static int pccardd()

in cs.c [592:692]
81 lines of code
24 McCabe index (conditional complexity)

static int pccardd(void *__skt)
{
	struct pcmcia_socket *skt = __skt;
	int ret;

	skt->thread = current;
	skt->socket = dead_socket;
	skt->ops->init(skt);
	skt->ops->set_socket(skt, &skt->socket);

	/* register with the device core */
	ret = device_register(&skt->dev);
	if (ret) {
		dev_warn(&skt->dev, "PCMCIA: unable to register socket\n");
		skt->thread = NULL;
		complete(&skt->thread_done);
		return 0;
	}
	ret = pccard_sysfs_add_socket(&skt->dev);
	if (ret)
		dev_warn(&skt->dev, "err %d adding socket attributes\n", ret);

	complete(&skt->thread_done);

	/* wait for userspace to catch up */
	msleep(250);

	set_freezable();
	for (;;) {
		unsigned long flags;
		unsigned int events;
		unsigned int sysfs_events;

		spin_lock_irqsave(&skt->thread_lock, flags);
		events = skt->thread_events;
		skt->thread_events = 0;
		sysfs_events = skt->sysfs_events;
		skt->sysfs_events = 0;
		spin_unlock_irqrestore(&skt->thread_lock, flags);

		mutex_lock(&skt->skt_mutex);
		if (events & SS_DETECT)
			socket_detect_change(skt);

		if (sysfs_events) {
			if (sysfs_events & PCMCIA_UEVENT_EJECT)
				socket_remove(skt);
			if (sysfs_events & PCMCIA_UEVENT_INSERT)
				socket_insert(skt);
			if ((sysfs_events & PCMCIA_UEVENT_SUSPEND) &&
				!(skt->state & SOCKET_CARDBUS)) {
				if (skt->callback)
					ret = skt->callback->suspend(skt);
				else
					ret = 0;
				if (!ret) {
					socket_suspend(skt);
					msleep(100);
				}
			}
			if ((sysfs_events & PCMCIA_UEVENT_RESUME) &&
				!(skt->state & SOCKET_CARDBUS)) {
				ret = socket_resume(skt);
				if (!ret && skt->callback)
					skt->callback->resume(skt);
			}
			if ((sysfs_events & PCMCIA_UEVENT_REQUERY) &&
				!(skt->state & SOCKET_CARDBUS)) {
				if (!ret && skt->callback)
					skt->callback->requery(skt);
			}
		}
		mutex_unlock(&skt->skt_mutex);

		if (events || sysfs_events)
			continue;

		set_current_state(TASK_INTERRUPTIBLE);
		if (kthread_should_stop())
			break;

		schedule();

		try_to_freeze();
	}
	/* make sure we are running before we exit */
	__set_current_state(TASK_RUNNING);

	/* shut down socket, if a device is still present */
	if (skt->state & SOCKET_PRESENT) {
		mutex_lock(&skt->skt_mutex);
		socket_remove(skt);
		mutex_unlock(&skt->skt_mutex);
	}

	/* remove from the device core */
	pccard_sysfs_remove_socket(&skt->dev);
	device_unregister(&skt->dev);

	return 0;
}