broadband-modem: make sure the primary port is used for the modem init sequence

src/mm-broadband-modem.c

@@ -2303,15 +2303,24 @@ modem_init_finish (MMIfaceModem *self,
                    GAsyncResult *res,
                    GError **error)
 {
-    GError *inner_error = NULL;
+    return !g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (res), error);
+}
 
-    mm_base_modem_at_sequence_finish (MM_BASE_MODEM (self), res, NULL, &inner_error);
+static void
-    if (inner_error) {
+modem_init_sequence_ready (MMBaseModem *self,
-        g_propagate_error (error, inner_error);
+                           GAsyncResult *res,
-        return FALSE;
+                           GSimpleAsyncResult *simple)
-    }
+{
+    GError *error = NULL;
 
-    return TRUE;
+    mm_base_modem_at_sequence_full_finish (MM_BASE_MODEM (self), res, NULL, &error);
+    if (error)
+        g_simple_async_result_take_error (simple, error);
+    else
+        g_simple_async_result_set_op_res_gboolean (simple, TRUE);
+
+    g_simple_async_result_complete (simple);
+    g_object_unref (simple);
 }
 
 static const MMBaseModemAtCommand modem_init_sequence[] = {
@@ -2341,12 +2350,34 @@ modem_init (MMIfaceModem *self,
             GAsyncReadyCallback callback,
             gpointer user_data)
 {
-    mm_base_modem_at_sequence (MM_BASE_MODEM (self),
+    MMAtSerialPort *primary;
+    GSimpleAsyncResult *result;
+
+    result = g_simple_async_result_new (G_OBJECT (self),
+                                        callback,
+                                        user_data,
+                                        modem_init);
+
+    primary = mm_base_modem_peek_port_primary (MM_BASE_MODEM (self));
+    if (!primary) {
+        g_simple_async_result_set_error (
+            result,
+            MM_CORE_ERROR,
+            MM_CORE_ERROR_FAILED,
+            "Need primary AT port to run modem init sequence");
+        g_simple_async_result_complete_in_idle (result);
+        g_object_unref (result);
+        return;
+    }
+
+    mm_base_modem_at_sequence_full (MM_BASE_MODEM (self),
+                                    primary,
                                     modem_init_sequence,
                                     NULL,  /* response_processor_context */
                                     NULL,  /* response_processor_context_free */
-                               callback,
+                                    NULL, /* cancellable */
-                               user_data);
+                                    (GAsyncReadyCallback)modem_init_sequence_ready,
+                                    result);
 }
 
 /*****************************************************************************/