diff --git a/core/rtw_cmd.c b/core/rtw_cmd.c
index c704bba..8efc1dd 100644
--- a/core/rtw_cmd.c
+++ b/core/rtw_cmd.c
@@ -187,8 +187,6 @@ static void _rtw_free_evt_priv(struct evt_priv *pevtpriv)
 
 
 #ifdef CONFIG_EVENT_THREAD_MODE
-	_rtw_free_sema(&(pevtpriv->evt_notify));
-
 	if (pevtpriv->evt_allocated_buf)
 		rtw_mfree(pevtpriv->evt_allocated_buf, MAX_EVTSZ + 4);
 #endif
@@ -215,10 +213,6 @@ static void _rtw_free_cmd_priv(struct cmd_priv *pcmdpriv)
 {
 
 	if (pcmdpriv) {
-		_rtw_free_sema(&(pcmdpriv->cmd_queue_sema));
-		/* _rtw_free_sema(&(pcmdpriv->cmd_done_sema)); */
-		_rtw_free_sema(&(pcmdpriv->start_cmdthread_sema));
-
 		if (pcmdpriv->cmd_allocated_buf)
 			rtw_mfree(pcmdpriv->cmd_allocated_buf, MAX_CMDSZ + CMDBUFF_ALIGN_SZ);
 
diff --git a/core/rtw_mp.c b/core/rtw_mp.c
index cb8074e..55dafbe 100644
--- a/core/rtw_mp.c
+++ b/core/rtw_mp.c
@@ -634,7 +634,6 @@ MPT_DeInitAdapter(
 
 	pMptCtx->bMptDrvUnload = _TRUE;
 #if defined(CONFIG_RTL8723B)
-	_rtw_free_sema(&(pMptCtx->MPh2c_Sema));
 	_cancel_timer_ex(&pMptCtx->MPh2c_timeout_timer);
 #endif
 #if	defined(CONFIG_RTL8723B)
diff --git a/core/rtw_recv.c b/core/rtw_recv.c
index 6c88ebf..947c8f1 100644
--- a/core/rtw_recv.c
+++ b/core/rtw_recv.c
@@ -158,11 +158,6 @@ exit:
 
 }
 
-void rtw_mfree_recv_priv_lock(struct recv_priv *precvpriv);
-void rtw_mfree_recv_priv_lock(struct recv_priv *precvpriv)
-{
-}
-
 void _rtw_free_recv_priv(struct recv_priv *precvpriv)
 {
 	_adapter	*padapter = precvpriv->adapter;
diff --git a/include/osdep_service.h b/include/osdep_service.h
index 9070544..8157edd 100644
--- a/include/osdep_service.h
+++ b/include/osdep_service.h
@@ -260,7 +260,6 @@ void rtw_hlist_add_head_rcu(rtw_hlist_node *n, rtw_hlist_head *h);
 void rtw_hlist_del_rcu(rtw_hlist_node *n);
 
 extern void	_rtw_init_sema(_sema *sema, int init_val);
-extern void	_rtw_free_sema(_sema	*sema);
 extern void	_rtw_up_sema(_sema	*sema);
 extern u32	_rtw_down_sema(_sema *sema);
 extern void	_rtw_mutex_init(_mutex *pmutex);
diff --git a/os_dep/osdep_service.c b/os_dep/osdep_service.c
index e02eb68..e3ada44 100644
--- a/os_dep/osdep_service.c
+++ b/os_dep/osdep_service.c
@@ -847,11 +847,6 @@ void _rtw_init_sema(_sema	*sema, int init_val)
 
 }
 
-void _rtw_free_sema(_sema	*sema)
-{
-
-}
-
 void _rtw_up_sema(_sema	*sema)
 {