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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