541 struct comedi_device {  struct
542 	int use_count;
543 	struct comedi_driver *driver;
544 	struct comedi_8254 *pacer;
545 	void *private;
547 	struct device *class_dev;
548 	int minor;
549 	unsigned int detach_count;
550 	struct device *hw_dev;
575 	int (*open)(struct comedi_device *dev);  argument
576 	void (*close)(struct comedi_device *dev);  argument
577 	int (*insn_device_config)(struct comedi_device *dev,  argument
579 	unsigned int (*get_valid_routes)(struct comedi_device *dev,  argument