_issue_qos_nulldata 1399 drivers/staging/rtl8188eu/core/rtw_mlme_ext.c ret = _issue_qos_nulldata(padapter, da, tid, wait_ms > 0); _issue_qos_nulldata 3664 drivers/staging/rtl8723bs/core/rtw_mlme_ext.c ret = _issue_qos_nulldata(padapter, da, tid, wait_ms > 0?true:false);