Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2008 Freescale Semiconductor, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9
10#include <linux/device.h> /* devres_*(), devm_ioremap_release() */
11#include <linux/io.h> /* ioremap_flags() */
12#include <linux/module.h> /* EXPORT_SYMBOL() */
13
14/**
15 * devm_ioremap_prot - Managed ioremap_flags()
16 * @dev: Generic device to remap IO address for
17 * @offset: BUS offset to map
18 * @size: Size of map
19 * @flags: Page flags
20 *
21 * Managed ioremap_prot(). Map is automatically unmapped on driver
22 * detach.
23 */
24void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset,
25 size_t size, unsigned long flags)
26{
27 void __iomem **ptr, *addr;
28
29 ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
30 if (!ptr)
31 return NULL;
32
33 addr = ioremap_flags(offset, size, flags);
34 if (addr) {
35 *ptr = addr;
36 devres_add(dev, ptr);
37 } else
38 devres_free(ptr);
39
40 return addr;
41}
42EXPORT_SYMBOL(devm_ioremap_prot);