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ACPI: battery: add devm_battery_hook_register()

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Add a utility function for device-managed registration of battery hooks.
The function makes it easier to manage the lifecycle of a hook.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20240630-cros_ec-charge-control-v5-1-8f649d018c52@weissschuh.net
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
This commit is contained in:
Thomas Weißschuh 2024-06-30 22:54:08 +02:00 committed by Tzung-Bi Shih
parent 5b8feca8de
commit 2681bbaa39
2 changed files with 17 additions and 0 deletions
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15
drivers/acpi/battery.c
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@ -756,6 +756,21 @@ end:
}
EXPORT_SYMBOL_GPL(battery_hook_register);
static void devm_battery_hook_unregister(void *data)
{
struct acpi_battery_hook *hook = data;
battery_hook_unregister(hook);
}
int devm_battery_hook_register(struct device *dev, struct acpi_battery_hook *hook)
{
battery_hook_register(hook);
return devm_add_action_or_reset(dev, devm_battery_hook_unregister, hook);
}
EXPORT_SYMBOL_GPL(devm_battery_hook_register);
/*
* This function gets called right after the battery sysfs
* attributes have been added, so that the drivers that

2
include/acpi/battery.h
View File

@ -2,6 +2,7 @@
#ifndef __ACPI_BATTERY_H
#define __ACPI_BATTERY_H
#include <linux/device.h>
#include <linux/power_supply.h>
#define ACPI_BATTERY_CLASS "battery"
@ -19,5 +20,6 @@ struct acpi_battery_hook {
void battery_hook_register(struct acpi_battery_hook *hook);
void battery_hook_unregister(struct acpi_battery_hook *hook);
int devm_battery_hook_register(struct device *dev, struct acpi_battery_hook *hook);
#endif