455 	tmp->devices = tmp->cad = NULL;  in parport_register_port()
859 	if (port->cad == dev) {  in parport_unregister_device()
983 	if (port->cad == dev) {  in parport_claim()
990 	oldcad = port->cad;  in parport_claim()
999 		if (port->cad != oldcad) {  in parport_claim()
1006 			if (port->cad)  in parport_claim()
1030 	port->cad = dev;  in parport_claim()
1136 		if (dev->port->physport->cad != dev)  in parport_claim_or_block()
1138 			       dev->name, dev->port->physport->cad ?  in parport_claim_or_block()
1139 			       dev->port->physport->cad->name : "nobody");  in parport_claim_or_block()
1164 	if (port->cad != dev) {  in parport_release()
1185 	port->cad = NULL;  in parport_release()
1204 			if (dev->port->cad) /* racy but no matter */  in parport_release()
1217 	for (pd = port->devices; !port->cad && pd; pd = pd->next) {  in parport_release()