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Date: Tue, 12 Mar 2002 15:20:24 +0000 (GMT)
From: Matthew Kirkwood <matthew@hairy.beasts.org>
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To: "Justin T. Gibbs" <gibbs@scsiguy.com>
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Subject: Re: aic7xxx: Slow negotiation? 
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On Mon, 11 Mar 2002, Justin T. Gibbs wrote:

> >The new aic7xxx driver (in 2.4.17, 2.5.1-pre1 and 2.5.6, at
> >least) negotiates only 11.626MB/s transfers from my disks.
> >The old one can extract 40MB/s transfers (though the disks
> >themselves can only do a little over 20MB/s each).
>
> Go into SCSI-Select and change all of the sync rate values to
> something other than you want.  Save the changes.  Reboot.  Go back
> into SCSI-Select and change the sync values to what you want. The
> driver will then recognize them.

Worked a treat, thanks very much.

> Some MB manufacturers using the aic7895 screwed up the initialation of
> the serial eeprom while they were assembling their boards.  The old
> driver tries to work around this, but the work-around means converting
> one of the lower sync rates into meaning "full speed". I decided that
> just wasn't safe to put in the new driver.

Is a warning printk() possible?

Cheers,
Matthew.

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