static int mxs_ocotp_probe()

in mxs-ocotp.c [138:184]

• 37 lines of code
• 9 McCabe index (conditional complexity)

static int mxs_ocotp_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	const struct mxs_data *data;
	struct mxs_ocotp *otp;
	const struct of_device_id *match;
	int ret;

	match = of_match_device(dev->driver->of_match_table, dev);
	if (!match || !match->data)
		return -EINVAL;

	otp = devm_kzalloc(dev, sizeof(*otp), GFP_KERNEL);
	if (!otp)
		return -ENOMEM;

	otp->base = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(otp->base))
		return PTR_ERR(otp->base);

	otp->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(otp->clk))
		return PTR_ERR(otp->clk);

	ret = clk_prepare(otp->clk);
	if (ret < 0) {
		dev_err(dev, "failed to prepare clk: %d\n", ret);
		return ret;
	}

	ret = devm_add_action_or_reset(&pdev->dev, mxs_ocotp_action, otp->clk);
	if (ret)
		return ret;

	data = match->data;

	ocotp_config.size = data->size;
	ocotp_config.priv = otp;
	ocotp_config.dev = dev;
	otp->nvmem = devm_nvmem_register(dev, &ocotp_config);
	if (IS_ERR(otp->nvmem))
		return PTR_ERR(otp->nvmem);

	platform_set_drvdata(pdev, otp);

	return 0;
}