#include <linux/pm.h>
#include <linux/pm_legacy.h>
#include <linux/interrupt.h>
+#include <linux/mutex.h>
int pm_active;
* until a resume but that will be fine.
*/
-static DECLARE_MUTEX(pm_devs_lock);
+static DEFINE_MUTEX(pm_devs_lock);
static LIST_HEAD(pm_devs);
/**
dev->id = id;
dev->callback = callback;
- down(&pm_devs_lock);
+ mutex_lock(&pm_devs_lock);
list_add(&dev->entry, &pm_devs);
- up(&pm_devs_lock);
+ mutex_unlock(&pm_devs_lock);
}
return dev;
}
-/**
- * pm_unregister - unregister a device with power management
- * @dev: device to unregister
- *
- * Remove a device from the power management notification lists. The
- * dev passed must be a handle previously returned by pm_register.
- */
-
-void pm_unregister(struct pm_dev *dev)
-{
- if (dev) {
- down(&pm_devs_lock);
- list_del(&dev->entry);
- up(&pm_devs_lock);
-
- kfree(dev);
- }
-}
-
-static void __pm_unregister(struct pm_dev *dev)
-{
- if (dev) {
- list_del(&dev->entry);
- kfree(dev);
- }
-}
-
-/**
- * pm_unregister_all - unregister all devices with matching callback
- * @callback: callback function pointer
- *
- * Unregister every device that would call the callback passed. This
- * is primarily meant as a helper function for loadable modules. It
- * enables a module to give up all its managed devices without keeping
- * its own private list.
- */
-
-void pm_unregister_all(pm_callback callback)
-{
- struct list_head *entry;
-
- if (!callback)
- return;
-
- down(&pm_devs_lock);
- entry = pm_devs.next;
- while (entry != &pm_devs) {
- struct pm_dev *dev = list_entry(entry, struct pm_dev, entry);
- entry = entry->next;
- if (dev->callback == callback)
- __pm_unregister(dev);
- }
- up(&pm_devs_lock);
-}
-
/**
* pm_send - send request to a single device
* @dev: device to send to
{
struct list_head *entry;
- down(&pm_devs_lock);
+ mutex_lock(&pm_devs_lock);
entry = pm_devs.next;
while (entry != &pm_devs) {
struct pm_dev *dev = list_entry(entry, struct pm_dev, entry);
*/
if (rqst == PM_SUSPEND)
pm_undo_all(dev);
- up(&pm_devs_lock);
+ mutex_unlock(&pm_devs_lock);
return status;
}
}
entry = entry->next;
}
- up(&pm_devs_lock);
+ mutex_unlock(&pm_devs_lock);
return 0;
}
EXPORT_SYMBOL(pm_register);
-EXPORT_SYMBOL(pm_unregister);
-EXPORT_SYMBOL(pm_unregister_all);
EXPORT_SYMBOL(pm_send_all);
EXPORT_SYMBOL(pm_active);