diff --git a/core/rtw_sta_mgt.c b/core/rtw_sta_mgt.c
index 6126027..6834953 100644
--- a/core/rtw_sta_mgt.c
+++ b/core/rtw_sta_mgt.c
@@ -29,7 +29,7 @@
 
 #include <sta_info.h>
 
-void _rtw_init_stainfo(struct sta_info *psta)
+static void _rtw_init_stainfo(struct sta_info *psta)
 {
 	memset((u8 *)psta, 0, sizeof (struct sta_info));
 
@@ -163,24 +163,8 @@ inline struct sta_info *rtw_get_stainfo_by_offset(struct sta_priv *stapriv, int
 	return (struct sta_info *)(stapriv->pstainfo_buf + offset * sizeof(struct sta_info));
 }
 
-void	_rtw_free_sta_xmit_priv_lock(struct sta_xmit_priv *psta_xmitpriv)
-{
-}
-
-static void	_rtw_free_sta_recv_priv_lock(struct sta_recv_priv *psta_recvpriv)
-{
-}
-
-void rtw_mfree_stainfo(struct sta_info *psta)
-{
-	_rtw_free_sta_xmit_priv_lock(&psta->sta_xmitpriv);
-	_rtw_free_sta_recv_priv_lock(&psta->sta_recvpriv);
-}
-
-
 /*  this function is used to free the memory of lock || sema for all stainfos */
-void rtw_mfree_all_stainfo(struct sta_priv *pstapriv );
-void rtw_mfree_all_stainfo(struct sta_priv *pstapriv )
+static void rtw_mfree_all_stainfo(struct sta_priv *pstapriv )
 {
 	unsigned long	 irqL;
 	struct list_head *plist, *phead;
@@ -197,8 +181,6 @@ void rtw_mfree_all_stainfo(struct sta_priv *pstapriv )
 	{
 		psta = LIST_CONTAINOR(plist, struct sta_info ,list);
 		plist = get_next(plist);
-
-		rtw_mfree_stainfo(psta);
 	}
 
 	spin_unlock_bh(&pstapriv->sta_hash_lock);