This is a note to let you know that I've just added the patch titled
ACPI: PM: Add acpi_device_fix_up_power_children() function
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-pm-add-acpi_device_fix_up_power_children-function.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 37ba91a82e3b9de35f64348c62b5ec7d74e3a41c Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Sun, 12 Nov 2023 21:36:26 +0100
Subject: ACPI: PM: Add acpi_device_fix_up_power_children() function
From: Hans de Goede <hdegoede@xxxxxxxxxx>
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 <hdegoede@xxxxxxxxxx>
Cc: 6.6+ <stable@xxxxxxxxxxxxxxx> # 6.6+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/device_pm.c | 13 +++++++++++++
include/acpi/acpi_bus.h | 1 +
2 files changed, 14 insertions(+)
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -397,6 +397,19 @@ void acpi_device_fix_up_power_extended(s
}
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;
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -539,6 +539,7 @@ int acpi_device_set_power(struct acpi_de
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);
Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are
queue-6.6/acpi-resource-skip-irq-override-on-asus-expertbook-b1402cva.patch
queue-6.6/acpi-pm-add-acpi_device_fix_up_power_children-function.patch
queue-6.6/acpi-video-use-acpi_device_fix_up_power_children.patch
