diff --git a/include/linux/smp.h b/include/linux/smp.h
index 9dfa3ee..86b5065 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -94,7 +94,7 @@ void smp_prepare_boot_cpu(void);
  */
 #define raw_smp_processor_id()			0
 #define hard_smp_processor_id()			0
-#define smp_call_function(func,info,retry,wait)	({ 0; })
+#define smp_call_function(func,info,retry,wait)	({ int x = 0; x; })
 #define on_each_cpu(func,info,retry,wait)	({ func(info); 0; })
 static inline void smp_send_reschedule(int cpu) { }
 #define num_booting_cpus()			1