From: Oliver Joa <oliver@j-o-a.de>
To: linux-kernel@vger.kernel.org
Subject: How to Switch DMA off for only one Harddisk at Kernelboot
Date: Sun, 16 Dec 2007 19:06:04 +0100 [thread overview]
Message-ID: <4765690C.6010605@j-o-a.de> (raw)
Hi,
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
Olli
next reply other threads:[~2007-12-16 18:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-16 18:06 Oliver Joa [this message]
2007-12-16 19:25 ` How to Switch DMA off for only one Harddisk at Kernelboot Gabriel C
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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