024f78462c
cpu_dev_init() is only called from driver_init(), which does not check its return value. Therefore make cpu_dev_init() return void. We must register the CPU subsystem, so panic if this fails. If sched_create_sysfs_power_savings_entries() fails, the damage is contained, so ignore this (as before). Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
135 lines
4.4 KiB
C
135 lines
4.4 KiB
C
#include <linux/notifier.h>
|
|
|
|
/**
|
|
* struct subsys_private - structure to hold the private to the driver core portions of the bus_type/class structure.
|
|
*
|
|
* @subsys - the struct kset that defines this subsystem
|
|
* @devices_kset - the subsystem's 'devices' directory
|
|
* @interfaces - list of subsystem interfaces associated
|
|
* @mutex - protect the devices, and interfaces lists.
|
|
*
|
|
* @drivers_kset - the list of drivers associated
|
|
* @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.
|
|
*
|
|
* @glue_dirs - "glue" directory to put in-between the parent device to
|
|
* avoid namespace conflicts
|
|
* @class - pointer back to the struct class that this structure is associated
|
|
* with.
|
|
*
|
|
* This structure is the one that is the actual kobject allowing struct
|
|
* bus_type/class to be statically allocated safely. Nothing outside of the
|
|
* driver core should ever touch these fields.
|
|
*/
|
|
struct subsys_private {
|
|
struct kset subsys;
|
|
struct kset *devices_kset;
|
|
struct list_head interfaces;
|
|
struct mutex mutex;
|
|
|
|
struct kset *drivers_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 kset glue_dirs;
|
|
struct class *class;
|
|
};
|
|
#define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj)
|
|
|
|
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)
|
|
|
|
/**
|
|
* struct device_private - structure to hold the private to the driver core portions of the device structure.
|
|
*
|
|
* @klist_children - klist containing all children of this device
|
|
* @knode_parent - node in sibling list
|
|
* @knode_driver - node in driver list
|
|
* @knode_bus - node in bus list
|
|
* @driver_data - private pointer for driver specific info. Will turn into a
|
|
* list soon.
|
|
* @device - pointer back to the struct class that this structure is
|
|
* associated with.
|
|
*
|
|
* Nothing outside of the driver core should ever touch these fields.
|
|
*/
|
|
struct device_private {
|
|
struct klist klist_children;
|
|
struct klist_node knode_parent;
|
|
struct klist_node knode_driver;
|
|
struct klist_node knode_bus;
|
|
void *driver_data;
|
|
struct device *device;
|
|
};
|
|
#define to_device_private_parent(obj) \
|
|
container_of(obj, struct device_private, knode_parent)
|
|
#define to_device_private_driver(obj) \
|
|
container_of(obj, struct device_private, knode_driver)
|
|
#define to_device_private_bus(obj) \
|
|
container_of(obj, struct device_private, knode_bus)
|
|
|
|
extern int device_private_init(struct device *dev);
|
|
|
|
/* 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 void cpu_dev_init(void);
|
|
|
|
extern int bus_add_device(struct device *dev);
|
|
extern void bus_probe_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);
|
|
static inline int driver_match_device(struct device_driver *drv,
|
|
struct device *dev)
|
|
{
|
|
return drv->bus->match ? drv->bus->match(dev, drv) : 1;
|
|
}
|
|
|
|
extern char *make_class_name(const char *name, struct kobject *kobj);
|
|
|
|
extern int devres_release_all(struct device *dev);
|
|
|
|
/* /sys/devices directory */
|
|
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
|
|
|
|
#ifdef CONFIG_DEVTMPFS
|
|
extern int devtmpfs_init(void);
|
|
#else
|
|
static inline int devtmpfs_init(void) { return 0; }
|
|
#endif
|