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From: Gabriel C <nix.or.die@googlemail.com>
To: Oliver Joa <oliver@j-o-a.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to Switch DMA off for only one Harddisk at Kernelboot
Date: Sun, 16 Dec 2007 20:25:28 +0100	[thread overview]
Message-ID: <47657BA8.3020004@googlemail.com> (raw)
In-Reply-To: <4765690C.6010605@j-o-a.de>

Oliver Joa wrote:
> Hi,

Hi Oliver ,

> 
> how can I tell the kernel not to probe DMA for a specific harddisk (e.g. 
> hda). My first Drive (hda) is a Compact-Flash Card which can not do DMA. 
> The kernel tries at boot to switch to DMA but fails. If I use ide=nodma, 
> the kernel boots about 2 minutes faster, but then I can not switch on 
> DMA for the second Drive (hdc) which is a normal Harddisk. Do I have to 
> live with this 2 minutes waiting time or is there another solution? I 
> did not find any kernel-parameter for this purpose.
> 
> Sorry if I ask here, but I can not find any solution, and I asked 
> already in other groups.
> 
> Thank you very much

Should work with hda=nodma or ideX=nodma ( where X is your HDD nr , in your case is 0 )

Also have a look at Documentation/ide.txt.

> Olli

Gabriel

  reply	other threads:[~2007-12-16 19:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-16 18:06 How to Switch DMA off for only one Harddisk at Kernelboot Oliver Joa
2007-12-16 19:25 ` Gabriel C [this message]
2007-12-16 19:33   ` Oliver Joa
2007-12-16 19:45     ` Gabriel C
2007-12-16 19:53       ` Oliver Joa
2007-12-16 20:31         ` Gabriel C
2007-12-29 11:50           ` Konstantin A. Lepikhov
2007-12-16 20:16 ` Alan Cox
2007-12-17 11:17   ` Oliver Joa
2007-12-17 11:58     ` Bartlomiej Zolnierkiewicz
2007-12-17 22:32 ` Lennart Sorensen
2007-12-17 23:44   ` Oliver Joa
2007-12-18  0:04   ` Alan Cox

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