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driver core: add local subsys_get and subsys_put functions

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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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-02-08 12:13:10 +01:00
parent fb42378dcc
commit 789be03a60
1 changed files with 13 additions and 0 deletions
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13
drivers/base/base.h
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@ -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;