diff mbox series

[v2,07/15] ACPI: platform_profile: Only remove group when no more handler registered

Message ID 20241028020131.8031-8-mario.limonciello@amd.com (mailing list archive)
State New
Headers show
Series Add support for binding ACPI platform profile to multiple drivers | expand

Commit Message

Mario Limonciello Oct. 28, 2024, 2:01 a.m. UTC 
As multiple handlers may register for ACPI platform profile handler,
only remove the sysfs group when the last one unregisters.

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 | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 100d6ffb10cdb..ede1550170f1a 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -23,6 +23,16 @@  static const char * const profile_names[] = {
 };
 static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);
 
+static bool platform_profile_is_registered(void)
+{
+	struct list_head *pos;
+	int count = 0;
+
+	list_for_each(pos, &platform_profile_handler_list)
+		count++;
+	return count > 0;
+}
+
 static ssize_t platform_profile_choices_show(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
@@ -207,8 +217,10 @@  int platform_profile_remove(struct platform_profile_handler *pprof)
 
 	list_del(&pprof->list);
 
-	sysfs_remove_group(acpi_kobj, &platform_profile_group);
 	cur_profile = NULL;
+	if (!platform_profile_is_registered())
+		sysfs_remove_group(acpi_kobj, &platform_profile_group);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(platform_profile_remove);