dev_pm_opp_unregister_notifier 1553 drivers/devfreq/devfreq.c 	return dev_pm_opp_unregister_notifier(dev, &devfreq->nb);
dev_pm_opp_unregister_notifier 2191 drivers/opp/core.c EXPORT_SYMBOL(dev_pm_opp_unregister_notifier);
dev_pm_opp_unregister_notifier  121 include/linux/pm_opp.h int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb);