diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 77eb3edf6bf3..7efa867e4aea 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -1344,83 +1344,6 @@ struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
 EXPORT_SYMBOL(devfreq_recommended_opp);
 
 /**
- * devfreq_register_opp_notifier() - Helper function to get devfreq notified
- *				   for any changes in the OPP availability
- *				   changes
- * @dev:	The devfreq user device. (parent of devfreq)
- * @devfreq:	The devfreq object.
- */
-int devfreq_register_opp_notifier(struct device *dev, struct devfreq *devfreq)
-{
-	return dev_pm_opp_register_notifier(dev, &devfreq->nb);
-}
-EXPORT_SYMBOL(devfreq_register_opp_notifier);
-
-/**
- * devfreq_unregister_opp_notifier() - Helper function to stop getting devfreq
- *				     notified for any changes in the OPP
- *				     availability changes anymore.
- * @dev:	The devfreq user device. (parent of devfreq)
- * @devfreq:	The devfreq object.
- *
- * At exit() callback of devfreq_dev_profile, this must be included if
- * devfreq_recommended_opp is used.
- */
-int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq)
-{
-	return dev_pm_opp_unregister_notifier(dev, &devfreq->nb);
-}
-EXPORT_SYMBOL(devfreq_unregister_opp_notifier);
-
-static void devm_devfreq_opp_release(struct device *dev, void *res)
-{
-	devfreq_unregister_opp_notifier(dev, *(struct devfreq **)res);
-}
-
-/**
- * devm_ devfreq_register_opp_notifier()
- *		- Resource-managed devfreq_register_opp_notifier()
- * @dev:	The devfreq user device. (parent of devfreq)
- * @devfreq:	The devfreq object.
- */
-int devm_devfreq_register_opp_notifier(struct device *dev,
-				       struct devfreq *devfreq)
-{
-	struct devfreq **ptr;
-	int ret;
-
-	ptr = devres_alloc(devm_devfreq_opp_release, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return -ENOMEM;
-
-	ret = devfreq_register_opp_notifier(dev, devfreq);
-	if (ret) {
-		devres_free(ptr);
-		return ret;
-	}
-
-	*ptr = devfreq;
-	devres_add(dev, ptr);
-
-	return 0;
-}
-EXPORT_SYMBOL(devm_devfreq_register_opp_notifier);
-
-/**
- * devm_devfreq_unregister_opp_notifier()
- *		- Resource-managed devfreq_unregister_opp_notifier()
- * @dev:	The devfreq user device. (parent of devfreq)
- * @devfreq:	The devfreq object.
- */
-void devm_devfreq_unregister_opp_notifier(struct device *dev,
-					 struct devfreq *devfreq)
-{
-	WARN_ON(devres_release(dev, devm_devfreq_opp_release,
-			       devm_devfreq_dev_match, devfreq));
-}
-EXPORT_SYMBOL(devm_devfreq_unregister_opp_notifier);
-
-/**
  * devfreq_register_notifier() - Register a driver with devfreq
  * @devfreq:	The devfreq object.
  * @nb:		The notifier block to register.
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 49f68929e024..a144d7ae066e 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -444,13 +444,6 @@ static int exynos_bus_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	/* Register opp_notifier to catch the change of OPP  */
-	ret = devm_devfreq_register_opp_notifier(dev, bus->devfreq);
-	if (ret < 0) {
-		dev_err(dev, "failed to register opp notifier\n");
-		goto err;
-	}
-
 	/*
 	 * Enable devfreq-event to get raw data which is used to determine
 	 * current bus load.
diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c
index 1b89ebbad02c..4fb1041b628e 100644
--- a/drivers/devfreq/rk3399_dmc.c
+++ b/drivers/devfreq/rk3399_dmc.c
@@ -435,7 +435,6 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
 					   &data->ondemand_data);
 	if (IS_ERR(data->devfreq))
 		return PTR_ERR(data->devfreq);
-	devm_devfreq_register_opp_notifier(dev, data->devfreq);
 
 	data->dev = dev;
 	platform_set_drvdata(pdev, data);
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index 597294e0cc40..d6f054545799 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -189,14 +189,6 @@ extern void devm_devfreq_remove_device(struct device *dev,
 /* Helper functions for devfreq user device driver with OPP. */
 extern struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
 					   unsigned long *freq, u32 flags);
-extern int devfreq_register_opp_notifier(struct device *dev,
-					 struct devfreq *devfreq);
-extern int devfreq_unregister_opp_notifier(struct device *dev,
-					   struct devfreq *devfreq);
-extern int devm_devfreq_register_opp_notifier(struct device *dev,
-					      struct devfreq *devfreq);
-extern void devm_devfreq_unregister_opp_notifier(struct device *dev,
-						struct devfreq *devfreq);
 extern int devfreq_register_notifier(struct devfreq *devfreq,
 					struct notifier_block *nb,
 					unsigned int list);
@@ -310,29 +302,6 @@ static inline struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
 	return ERR_PTR(-EINVAL);
 }
 
-static inline int devfreq_register_opp_notifier(struct device *dev,
-					 struct devfreq *devfreq)
-{
-	return -EINVAL;
-}
-
-static inline int devfreq_unregister_opp_notifier(struct device *dev,
-					   struct devfreq *devfreq)
-{
-	return -EINVAL;
-}
-
-static inline int devm_devfreq_register_opp_notifier(struct device *dev,
-						     struct devfreq *devfreq)
-{
-	return -EINVAL;
-}
-
-static inline void devm_devfreq_unregister_opp_notifier(struct device *dev,
-							struct devfreq *devfreq)
-{
-}
-
 static inline int devfreq_register_notifier(struct devfreq *devfreq,
 					struct notifier_block *nb,
 					unsigned int list)
