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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-08 12:13:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-09 10:42:57 +0100 |
| commit | 789be03a600842ef461968cc5a2d458f51f319b2 (patch) | |
| tree | 931ba69e3827398471652589432ab138a0f0584e /drivers/base | |
| parent | mtd: mtdpart: Don't create platform device that'll never probe (diff) | |
| download | linux-789be03a600842ef461968cc5a2d458f51f319b2.tar.xz linux-789be03a600842ef461968cc5a2d458f51f319b2.zip | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/base.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h index 0e806f641079..9e06c18c7a64 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -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; |