hci_le_set_scan_enable_sync
err = hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE, filter_dup);
static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,