ARM_SMMU_FEAT_E2H
if (smmu->features & ARM_SMMU_FEAT_E2H) {
if (master->smmu->features & ARM_SMMU_FEAT_E2H) {
if (smmu->features & ARM_SMMU_FEAT_E2H)
smmu->features |= ARM_SMMU_FEAT_E2H;