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

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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>
This commit is contained in:
Rafael J. Wysocki
2013-10-17 15:44:48 +02:00
parent b08fc109ce
commit 2421ad48f4
3 changed files with 0 additions and 64 deletions
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56
drivers/acpi/device_pm.c
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@@ -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 */