[PATCH] locking/mutex: annotate __devm_mutex_init() with __must_check

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

Unlike the non-managed mutex_init(), devm_mutex_init() can fail (for
instance: on OOM). Now that we've fixed all instances of users not
checking the return value, annotate it with __must_check to avoid this
problem in the future.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
---
 include/linux/mutex.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 2143d05116be..e194f8c22d72 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -126,7 +126,7 @@ do {							\
 
 #ifdef CONFIG_DEBUG_MUTEXES
 
-int __devm_mutex_init(struct device *dev, struct mutex *lock);
+int __must_check __devm_mutex_init(struct device *dev, struct mutex *lock);
 
 #else
 

---
base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8
change-id: 20250326-devm-mutex-must-check-8c1b94ae151f

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>