#define smp_read_barrier_depends() do { } while (0)
#endif /* CONFIG_SMP */
-#define set_rmb(var, value) do { xchg(&var, value); } while (0)
+#define set_rmb(var, value) do { (void)xchg(&var, value); } while (0)
#define set_mb(var, value) set_rmb(var, value)
/* Interrupt Control */