Messages in this thread Patch in this message | | | From | Liviu Dudau <> | Subject | [PATCH v2 1/3] Fix ioport_map() for !CONFIG_GENERIC_IOMAP cases. | Date | Thu, 27 Feb 2014 13:09:57 +0000 |
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The inline version of ioport_map() that gets used when !CONFIG_GENERIC_IOMAP is wrong. It returns a mapped (i.e. virtual) address that can start from zero and completely ignores the PCI_IOBASE and IO_SPACE_LIMIT that most architectures that use !CONFIG_GENERIC_MAP define.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index d5afe96..df72051 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -331,7 +331,7 @@ static inline void iounmap(void __iomem *addr) #ifndef CONFIG_GENERIC_IOMAP static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) { - return (void __iomem *) port; + return (void __iomem *)(PCI_IOBASE + (port & IO_SPACE_LIMIT)); } static inline void ioport_unmap(void __iomem *p) -- 1.9.0
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