static int idt_pci_probe()

in hw/idt/ntb_hw_idt.c [2735:2799]

• 37 lines of code
• 7 McCabe index (conditional complexity)

static int idt_pci_probe(struct pci_dev *pdev,
			 const struct pci_device_id *id)
{
	struct idt_ntb_dev *ndev;
	int ret;

	/* Check whether IDT PCIe-switch is properly pre-initialized */
	ret = idt_check_setup(pdev);
	if (ret != 0)
		return ret;

	/* Allocate the memory for IDT NTB device data */
	ndev = idt_create_dev(pdev, id);
	if (IS_ERR(ndev))
		return PTR_ERR(ndev);

	/* Initialize the basic PCI subsystem of the device */
	ret = idt_init_pci(ndev);
	if (ret != 0)
		return ret;

	/* Scan ports of the IDT PCIe-switch */
	(void)idt_scan_ports(ndev);

	/* Initialize NTB link events subsystem */
	idt_init_link(ndev);

	/* Initialize MWs subsystem */
	ret = idt_init_mws(ndev);
	if (ret != 0)
		goto err_deinit_link;

	/* Initialize Messaging subsystem */
	idt_init_msg(ndev);

	/* Initialize hwmon interface */
	idt_init_temp(ndev);

	/* Initialize IDT interrupts handler */
	ret = idt_init_isr(ndev);
	if (ret != 0)
		goto err_deinit_link;

	/* Register IDT NTB devices on the NTB bus */
	ret = idt_register_device(ndev);
	if (ret != 0)
		goto err_deinit_isr;

	/* Initialize DebugFS info node */
	(void)idt_init_dbgfs(ndev);

	/* IDT PCIe-switch NTB driver is finally initialized */
	dev_info(&pdev->dev, "IDT NTB device is ready");

	/* May the force be with us... */
	return 0;

err_deinit_isr:
	idt_deinit_isr(ndev);
err_deinit_link:
	idt_deinit_link(ndev);
	idt_deinit_pci(ndev);

	return ret;
}