Patch "frv: add missing atomic64 operations" has been added to the 4.9-stable tree

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

frv: add missing atomic64 operations

to the 4.9-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:
frv-add-missing-atomic64-operations.patch
and it can be found in the queue-4.9 subdirectory.

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

From: Sudip Mukherjee <[email protected]>
Date: Tue, 24 Jan 2017 15:18:43 -0800
Subject: frv: add missing atomic64 operations

From: Sudip Mukherjee <[email protected]>

[ Upstream commit 4180c4c170a5a33b9987b314d248a9d572d89ab0 ]

Some more atomic64 operations were missing and as a result frv allmodconfig was failing. Add the missing operations.

---
 arch/frv/include/asm/atomic.h |   19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

@@ -139,7 +139,7 @@ static inline void atomic64_dec(atomic64
 #define atomic64_sub_and_test(i,v)	(atomic64_sub_return((i), (v)) == 0)
 #define atomic64_dec_and_test(v)	(atomic64_dec_return((v)) == 0)
 #define atomic64_inc_and_test(v)	(atomic64_inc_return((v)) == 0)
-
+#define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)
 
 #define atomic_cmpxchg(v, old, new)	(cmpxchg(&(v)->counter, old, new))
 #define atomic_xchg(v, new)		(xchg(&(v)->counter, new))

@@ -177,6 +177,23 @@ static inline int atomic64_add_unless(at
 	return c != u;
 }
 
+static inline long long atomic64_dec_if_positive(atomic64_t *v)
+{
+	long long c, old, dec;
+
+	c = atomic64_read(v);
+	for (;;) {
+		dec = c - 1;
+		if (unlikely(dec < 0))
+			break;
+		old = atomic64_cmpxchg((v), c, dec);
+		if (likely(old == c))
+			break;
+		c = old;
+	}
+		return dec;
+}
+
 #define ATOMIC_OP(op)							\
 static inline int atomic_fetch_##op(int i, atomic_t *v)			\
 {									\

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

queue-4.9/frv-add-missing-atomic64-operations.patch queue-4.9/frv-add-atomic64_add_unless.patch