PM / devfreq: Remove unneeded extern keyword

Remove unneeded extern keyword from devfreq-related header file
and adjust the indentation of function parameter to keep the
consistency in header file
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/devfreq/governor.h

@@ -57,17 +57,16 @@ struct devfreq_governor {
 				unsigned int event, void *data);
 };
 
-extern void devfreq_monitor_start(struct devfreq *devfreq);
-extern void devfreq_monitor_stop(struct devfreq *devfreq);
-extern void devfreq_monitor_suspend(struct devfreq *devfreq);
-extern void devfreq_monitor_resume(struct devfreq *devfreq);
-extern void devfreq_interval_update(struct devfreq *devfreq,
-					unsigned int *delay);
+void devfreq_monitor_start(struct devfreq *devfreq);
+void devfreq_monitor_stop(struct devfreq *devfreq);
+void devfreq_monitor_suspend(struct devfreq *devfreq);
+void devfreq_monitor_resume(struct devfreq *devfreq);
+void devfreq_interval_update(struct devfreq *devfreq, unsigned int *delay);
 
-extern int devfreq_add_governor(struct devfreq_governor *governor);
-extern int devfreq_remove_governor(struct devfreq_governor *governor);
+int devfreq_add_governor(struct devfreq_governor *governor);
+int devfreq_remove_governor(struct devfreq_governor *governor);
 
-extern int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
+int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
 
 static inline int devfreq_update_stats(struct devfreq *df)
 {

include/linux/devfreq.h

@@ -201,24 +201,23 @@ struct devfreq_freqs {
 };
 
 #if defined(CONFIG_PM_DEVFREQ)
-extern struct devfreq *devfreq_add_device(struct device *dev,
+struct devfreq *devfreq_add_device(struct device *dev,
 				struct devfreq_dev_profile *profile,
 				const char *governor_name,
 				void *data);
-extern int devfreq_remove_device(struct devfreq *devfreq);
-extern struct devfreq *devm_devfreq_add_device(struct device *dev,
+int devfreq_remove_device(struct devfreq *devfreq);
+struct devfreq *devm_devfreq_add_device(struct device *dev,
 				struct devfreq_dev_profile *profile,
 				const char *governor_name,
 				void *data);
-extern void devm_devfreq_remove_device(struct device *dev,
-				  struct devfreq *devfreq);
+void devm_devfreq_remove_device(struct device *dev, struct devfreq *devfreq);
 
 /* Supposed to be called by PM callbacks */
-extern int devfreq_suspend_device(struct devfreq *devfreq);
-extern int devfreq_resume_device(struct devfreq *devfreq);
+int devfreq_suspend_device(struct devfreq *devfreq);
+int devfreq_resume_device(struct devfreq *devfreq);
 
-extern void devfreq_suspend(void);
-extern void devfreq_resume(void);
+void devfreq_suspend(void);
+void devfreq_resume(void);
 
 /**
  * update_devfreq() - Reevaluate the device and configure frequency
@@ -226,35 +225,34 @@ extern void devfreq_resume(void);
  *
  * Note: devfreq->lock must be held
  */
-extern int update_devfreq(struct devfreq *devfreq);
+int update_devfreq(struct devfreq *devfreq);
 
 /* Helper functions for devfreq user device driver with OPP. */
-extern struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
+struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
 				unsigned long *freq, u32 flags);
-extern int devfreq_register_opp_notifier(struct device *dev,
+int devfreq_register_opp_notifier(struct device *dev,
 				struct devfreq *devfreq);
-extern int devfreq_unregister_opp_notifier(struct device *dev,
+int devfreq_unregister_opp_notifier(struct device *dev,
 				struct devfreq *devfreq);
-extern int devm_devfreq_register_opp_notifier(struct device *dev,
+int devm_devfreq_register_opp_notifier(struct device *dev,
 				struct devfreq *devfreq);
-extern void devm_devfreq_unregister_opp_notifier(struct device *dev,
+void devm_devfreq_unregister_opp_notifier(struct device *dev,
 				struct devfreq *devfreq);
-extern int devfreq_register_notifier(struct devfreq *devfreq,
+int devfreq_register_notifier(struct devfreq *devfreq,
 				struct notifier_block *nb,
 				unsigned int list);
-extern int devfreq_unregister_notifier(struct devfreq *devfreq,
+int devfreq_unregister_notifier(struct devfreq *devfreq,
 				struct notifier_block *nb,
 				unsigned int list);
-extern int devm_devfreq_register_notifier(struct device *dev,
+int devm_devfreq_register_notifier(struct device *dev,
 				struct devfreq *devfreq,
 				struct notifier_block *nb,
 				unsigned int list);
-extern void devm_devfreq_unregister_notifier(struct device *dev,
+void devm_devfreq_unregister_notifier(struct device *dev,
 				struct devfreq *devfreq,
 				struct notifier_block *nb,
 				unsigned int list);
-extern struct devfreq *devfreq_get_devfreq_by_phandle(struct device *dev,
-						int index);
+struct devfreq *devfreq_get_devfreq_by_phandle(struct device *dev, int index);
 
 #if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND)
 /**