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    SubjectRe: Aic7xxx and Aic79xx Driver Updates

    On 2 May 2003, James Bottomley wrote:
    >
    > I'm not asking for any changes to the way you do 2.4, just for 2.5 where
    > we have no vendor versions to support and there should only be a single
    > tree.

    The way the backwards-compatibility is _meant_ to work is that a driver
    can just do this:

    #ifndef IRQ_RETVAL
    typedef void irqreturn_t;
    #define IRQ_NONE
    #define IRQ_HANDLED
    #define IRQ_RETVAL(x)
    #endif

    and after that you can just use the 2.5.x semantics even with a 2.4.x
    kernel.

    Which is nice and clean, and allows you to support old kernels _without_
    having any translation layer.

    Linus

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