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    block: delete super ancient PC-XT driver for 1980's hardware · d1a6f4f1
    Paul Gortmaker 提交于
    This driver was for the 8 bit ISA cards that were installed in
    the PC-XT machines of 1980 vintage.  They supported the dual
    ribbon cable MFM drives of 10-20MB capacity, and ran at a 3:1
    interleave, giving performance on the order of 128kB/s.
    
    By the introduction of the PC-AT (286) these controllers were
    already scrapped in favour of 16 bit controllers with some onboard
    RAM that could support a 1:1 interleave.
    
    The git history doesn't show any evidence of runtime fixes that
    would reflect active usage; instead just the usual tree-wide API
    type changes/cleanups.  Going back to in-source changelogs, the
    last "runtime" fix that is evident is something I did over a
    dozen years ago[1] -- and even back then, the hardware was long
    since unavailable, so that ancient fix was also not runtime tested.
    
    The time is long overdue for this to get flushed, so lets get
    rid of it before anyone wastes more time doing builds and sparse
    checks etc. on long since dead code.
    
    [1] http://lkml.indiana.edu/hypermail/linux/kernel/0102.2/0027.htmlSigned-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
    d1a6f4f1
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