+ if (type != HUB_RESUME) {
+
+ /* Speed up system boot by using a delayed_work for the
+ * hub's initial power-up delays. This is pretty awkward
+ * and the implementation looks like a home-brewed sort of
+ * setjmp/longjmp, but it saves at least 100 ms for each
+ * root hub (assuming usbcore is compiled into the kernel
+ * rather than as a module). It adds up.
+ *
+ * This can't be done for HUB_RESUME or HUB_RESET_RESUME
+ * because for those activation types the ports have to be
+ * operational when we return. In theory this could be done
+ * for HUB_POST_RESET, but it's easier not to.
+ */
+ if (type == HUB_INIT) {
+ delay = hub_power_on(hub, false);
+ PREPARE_DELAYED_WORK(&hub->init_work, hub_init_func2);
+ schedule_delayed_work(&hub->init_work,
+ msecs_to_jiffies(delay));
+ return; /* Continues at init2: below */
+ } else {
+ hub_power_on(hub, true);
+ }
+ }
+ init2: