static int ntb_epf_init_pci()

in hw/epf/ntb_hw_epf.c [564:626]

• 50 lines of code
• 8 McCabe index (conditional complexity)

static int ntb_epf_init_pci(struct ntb_epf_dev *ndev,
			    struct pci_dev *pdev)
{
	struct device *dev = ndev->dev;
	int ret;

	pci_set_drvdata(pdev, ndev);

	ret = pci_enable_device(pdev);
	if (ret) {
		dev_err(dev, "Cannot enable PCI device\n");
		goto err_pci_enable;
	}

	ret = pci_request_regions(pdev, "ntb");
	if (ret) {
		dev_err(dev, "Cannot obtain PCI resources\n");
		goto err_pci_regions;
	}

	pci_set_master(pdev);

	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
	if (ret) {
		ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
		if (ret) {
			dev_err(dev, "Cannot set DMA mask\n");
			goto err_dma_mask;
		}
		dev_warn(&pdev->dev, "Cannot DMA highmem\n");
	}

	ndev->ctrl_reg = pci_iomap(pdev, ndev->ctrl_reg_bar, 0);
	if (!ndev->ctrl_reg) {
		ret = -EIO;
		goto err_dma_mask;
	}

	ndev->peer_spad_reg = pci_iomap(pdev, ndev->peer_spad_reg_bar, 0);
	if (!ndev->peer_spad_reg) {
		ret = -EIO;
		goto err_dma_mask;
	}

	ndev->db_reg = pci_iomap(pdev, ndev->db_reg_bar, 0);
	if (!ndev->db_reg) {
		ret = -EIO;
		goto err_dma_mask;
	}

	return 0;

err_dma_mask:
	pci_clear_master(pdev);

err_pci_regions:
	pci_disable_device(pdev);

err_pci_enable:
	pci_set_drvdata(pdev, NULL);

	return ret;
}