+static int ap_bus_suspend(struct device *dev, pm_message_t state)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ unsigned long flags;
+
+ if (!ap_suspend_flag) {
+ ap_suspend_flag = 1;
+
+ /* Disable scanning for devices, thus we do not want to scan
+ * for them after removing.
+ */
+ del_timer_sync(&ap_config_timer);
+ if (ap_work_queue != NULL) {
+ destroy_workqueue(ap_work_queue);
+ ap_work_queue = NULL;
+ }
+ tasklet_disable(&ap_tasklet);
+ }
+ /* Poll on the device until all requests are finished. */
+ do {
+ flags = 0;
+ __ap_poll_device(ap_dev, &flags);
+ } while ((flags & 1) || (flags & 2));
+
+ ap_device_remove(dev);
+ return 0;
+}
+
+static int ap_bus_resume(struct device *dev)
+{
+ int rc = 0;
+ struct ap_device *ap_dev = to_ap_dev(dev);
+
+ if (ap_suspend_flag) {
+ ap_suspend_flag = 0;
+ if (!ap_interrupts_available())
+ ap_interrupt_indicator = NULL;
+ ap_device_probe(dev);
+ ap_reset(ap_dev);
+ setup_timer(&ap_dev->timeout, ap_request_timeout,
+ (unsigned long) ap_dev);
+ ap_scan_bus(NULL);
+ init_timer(&ap_config_timer);
+ ap_config_timer.function = ap_config_timeout;
+ ap_config_timer.data = 0;
+ ap_config_timer.expires = jiffies + ap_config_time * HZ;
+ add_timer(&ap_config_timer);
+ ap_work_queue = create_singlethread_workqueue("kapwork");
+ if (!ap_work_queue)
+ return -ENOMEM;
+ tasklet_enable(&ap_tasklet);
+ if (!ap_using_interrupts())
+ ap_schedule_poll_timer();
+ else
+ tasklet_schedule(&ap_tasklet);
+ if (ap_thread_flag)
+ rc = ap_poll_thread_start();
+ } else {
+ ap_device_probe(dev);
+ ap_reset(ap_dev);
+ setup_timer(&ap_dev->timeout, ap_request_timeout,
+ (unsigned long) ap_dev);
+ }
+
+ return rc;
+}
+