PM / OPP: Don't expose srcu_head to register notifiers
Let the OPP core provide helpers to register notifiers for any device,
instead of exposing srcu_head outside of the core.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 47206a2..a545c0f 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -1265,18 +1265,7 @@
*/
int devfreq_register_opp_notifier(struct device *dev, struct devfreq *devfreq)
{
- struct srcu_notifier_head *nh;
- int ret = 0;
-
- rcu_read_lock();
- nh = dev_pm_opp_get_notifier(dev);
- if (IS_ERR(nh))
- ret = PTR_ERR(nh);
- rcu_read_unlock();
- if (!ret)
- ret = srcu_notifier_chain_register(nh, &devfreq->nb);
-
- return ret;
+ return dev_pm_opp_register_notifier(dev, &devfreq->nb);
}
EXPORT_SYMBOL(devfreq_register_opp_notifier);
@@ -1292,18 +1281,7 @@
*/
int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq)
{
- struct srcu_notifier_head *nh;
- int ret = 0;
-
- rcu_read_lock();
- nh = dev_pm_opp_get_notifier(dev);
- if (IS_ERR(nh))
- ret = PTR_ERR(nh);
- rcu_read_unlock();
- if (!ret)
- ret = srcu_notifier_chain_unregister(nh, &devfreq->nb);
-
- return ret;
+ return dev_pm_opp_unregister_notifier(dev, &devfreq->nb);
}
EXPORT_SYMBOL(devfreq_unregister_opp_notifier);