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Message-Id: <20210103035706.24168-1-tiny.windzz@gmail.com>
Date: Sun, 3 Jan 2021 03:57:06 +0000
From: Yangtao Li <tiny.windzz@...il.com>
To: myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
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Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
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Subject: [PATCH 31/31] PM / devfreq: convert to devm_pm_opp_register_notifier and remove unused API
Use devm_pm_opp_* API to simplify code.
Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
drivers/devfreq/devfreq.c | 66 +--------------------------------------
include/linux/devfreq.h | 23 --------------
2 files changed, 1 insertion(+), 88 deletions(-)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 6aa10de792b3..f593f30529ec 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -2004,40 +2004,6 @@ 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()
@@ -2047,40 +2013,10 @@ static void devm_devfreq_opp_release(struct device *dev, void *res)
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;
+ return devm_pm_opp_register_notifier(dev, &devfreq->nb);
}
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.
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index b6d3bae1c74d..aca2cc4f4fa4 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -230,14 +230,8 @@ int update_devfreq(struct devfreq *devfreq);
/* Helper functions for devfreq user device driver with OPP. */
struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
unsigned long *freq, u32 flags);
-int devfreq_register_opp_notifier(struct device *dev,
- struct devfreq *devfreq);
-int devfreq_unregister_opp_notifier(struct device *dev,
- struct devfreq *devfreq);
int devm_devfreq_register_opp_notifier(struct device *dev,
struct devfreq *devfreq);
-void devm_devfreq_unregister_opp_notifier(struct device *dev,
- struct devfreq *devfreq);
int devfreq_register_notifier(struct devfreq *devfreq,
struct notifier_block *nb,
unsigned int list);
@@ -355,29 +349,12 @@ 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)
--
2.25.1
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