ACPI / PM: Drop two functions that are not used any more

Two functions defined in device_pm.c, acpi_dev_pm_add_dependent()
and acpi_dev_pm_remove_dependent(), have no callers and may be
dropped, so drop them.

Moreover, they are the only functions adding entries to and removing
entries from the power_dependent list in struct acpi_device, so drop
that list too.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 59d3202f6b36fc197afe259b343764cb2a9621aa..a94383d1f3502ae35138e7e677df02c1d8df3d72 100644 (file)
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -1025,60 +1025,4 @@ void acpi_dev_pm_detach(struct device *dev, bool power_off)
        }
 }
 EXPORT_SYMBOL_GPL(acpi_dev_pm_detach);
-
-/**
- * acpi_dev_pm_add_dependent - Add physical device depending for PM.
- * @handle: Handle of ACPI device node.
- * @depdev: Device depending on that node for PM.
- */
-void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev)
-{
-       struct acpi_device_physical_node *dep;
-       struct acpi_device *adev;
-
-       if (!depdev || acpi_bus_get_device(handle, &adev))
-               return;
-
-       mutex_lock(&adev->physical_node_lock);
-
-       list_for_each_entry(dep, &adev->power_dependent, node)
-               if (dep->dev == depdev)
-                       goto out;
-
-       dep = kzalloc(sizeof(*dep), GFP_KERNEL);
-       if (dep) {
-               dep->dev = depdev;
-               list_add_tail(&dep->node, &adev->power_dependent);
-       }
-
- out:
-       mutex_unlock(&adev->physical_node_lock);
-}
-EXPORT_SYMBOL_GPL(acpi_dev_pm_add_dependent);
-
-/**
- * acpi_dev_pm_remove_dependent - Remove physical device depending for PM.
- * @handle: Handle of ACPI device node.
- * @depdev: Device depending on that node for PM.
- */
-void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev)
-{
-       struct acpi_device_physical_node *dep;
-       struct acpi_device *adev;
-
-       if (!depdev || acpi_bus_get_device(handle, &adev))
-               return;
-
-       mutex_lock(&adev->physical_node_lock);
-
-       list_for_each_entry(dep, &adev->power_dependent, node)
-               if (dep->dev == depdev) {
-                       list_del(&dep->node);
-                       kfree(dep);
-                       break;
-               }
-
-       mutex_unlock(&adev->physical_node_lock);
-}
-EXPORT_SYMBOL_GPL(acpi_dev_pm_remove_dependent);
 #endif /* CONFIG_PM */

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 407ad13cac2f27945c3b812f791a4f615c2db492..fee8a297c7d95310caa64492b75e6c2fae0c280e 100644 (file)
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -999,7 +999,6 @@ int acpi_device_add(struct acpi_device *device,
        INIT_LIST_HEAD(&device->wakeup_list);
        INIT_LIST_HEAD(&device->physical_node_list);
        mutex_init(&device->physical_node_lock);
-       INIT_LIST_HEAD(&device->power_dependent);
 
        new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
        if (!new_bus_id) {

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 02e113bb8b7d5c777fdc435a5285208238ce66e9..d9019821aa6020e1c6d974856edfb404cb81d8c8 100644 (file)
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -311,7 +311,6 @@ struct acpi_device {
        unsigned int physical_node_count;
        struct list_head physical_node_list;
        struct mutex physical_node_lock;
-       struct list_head power_dependent;
        void (*remove)(struct acpi_device *);
 };
 
@@ -456,8 +455,6 @@ acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
                                    acpi_notify_handler handler);
 int acpi_pm_device_sleep_state(struct device *, int *, int);
-void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
-void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
 #else
 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
                                               acpi_notify_handler handler,
@@ -478,10 +475,6 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
        return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
                m : ACPI_STATE_D0;
 }
-static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
-                                            struct device *depdev) {}
-static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
-                                               struct device *depdev) {}
 #endif
 
 #ifdef CONFIG_PM_RUNTIME