Subject: [PATCH v2 06/45] reboot: Warn if unregister_restart_handler() fails

From: Dmitry Osipenko <[email-masked]>
Date: Thu, 28 Oct 2021 00:16:36 +0300

Emit warning if unregister_restart_handler() fails since it never should
fail. This will ease further API development by catching mistakes early.

Signed-off-by: Dmitry Osipenko <[email-masked]>
---
 kernel/reboot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/reboot.c b/kernel/reboot.c
index d39e599c3c99..291d44082f42 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -210,7 +210,7 @@ EXPORT_SYMBOL(register_restart_handler);
  */
 int unregister_restart_handler(struct notifier_block *nb)
 {
-	return atomic_notifier_chain_unregister(&restart_handler_list, nb);
+	return WARN_ON(atomic_notifier_chain_unregister(&restart_handler_list, nb));
 }
 EXPORT_SYMBOL(unregister_restart_handler);
 
-- 
2.33.1