+ had_master = seat_has_master_device(s);
+
+ /* We keep the device list sorted by the "master" flag. That is, master
+ * devices are at the front, other devices at the tail. As there is no
+ * way to easily add devices at the list-tail, we need to iterate the
+ * list to find the first non-master device when adding non-master
+ * devices. We assume there is only a few (normally 1) master devices
+ * per seat, so we iterate only a few times. */
+
+ if (d->master || !s->devices)
+ LIST_PREPEND(devices, s->devices, d);
+ else {
+ LIST_FOREACH(devices, i, s->devices) {
+ if (!i->devices_next || !i->master) {
+ LIST_INSERT_AFTER(devices, s->devices, i, d);
+ break;
+ }
+ }
+ }
+
+ if (!had_master && d->master)
+ seat_send_changed(s, "CanGraphical", NULL);