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    Subject[PATCH v2 1/3] Fix ioport_map() for !CONFIG_GENERIC_IOMAP cases.
    Date
    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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