static int stm32_timer_cnt_probe()

in stm32-timer-cnt.c [314:351]

• 29 lines of code
• 4 McCabe index (conditional complexity)

static int stm32_timer_cnt_probe(struct platform_device *pdev)
{
	struct stm32_timers *ddata = dev_get_drvdata(pdev->dev.parent);
	struct device *dev = &pdev->dev;
	struct stm32_timer_cnt *priv;
	struct counter_device *counter;
	int ret;

	if (IS_ERR_OR_NULL(ddata))
		return -EINVAL;

	counter = devm_counter_alloc(dev, sizeof(*priv));
	if (!counter)
		return -ENOMEM;

	priv = counter_priv(counter);

	priv->regmap = ddata->regmap;
	priv->clk = ddata->clk;
	priv->max_arr = ddata->max_arr;

	counter->name = dev_name(dev);
	counter->parent = dev;
	counter->ops = &stm32_timer_cnt_ops;
	counter->counts = &stm32_counts;
	counter->num_counts = 1;
	counter->signals = stm32_signals;
	counter->num_signals = ARRAY_SIZE(stm32_signals);

	platform_set_drvdata(pdev, priv);

	/* Register Counter device */
	ret = devm_counter_add(dev, counter);
	if (ret < 0)
		dev_err_probe(dev, ret, "Failed to add counter\n");

	return ret;
}