kernel-devel/module-basics/vain_plat/vain_plat_4.c


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static int __devexit vain_plat_remove(struct platform_device *pdev)
{
	struct vain_plat_info *info = platform_get_drvdata(pdev);
	struct resource *res;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	iounmap(info->base);
	release_mem_region(res->start, resource_size(res));
	platform_set_drvdata(pdev, NULL);

	kfree (info);

	return 0;
}

static struct platform_driver vain_plat_driver = {
	.driver		= {
		.name	= "vain_plat",
		.owner	= THIS_MODULE,
	},
	.probe		= vain_plat_probe,
	.remove		= __devexit_p(vain_plat_remove),
};