extern int scsi_add_device(struct Scsi_Host *host, uint channel,
uint target, uint lun);
extern void scsi_remove_device(struct scsi_device *);
-extern int scsi_device_cancel(struct scsi_device *, int);
extern int scsi_device_get(struct scsi_device *);
extern void scsi_device_put(struct scsi_device *);