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PM / OPP: Don't expose srcu_head to register notifiers

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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>
This commit is contained in:
Viresh Kumar
2017-01-02 14:41:03 +05:30
committed by Rafael J. Wysocki
parent 3aa26a3b2e
commit dc2c9ad52a
3 changed files with 63 additions and 45 deletions
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26
drivers/devfreq/devfreq.c
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@@ -1265,18 +1265,7 @@ EXPORT_SYMBOL(devfreq_recommended_opp);
*/
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 @@ EXPORT_SYMBOL(devfreq_register_opp_notifier);
*/
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);