PPBPRI
error = mtx_sleep((caddr_t)bus, ppb->ppc_lock, PPBPRI |
PPBPRI | PCATCH, "ppbreq", 0);
error = mtx_sleep(ppb, ppb->ppc_lock, PPBPRI,
ppb_sleep(ppbus, ppi, PPBPRI, "ppiread", 2 * hz);
error = ppb_sleep(ppbus, ppi, PCATCH | PPBPRI, "ppiwrite", 0);
error = mtx_sleep(ppc, &ppc->ppc_lock, PPBPRI | PCATCH,
error = mtx_sleep(ppc, &ppc->ppc_lock, PPBPRI | PCATCH,