diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/device.h | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 80a63939f924..03c7d995e96c 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -56,6 +56,7 @@ struct bus_type { char * name; rwlock_t lock; atomic_t refcount; + u32 present; struct list_head node; struct list_head devices; @@ -73,14 +74,9 @@ struct bus_type { extern int bus_register(struct bus_type * bus); +extern void bus_unregister(struct bus_type * bus); -static inline struct bus_type * get_bus(struct bus_type * bus) -{ - BUG_ON(!atomic_read(&bus->refcount)); - atomic_inc(&bus->refcount); - return bus; -} - +extern struct bus_type * get_bus(struct bus_type * bus); extern void put_bus(struct bus_type * bus); extern int bus_for_each_dev(struct bus_type * bus, void * data, |