diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
index 7cb0c6f22bf3..83701ff87411 100644
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
@@ -93,7 +93,7 @@ static struct ieee80211_channel rtw_2ghz_channels[] = {
 
 static void rtw_2g_channels_init(struct ieee80211_channel *channels)
 {
-	memcpy((void *)channels, (void *)rtw_2ghz_channels,
+	memcpy(channels, rtw_2ghz_channels,
 	       sizeof(struct ieee80211_channel) * RTW_2G_CHANNELS_NUM
 	);
 }
@@ -895,7 +895,7 @@ static int cfg80211_rtw_add_key(struct wiphy *wiphy, struct net_device *ndev,
 		ret =  rtw_cfg80211_set_encryption(ndev, param, param_len);
 	} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
 		if (mac_addr)
-			memcpy(param->sta_addr, (void *)mac_addr, ETH_ALEN);
+			memcpy(param->sta_addr, mac_addr, ETH_ALEN);
 
 		ret = rtw_cfg80211_ap_set_encryption(ndev, param, param_len);
 	} else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true
@@ -1735,7 +1735,7 @@ static int cfg80211_rtw_connect(struct wiphy *wiphy, struct net_device *ndev,
 		pwep->key_index = wep_key_idx;
 		pwep->key_index |= 0x80000000;
 
-		memcpy(pwep->key_material,  (void *)sme->key, pwep->key_length);
+		memcpy(pwep->key_material, sme->key, pwep->key_length);
 
 		if (rtw_set_802_11_add_wep(padapter, pwep) == (u8)_FAIL)
 			ret = -EOPNOTSUPP;
@@ -2084,7 +2084,7 @@ static netdev_tx_t rtw_cfg80211_monitor_if_xmit_entry(struct sk_buff *skb, struc
 
 		pframe = (u8 *)(pmgntframe->buf_addr) + TXDESC_OFFSET;
 
-		memcpy(pframe, (void *)buf, len);
+		memcpy(pframe, buf, len);
 		pattrib->pktlen = len;
 
 		pwlanhdr = (struct ieee80211_hdr *)pframe;
@@ -2259,8 +2259,8 @@ static int rtw_add_beacon(struct adapter *adapter, const u8 *head, size_t head_l
 	if (!pbuf)
 		return -ENOMEM;
 
-	memcpy(pbuf, (void *)head + 24, head_len - 24);/*  24 =beacon header len. */
-	memcpy(pbuf + head_len - 24, (void *)tail, tail_len);
+	memcpy(pbuf, head + 24, head_len - 24);/*  24 =beacon header len. */
+	memcpy(pbuf + head_len - 24, tail, tail_len);
 
 	len = head_len + tail_len - 24;
 
@@ -2297,9 +2297,9 @@ static int cfg80211_rtw_start_ap(struct wiphy *wiphy, struct net_device *ndev,
 		struct wlan_bssid_ex *pbss_network = &adapter->mlmepriv.cur_network.network;
 		struct wlan_bssid_ex *pbss_network_ext = &adapter->mlmeextpriv.mlmext_info.network;
 
-		memcpy(pbss_network->ssid.ssid, (void *)settings->ssid, settings->ssid_len);
+		memcpy(pbss_network->ssid.ssid, settings->ssid, settings->ssid_len);
 		pbss_network->ssid.ssid_length = settings->ssid_len;
-		memcpy(pbss_network_ext->ssid.ssid, (void *)settings->ssid, settings->ssid_len);
+		memcpy(pbss_network_ext->ssid.ssid, settings->ssid, settings->ssid_len);
 		pbss_network_ext->ssid.ssid_length = settings->ssid_len;
 	}
 
@@ -2492,7 +2492,7 @@ static int _cfg80211_rtw_mgmt_tx(struct adapter *padapter, u8 tx_ch, const u8 *b
 
 	pframe = (u8 *)(pmgntframe->buf_addr) + TXDESC_OFFSET;
 
-	memcpy(pframe, (void *)buf, len);
+	memcpy(pframe, buf, len);
 	pattrib->pktlen = len;
 
 	pwlanhdr = (struct ieee80211_hdr *)pframe;