Subject: Re: dynamic configuration (was Re: PR#4094)
To: Matthew Jacob <mjacob@feral.com>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: tech-kern
Date: 08/28/2000 18:30:32
On Mon, Aug 28, 2000 at 09:07:18AM -0700, Matthew Jacob wrote:
> In a properly designed system, no SCSI bus reset will be issued and there will
> be no need to wait N seconds settle time.

I tried this but it doesn't work so well: the firmware/bios/... may have
negotiated sync/wide with the targets, but the driver doesn't know this.
So we have to clear the previous negotiation, and a reset is the easiest
way of doing it :) Another way could be to renegotiate strait from the
first command but then you may loose because some device may need quirks and
you don't know it at this time.
Also the reset can help is case of a hard reboot of the system, leaving the
targets with pending commands.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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