416 	struct uart_pmac_port *uap_b;  in pmz_interrupt()  local
422 	uap_b = uap_a->mate;  in pmz_interrupt()
449 	if (!uap_b)  in pmz_interrupt()
452 	spin_lock(&uap_b->port.lock);  in pmz_interrupt()
455 		if (!ZS_IS_OPEN(uap_b)) {  in pmz_interrupt()
459 		write_zsreg(uap_b, R0, RES_H_IUS);  in pmz_interrupt()
460 		zssync(uap_b);  in pmz_interrupt()
462 			pmz_status_handle(uap_b);  in pmz_interrupt()
464 			push = pmz_receive_chars(uap_b);  in pmz_interrupt()
466 			pmz_transmit_chars(uap_b);  in pmz_interrupt()
470 	spin_unlock(&uap_b->port.lock);  in pmz_interrupt()