static int tegra_ahb_probe()

in tegra-ahb.c [239:268]

• 24 lines of code
• 5 McCabe index (conditional complexity)

static int tegra_ahb_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct tegra_ahb *ahb;
	size_t bytes;

	bytes = sizeof(*ahb) + sizeof(u32) * ARRAY_SIZE(tegra_ahb_gizmo);
	ahb = devm_kzalloc(&pdev->dev, bytes, GFP_KERNEL);
	if (!ahb)
		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	/* Correct the IP block base address if necessary */
	if (res &&
	    (res->start & INCORRECT_BASE_ADDR_LOW_BYTE) ==
	    INCORRECT_BASE_ADDR_LOW_BYTE) {
		dev_warn(&pdev->dev, "incorrect AHB base address in DT data - enabling workaround\n");
		res->start -= INCORRECT_BASE_ADDR_LOW_BYTE;
	}

	ahb->regs = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(ahb->regs))
		return PTR_ERR(ahb->regs);

	ahb->dev = &pdev->dev;
	platform_set_drvdata(pdev, ahb);
	tegra_ahb_gizmo_init(ahb);
	return 0;
}