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@xxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
drivers/acpi/platform_profile.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
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);
--
2.43.0
