CAP_DRD
if (iommu->cap & CAP_DRD)
if (iommu->cap & CAP_DRD)
if (iommu->cap & CAP_DRD)
if (iommu->cap & CAP_DRD)
if (iommu->cap & CAP_DRD)
if (iommu->cap & CAP_DRD)
iommu->cap & CAP_DRD ? "drd " : "", /* read drain */