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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() */ | |
5a0e3ad6 | 11 | #include <linux/gfp.h> |
40f1ce7f | 12 | #include <linux/io.h> /* ioremap_prot() */ |
4b16f8e2 | 13 | #include <linux/export.h> /* EXPORT_SYMBOL() */ |
b41e5fff EM |
14 | |
15 | /** | |
40f1ce7f | 16 | * devm_ioremap_prot - Managed ioremap_prot() |
b41e5fff EM |
17 | * @dev: Generic device to remap IO address for |
18 | * @offset: BUS offset to map | |
19 | * @size: Size of map | |
20 | * @flags: Page flags | |
21 | * | |
22 | * Managed ioremap_prot(). Map is automatically unmapped on driver | |
23 | * detach. | |
24 | */ | |
25 | void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset, | |
26 | size_t size, unsigned long flags) | |
27 | { | |
28 | void __iomem **ptr, *addr; | |
29 | ||
30 | ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); | |
31 | if (!ptr) | |
32 | return NULL; | |
33 | ||
40f1ce7f | 34 | addr = ioremap_prot(offset, size, flags); |
b41e5fff EM |
35 | if (addr) { |
36 | *ptr = addr; | |
37 | devres_add(dev, ptr); | |
38 | } else | |
39 | devres_free(ptr); | |
40 | ||
41 | return addr; | |
42 | } | |
43 | EXPORT_SYMBOL(devm_ioremap_prot); |