Re: 2.4.19: no DMA for IDE with Intel i845e

From: Jeremy Fitzhardinge (
Date: Sun Aug 04 2002 - 19:35:03 EST

On Sun, 2002-08-04 at 18:49, Alan Cox wrote:
    On Mon, 2002-08-05 at 01:00, Jeremy Fitzhardinge wrote:
> I just rebooted with 2.4.19, and I find that there's no DMA on my ide
> interface, and it is refusing to honour 'hdparm -d1 /dev/hda'.
    I'm slowly working through fixing the new BIOS behaviour. For your case
    2.4.19-ac1 ought to do the job. 2.4.19-ac2 fixed it but has some rather
    dramatic side effects. 2.4.19-ac3 is a more invasive but more correct
    proposed answer..
-ac1 seems to work, but I don't really understand how. I've looked
through the drivers/ide and arch/i386 changes, but I don't see what
makes the difference.


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