[PATCH v2 04/15] ACPI: platform_profile: Add a list to platform profile handler

[Mario Limonciello <mario.limonciello@amd.com>]

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@linux.dev>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.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