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