diff --git a/drivers/staging/winbond/mto.c b/drivers/staging/winbond/mto.c
index 560c0ab617d1..0d0f9fb7881d 100644
--- a/drivers/staging/winbond/mto.c
+++ b/drivers/staging/winbond/mto.c
@@ -46,10 +46,7 @@ static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];
 static u8 boSparseTxTraffic;
 
 void MTO_Init(struct wbsoft_priv *adapter);
-void TxRateReductionCtrl(struct wbsoft_priv *adapter);
 void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index);
-void MTO_TxFailed(struct wbsoft_priv *adapter);
-void hal_get_dto_para(struct wbsoft_priv *adapter, char *buffer);
 
 /*
  * ===========================================================================