diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2024-01-09 11:57:48 +0530 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2025-01-20 09:05:51 +0530 |
| commit | b489e7946656ed67fea1a30f5103eb62a8686e04 (patch) | |
| tree | e947ccde158004797f1b6e28894d97bbb21e97b3 /drivers | |
| parent | 1d38eb7f7b26261a0b642f6e0923269c7c000a97 (diff) | |
PM / OPP: Add reference counting helpers for Rust implementation
To ensure that resources such as OPP tables or OPP nodes are not freed
while in use by the Rust implementation, it is necessary to increment
their reference count from Rust code.
This commit introduces a new helper function,
dev_pm_opp_get_opp_table_ref(), to increment the reference count of an
OPP table and declares the existing helper dev_pm_opp_get() in pm_opp.h.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/opp/core.c | 17 | ||||
| -rw-r--r-- | drivers/opp/opp.h | 1 |
2 files changed, 12 insertions, 6 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index be3291b53719..73e9a3b2f29b 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1528,11 +1528,6 @@ err: return ERR_PTR(ret); } -void _get_opp_table_kref(struct opp_table *opp_table) -{ - kref_get(&opp_table->kref); -} - static struct opp_table *_update_opp_table_clk(struct device *dev, struct opp_table *opp_table, bool getclk) @@ -1693,6 +1688,17 @@ static void _opp_table_kref_release(struct kref *kref) kfree(opp_table); } +void _get_opp_table_kref(struct opp_table *opp_table) +{ + kref_get(&opp_table->kref); +} + +void dev_pm_opp_get_opp_table_ref(struct opp_table *opp_table) +{ + _get_opp_table_kref(opp_table); +} +EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_table_ref); + void dev_pm_opp_put_opp_table(struct opp_table *opp_table) { kref_put_mutex(&opp_table->kref, _opp_table_kref_release, @@ -1727,6 +1733,7 @@ void dev_pm_opp_get(struct dev_pm_opp *opp) { kref_get(&opp->kref); } +EXPORT_SYMBOL_GPL(dev_pm_opp_get); void dev_pm_opp_put(struct dev_pm_opp *opp) { diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index 430651e7424a..5c7c81190e41 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -250,7 +250,6 @@ struct opp_table { }; /* Routines internal to opp core */ -void dev_pm_opp_get(struct dev_pm_opp *opp); bool _opp_remove_all_static(struct opp_table *opp_table); void _get_opp_table_kref(struct opp_table *opp_table); int _get_opp_count(struct opp_table *opp_table); |