driver core: remove fields from struct bus_type
struct bus_type is static everywhere in the kernel. This moves the
kobject in the structure out of it, and a bunch of other private only to
the driver core fields are now moved to a private structure. This lets
us dynamically create the backing kobject properly and gives us the
chance to be able to document to users exactly how to use the struct
bus_type as there are no fields they can improperly access.
Thanks to Kay for the build fixes on this patch.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/device.h b/include/linux/device.h
index 62e695b..3f24bf4 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -35,6 +35,7 @@
struct class;
struct class_device;
struct bus_type;
+struct bus_type_private;
struct bus_attribute {
struct attribute attr;
@@ -51,15 +52,6 @@
struct bus_type {
const char * name;
-
- 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;
-
struct bus_attribute * bus_attrs;
struct device_attribute * dev_attrs;
struct driver_attribute * drv_attrs;
@@ -75,7 +67,7 @@
int (*resume_early)(struct device * dev);
int (*resume)(struct device * dev);
- unsigned int drivers_autoprobe:1;
+ struct bus_type_private *p;
};
extern int __must_check bus_register(struct bus_type * bus);