ARM_SMMU_FEAT_STALLS
.features = ARM_SMMU_FEAT_STALLS | ARM_SMMU_FEAT_ATTR_TYPES_OVR
((smmu->features & ARM_SMMU_FEAT_STALLS &&
if ((smmu->features & ARM_SMMU_FEAT_STALLS &&
(smmu->features & ARM_SMMU_FEAT_STALLS)) {
smmu->features |= ARM_SMMU_FEAT_STALLS;