From: Mark Lord <liml@rtr.ca>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Malcolm Gillies <malcolm@g7.org>, linux-ide@vger.kernel.org
Subject: Re: CompactFlash and HD unhappy together on the same IDE channel
Date: Mon, 24 Sep 2007 18:03:00 -0400 [thread overview]
Message-ID: <46F83414.2040809@rtr.ca> (raw)
In-Reply-To: <20070923184045.6358014a@the-village.bc.nu>
Alan Cox wrote:
>> The solution is beginning to look more and more obvious: default to not use MDMA
>> modes for CF devices at boot. And eventually provide a sysfs or libata parameter
>> (or support/snoop SET_XFER_MODE) to change the mode later.
>
> I strongly disagree.
>
> We need to understand *why*, we need to fix any actual bugs we have.
> Lots and lots of people have no problems here. The people with problems
> and pure PATA all seem to have piix chips.
Well, there's a reasonable point.
But when we see a CF card on a *SATA* controller, we *know* there's a bridge chip
in there someplace, and we know that the common bridges don't do MWDMA.
Cheers
next prev parent reply other threads:[~2007-09-24 22:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-18 7:00 CompactFlash and HD unhappy together on the same IDE channel Malcolm Gillies
2007-08-18 20:05 ` Matt Sealey
2007-08-18 22:41 ` Alan Cox
2007-08-19 1:16 ` Mark Lord
2007-08-19 10:43 ` Malcolm Gillies
2007-08-19 14:18 ` Mark Lord
2007-08-20 7:34 ` Malcolm Gillies
2007-08-19 16:56 ` Alan Cox
2007-09-15 23:54 ` Malcolm Gillies
2007-09-22 18:12 ` Alan Cox
2007-09-23 14:49 ` Matt Sealey
2007-09-23 16:26 ` Mark Lord
2007-09-23 17:40 ` Alan Cox
2007-09-24 22:03 ` Mark Lord [this message]
2007-09-24 22:29 ` Alan Cox
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