diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c
index a0f9f9e63b7f..05584515c5b4 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
@@ -638,7 +638,6 @@ void rtw_survey_event_callback(struct adapter	*adapter, u8 *pbuf)
 void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 {
 	struct	mlme_priv *pmlmepriv = &(adapter->mlmepriv);
-	struct mlme_ext_priv *pmlmeext;
 
 	spin_lock_bh(&pmlmepriv->lock);
 
@@ -720,8 +719,6 @@ void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 	spin_unlock_bh(&pmlmepriv->lock);
 
 	rtw_os_xmit_schedule(adapter);
-
-	pmlmeext = &adapter->mlmeextpriv;
 }
 
 void rtw_dummy_event_callback(struct adapter *adapter, u8 *pbuf)
diff --git a/drivers/staging/rtl8188eu/hal/phy.c b/drivers/staging/rtl8188eu/hal/phy.c
index 6e4c3ee0399a..2eafa503f343 100644
--- a/drivers/staging/rtl8188eu/hal/phy.c
+++ b/drivers/staging/rtl8188eu/hal/phy.c
@@ -629,7 +629,7 @@ void rtl88eu_dm_txpower_tracking_callback_thermalmeter(struct adapter *adapt)
 
 static u8 phy_path_a_iqk(struct adapter *adapt, bool config_pathb)
 {
-	u32 reg_eac, reg_e94, reg_e9c, reg_ea4;
+	u32 reg_eac, reg_e94, reg_e9c;
 	u8 result = 0x00;
 
 	/* 1 Tx IQK */
@@ -651,7 +651,6 @@ static u8 phy_path_a_iqk(struct adapter *adapt, bool config_pathb)
 	reg_eac = phy_query_bb_reg(adapt, rRx_Power_After_IQK_A_2, bMaskDWord);
 	reg_e94 = phy_query_bb_reg(adapt, rTx_Power_Before_IQK_A, bMaskDWord);
 	reg_e9c = phy_query_bb_reg(adapt, rTx_Power_After_IQK_A, bMaskDWord);
-	reg_ea4 = phy_query_bb_reg(adapt, rRx_Power_Before_IQK_A_2, bMaskDWord);
 
 	if (!(reg_eac & BIT28) &&
 	    (((reg_e94 & 0x03FF0000)>>16) != 0x142) &&
@@ -1316,8 +1315,7 @@ void rtl88eu_phy_iq_calibrate(struct adapter *adapt, bool recovery)
 	s32 result[4][8];
 	u8 i, final, chn_index;
 	bool pathaok, pathbok;
-	s32 reg_e94, reg_e9c, reg_ea4, reg_eac, reg_eb4, reg_ebc, reg_ec4,
-	    reg_ecc;
+	s32 reg_e94, reg_e9c, reg_ea4, reg_eb4, reg_ebc, reg_ec4;
 	bool is12simular, is13simular, is23simular;
 	bool singletone = false, carrier_sup = false;
 	u32 iqk_bb_reg_92c[IQK_BB_REG_NUM] = {
@@ -1389,18 +1387,15 @@ void rtl88eu_phy_iq_calibrate(struct adapter *adapt, bool recovery)
 		reg_e94 = result[i][0];
 		reg_e9c = result[i][1];
 		reg_ea4 = result[i][2];
-		reg_eac = result[i][3];
 		reg_eb4 = result[i][4];
 		reg_ebc = result[i][5];
 		reg_ec4 = result[i][6];
-		reg_ecc = result[i][7];
 	}
 
 	if (final != 0xff) {
 		reg_e94 = result[final][0];
 		reg_e9c = result[final][1];
 		reg_ea4 = result[final][2];
-		reg_eac = result[final][3];
 		reg_eb4 = result[final][4];
 		reg_ebc = result[final][5];
 		dm_odm->RFCalibrateInfo.RegE94 = reg_e94;
@@ -1408,7 +1403,6 @@ void rtl88eu_phy_iq_calibrate(struct adapter *adapt, bool recovery)
 		dm_odm->RFCalibrateInfo.RegEB4 = reg_eb4;
 		dm_odm->RFCalibrateInfo.RegEBC = reg_ebc;
 		reg_ec4 = result[final][6];
-		reg_ecc = result[final][7];
 		pathaok = true;
 		pathbok = true;
 	} else {
diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c b/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c
index 01566210bbd2..fca590949409 100644
--- a/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c
+++ b/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c
@@ -151,7 +151,6 @@ void rtl8188e_InitHalDm(struct adapter *Adapter)
 
 void rtl8188e_HalDmWatchDog(struct adapter *Adapter)
 {
-	bool fw_cur_in_ps = false;
 	bool fw_ps_awake = true;
 	u8 hw_init_completed = false;
 	struct hal_data_8188e *hal_data = GET_HAL_DATA(Adapter);
@@ -163,7 +162,6 @@ void rtl8188e_HalDmWatchDog(struct adapter *Adapter)
 	if (!hw_init_completed)
 		goto skip_dm;
 
-	fw_cur_in_ps = Adapter->pwrctrlpriv.bFwCurrentInPSMode;
 	rtw_hal_get_hwreg(Adapter, HW_VAR_FWLPS_RF_ON, (u8 *)(&fw_ps_awake));
 
 	/*  Fw is under p2p powersaving mode, driver should stop dynamic mechanism. */
diff --git a/drivers/staging/rtl8188eu/os_dep/osdep_service.c b/drivers/staging/rtl8188eu/os_dep/osdep_service.c
index abcb3a8589ef..acb4eb120b76 100644
--- a/drivers/staging/rtl8188eu/os_dep/osdep_service.c
+++ b/drivers/staging/rtl8188eu/os_dep/osdep_service.c
@@ -134,7 +134,7 @@ void rtw_buf_free(u8 **buf, u32 *buf_len)
 
 void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
 {
-	u32 ori_len = 0, dup_len = 0;
+	u32 dup_len = 0;
 	u8 *ori = NULL;
 	u8 *dup = NULL;
 
@@ -153,7 +153,6 @@ void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
 
 keep_ori:
 	ori = *buf;
-	ori_len = *buf_len;
 
 	/* replace buf with dup */
 	*buf_len = 0;