Commit 37ba91a8 authored by Hans de Goede's avatar Hans de Goede Committed by Rafael J. Wysocki
Browse files

ACPI: PM: Add acpi_device_fix_up_power_children() function 



In some cases it is necessary to fix-up the power-state of an ACPI
device's children without touching the ACPI device itself add
a new acpi_device_fix_up_power_children() function for this.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Cc: 6.6+ <stable@vger.kernel.org> # 6.6+
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 98b1cc82

drivers/acpi/device_pm.c

+13 −0
Original line number Diff line number Diff line
@@ -397,6 +397,19 @@ void acpi_device_fix_up_power_extended(struct acpi_device *adev) 
}

EXPORT_SYMBOL_GPL(acpi_device_fix_up_power_extended);



/**

 * acpi_device_fix_up_power_children - Force a device's children into D0.

 * @adev: Parent device object whose children's power state is to be fixed up.

 *

 * Call acpi_device_fix_up_power() for @adev's children so long as they

 * are reported as present and enabled.

 */

void acpi_device_fix_up_power_children(struct acpi_device *adev)

{

	acpi_dev_for_each_child(adev, fix_up_power_if_applicable, NULL);

}

EXPORT_SYMBOL_GPL(acpi_device_fix_up_power_children);



int acpi_device_update_power(struct acpi_device *device, int *state_p)

{

	int state;

include/acpi/acpi_bus.h

+1 −0
Original line number Diff line number Diff line
@@ -542,6 +542,7 @@ int acpi_device_set_power(struct acpi_device *device, int state); 
int acpi_bus_init_power(struct acpi_device *device);

int acpi_device_fix_up_power(struct acpi_device *device);

void acpi_device_fix_up_power_extended(struct acpi_device *adev);

void acpi_device_fix_up_power_children(struct acpi_device *adev);

int acpi_bus_update_power(acpi_handle handle, int *state_p);

int acpi_device_update_power(struct acpi_device *device, int *state_p);

bool acpi_bus_power_manageable(acpi_handle handle);