driver model: convert bus drivers to use kobjects and sysfs.

- create bus subsystem and register on start up.
- add struct subsystem to struct bus type to get it in the object hierarchy.
- add device and driver subsystems to struct bus type to give it hierarchy
  like it previously had.
- convert bus show()/store() callbacks to know about struct kobject.
- convert bus file creation/removal to use struct kobject.
- create symlinks from to device directories, like they had in driverfs.

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index ca7bf83886ed..66d4f313a809 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -66,6 +66,9 @@ struct bus_type {
 	atomic_t		refcount;
 	u32			present;
 
+	struct subsystem	subsys;
+	struct subsystem	drvsubsys;
+	struct subsystem	devsubsys;
 	struct list_head	node;
 	struct list_head	devices;
 	struct list_head	drivers;