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

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Message-ID: <20241025193055.2235-5-mario.limonciello@amd.com>
Date: Fri, 25 Oct 2024 14:30:51 -0500
From: Mario Limonciello <mario.limonciello@....com>
To: Hans de Goede <hdegoede@...hat.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>,
	Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH 4/8] ACPI: platform_profile: Add a list to platform profile handler

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>
---
 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,
-- 
2.43.0