参照元

説明

引数

返り値

参考

実装

/**
 * platform_device_add - add a platform device to device hierarchy
 * @pdev: platform device we're adding
 *
 * This is part 2 of platform_device_register(), though may be called
 * separately _iff_ pdev was allocated by platform_device_alloc().
 */
int platform_device_add(struct platform_device *pdev)
{
	int i, ret = 0;

	if (!pdev)
		return -EINVAL;

	if (!pdev->dev.parent)
		pdev->dev.parent = &platform_bus;

	pdev->dev.bus = &platform_bus_type;

	if (pdev->id != -1)
		dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
	else
		dev_set_name(&pdev->dev, "%s", pdev->name);

	for (i = 0; i < pdev->num_resources; i++) {
		struct resource *p, *r = &pdev->resource[i];

		if (r->name == NULL)
			r->name = dev_name(&pdev->dev);

		p = r->parent;
		if (!p) {
			if (resource_type(r) == IORESOURCE_MEM)
				p = &iomem_resource;
			else if (resource_type(r) == IORESOURCE_IO)
				p = &ioport_resource;
		}

		if (p && insert_resource(p, r)) {
			printk(KERN_ERR
			       "%s: failed to claim resource %d\n",
			       dev_name(&pdev->dev), i);
			ret = -EBUSY;
			goto failed;
		}
	}

	pr_debug("Registering platform device '%s'. Parent at %s\n",
		 dev_name(&pdev->dev), dev_name(pdev->dev.parent));

	ret = device_add(&pdev->dev);
	if (ret == 0)
		return ret;

 failed:
	while (--i >= 0) {
		struct resource *r = &pdev->resource[i];
		unsigned long type = resource_type(r);

		if (type == IORESOURCE_MEM || type == IORESOURCE_IO)
			release_resource(r);
	}

	return ret;
}
EXPORT_SYMBOL_GPL(platform_device_add);

コメント


トップ   新規 一覧 検索 最終更新   ヘルプ   最終更新のRSS