diff --git a/components/bt/host/bluedroid/bta/dm/bta_dm_act.c b/components/bt/host/bluedroid/bta/dm/bta_dm_act.c
index f57ff2731a1..da2b22042e4 100644
--- a/components/bt/host/bluedroid/bta/dm/bta_dm_act.c
+++ b/components/bt/host/bluedroid/bta/dm/bta_dm_act.c
@@ -133,9 +133,9 @@ extern tBTA_DM_CONTRL_STATE bta_dm_pm_obtain_controller_state(void);
 static BOOLEAN bta_dm_remove_sec_dev_entry(BD_ADDR remote_bd_addr);
 #endif  ///SMP_INCLUDED == TRUE
 #if (BLE_INCLUDED == TRUE)
-static void bta_dm_observe_results_cb(tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir);
-static void bta_dm_observe_cmpl_cb(void *p_result);
-static void bta_dm_observe_discard_cb (uint32_t num_dis);
+static void bta_dm_scan_results_cb(tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir);
+static void bta_dm_scan_cmpl_cb(void *p_result);
+static void bta_dm_scan_discard_cb (uint32_t num_dis);
 #endif  ///BLE_INCLUDED == TRUE
 
 #if (CLASSIC_BT_INCLUDED == TRUE)
@@ -4657,9 +4657,10 @@ BOOLEAN bta_dm_check_if_only_hd_connected(BD_ADDR peer_addr)
 #endif /* BTA_HD_INCLUDED == TRUE */
 
 #if (BLE_INCLUDED == TRUE)
+#if (BLE_42_SCAN_EN == TRUE)
 /*******************************************************************************
 **
-** Function         bta_dm_observe_results_cb
+** Function         bta_dm_scan_results_cb
 **
 ** Description      Callback for BLE Observe result
 **
@@ -4667,7 +4668,7 @@ BOOLEAN bta_dm_check_if_only_hd_connected(BD_ADDR peer_addr)
 ** Returns          void
 **
 *******************************************************************************/
-static void bta_dm_observe_results_cb (tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir)
+static void bta_dm_scan_results_cb (tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir)
 {
     tBTA_DM_SEARCH     result;
     tBTM_INQ_INFO      *p_inq_info;
@@ -4707,7 +4708,7 @@ static void bta_dm_observe_results_cb (tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir)
 
 /*******************************************************************************
 **
-** Function         bta_dm_observe_cmpl_cb
+** Function         bta_dm_scan_cmpl_cb
 **
 ** Description      Callback for BLE Observe complete
 **
@@ -4715,11 +4716,11 @@ static void bta_dm_observe_results_cb (tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir)
 ** Returns          void
 **
 *******************************************************************************/
-static void bta_dm_observe_cmpl_cb (void *p_result)
+static void bta_dm_scan_cmpl_cb (void *p_result)
 {
     tBTA_DM_SEARCH  data;
 
-    APPL_TRACE_DEBUG("bta_dm_observe_cmpl_cb");
+    APPL_TRACE_DEBUG("bta_dm_scan_cmpl_cb");
 
     data.inq_cmpl.num_resps = ((tBTM_INQUIRY_CMPL *)p_result)->num_resp;
     if (bta_dm_search_cb.p_scan_cback) {
@@ -4729,7 +4730,7 @@ static void bta_dm_observe_cmpl_cb (void *p_result)
 
 /*******************************************************************************
 **
-** Function         bta_dm_observe_discard_cb
+** Function         bta_dm_scan_discard_cb
 **
 ** Description      Callback for BLE Observe lost
 **
@@ -4737,17 +4738,18 @@ static void bta_dm_observe_cmpl_cb (void *p_result)
 ** Returns          void
 **
 *******************************************************************************/
-static void bta_dm_observe_discard_cb (uint32_t num_dis)
+static void bta_dm_scan_discard_cb (uint32_t num_dis)
 {
     tBTA_DM_SEARCH  data;
 
-    APPL_TRACE_DEBUG("bta_dm_observe_discard_cb");
+    APPL_TRACE_DEBUG("bta_dm_scan_discard_cb");
 
     data.inq_dis.num_dis = num_dis;
     if (bta_dm_search_cb.p_scan_cback) {
         bta_dm_search_cb.p_scan_cback(BTA_DM_INQ_DISCARD_NUM_EVT, &data);
     }
 }
+#endif // (BLE_42_SCAN_EN == TRUE)
 
 #if (SMP_INCLUDED == TRUE)
 /*******************************************************************************
@@ -5228,7 +5230,7 @@ void bta_dm_ble_scan (tBTA_DM_MSG *p_data)
         bta_dm_search_cb.p_scan_cback = p_data->ble_scan.p_cback;
 
         if ((status = BTM_BleScan(TRUE, p_data->ble_scan.duration,
-                                     bta_dm_observe_results_cb, bta_dm_observe_cmpl_cb, bta_dm_observe_discard_cb)) != BTM_CMD_STARTED) {
+                                     bta_dm_scan_results_cb, bta_dm_scan_cmpl_cb, bta_dm_scan_discard_cb)) != BTM_CMD_STARTED) {
             APPL_TRACE_WARNING(" %s start scan failed. status=0x%x\n", __FUNCTION__, status);
         }
 
@@ -5463,14 +5465,14 @@ void bta_dm_ble_set_data_length(tBTA_DM_MSG *p_data)
 #if (BLE_42_ADV_EN == TRUE)
 /*******************************************************************************
 **
-** Function         bta_dm_ble_broadcast
+** Function         bta_dm_ble_advstop
 **
 ** Description      Starts or stops LE broadcasts
 **
 ** Parameters:
 **
 *******************************************************************************/
-void bta_dm_ble_broadcast (tBTA_DM_MSG *p_data)
+void bta_dm_ble_advstop (tBTA_DM_MSG *p_data)
 {
     tBTA_STATUS status = BTA_FAILURE;
     BOOLEAN start = p_data->ble_observe.start;
diff --git a/components/bt/host/bluedroid/bta/dm/bta_dm_api.c b/components/bt/host/bluedroid/bta/dm/bta_dm_api.c
index 9aeed910b28..36a195c74f9 100644
--- a/components/bt/host/bluedroid/bta/dm/bta_dm_api.c
+++ b/components/bt/host/bluedroid/bta/dm/bta_dm_api.c
@@ -1590,25 +1590,25 @@ void BTA_DmUpdateDuplicateExceptionalList(UINT8 subcode, UINT32 type, BD_ADDR de
 #if (BLE_42_ADV_EN == TRUE)
 /*******************************************************************************
 **
-** Function         BTA_DmBleBroadcast
+** Function         BTA_DmBleAdvStop
 **
 ** Description      This function starts or stops LE broadcasting.
 **
-** Parameters       start: start or stop broadcast.
+** Parameters       start: always be false.
 **
 ** Returns          None
 **
 *******************************************************************************/
-extern void BTA_DmBleBroadcast (BOOLEAN start, tBTA_START_STOP_ADV_CMPL_CBACK *p_start_stop_adv_cb)
+extern void BTA_DmBleAdvStop (BOOLEAN start, tBTA_START_STOP_ADV_CMPL_CBACK *p_start_stop_adv_cb)
 {
     tBTA_DM_API_BLE_OBSERVE   *p_msg;
 
-    APPL_TRACE_API("BTA_DmBleBroadcast: start = %d \n", start);
+    APPL_TRACE_API("BTA_DmBleAdvStop: start = %d \n", start);
 
     if ((p_msg = (tBTA_DM_API_BLE_OBSERVE *) osi_malloc(sizeof(tBTA_DM_API_BLE_OBSERVE))) != NULL) {
         memset(p_msg, 0, sizeof(tBTA_DM_API_BLE_OBSERVE));
 
-        p_msg->hdr.event = BTA_DM_API_BLE_BROADCAST_EVT;
+        p_msg->hdr.event = BTA_DM_API_BLE_ADVSTOP_EVT;
         p_msg->start = start;
         if (start == FALSE){
             p_msg->p_stop_adv_cback= p_start_stop_adv_cb;
diff --git a/components/bt/host/bluedroid/bta/dm/bta_dm_main.c b/components/bt/host/bluedroid/bta/dm/bta_dm_main.c
index 34bccd48356..64af84979d3 100644
--- a/components/bt/host/bluedroid/bta/dm/bta_dm_main.c
+++ b/components/bt/host/bluedroid/bta/dm/bta_dm_main.c
@@ -159,7 +159,7 @@ const tBTA_DM_ACTION bta_dm_action[BTA_DM_MAX_EVT] = {
     /* New function to allow set raw scan
        response data to HCI */
     bta_dm_ble_set_scan_rsp_raw,            /* BTA_DM_API_BLE_SET_SCAN_RSP_RAW_EVT */
-    bta_dm_ble_broadcast,                   /* BTA_DM_API_BLE_BROADCAST_EVT */
+    bta_dm_ble_advstop,                   /* BTA_DM_API_BLE_ADVSTOP_EVT */
 #endif // #if (BLE_42_ADV_EN == TRUE)
     bta_dm_ble_set_data_length,             /* BTA_DM_API_SET_DATA_LENGTH_EVT */
     bta_dm_ble_disconnect,                  /* BTA_DM_API_BLE_DISCONNECT_EVT */
diff --git a/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h b/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
index add25a965bb..8e72beb9a85 100644
--- a/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
+++ b/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
@@ -153,7 +153,7 @@ enum {
     BTA_DM_API_BLE_SET_SCAN_RSP_EVT,
     /* Add for set raw scan response data */
     BTA_DM_API_BLE_SET_SCAN_RSP_RAW_EVT,
-    BTA_DM_API_BLE_BROADCAST_EVT,
+    BTA_DM_API_BLE_ADVSTOP_EVT,
 #endif // #if (BLE_42_ADV_EN == TRUE)
     BTA_DM_API_SET_DATA_LENGTH_EVT,
 
@@ -2232,7 +2232,7 @@ extern void bta_dm_ble_set_adv_config (tBTA_DM_MSG *p_data);
 extern void bta_dm_ble_set_adv_config_raw (tBTA_DM_MSG *p_data);
 extern void bta_dm_ble_set_scan_rsp (tBTA_DM_MSG *p_data);
 extern void bta_dm_ble_set_scan_rsp_raw (tBTA_DM_MSG *p_data);
-extern void bta_dm_ble_broadcast (tBTA_DM_MSG *p_data);
+extern void bta_dm_ble_advstop (tBTA_DM_MSG *p_data);
 extern void bta_dm_ble_set_data_length(tBTA_DM_MSG *p_data);
 extern void bta_dm_ble_update_duplicate_exceptional_list(tBTA_DM_MSG *p_data);
 #if SMP_INCLUDED == TRUE
diff --git a/components/bt/host/bluedroid/bta/include/bta/bta_api.h b/components/bt/host/bluedroid/bta/include/bta/bta_api.h
index e88f035b360..7a8c44aa96c 100644
--- a/components/bt/host/bluedroid/bta/include/bta/bta_api.h
+++ b/components/bt/host/bluedroid/bta/include/bta/bta_api.h
@@ -2889,7 +2889,7 @@ extern void BTA_DmUpdateDuplicateExceptionalList(UINT8 subcode, UINT32 type,
 
 /*******************************************************************************
 **
-** Function         BTA_DmBleBroadcast
+** Function         BTA_DmBleAdvStop
 **
 ** Description      This function starts or stops LE broadcasting.
 **
@@ -2899,7 +2899,7 @@ extern void BTA_DmUpdateDuplicateExceptionalList(UINT8 subcode, UINT32 type,
 ** Returns          None
 **
 *******************************************************************************/
-extern void BTA_DmBleBroadcast (BOOLEAN start, tBTA_START_STOP_ADV_CMPL_CBACK *p_start_stop_adv_cb);
+extern void BTA_DmBleAdvStop (BOOLEAN start, tBTA_START_STOP_ADV_CMPL_CBACK *p_start_stop_adv_cb);
 
 /*******************************************************************************
 **
diff --git a/components/bt/host/bluedroid/btc/profile/std/gap/btc_gap_ble.c b/components/bt/host/bluedroid/btc/profile/std/gap/btc_gap_ble.c
index 7ebb3bb40e8..30dd7213733 100644
--- a/components/bt/host/bluedroid/btc/profile/std/gap/btc_gap_ble.c
+++ b/components/bt/host/bluedroid/btc/profile/std/gap/btc_gap_ble.c
@@ -1801,7 +1801,7 @@ static void btc_ble_stop_advertising(tBTA_START_STOP_ADV_CMPL_CBACK *stop_adv_cb
 {
     bool stop_adv = false;
 
-    BTA_DmBleBroadcast(stop_adv, stop_adv_cb);
+    BTA_DmBleAdvStop(stop_adv, stop_adv_cb);
 }
 #endif // #if (BLE_42_ADV_EN == TRUE)
 
diff --git a/components/bt/host/bluedroid/stack/btm/btm_ble_gap.c b/components/bt/host/bluedroid/stack/btm/btm_ble_gap.c
index d61f14da6c7..5260bff32df 100644
--- a/components/bt/host/bluedroid/stack/btm/btm_ble_gap.c
+++ b/components/bt/host/bluedroid/stack/btm/btm_ble_gap.c
@@ -528,6 +528,8 @@ tBTM_STATUS BTM_BleBroadcast(BOOLEAN start, tBTM_START_STOP_ADV_CMPL_CBACK  *p_s
 #endif
 
     if (start) {
+// "start" should not be ture
+#if (0)
         /* update adv params */
         if (!btsnd_hcic_ble_write_adv_params ((UINT16)(p_cb->adv_interval_min ? p_cb->adv_interval_min :
                                               BTM_BLE_GAP_ADV_INT),
@@ -547,6 +549,7 @@ tBTM_STATUS BTM_BleBroadcast(BOOLEAN start, tBTM_START_STOP_ADV_CMPL_CBACK  *p_s
         }
 
         status = btm_ble_start_adv ();
+#endif //
     } else {
         //save the stop adv callback to the BTM env.
         p_cb->p_stop_adv_cb = p_stop_adv_cback;