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    Subject[PATCH, RAW] IRQ: Maintain irq number globally rather than passing to IRQ handlers
    Here is the raw, un-split-up first pass of the irq argument removal 
    patch (500K): http://gtf.org/garzik/misc/patch.irq-remove

    Notes:

    * raw first pass, DO NOT APPLY.

    * this was useful work: it turned up several minor bugs

    * Do we mark irq handlers FASTCALL? If not, we probably can now.

    * I also turned up a few obvious places that dhowells missed in his
    pt_regs patch, inevitably in non-x86 arches that probably were not built.

    * I need to fix up ~10 or so drivers that called their interrupt
    handlers directly, then used a 'irq == 0' test to determine whether the
    interrupt handler was called internally, or by the system.

    * not sure yet if I want to mark the parport "irq handler" functions as
    truly irqreturn_t

    * Hopefully I will have this polished by the end of the day.


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