/* * Copyright (C) 2008 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/device.h> /* devres_*(), devm_ioremap_release() */ #include <linux/io.h> /* ioremap_flags() */ #include <linux/module.h> /* EXPORT_SYMBOL() */ /** * devm_ioremap_prot - Managed ioremap_flags() * @dev: Generic device to remap IO address for * @offset: BUS offset to map * @size: Size of map * @flags: Page flags * * Managed ioremap_prot(). Map is automatically unmapped on driver * detach. */ void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset, size_t size, unsigned long flags) { void __iomem **ptr, *addr; ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; addr = ioremap_flags(offset, size, flags); if (addr) { *ptr = addr; devres_add(dev, ptr); } else devres_free(ptr); return addr; } EXPORT_SYMBOL(devm_ioremap_prot);