BUSDMA_MD_BUS
error = bd_md_add_seg(md, BUSDMA_MD_BUS, ioc.u.md.bus_addr, len);
bd_md_del_segs(md, BUSDMA_MD_BUS, 0);
error = bd_md_add_seg(md, BUSDMA_MD_BUS, ioc.u.md.bus_addr,
bd_md_del_segs(md, BUSDMA_MD_BUS, 0);
if (space != BUSDMA_MD_BUS && space != BUSDMA_MD_PHYS &&