iommu_group_attr_name  601 drivers/iommu/iommu.c 		iommu_group_remove_file(group, &iommu_group_attr_name);
iommu_group_attr_name  612 drivers/iommu/iommu.c 	ret = iommu_group_create_file(group, &iommu_group_attr_name);