Re: [PATCH] Avoid PC(?) specific cascade dma reservation in

Alan Cox (
04 Mar 2003 22:53:35 +0000

On Tue, 2003-03-04 at 18:49, Johan Adolfsson wrote:
> I guess the reservation of dma channel 4 for "cascade" is
> PC or chipset specific and we don't have such a thing in the
> CRIS (ETRAX100LX) chip and channel 4 clashes with external dma0.
> Perhaps a better fix is to #ifdef on something else or remove
> the cascade stuff entirely from this file, but I leave that
> to those who know better.
> Have no other arch been bitten by this?

I don't know of any PC cards that can support ISA DMA channel 4 so I
guess simply because of that it hasn't happened. Do you actually
know of any DMA 4 capable ISA devices or is it used for onboard
ISA devices ?

The ifdef is ugly. There should be a nicer way to do this.
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