From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ben Greear <greearb@candelatech.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: How to disable DMA for compact-flash disk?
Date: Tue, 11 Aug 2009 20:12:06 +0100 [thread overview]
Message-ID: <20090811201206.14556624@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <4A81BDA6.4080804@candelatech.com>
On Tue, 11 Aug 2009 11:51:18 -0700
Ben Greear <greearb@candelatech.com> wrote:
> I'm trying to use Fedora 11 with default kernel on an old via system
> that boots from compact flash. DMA is not supported on the CF for
> whatever reason, and in previous kernels, I've always disabled
> DMA, first with ide=nodma, and then later with
> ide_core.nodma=0.0 ide_core.nodma=0.1 ...
Fedora switched to libata some releases ago so
libata.dma=n
0 - off
1 - disk only
+ 2 disk/CD
+ 4 disk/CD/CFA
(so you can turn DMA off just for CFA devices providing they admit they
are CFA)
next prev parent reply other threads:[~2009-08-11 19:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-11 18:51 Ben Greear
2009-08-11 19:12 ` Alan Cox [this message]
2009-08-14 20:49 ` Ben Greear
2009-08-14 21:10 ` Alan Cox
2009-08-14 21:18 ` Ben Greear
2009-08-14 21:32 ` Alan Cox
2009-08-14 21:37 ` Ben Greear
2009-08-14 21:51 ` Ben Greear
2009-08-11 20:24 ` Krzysztof Halasa
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