Commit 789be03a authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

driver core: add local subsys_get and subsys_put functions 

We need to control the reference count of the subsys private structure
instead of directly manipulating the kset reference count of it, so wrap
that logic up in a subsys_get() and subsys_put() function to make it more
obvious as to what is happening.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230208111330.439504-2-gregkh@linuxfoundation.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fb42378d

drivers/base/base.h

+13 −0
Original line number Diff line number Diff line
@@ -57,6 +57,19 @@ struct subsys_private { 
};

#define to_subsys_private(obj) container_of_const(obj, struct subsys_private, subsys.kobj)



static inline struct subsys_private *subsys_get(struct subsys_private *sp)

{

	if (sp)

		kset_get(&sp->subsys);

	return sp;

}



static inline void subsys_put(struct subsys_private *sp)

{

	if (sp)

		kset_put(&sp->subsys);

}



struct driver_private {

	struct kobject kobj;

	struct klist klist_devices;