From 9b9b04eb713c461ae46c11c3b396fa436a491e9a Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 12 Nov 2023 21:36:26 +0100 Subject: [PATCH] ACPI: PM: Add acpi_device_fix_up_power_children() function commit 37ba91a82e3b9de35f64348c62b5ec7d74e3a41c upstream. 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: Hans de Goede Cc: 6.6+ # 6.6+ Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/device_pm.c | 13 +++++++++++++ include/acpi/acpi_bus.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index f007116..3b4d048 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -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; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 2546850..0b7eab0 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -539,6 +539,7 @@ 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); -- 2.7.4