437 	struct uart_pmac_port *uap_a;  in pmz_interrupt()  local
443 	uap_a = pmz_get_port_A(uap);  in pmz_interrupt()
444 	uap_b = uap_a->mate;  in pmz_interrupt()
446 	spin_lock(&uap_a->port.lock);  in pmz_interrupt()
447 	r3 = read_zsreg(uap_a, R3);  in pmz_interrupt()
455 		if (!ZS_IS_OPEN(uap_a)) {  in pmz_interrupt()
459 		write_zsreg(uap_a, R0, RES_H_IUS);  in pmz_interrupt()
460 		zssync(uap_a);		  in pmz_interrupt()
462 			pmz_status_handle(uap_a);  in pmz_interrupt()
464 			push = pmz_receive_chars(uap_a);  in pmz_interrupt()
466 			pmz_transmit_chars(uap_a);  in pmz_interrupt()
470 	spin_unlock(&uap_a->port.lock);  in pmz_interrupt()