454 	tmp->devices = tmp->cad = NULL;  in parport_register_port()
985 	if (port->cad == dev) {  in parport_unregister_device()
1107 	if (port->cad == dev) {  in parport_claim()
1115 	if ((oldcad = port->cad) != NULL) {  in parport_claim()
1123 		if (port->cad != oldcad) {  in parport_claim()
1129 			if (port->cad)  in parport_claim()
1153 	port->cad = dev;  in parport_claim()
1252 		if (dev->port->physport->cad != dev)  in parport_claim_or_block()
1255 			       dev->port->physport->cad ?  in parport_claim_or_block()
1256 			       dev->port->physport->cad->name:"nobody");  in parport_claim_or_block()
1280 	if (port->cad != dev) {  in parport_release()
1301 	port->cad = NULL;  in parport_release()
1318 			if (dev->port->cad) /* racy but no matter */  in parport_release()
1328 	for (pd = port->devices; (port->cad == NULL) && pd; pd = pd->next) {  in parport_release()