ARM_SMMU_OPT_CMDQ_FORCE_SYNC
if (WARN_ON(smmu->options & ARM_SMMU_OPT_CMDQ_FORCE_SYNC))
smmu->options |= ARM_SMMU_OPT_CMDQ_FORCE_SYNC;
(smmu->options & ARM_SMMU_OPT_CMDQ_FORCE_SYNC);