Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers

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On Thu, 2008-01-03 at 20:05 +0100, Geert Uytterhoeven wrote:
> On Thu, 3 Jan 2008, James Bottomley wrote:
> > On Thu, 2008-01-03 at 17:40 +0200, Boaz Harrosh wrote:
> > > As recommended by Christoph Hellwig. There is no use
> > >  of Fixing these drivers, since there is a much simpler
> > >  and modern esp infrastructure with David Miller's esp_scsi
> > > 
> > >   - Remove all driver files dependent on NCR53C9x.c
> > >         deleted:    drivers/scsi/NCR53C9x.c
> > >         deleted:    drivers/scsi/NCR53C9x.h
> > >         deleted:    drivers/scsi/blz1230.c
> > >         deleted:    drivers/scsi/blz2060.c
> > >         deleted:    drivers/scsi/cyberstorm.c
> > >         deleted:    drivers/scsi/cyberstormII.c
> > >         deleted:    drivers/scsi/dec_esp.c
> > >         deleted:    drivers/scsi/fastlane.c
> > >         deleted:    drivers/scsi/mac_esp.c
> > >         deleted:    drivers/scsi/mca_53c9x.c
> > >         deleted:    drivers/scsi/oktagon_esp.c
> > >         deleted:    drivers/scsi/oktagon_io.S
> > >         deleted:    drivers/scsi/sun3x_esp.c
> > > 
> > >   - Remove above list from drivers/scsi/Kconfig &&
> > > drivers/scsi/Makefile
> > 
> > OK, I'll split this into four pieces for scsi-pending, since there are
> > three separate interest groups with signoffs to collect (MCA, m68k and
> > alpha) plus the core removal.
> 
> Anybody who can look into converting the m68k NCR53C9x drivers and has
> hardware to test (some of) them? I don't think we can afford losing one
> third of our SCSI drivers...
> 
> You can use the following as guidance:
> 
> commit 5ff263667798946abc15314eae3f341345877d7a
> Author: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> Date:   Tue May 22 17:03:44 2007 -0700
> 
>     [SCSI] jazz_esp: Converted to use esp_core.
>         
> 	    Use new esp_scsi for JAZZ SCSI host adapter driver

I can also offer help to anyone who tries this.  It's also a good
opportunity to let die drivers that have no committed users.

Just to be clear on why we're doing this:  the NCR53C9x driver on which
these are all based is in a pretty horrendous state of repair.  The
esp_scsi one is much nicer, actually nicely tested and has a host of
features the old driver didn't.  However, the principle driving force is
the conversion of the SCSI subsystem to the sg_list accessors.  esp_scsi
is already coverted.  NCR53C9x looks like a nasty job.  Thus, the moment
the conversion patch goes in, all your drivers will break.  However,
since breakage excites a whole bunch of kernel compile checkers (and
lands me with a flood of email), I'm prepared to remove them to prevent
this from happening ... unless we can get them converted over to
esp_scsi.

I'll put the removal in the scsi-pending tree, so it won't be picked up
by -mm, but we need to get this situation resolved by 2.6.25 at the
latest.

James


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