kernel/locking/lockdep.c: mark chainhashentry as __maybe_unused

Message ID
State New
Headers show

Commit Message

Arnd Bergmann Feb. 3, 2016, 10:05 p.m.
The newly added chainhashentry() function is only use when
CONFIG_PROVE_LOCKING is enabled, otherwise we get a warning about it.

kernel/locking/lockdep.c:318:26: error: 'chainhashentry' defined but not used [-Werror=unused-function]

We could add another #ifdef or add __maybe_unused to avoid the warning,
this patch picks the second option.

Signed-off-by: Arnd Bergmann <>

Fixes: a33a23c7def8 ("kernel/locking/lockdep.c: make lockdep initialize itself on demand")
 kernel/locking/lockdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)



diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 9269b1a74260..0d3c08d23946 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -315,7 +315,7 @@  static inline struct list_head *classhashentry(struct lockdep_subclass_key *key)
 static struct list_head __chainhash_table[CHAINHASH_SIZE];
-static struct list_head *chainhashentry(unsigned long chain)
+static __maybe_unused struct list_head * chainhashentry(unsigned long chain)
 	if (unlikely(!lockdep_initialized))