linux-kernel - Re: [PATCH v3 1/5] ACPI: battery: add devm_battery_hook

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Date: Thu, 13 Jun 2024 21:33:56 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>, 
	Sebastian Reichel <sre@...nel.org>, Thomas Weißschuh <thomas@...ssschuh.net>, 
	"Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
	Robert Moore <robert.moore@...el.com>, Tzung-Bi Shih <tzungbi@...nel.org>, 
	chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	linux-pm@...r.kernel.org, Mario Limonciello <mario.limonciello@....com>, 
	Dustin Howett <dustin@...ett.net>, Stephen Horvath <s.horvath@...look.com.au>, 
	Rajas Paranjpe <paranjperajas@...il.com>, linux-acpi@...r.kernel.org, 
	acpica-devel@...ts.linux.dev, Matt Hartley <matt.hartley@...il.com>
Subject: Re: [PATCH v3 1/5] ACPI: battery: add devm_battery_hook_register()

On Mon, Jun 10, 2024 at 5:52 PM Thomas Weißschuh <linux@...ssschuh.net> wrote:
>
> Add a utility function for device-managed registration of battery hooks.
> The function makes it easier to manage the lifecycle of a hook.
>
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>

Please feel free to add

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

to this patch and route it along with the rest of the series as needed.

Thanks!

> ---
>  drivers/acpi/battery.c | 15 +++++++++++++++
>  include/acpi/battery.h |  2 ++
>  2 files changed, 17 insertions(+)
>
> diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
> index b379401ff1c2..6ea979f76f84 100644
> --- a/drivers/acpi/battery.c
> +++ b/drivers/acpi/battery.c
> @@ -756,6 +756,21 @@ void battery_hook_register(struct acpi_battery_hook *hook)
>  }
>  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
> diff --git a/include/acpi/battery.h b/include/acpi/battery.h
> index 611a2561a014..c93f16dfb944 100644
> --- a/include/acpi/battery.h
> +++ b/include/acpi/battery.h
> @@ -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
>
> --
> 2.45.2
>
>