457 	tmp->devices = tmp->cad = NULL;  in parport_register_port()
992 	if (port->cad == dev) {  in parport_unregister_device()
1119 	if (port->cad == dev) {  in parport_claim()
1127 	oldcad = port->cad;  in parport_claim()
1136 		if (port->cad != oldcad) {  in parport_claim()
1144 			if (port->cad)  in parport_claim()
1168 	port->cad = dev;  in parport_claim()
1273 		if (dev->port->physport->cad != dev)  in parport_claim_or_block()
1275 			       dev->name, dev->port->physport->cad ?  in parport_claim_or_block()
1276 			       dev->port->physport->cad->name:"nobody");  in parport_claim_or_block()
1301 	if (port->cad != dev) {  in parport_release()
1322 	port->cad = NULL;  in parport_release()
1341 			if (dev->port->cad) /* racy but no matter */  in parport_release()
1353 	for (pd = port->devices; !port->cad && pd; pd = pd->next) {  in parport_release()