pantech: always prefer the ttyACM port as primary AT port

plugins/pantech/mm-plugin-pantech.c

@@ -45,6 +45,31 @@ create_modem (MMPlugin *self,
                                                   product));
 }
 
+static gboolean
+grab_port (MMPlugin *self,
+           MMBaseModem *modem,
+           MMPortProbe *probe,
+           GError **error)
+{
+    MMPortType ptype;
+    MMAtPortFlag pflags = MM_AT_PORT_FLAG_NONE;
+
+    ptype = mm_port_probe_get_port_type (probe);
+
+    /* Always prefer the ttyACM port as PRIMARY AT port */
+    if (ptype == MM_PORT_TYPE_AT &&
+        g_str_has_prefix (mm_port_probe_get_port_name (probe), "ttyACM")) {
+        pflags = MM_AT_PORT_FLAG_PRIMARY;
+    }
+
+    return mm_base_modem_grab_port (modem,
+                                    mm_port_probe_get_port_subsys (probe),
+                                    mm_port_probe_get_port_name (probe),
+                                    ptype,
+                                    pflags,
+                                    error);
+}
+
 /*****************************************************************************/
 
 G_MODULE_EXPORT MMPlugin *
@@ -73,4 +98,5 @@ mm_plugin_pantech_class_init (MMPluginPantechClass *klass)
     MMPluginClass *plugin_class = MM_PLUGIN_CLASS (klass);
 
     plugin_class->create_modem = create_modem;
+    plugin_class->grab_port = grab_port;
 }