Patch "metag: Only define atomic_dec_if_positive conditionally" has been added to the 4.8-stable tree

This is a note to let you know that I've just added the patch titled

metag: Only define atomic_dec_if_positive conditionally

to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
metag-only-define-atomic_dec_if_positive-conditionally.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Guenter Roeck <[email protected]>
Date: Fri, 7 Oct 2016 10:40:59 -0700
Subject: metag: Only define atomic_dec_if_positive conditionally

From: Guenter Roeck <[email protected]>

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.

---
 arch/metag/include/asm/atomic.h |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

@@ -39,11 +39,10 @@
 #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)
 
 #endif
 
-#define atomic_dec_if_positive(v)       atomic_sub_if_positive(1, v)
-
 #include <asm-generic/atomic64.h>
 
 #endif /* __ASM_METAG_ATOMIC_H */

Patches currently in stable-queue which might be from [email protected] are

queue-4.8/watchdog-rt2880_wdt-remove-assignment-of-dev-pointer.patch queue-4.8/pstore-core-drop-cmpxchg-based-updates.patch queue-4.8/watchdog-mt7621_wdt-remove-assignment-of-dev-pointer.patch queue-4.8/metag-only-define-atomic_dec_if_positive-conditionally.patch