diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h
index 546d3b3f9f89..1a0fd4530575 100644
--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -68,6 +68,8 @@ int hci_disable_advertising_sync(struct hci_dev *hdev);
 int hci_update_passive_scan_sync(struct hci_dev *hdev);
 int hci_update_passive_scan(struct hci_dev *hdev);
 
+int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable);
+
 int hci_dev_open_sync(struct hci_dev *dev);
 int hci_dev_close_sync(struct hci_dev *dev);
 
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 54181dc5267b..78397200e167 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -2193,7 +2193,7 @@ static int hci_write_auth_enable_sync(struct hci_dev *hdev)
 				     HCI_CMD_TIMEOUT);
 }
 
-static int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
+int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
 {
 	struct hci_cp_write_page_scan_activity cp;
 	u8 type;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 663049821bed..e83592e120b9 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -5864,22 +5864,15 @@ static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
 	return err;
 }
 
-static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
-				      u16 opcode)
+static void fast_connectable_complete(struct hci_dev *hdev, void *data, int err)
 {
-	struct mgmt_pending_cmd *cmd;
-
-	bt_dev_dbg(hdev, "status 0x%02x", status);
-
-	hci_dev_lock(hdev);
+	struct mgmt_pending_cmd *cmd = data;
 
-	cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev);
-	if (!cmd)
-		goto unlock;
+	bt_dev_dbg(hdev, "err %d", err);
 
-	if (status) {
+	if (err) {
 		mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
-			        mgmt_status(status));
+							mgmt_status(err));
 	} else {
 		struct mgmt_mode *cp = cmd->param;
 
@@ -5892,10 +5885,15 @@ static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
 		new_settings(hdev, cmd->sk);
 	}
 
-	mgmt_pending_remove(cmd);
+	mgmt_pending_free(cmd);
+}
 
-unlock:
-	hci_dev_unlock(hdev);
+static int write_fast_connectable_sync(struct hci_dev *hdev, void *data)
+{
+	struct mgmt_pending_cmd *cmd = data;
+	struct mgmt_mode *cp = cmd->param;
+
+	return hci_write_fast_connectable_sync(hdev, cp->val);
 }
 
 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
@@ -5903,58 +5901,52 @@ static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
 {
 	struct mgmt_mode *cp = data;
 	struct mgmt_pending_cmd *cmd;
-	struct hci_request req;
 	int err;
 
 	bt_dev_dbg(hdev, "sock %p", sk);
 
 	if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
 	    hdev->hci_ver < BLUETOOTH_VER_1_2)
-		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
-				       MGMT_STATUS_NOT_SUPPORTED);
+		return mgmt_cmd_status(sk, hdev->id,
+						MGMT_OP_SET_FAST_CONNECTABLE,
+						MGMT_STATUS_NOT_SUPPORTED);
 
 	if (cp->val != 0x00 && cp->val != 0x01)
-		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
-				       MGMT_STATUS_INVALID_PARAMS);
+		return mgmt_cmd_status(sk, hdev->id,
+						MGMT_OP_SET_FAST_CONNECTABLE,
+						MGMT_STATUS_INVALID_PARAMS);
 
 	hci_dev_lock(hdev);
 
-	if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) {
-		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
-				      MGMT_STATUS_BUSY);
-		goto unlock;
-	}
-
 	if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) {
 		err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
-					hdev);
+									hdev);
 		goto unlock;
 	}
 
 	if (!hdev_is_powered(hdev)) {
 		hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE);
 		err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
-					hdev);
+									hdev);
 		new_settings(hdev, sk);
 		goto unlock;
 	}
 
-	cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
-			       data, len);
-	if (!cmd) {
+	cmd = mgmt_pending_new(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
+								data, len);
+	if (!cmd)
 		err = -ENOMEM;
-		goto unlock;
-	}
+	else
+		err = hci_cmd_sync_queue(hdev, write_fast_connectable_sync, cmd,
+						fast_connectable_complete);
 
-	hci_req_init(&req, hdev);
+	if (err < 0) {
+		mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
+							MGMT_STATUS_FAILED);
 
-	__hci_req_write_fast_connectable(&req, cp->val);
 
-	err = hci_req_run(&req, fast_connectable_complete);
-	if (err < 0) {
-		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
-				      MGMT_STATUS_FAILED);
-		mgmt_pending_remove(cmd);
+		if (cmd)
+			mgmt_pending_free(cmd);
 	}
 
 unlock:
