subsys_interface 312 include/linux/device.h int (*add_dev)(struct device *dev, struct subsys_interface *sif); subsys_interface 313 include/linux/device.h int (*remove_dev)(struct device *dev, struct subsys_interface *sif); subsys_interface 316 include/linux/device.h int subsys_interface_register(struct subsys_interface *sif); subsys_interface 317 include/linux/device.h void subsys_interface_unregister(struct subsys_interface *sif);