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Date: Sun, 19 Nov 2000 16:50:17 +0000
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
From: Anton Altaparmakov <aia21@cam.ac.uk>
Subject: Re: How to add a drive to DMA black list?
Cc: linux-kernel@vger.kernel.org
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At 11:26 17/11/2000, Alan Cox wrote:
> > drive problem, considering that another ide drive on the same controller
> > works fine with DMA enabled (a QUANTUM TRB850A) while the Conner
> > Peripherals 1275MB - CFS1275A fails with DMA enabled. They are in fact 
> both
>
>And the Conner drives work fine on a VIA MVP3 it seems. You need to try
>the drive with multiple controllers to be sure its not a PIIX bug that only
>trips on that drive (or indeed a bug in the combination)

I have now tried the drive (which is actually a seagate drive but it 
identifies itself as a conner) on my new Promise ATA-100 controller and the 
drive works fine with DMA enabled. So you were quite right, it's the PIIX 
driver/tuning which kills it.

Anton


-- 
      "Education is what remains after one has forgotten everything he 
learned in school." - Albert Einstein
-- 
Anton Altaparmakov  Voice: +44-(0)1223-333541(lab) / +44-(0)7712-632205(mobile)
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