diff options
Diffstat (limited to 'drivers/base/base.h')
| -rw-r--r-- | drivers/base/base.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h index 0a5f055dffb..b676f8f801f 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -63,6 +63,32 @@ struct class_private { #define to_class(obj) \ container_of(obj, struct class_private, class_subsys.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 + * @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; + 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) + /* initialisation functions */ extern int devices_init(void); extern int buses_init(void); |