static int ti_syscon_reset_probe()

in reset-ti-syscon.c [167:218]

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

static int ti_syscon_reset_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *np = dev->of_node;
	struct ti_syscon_reset_data *data;
	struct regmap *regmap;
	const __be32 *list;
	struct ti_syscon_reset_control *controls;
	int size, nr_controls, i;

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

	regmap = syscon_node_to_regmap(np->parent);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	list = of_get_property(np, "ti,reset-bits", &size);
	if (!list || (size / sizeof(*list)) % 7 != 0) {
		dev_err(dev, "invalid DT reset description\n");
		return -EINVAL;
	}

	nr_controls = (size / sizeof(*list)) / 7;
	controls = devm_kcalloc(dev, nr_controls, sizeof(*controls),
				GFP_KERNEL);
	if (!controls)
		return -ENOMEM;

	for (i = 0; i < nr_controls; i++) {
		controls[i].assert_offset = be32_to_cpup(list++);
		controls[i].assert_bit = be32_to_cpup(list++);
		controls[i].deassert_offset = be32_to_cpup(list++);
		controls[i].deassert_bit = be32_to_cpup(list++);
		controls[i].status_offset = be32_to_cpup(list++);
		controls[i].status_bit = be32_to_cpup(list++);
		controls[i].flags = be32_to_cpup(list++);
	}

	data->rcdev.ops = &ti_syscon_reset_ops;
	data->rcdev.owner = THIS_MODULE;
	data->rcdev.of_node = np;
	data->rcdev.nr_resets = nr_controls;
	data->regmap = regmap;
	data->controls = controls;
	data->nr_controls = nr_controls;

	platform_set_drvdata(pdev, data);

	return devm_reset_controller_register(dev, &data->rcdev);
}