977 	unsigned long oldtce;  in iommu_clear_tce()  local
982 	oldtce = ppc_md.tce_get(tbl, entry);  in iommu_clear_tce()
983 	if (oldtce & (TCE_PCI_WRITE | TCE_PCI_READ))  in iommu_clear_tce()
986 		oldtce = 0;  in iommu_clear_tce()
990 	return oldtce;  in iommu_clear_tce()
997 	unsigned long oldtce;  in iommu_clear_tces_and_put_pages()  local
1001 		oldtce = iommu_clear_tce(tbl, entry);  in iommu_clear_tces_and_put_pages()
1002 		if (!oldtce)  in iommu_clear_tces_and_put_pages()
1005 		page = pfn_to_page(oldtce >> PAGE_SHIFT);  in iommu_clear_tces_and_put_pages()
1008 			if (oldtce & TCE_PCI_WRITE)  in iommu_clear_tces_and_put_pages()
1026 	unsigned long oldtce;  in iommu_tce_build()  local
1031 	oldtce = ppc_md.tce_get(tbl, entry);  in iommu_tce_build()
1033 	if (!(oldtce & (TCE_PCI_WRITE | TCE_PCI_READ)))  in iommu_tce_build()