diff --git a/sys/powerpc/include/atomic.h b/sys/powerpc/include/atomic.h
index bccfa5f..799bfb8 100644
--- a/sys/powerpc/include/atomic.h
+++ b/sys/powerpc/include/atomic.h
@@ -672,6 +672,7 @@ atomic_cmpset_rel_long(volatile u_long *p, u_long cmpval, u_long newval)
  * zero if the compare failed and sets *cmpval to the read value from *p,
  * nonzero otherwise.
  */
+#if 0
 static __inline int
 atomic_fcmpset_int(volatile u_int *p, u_int *cmpval, u_int newval)
 {
@@ -732,6 +733,27 @@ atomic_fcmpset_long(volatile u_long *p, u_long *cmpval, u_long newval)
 
 	return (ret);
 }
+#endif
+
+static __inline int
+atomic_fcmpset_int(volatile u_int *dst, u_int *expect, u_int src)
+{
+
+	if (atomic_cmpset_int(dst, *expect, src))
+		return (1);
+	*expect = *dst;
+	return (0);
+}
+
+static __inline int
+atomic_fcmpset_long(volatile u_long *dst, u_long *expect, u_long src)
+{
+
+	if (atomic_cmpset_long(dst, *expect, src))
+		return (1);
+	*expect = *dst;
+	return (0);
+}
 
 static __inline int
 atomic_fcmpset_acq_int(volatile u_int *p, u_int *cmpval, u_int newval)