From: Chuck Ebbert <cebbert@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: akpm@osdl.org, linux-ide@vger.kernel.org, jeff@garzik.org
Subject: Re: [PATCH] libata: Add a drivers/ide style DMA disable
Date: Wed, 19 Sep 2007 11:53:05 -0400 [thread overview]
Message-ID: <46F145E1.1050107@redhat.com> (raw)
In-Reply-To: <20070822233710.415faaf0@the-village.bc.nu>
On 08/22/2007 06:37 PM, Alan Cox wrote:
> This is useful when debugging, handling problem systems, or for
> distributions just to get the system installed so it can be sorted
> out later.
>
> This is a bit smarter than the old IDE one and lets you do
>
> libata.pata_dma=0 Disable all PATA DMA like old IDE
> libata.pata_dma=1 Disk DMA only
> libata.pata_dma=2 ATAPI DMA only
> libata.pata_dma=4 CF DMA only
>
> (or combinations thereof - 0,1,3 being the useful ones I suspect)
>
This doesn't help distro installers with modular libata, as there's
no good way to get the parameter to the driver. (libata.pata_dma=0
just causes "unrecognized parameter" message on boot.)
next prev parent reply other threads:[~2007-09-19 15:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-22 22:37 [PATCH] libata: Add a drivers/ide style DMA disable Alan Cox
2007-09-07 3:58 ` Tejun Heo
2007-09-07 22:47 ` Jeff Garzik
2007-09-08 6:01 ` Tejun Heo
2007-09-08 18:42 ` Alan Cox
2007-09-14 17:17 ` Chuck Ebbert
2007-09-14 19:54 ` Bartlomiej Zolnierkiewicz
2007-09-19 15:53 ` Chuck Ebbert [this message]
2007-09-19 16:40 ` Alan Cox
2007-09-20 1:18 ` Tejun Heo
2007-10-02 16:38 ` Jeff Garzik
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