2  *  linux/drivers/devfreq/governor_userspace.c
14 #include <linux/devfreq.h>
25 static int devfreq_userspace_func(struct devfreq *df, unsigned long *freq)  in devfreq_userspace_func()
48 	struct devfreq *devfreq = to_devfreq(dev);  in store_freq()  local
53 	mutex_lock(&devfreq->lock);  in store_freq()
54 	data = devfreq->data;  in store_freq()
59 	err = update_devfreq(devfreq);  in store_freq()
62 	mutex_unlock(&devfreq->lock);  in store_freq()
69 	struct devfreq *devfreq = to_devfreq(dev);  in show_freq()  local
73 	mutex_lock(&devfreq->lock);  in show_freq()
74 	data = devfreq->data;  in show_freq()
80 	mutex_unlock(&devfreq->lock);  in show_freq()
94 static int userspace_init(struct devfreq *devfreq)  in userspace_init()  argument
105 	devfreq->data = data;  in userspace_init()
107 	err = sysfs_create_group(&devfreq->dev.kobj, &dev_attr_group);  in userspace_init()
112 static void userspace_exit(struct devfreq *devfreq)  in userspace_exit()  argument
118 	if (devfreq->dev.kobj.sd)  in userspace_exit()
119 		sysfs_remove_group(&devfreq->dev.kobj, &dev_attr_group);  in userspace_exit()
121 	kfree(devfreq->data);  in userspace_exit()
122 	devfreq->data = NULL;  in userspace_exit()
125 static int devfreq_userspace_handler(struct devfreq *devfreq,  in devfreq_userspace_handler()  argument
132 		ret = userspace_init(devfreq);  in devfreq_userspace_handler()
135 		userspace_exit(devfreq);  in devfreq_userspace_handler()