diff mbox series

[v2,06/15] ACPI: platform_profile: Use guard(mutex) for register/unregister

Message ID 20241028020131.8031-7-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 
guard(mutex) can be used to automatically release mutexes when going
out of scope.

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 | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index c20256bb39579..100d6ffb10cdb 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -186,34 +186,29 @@  int platform_profile_register(struct platform_profile_handler *pprof)
 		return -EINVAL;
 	}
 
-	mutex_lock(&profile_lock);
+	guard(mutex)(&profile_lock);
 	/* We can only have one active profile */
-	if (cur_profile) {
-		mutex_unlock(&profile_lock);
+	if (cur_profile)
 		return -EEXIST;
-	}
 
 	err = sysfs_create_group(acpi_kobj, &platform_profile_group);
-	if (err) {
-		mutex_unlock(&profile_lock);
+	if (err)
 		return err;
-	}
 	list_add_tail(&pprof->list, &platform_profile_handler_list);
 
 	cur_profile = pprof;
-	mutex_unlock(&profile_lock);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(platform_profile_register);
 
 int platform_profile_remove(struct platform_profile_handler *pprof)
 {
+	guard(mutex)(&profile_lock);
+
 	list_del(&pprof->list);
 
 	sysfs_remove_group(acpi_kobj, &platform_profile_group);
-	mutex_lock(&profile_lock);
 	cur_profile = NULL;
-	mutex_unlock(&profile_lock);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(platform_profile_remove);