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Date: Thu, 11 Sep 2003 18:20:09 +0200
From: Flavio <flavio26@iname.com>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
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Subject: Re: PROBLEM:SCSI repeatable 2.4.22 bug
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Sorry for sending previous email unfinished,
my finger was quicker than my mind...

I am trying to switch off dma on DVD-ROM which is used by ide-scsi,
hdparm is useless, should I try to hdparm it before ide-scsi driver 
loads or use some command under scsi?

TIA,

Flavio


> On Mer, 2003-09-10 at 13:39, flavio wrote:
>> Hi,
>>
>> the hd and dvd light are constantly on from boot onwards (using vanilla
>> 2.4.22 and the /var/log/messages is a sequence of messages as in
>> attachment).
>> 2.4.20 vanilla has no problems whatsoever...
> 
> Your drive is returning more data than it was asked for or expected.
> What model drives do you have and does turning off DMA for non disk fix
> it ?

I have a fujitsu laptop with:

IC25N030ATCS04-0 ibm 30gb ide drive

ide dvd/cdrw drive using ide-scsi driver:

cat /proc/scsi/scsi:
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
     Vendor: TOSHIBA  Model: DVD-ROM SD-R2212 Rev: 1F15
     Type:   CD-ROM                           ANSI SCSI revision: 02

hdparm is not present on disk, so I suppose hd parameters are not
changed by rc scripts...