static int rockchip_efuse_probe()

in rockchip-efuse.c [251:289]

• 33 lines of code
• 6 McCabe index (conditional complexity)

static int rockchip_efuse_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct nvmem_device *nvmem;
	struct rockchip_efuse_chip *efuse;
	const void *data;
	struct device *dev = &pdev->dev;

	data = of_device_get_match_data(dev);
	if (!data) {
		dev_err(dev, "failed to get match data\n");
		return -EINVAL;
	}

	efuse = devm_kzalloc(dev, sizeof(struct rockchip_efuse_chip),
			     GFP_KERNEL);
	if (!efuse)
		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	efuse->base = devm_ioremap_resource(dev, res);
	if (IS_ERR(efuse->base))
		return PTR_ERR(efuse->base);

	efuse->clk = devm_clk_get(dev, "pclk_efuse");
	if (IS_ERR(efuse->clk))
		return PTR_ERR(efuse->clk);

	efuse->dev = dev;
	if (of_property_read_u32(dev->of_node, "rockchip,efuse-size",
				 &econfig.size))
		econfig.size = resource_size(res);
	econfig.reg_read = data;
	econfig.priv = efuse;
	econfig.dev = efuse->dev;
	nvmem = devm_nvmem_register(dev, &econfig);

	return PTR_ERR_OR_ZERO(nvmem);
}