diff --git a/core/rtw_mlme_ext.c b/core/rtw_mlme_ext.c
index 1025c8c..4c6343e 100644
--- a/core/rtw_mlme_ext.c
+++ b/core/rtw_mlme_ext.c
@@ -20,7 +20,6 @@
 #endif /* CONFIG_IOCTL_CFG80211 */
 #include <hal_data.h>
 
-
 struct mlme_handler mlme_sta_tbl[] = {
 	{WIFI_ASSOCREQ,		"OnAssocReq",	&OnAssocReq},
 	{WIFI_ASSOCRSP,		"OnAssocRsp",	&OnAssocRsp},
@@ -94,14 +93,13 @@ struct action_handler OnAction_tbl[] = {
 	{RTW_WLAN_CATEGORY_P2P, "ACTION_P2P", &OnAction_p2p},
 };
 
-
 u8	null_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
 
 /**************************************************
 OUI definitions for the vendor specific IE
 ***************************************************/
 unsigned char	RTW_WPA_OUI[] = {0x00, 0x50, 0xf2, 0x01};
-unsigned char WMM_OUI[] = {0x00, 0x50, 0xf2, 0x02};
+unsigned char   WMM_OUI[] = {0x00, 0x50, 0xf2, 0x02};
 unsigned char	WPS_OUI[] = {0x00, 0x50, 0xf2, 0x04};
 unsigned char	P2P_OUI[] = {0x50, 0x6F, 0x9A, 0x09};
 unsigned char	WFD_OUI[] = {0x50, 0x6F, 0x9A, 0x0A};
@@ -258,6 +256,7 @@ void rtw_txpwr_init_regd(struct rf_ctl_t *rfctl)
 		);
 		if (rfctl->regd_name)
 			break;
+			// Intentional fallthrough
 	default:
 		rfctl->regd_name = regd_str(TXPWR_LMT_WW);
 		RTW_PRINT("assign %s for default case\n", regd_str(TXPWR_LMT_WW));
diff --git a/dkms.conf b/dkms.conf
index c62a506..adc39cf 100644
--- a/dkms.conf
+++ b/dkms.conf
@@ -1,5 +1,5 @@
 PACKAGE_NAME="realtek-rtl88xxau"
-PACKAGE_VERSION="5.6.4.1~20190919"
+PACKAGE_VERSION="5.6.4.1~20190928"
 CLEAN="'make' clean"
 BUILT_MODULE_NAME[0]=88XXau
 PROCS_NUM=`nproc`
diff --git a/hal/hal_intf.c b/hal/hal_intf.c
index 2d020fb..26a02a3 100644
--- a/hal/hal_intf.c
+++ b/hal/hal_intf.c
@@ -84,7 +84,7 @@ static void rtw_init_wireless_mode(_adapter *padapter)
 	struct hal_spec_t *hal_spec = GET_HAL_SPEC(padapter);
 	if(hal_spec->proto_cap & PROTO_CAP_11B)
 		proto_wireless_mode |= WIRELESS_11B;
-	
+
 	if(hal_spec->proto_cap & PROTO_CAP_11G)
 		proto_wireless_mode |= WIRELESS_11G;
 #ifdef CONFIG_80211AC_VHT
@@ -103,7 +103,7 @@ static void rtw_init_wireless_mode(_adapter *padapter)
 #endif
 
 #ifdef CONFIG_80211AC_VHT
-	if(hal_spec->proto_cap & PROTO_CAP_11AC) 
+	if(hal_spec->proto_cap & PROTO_CAP_11AC)
 		proto_wireless_mode |= WIRELESS_11AC;
 #endif
 	padapter->registrypriv.wireless_mode &= proto_wireless_mode;
@@ -119,7 +119,7 @@ void rtw_hal_def_value_init(_adapter *padapter)
 		padapter->hal_func.init_default_value(padapter);
 
 		rtw_init_hal_com_default_value(padapter);
-		
+
 		#ifdef CONFIG_FW_MULTI_PORT_SUPPORT
 		adapter_to_dvobj(padapter)->dft.port_id = 0xFF;
 		adapter_to_dvobj(padapter)->dft.mac_id = 0xFF;
@@ -1081,6 +1081,7 @@ s32 c2h_handler(_adapter *adapter, u8 id, u8 seq, u8 plen, u8 *payload)
 #endif
 	case C2H_EXTEND:
 		sub_id = payload[0];
+		// Intentional fallthrough
 		/* no handle, goto default */
 
 	default: