From: Chuck Ebbert <cebbert@redhat.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
akpm@osdl.org, linux-ide@vger.kernel.org
Subject: Re: [PATCH] libata: Add a drivers/ide style DMA disable
Date: Fri, 14 Sep 2007 13:17:25 -0400 [thread overview]
Message-ID: <46EAC225.70003@redhat.com> (raw)
In-Reply-To: <46E1D4FB.8030409@garzik.org>
On 09/07/2007 06:47 PM, Jeff Garzik 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
>>>
>
> FWIW -- as I noted to Alan personally at KS, I would rather drop the
> "pata_" and have it apply to all, PATA or SATA.
>
Not sure that's a good idea for people who need to use it as a workaround.
E.g. they might have DMA working on some SATA devices but not on PATA, and
only want to disable the PATA DMA. Either adding a separate "sata_dma" or
additional bitfields for SATA would be useful.
next prev parent reply other threads:[~2007-09-14 17:17 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 [this message]
2007-09-14 19:54 ` Bartlomiej Zolnierkiewicz
2007-09-19 15:53 ` Chuck Ebbert
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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