static int mcb_lpc_probe()

in mcb-lpc.c [22:71]

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

static int mcb_lpc_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct priv *priv;
	int ret = 0;

	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!priv->mem) {
		dev_err(&pdev->dev, "No Memory resource\n");
		return -ENODEV;
	}

	res = devm_request_mem_region(&pdev->dev, priv->mem->start,
				      resource_size(priv->mem),
				      KBUILD_MODNAME);
	if (!res) {
		dev_err(&pdev->dev, "Failed to request IO memory\n");
		return -EBUSY;
	}

	priv->base = devm_ioremap(&pdev->dev, priv->mem->start,
				  resource_size(priv->mem));
	if (!priv->base) {
		dev_err(&pdev->dev, "Cannot ioremap\n");
		return -ENOMEM;
	}

	platform_set_drvdata(pdev, priv);

	priv->bus = mcb_alloc_bus(&pdev->dev);
	if (IS_ERR(priv->bus))
		return PTR_ERR(priv->bus);

	ret = chameleon_parse_cells(priv->bus, priv->mem->start, priv->base);
	if (ret < 0) {
		mcb_release_bus(priv->bus);
		return ret;
	}

	dev_dbg(&pdev->dev, "Found %d cells\n", ret);

	mcb_bus_add_devices(priv->bus);

	return 0;

}