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


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static int 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;
}