void site_survey(struct adapter *padapter)
 {
        unsigned char   survey_channel = 0, val8;
-       RT_SCAN_TYPE    ScanType = SCAN_PASSIVE;
+       enum RT_SCAN_TYPE       ScanType = SCAN_PASSIVE;
        struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
        struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
        u32 initialgain = 0;
 
 
        case BTC_GET_U4_WIFI_TRAFFIC_DIRECTION:
                {
-                       PRT_LINK_DETECT_T plinkinfo;
+                       struct RT_LINK_DETECT_T * plinkinfo;
                        plinkinfo = &padapter->mlmepriv.LinkDetectInfo;
 
                        if (plinkinfo->NumTxOkInPeriod > plinkinfo->NumRxOkInPeriod)
 
 };
 
 /*  Scan type including active and passive scan. */
-typedef enum _RT_SCAN_TYPE {
+enum RT_SCAN_TYPE {
        SCAN_PASSIVE,
        SCAN_ACTIVE,
        SCAN_MIX,
-} RT_SCAN_TYPE, *PRT_SCAN_TYPE;
+};
 
 enum  _BAND {
        GHZ24_50 = 0,
        _timer  sitesurvey_ctrl_timer;
 };
 
-typedef struct _RT_LINK_DETECT_T {
+struct RT_LINK_DETECT_T {
        u32                     NumTxOkInPeriod;
        u32                     NumRxOkInPeriod;
        u32                     NumRxUnicastOkInPeriod;
        /* u8 TrafficBusyState; */
        u8 TrafficTransitionCount;
        u32 LowPowerTransitionCount;
-} RT_LINK_DETECT_T, *PRT_LINK_DETECT_T;
+};
 
 struct profile_info {
        u8 ssidlen;
 
        struct ht_priv htpriv;
 
-       RT_LINK_DETECT_T        LinkDetectInfo;
+       struct RT_LINK_DETECT_T LinkDetectInfo;
        _timer  dynamic_chk_timer; /* dynamic/periodic check timer */
 
        u8 acm_mask; /*  for wmm acm mask */
        u8 ChannelPlan;
-       RT_SCAN_TYPE    scan_mode; /*  active: 1, passive: 0 */
+       enum RT_SCAN_TYPE       scan_mode; /*  active: 1, passive: 0 */
 
        u8 *wps_probe_req_ie;
        u32 wps_probe_req_ie_len;
 
 /*  The channel information about this channel including joining, scanning, and power constraints. */
 typedef struct _RT_CHANNEL_INFO {
        u8              ChannelNum;             /*  The channel number. */
-       RT_SCAN_TYPE    ScanType;               /*  Scan type such as passive or active scan. */
+       enum RT_SCAN_TYPE       ScanType;               /*  Scan type such as passive or active scan. */
 } RT_CHANNEL_INFO, *PRT_CHANNEL_INFO;
 
 int rtw_ch_set_search_ch(RT_CHANNEL_INFO *ch_set, const u32 ch);