+ dbus_error_init(&err);
+
+ if (dbus_message_is_signal(m, "org.freedesktop.DBus", "NameOwnerChanged")) {
+ const char *name, *old_owner, *new_owner;
+
+ if (!dbus_message_get_args(m, &err,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_STRING, &old_owner,
+ DBUS_TYPE_STRING, &new_owner,
+ DBUS_TYPE_INVALID)) {
+ pa_log_error("Failed to parse org.freedesktop.DBus.NameOwnerChanged: %s", err.message);
+ goto fail;
+ }
+
+ if (pa_streq(name, OFONO_SERVICE)) {
+
+ if (old_owner && *old_owner) {
+ pa_log_debug("oFono disappeared");
+
+ if (hfdata->hf_audio_cards) {
+ pa_hashmap_free(hfdata->hf_audio_cards);
+ hfdata->hf_audio_cards = NULL;
+ }
+
+ if(hfdata->ofono_bus_id) {
+ pa_xfree(hfdata->ofono_bus_id);
+ hfdata->ofono_bus_id = NULL;
+ }
+ }
+
+ if (new_owner && *new_owner) {
+ pa_log_debug("oFono appeared");
+ hf_audio_agent_register(hfdata);
+ }
+ }
+
+ }
+
+fail:
+ dbus_error_free(&err);