int mISDN_dsp_element_register()

in mISDN/dsp_pipeline.c [68:112]

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

int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
{
	struct dsp_element_entry *entry;
	int ret, i;

	if (!elem)
		return -EINVAL;

	entry = kzalloc(sizeof(struct dsp_element_entry), GFP_ATOMIC);
	if (!entry)
		return -ENOMEM;

	entry->elem = elem;

	entry->dev.class = elements_class;
	entry->dev.release = mISDN_dsp_dev_release;
	dev_set_drvdata(&entry->dev, elem);
	dev_set_name(&entry->dev, "%s", elem->name);
	ret = device_register(&entry->dev);
	if (ret) {
		printk(KERN_ERR "%s: failed to register %s\n",
		       __func__, elem->name);
		goto err1;
	}
	list_add_tail(&entry->list, &dsp_elements);

	for (i = 0; i < ARRAY_SIZE(element_attributes); ++i) {
		ret = device_create_file(&entry->dev,
					 &element_attributes[i]);
		if (ret) {
			printk(KERN_ERR "%s: failed to create device file\n",
			       __func__);
			goto err2;
		}
	}

	return 0;

err2:
	device_unregister(&entry->dev);
	return ret;
err1:
	kfree(entry);
	return ret;
}