From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Tejun Heo <htejun@gmail.com>
Cc: Alan <alan@lxorguk.ukuu.org.uk>,
bzolnier@gmail.com, linux-ide@vger.kernel.org
Subject: Re: [PATCH] amd74xx: don't configure udma mode higher than BIOS did
Date: Mon, 05 Feb 2007 18:32:11 +0300 [thread overview]
Message-ID: <45C74DFB.5030703@ru.mvista.com> (raw)
In-Reply-To: <45C73A3E.6080700@gmail.com>
Tejun Heo wrote:
> CK804 IDE, at least mine, reports 80c in a lot of cases where it
> shouldn't. I dunno the reason but it also makes drives confused about
> cable type. Maybe it has the wrong capacitor attached or something.
> This is A8N-E from ASUS, probably one of the popular ones using nf4.
> When that happens, libata EH does its job and slows the interface to
> udma33 after quite a few error messages. On IDE, if this happens, the
> drive is put into PIO mode making the machine painful to use.
Why? The old IDE core should just be downgrading UDMA to a speed where it
starts working (i.e. 44 or 33 MB/s usually).
MBR, Sergei
prev parent reply other threads:[~2007-02-05 15:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-05 7:58 [PATCH] amd74xx: don't configure udma mode higher than BIOS did Tejun Heo
2007-02-05 11:24 ` Alan
2007-02-05 12:16 ` Tejun Heo
2007-02-05 12:33 ` Tejun Heo
2007-02-05 13:24 ` Alan
2007-02-05 14:17 ` Tejun Heo
2007-02-05 13:22 ` Alan
2007-02-05 14:07 ` Tejun Heo
2007-02-05 14:34 ` Nvidia cable detection problems (was [PATCH] amd74xx: don't configure udma mode higher than BIOS did) Alan
2007-02-05 14:50 ` Tejun Heo
2007-02-05 15:49 ` Alan
[not found] ` <58cb370e0702050709w1b7682dr5dff9e7ce69465a@mail.gmail.com>
2007-02-05 17:08 ` Allen Martin
2007-02-05 17:08 ` Allen Martin
2007-02-05 18:12 ` Alan
2007-02-05 18:12 ` Alan
2007-02-05 18:36 ` Tejun Heo
2007-02-05 18:55 ` Bartlomiej Zolnierkiewicz
2007-02-05 19:15 ` Tejun Heo
2007-02-05 21:27 ` Bartlomiej Zolnierkiewicz
2007-02-05 22:02 ` Alan
2007-02-05 22:00 ` Bartlomiej Zolnierkiewicz
2007-02-05 19:13 ` Alan
2007-02-05 21:43 ` Jeff Garzik
2007-02-05 21:11 ` Nvidia cable detection problems & ACPI (beware, slight off-top) Oleg Verych
2007-02-05 22:04 ` Alan
2007-02-05 21:55 ` Jeff Garzik
2007-02-05 22:42 ` Oleg Verych
2007-02-05 22:51 ` Jeff Garzik
2007-02-05 15:32 ` Sergei Shtylyov [this message]
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