* [PATCH] kernel/locking/lockdep.c: mark chainhashentry as __maybe_unused
@ 2016-02-03 22:05 Arnd Bergmann
0 siblings, 0 replies; only message in thread
From: Arnd Bergmann @ 2016-02-03 22:05 UTC (permalink / raw)
To: Andrew Morton
Cc: linux-arm-kernel, Arnd Bergmann, Mike Krinkin, Andrey Ryabinin,
Ingo Molnar, Peter Zijlstra, Ingo Molnar, linux-kernel
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 <arnd@arndb.de>
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))
lockdep_init();
--
2.7.0
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