static  void _rtl92e_dm_check_ac_dc_power(struct net_device *dev);
 static void _rtl92e_dm_check_fsync(struct net_device *dev);
 static void _rtl92e_dm_check_rf_ctrl_gpio(void *data);
-static void dm_fsync_timer_callback(unsigned long data);
+static void _rtl92e_dm_fsync_timer_callback(unsigned long data);
 
 /*---------------------Define local function prototype-----------------------*/
 
        priv->rtllib->fsync_state = Default_Fsync;
        priv->framesyncMonitor = 1;
 
-       setup_timer(&priv->fsync_timer, dm_fsync_timer_callback,
-                  (unsigned long) dev);
+       setup_timer(&priv->fsync_timer, _rtl92e_dm_fsync_timer_callback,
+                   (unsigned long)dev);
 }
 
 
        del_timer_sync(&priv->fsync_timer);
 }
 
-static void dm_fsync_timer_callback(unsigned long data)
+static void _rtl92e_dm_fsync_timer_callback(unsigned long data)
 {
        struct net_device *dev = (struct net_device *)data;
        struct r8192_priv *priv = rtllib_priv((struct net_device *)data);