From: Guenter Roeck <linux@xxxxxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 35d04077ad96ed33ceea2501f5a4f1eacda77218 upstream.
The definition of atomic_dec_if_positive() assumes that
atomic_sub_if_positive() exists, which is only the case if
metag specific atomics are used. This results in the following
build error when trying to build metag1_defconfig.
kernel/ucount.c: In function 'dec_ucount':
kernel/ucount.c:211: error:
implicit declaration of function 'atomic_sub_if_positive'
Moving the definition of atomic_dec_if_positive() into the metag
conditional code fixes the problem.
Fixes: 6006c0d8ce94 ("metag: Atomics, locks and bitops")
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
arch/metag/include/asm/atomic.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/metag/include/asm/atomic.h b/arch/metag/include/asm/atomic.h
index 307ecd2bd9a1..d7d6b9e53e44 100644
--- a/arch/metag/include/asm/atomic.h
+++ b/arch/metag/include/asm/atomic.h
@@ -38,6 +38,7 @@
#define atomic_dec(v) atomic_sub(1, (v))
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+#define atomic_dec_if_positive(v) atomic_sub_if_positive(1, v)
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()
@@ -46,8 +47,6 @@
#endif
-#define atomic_dec_if_positive(v) atomic_sub_if_positive(1, v)
-
#include <asm-generic/atomic64.h>
#endif /* __ASM_METAG_ATOMIC_H */
--
2.10.2
--
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