zte: carrier-detect disabled in serial ports

plugins/zte/mm-broadband-modem-zte.c

@@ -437,9 +437,25 @@ modem_3gpp_cleanup_unsolicited_events (MMIfaceModem3gpp *self,
 static void
 setup_ports (MMBroadbandModem *self)
 {
+    MMAtSerialPort *ports[2];
+    guint i;
+
     /* Call parent's setup ports first always */
     MM_BROADBAND_MODEM_CLASS (mm_broadband_modem_zte_parent_class)->setup_ports (self);
 
+    ports[0] = mm_base_modem_peek_port_primary (MM_BASE_MODEM (self));
+    ports[1] = mm_base_modem_peek_port_secondary (MM_BASE_MODEM (self));
+
+    /* Configure AT ports */
+    for (i = 0; i < 2; i++) {
+        if (!ports[i])
+            continue;
+
+        g_object_set (ports[i],
+                      MM_PORT_CARRIER_DETECT, FALSE,
+                      NULL);
+    }
+
     /* Now reset the unsolicited messages we'll handle when enabled */
     set_unsolicited_events_handlers (MM_BROADBAND_MODEM_ZTE (self), FALSE);
 }