Re: raw memory & PCI bus access
Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 22 Oct 1999 16:13:45 +0100 (BST)
> documentation, where you don't know how to acknowledge the interrupt
> (yet), this strategy works:
>
> - Select an UNSHARED interrupt line.
>
> - Call disable_irq() when the interrupt is received,
> and enable_irq() when you're ready to receive another.
>
> Of course this is slow, prone to failure, won't work everywhere and
> generally bad. No driver in the kernel rhould even do this.
Its a good debugging aid yes. I've done this myself when trying to get the
ESS maestro going and called the IRQ on the timer tick by hand 8)
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