[PATCH] lib: add s390 to atomic64_dec_if_positive archs

[Heiko Carstens]

From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>

Add s390 to list of architectures that have atomic64_dec_if_positive
implemented so we get rid of this warning:

lib/atomic64_test.c:129:2: warning: #warning Please implement
atomic64_dec_if_positive for your architecture, and add it to the IF above

Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Luca Barbieri <luca@xxxxxxxxxxxxxxxxx>
---
 lib/atomic64_test.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -112,7 +112,8 @@ static __init int test_atomic64(void)
 	r += one;
 	BUG_ON(v.counter != r);
 
-#if defined(CONFIG_X86) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(_ASM_GENERIC_ATOMIC64_H)
+#if defined(CONFIG_X86) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
+    defined(CONFIG_S390) || defined(_ASM_GENERIC_ATOMIC64_H)
 	INIT(onestwos);
 	BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
 	r -= one;
--
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