dev_pm_opp_unregister_notifier 2175 drivers/opp/core.c int dev_pm_opp_unregister_notifier(struct device *dev,
dev_pm_opp_unregister_notifier  260 include/linux/pm_opp.h static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb)