--- zzzz-none-000/linux-2.6.39.4/arch/x86/include/asm/atomic.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/x86/include/asm/atomic.h	2021-11-10 13:38:14.000000000 +0000
@@ -269,6 +269,48 @@
 	return dec;
 }
 
+/*
+ *  return the incremented value if value < max_value
+ *  if incremented value == max_value so do not write and return -1
+ */
+static inline int atomic_inc_with_max_return(atomic_t * v, unsigned int max_value) {
+	int c, old, add;
+	c = atomic_read(v);
+	for (;;) {
+		add = c + 1;
+		if (unlikely(add >= max_value)) {
+            add = -1;
+			break;
+        }
+		old = atomic_cmpxchg((v), c, add);
+		if (likely(old == c)) {
+			break;
+        }
+		c = old;
+	}
+	return add;
+}
+
+/*
+ *  return the incremented value if value < max_value
+ *  if incremented value == max_value so write and return zero 
+ */
+static inline int atomic_inc_with_wrap_return(atomic_t * v, unsigned int max_value) {
+	int c, old, add;
+	c = atomic_read(v);
+	for (;;) {
+		add = c + 1;
+		if (unlikely(add >= max_value)) {
+            add = 0;
+        }
+		old = atomic_cmpxchg((v), c, add);
+		if (likely(old == c)) {
+			break;
+        }
+		c = old;
+	}
+	return add;
+}
 /**
  * atomic_inc_short - increment of a short integer
  * @v: pointer to type int