Re: [PATCH] scsi_transport_spi: fix domain validation failure from incorrect width setting

[James Bottomley <James.Bottomley@SteelEye.com>]

On Mon, 2007-09-24 at 14:10 +0200, Stefan Boresch wrote:
> Dear James!
> 
> Sorry for replying so late!
> 
> On Sat, Sep 22, 2007 at 08:40:09AM -0500, James Bottomley wrote:
> > The previous patch was a bit non-standard because it actually adjusted
> > the user setting max_width.  This would mean that if the user replaced
> > the cable and then re-ran domain validation, it still wouldn't try wide
> > transfers, which is wrong.
> > 
> > The attached patch fixes the problem by physically nailing the wide
> > setting to what it deduces it should be for the whole of Domain
> > Validation.
> > 
> > James
> > 
> > diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
> [snip]
> 
> A self-compiled kernel based on the Ubuntu "gutsy" kernel sources
> (linux-source-2.6.22_2.6.22-12.36_all.deb, for whatever that is worth) boots
> successfully, after applying your patch (which applied cleanly)
> 
> Thanks so much for your help,

You're very welcome.

> Stefan Boresch
> 
> PS: BTW, your original post (diagnosis of hardware issues) has also
> convinced my vendor to do some work to honor his warranty. So, my next
> job is to dig into the big box which just arrived by fed-ex containing
> all possible replacements (including a new motherboard ..). Maybe,
> I'll eventually get U320 running on this machine ;-)

OK ... I'd replace the cable first ... and check for bent pins in the
connector.  What Domain Validation is saying is that there's something
wrong with the upper 8 bits of the wide bus.  Those are the last few
wires on the 68 wire ribbon cable (wire one is usually marked in a
different colour).

James