Commit ff32e599 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

ACPI: bus: Introduce acpi_dev_for_each_child_reverse() 



Make it possible to walk the children of an ACPI device in the revese
order by defining acpi_dev_for_each_child_reverse() in analogy with
acpi_dev_for_each_child().

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 0ea3ef24

drivers/acpi/bus.c

+12 −0
Original line number Diff line number Diff line
@@ -1115,6 +1115,18 @@ int acpi_dev_for_each_child(struct acpi_device *adev, 
	return device_for_each_child(&adev->dev, &adwc, acpi_dev_for_one_check);

}



int acpi_dev_for_each_child_reverse(struct acpi_device *adev,

				    int (*fn)(struct acpi_device *, void *),

				    void *data)

{

	struct acpi_dev_walk_context adwc = {

		.fn = fn,

		.data = data,

	};



	return device_for_each_child_reverse(&adev->dev, &adwc, acpi_dev_for_one_check);

}



/* --------------------------------------------------------------------------

                             Initialization/Cleanup

   -------------------------------------------------------------------------- */

include/acpi/acpi_bus.h

+3 −0
Original line number Diff line number Diff line
@@ -483,6 +483,9 @@ extern struct bus_type acpi_bus_type; 
int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);

int acpi_dev_for_each_child(struct acpi_device *adev,

			    int (*fn)(struct acpi_device *, void *), void *data);

int acpi_dev_for_each_child_reverse(struct acpi_device *adev,

				    int (*fn)(struct acpi_device *, void *),

				    void *data);



/*

 * Events