PCI IRQ routing change broke PCMCIA/prism54 driver

David Woodhouse dwmw2 at infradead.org
Tue Aug 17 04:29:10 EDT 2004

On Sat, 2004-08-14 at 22:31 +0100, Russell King wrote:
> When in Cardbus mode, there is only one interrupt line for child
> devices, and this will be forwarded upstream from the bridge using
> the Cardbus bridge IRQ itself.  Therefore, all child devices of a
> Cardbus bridge will always have the same PCI IRQ as the Cardbus
> bridge to which it is connected.

Not always true. The TI PCI1420 can be configured to use two interrupt
outputs, for example.


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