static int meson_mx_efuse_probe()

in meson-mx-efuse.c [193:232]

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

static int meson_mx_efuse_probe(struct platform_device *pdev)
{
	const struct meson_mx_efuse_platform_data *drvdata;
	struct meson_mx_efuse *efuse;
	struct resource *res;

	drvdata = of_device_get_match_data(&pdev->dev);
	if (!drvdata)
		return -EINVAL;

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

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

	efuse->config.name = devm_kstrdup(&pdev->dev, drvdata->name,
					  GFP_KERNEL);
	efuse->config.owner = THIS_MODULE;
	efuse->config.dev = &pdev->dev;
	efuse->config.priv = efuse;
	efuse->config.stride = drvdata->word_size;
	efuse->config.word_size = drvdata->word_size;
	efuse->config.size = SZ_512;
	efuse->config.read_only = true;
	efuse->config.reg_read = meson_mx_efuse_read;

	efuse->core_clk = devm_clk_get(&pdev->dev, "core");
	if (IS_ERR(efuse->core_clk)) {
		dev_err(&pdev->dev, "Failed to get core clock\n");
		return PTR_ERR(efuse->core_clk);
	}

	efuse->nvmem = devm_nvmem_register(&pdev->dev, &efuse->config);

	return PTR_ERR_OR_ZERO(efuse->nvmem);
}