838 	if (port->cad == dev) {  in parport_unregister_device()
962 	if (port->cad == dev) {  in parport_claim()
969 	oldcad = port->cad;  in parport_claim()
978 		if (port->cad != oldcad) {  in parport_claim()
985 			if (port->cad)  in parport_claim()
1009 	port->cad = dev;  in parport_claim()
1115 		if (dev->port->physport->cad != dev)  in parport_claim_or_block()
1117 			       dev->name, dev->port->physport->cad ?  in parport_claim_or_block()
1118 			       dev->port->physport->cad->name : "nobody");  in parport_claim_or_block()
1143 	if (port->cad != dev) {  in parport_release()
1164 	port->cad = NULL;  in parport_release()
1183 			if (dev->port->cad) /* racy but no matter */  in parport_release()
1196 	for (pd = port->devices; !port->cad && pd; pd = pd->next) {  in parport_release()