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| author | Matthias Brugger <matthias.bgg@gmail.com> | 2014-07-18 11:36:39 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2014-07-23 12:02:30 +0200 |
| commit | efd342fb0031a17758571dce42e3f373d94e2fec (patch) | |
| tree | 914578b4b0944ae5ca884e18ffe13cd223dccb14 /include/linux/io.h | |
| parent | 7e1391876c8f95df9241deb78fa98e799e7bb05e (diff) | |
| download | lwn-efd342fb0031a17758571dce42e3f373d94e2fec.tar.gz lwn-efd342fb0031a17758571dce42e3f373d94e2fec.zip | |
of: Provide a function to request and map memory
A call to of_iomap does not request the memory region. This patch adds the
function of_io_request_and_map which requests the memory region before
mapping it.
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Suggested-by: Rob Herring <robh@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'include/linux/io.h')
| -rw-r--r-- | include/linux/io.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/io.h b/include/linux/io.h index b76e6e545806..d5fc9b8d8b03 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -58,6 +58,8 @@ static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr) } #endif +#define IOMEM_ERR_PTR(err) (__force void __iomem *)ERR_PTR(err) + void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, unsigned long size); void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset, |