linux-kernel - Re: [PATCH 4/8] ACPI: platform_profile: Add a list to platform profile handler

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Message-ID: <dc490fa5-c02b-46d9-a9ef-271181756407@redhat.com>
Date: Sat, 26 Oct 2024 12:07:18 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Mario Limonciello <mario.limonciello@....com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: "Rafael J . Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>,
 Maximilian Luz <luzmaximilian@...il.com>, Lee Chun-Yi <jlee@...e.com>,
 Shyam Sundar S K <Shyam-sundar.S-k@....com>,
 Corentin Chary <corentin.chary@...il.com>, "Luke D . Jones"
 <luke@...nes.dev>, Ike Panhc <ike.pan@...onical.com>,
 Henrique de Moraes Holschuh <hmh@....eng.br>,
 Alexis Belmonte <alexbelm48@...il.com>,
 Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
 Ai Chao <aichao@...inos.cn>, Gergo Koteles <soyer@....hu>,
 open list <linux-kernel@...r.kernel.org>,
 "open list:ACPI" <linux-acpi@...r.kernel.org>,
 "open list:MICROSOFT SURFACE PLATFORM PROFILE DRIVER"
 <platform-driver-x86@...r.kernel.org>,
 "open list:THINKPAD ACPI EXTRAS DRIVER"
 <ibm-acpi-devel@...ts.sourceforge.net>,
 Mark Pearson <mpearson-lenovo@...ebb.ca>,
 Matthew Schwartz <matthew.schwartz@...ux.dev>
Subject: Re: [PATCH 4/8] ACPI: platform_profile: Add a list to platform
 profile handler

Hi,

On 25-Oct-24 9:30 PM, Mario Limonciello wrote:
> In order to prepare for having support for multiple platform handlers
> a list will be needed to iterate over them for various platform
> profile handler calls.
> 
> Tested-by: Matthew Schwartz <matthew.schwartz@...ux.dev>
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans

> ---
>  drivers/acpi/platform_profile.c  | 5 ++++-
>  include/linux/platform_profile.h | 1 +
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
> index c24744da20916..0c60fc970b6e8 100644
> --- a/drivers/acpi/platform_profile.c
> +++ b/drivers/acpi/platform_profile.c
> @@ -10,6 +10,7 @@
>  #include <linux/sysfs.h>
>  
>  static struct platform_profile_handler *cur_profile;
> +static LIST_HEAD(platform_profile_handler_list);
>  static DEFINE_MUTEX(profile_lock);
>  
>  static const char * const profile_names[] = {
> @@ -198,6 +199,7 @@ int platform_profile_register(struct platform_profile_handler *pprof)
>  		mutex_unlock(&profile_lock);
>  		return err;
>  	}
> +	list_add_tail(&pprof->list, &platform_profile_handler_list);
>  
>  	cur_profile = pprof;
>  	mutex_unlock(&profile_lock);
> @@ -207,8 +209,9 @@ EXPORT_SYMBOL_GPL(platform_profile_register);
>  
>  int platform_profile_remove(struct platform_profile_handler *pprof)
>  {
> -	sysfs_remove_group(acpi_kobj, &platform_profile_group);
> +	list_del(&pprof->list);
>  
> +	sysfs_remove_group(acpi_kobj, &platform_profile_group);
>  	mutex_lock(&profile_lock);
>  	cur_profile = NULL;
>  	mutex_unlock(&profile_lock);
> diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
> index 58279b76d740e..9ded63a9ae6f1 100644
> --- a/include/linux/platform_profile.h
> +++ b/include/linux/platform_profile.h
> @@ -29,6 +29,7 @@ enum platform_profile_option {
>  struct platform_profile_handler {
>  	const char *name;
>  	unsigned long choices[BITS_TO_LONGS(PLATFORM_PROFILE_LAST)];
> +	struct list_head list;
>  	int (*profile_get)(struct platform_profile_handler *pprof,
>  				enum platform_profile_option *profile);
>  	int (*profile_set)(struct platform_profile_handler *pprof,