diff --git a/[refs] b/[refs]
index 187cbaa275bc..13a87082568f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d1c9ae6d1e7b95cedc8e39e8949e795379a0669e
+refs/heads/master: 28aecb9d7728dc26bf03ce7925fe622023a83a2a
diff --git a/trunk/net/key/af_key.c b/trunk/net/key/af_key.c
index 4744b1f6372f..e2aacf0ba013 100644
--- a/trunk/net/key/af_key.c
+++ b/trunk/net/key/af_key.c
@@ -3019,12 +3019,11 @@ static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, struct km_e
 static u32 get_acqseq(void)
 {
 	u32 res;
-	static u32 acqseq;
-	static DEFINE_SPINLOCK(acqseq_lock);
+	static atomic_t acqseq;
 
-	spin_lock_bh(&acqseq_lock);
-	res = (++acqseq ? : ++acqseq);
-	spin_unlock_bh(&acqseq_lock);
+	do {
+		res = atomic_inc_return(&acqseq);
+	} while (!res);
 	return res;
 }