drivers/base/base.h

/**
 * struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure.
 *
 * @subsys - the struct kset that defines this bus.  This is the main kobject
 * @drivers_kset - the list of drivers associated with this bus
 * @devices_kset - the list of devices associated with this bus
 * @klist_devices - the klist to iterate over the @devices_kset
 * @klist_drivers - the klist to iterate over the @drivers_kset
 * @bus_notifier - the bus notifier list for anything that cares about things
 * on this bus.
 * @bus - pointer back to the struct bus_type that this structure is associated
 * with.
 *
 * This structure is the one that is the actual kobject allowing struct
 * bus_type to be statically allocated safely.  Nothing outside of the driver
 * core should ever touch these fields.
 */
struct bus_type_private {
	struct kset subsys;
	struct kset *drivers_kset;
	struct kset *devices_kset;
	struct klist klist_devices;
	struct klist klist_drivers;
	struct blocking_notifier_head bus_notifier;
	unsigned int drivers_autoprobe:1;
	struct bus_type *bus;
};

struct driver_private {
	struct kobject kobj;
	struct klist klist_devices;
	struct klist_node knode_bus;
	struct module_kobject *mkobj;
	struct device_driver *driver;
};
#define to_driver(obj) container_of(obj, struct driver_private, kobj)

/* initialisation functions */
extern int devices_init(void);
extern int buses_init(void);
extern int classes_init(void);
extern int firmware_init(void);
#ifdef CONFIG_SYS_HYPERVISOR
extern int hypervisor_init(void);
#else
static inline int hypervisor_init(void) { return 0; }
#endif
extern int platform_bus_init(void);
extern int system_bus_init(void);
extern int cpu_dev_init(void);

extern int bus_add_device(struct device *dev);
extern void bus_attach_device(struct device *dev);
extern void bus_remove_device(struct device *dev);

extern int bus_add_driver(struct device_driver *drv);
extern void bus_remove_driver(struct device_driver *drv);

extern void driver_detach(struct device_driver *drv);
extern int driver_probe_device(struct device_driver *drv, struct device *dev);

extern void sysdev_shutdown(void);
extern int sysdev_suspend(pm_message_t state);
extern int sysdev_resume(void);

static inline struct class_device *to_class_dev(struct kobject *obj)
{
	return container_of(obj, struct class_device, kobj);
}

static inline
struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
{
	return container_of(_attr, struct class_device_attribute, attr);
}

extern char *make_class_name(const char *name, struct kobject *kobj);

extern int devres_release_all(struct device *dev);

extern struct kset *devices_kset;

#if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
extern void module_add_driver(struct module *mod, struct device_driver *drv);
extern void module_remove_driver(struct device_driver *drv);
#else
static inline void module_add_driver(struct module *mod,
				     struct device_driver *drv) { }
static inline void module_remove_driver(struct device_driver *drv) { }
#endif