int soc_pcmcia_add_one()

in soc_common.c [796:889]

• 70 lines of code
• 11 McCabe index (conditional complexity)

int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
{
	int ret;

	skt->cs_state = dead_socket;

	timer_setup(&skt->poll_timer, soc_common_pcmcia_poll_event, 0);
	skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;

	ret = request_resource(&iomem_resource, &skt->res_skt);
	if (ret)
		goto out_err_1;

	ret = request_resource(&skt->res_skt, &skt->res_io);
	if (ret)
		goto out_err_2;

	ret = request_resource(&skt->res_skt, &skt->res_mem);
	if (ret)
		goto out_err_3;

	ret = request_resource(&skt->res_skt, &skt->res_attr);
	if (ret)
		goto out_err_4;

	skt->virt_io = ioremap(skt->res_io.start, 0x10000);
	if (skt->virt_io == NULL) {
		ret = -ENOMEM;
		goto out_err_5;
	}

	/*
	 * We initialize default socket timing here, because
	 * we are not guaranteed to see a SetIOMap operation at
	 * runtime.
	 */
	skt->ops->set_timing(skt);

	ret = soc_pcmcia_hw_init(skt);
	if (ret)
		goto out_err_6;

	skt->socket.ops = &soc_common_pcmcia_operations;
	skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
	skt->socket.resource_ops = &pccard_static_ops;
	skt->socket.irq_mask = 0;
	skt->socket.map_size = PAGE_SIZE;
	skt->socket.io_offset = (unsigned long)skt->virt_io;

	skt->status = soc_common_pcmcia_skt_state(skt);

#ifdef CONFIG_CPU_FREQ
	if (skt->ops->frequency_change) {
		skt->cpufreq_nb.notifier_call = soc_common_pcmcia_cpufreq_nb;

		ret = cpufreq_register_notifier(&skt->cpufreq_nb,
						CPUFREQ_TRANSITION_NOTIFIER);
		if (ret < 0)
			dev_err(skt->socket.dev.parent,
				"unable to register CPU frequency change notifier for PCMCIA (%d)\n",
				ret);
	}
#endif

	ret = pcmcia_register_socket(&skt->socket);
	if (ret)
		goto out_err_7;

	ret = device_create_file(&skt->socket.dev, &dev_attr_status);
	if (ret)
		goto out_err_8;

	return ret;

 out_err_8:
	del_timer_sync(&skt->poll_timer);
	pcmcia_unregister_socket(&skt->socket);

 out_err_7:
	soc_pcmcia_hw_shutdown(skt);
 out_err_6:
	iounmap(skt->virt_io);
 out_err_5:
	release_resource(&skt->res_attr);
 out_err_4:
	release_resource(&skt->res_mem);
 out_err_3:
	release_resource(&skt->res_io);
 out_err_2:
	release_resource(&skt->res_skt);
 out_err_1:

	return ret;
}