_FEAT_TRANS_OPS;
                dev_notice(smmu->dev, "\taddress translation ops\n");
        }