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Date: Mon, 30 Sep 1996 05:22:37 -0700 (PDT)
From: Bruce Evans <bde>
Message-Id: <199609301222.FAA03697@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-sys
Subject: cvs commit:  src/sys/i386/isa sio.c
Sender: owner-cvs-sys@freebsd.org
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bde         96/09/30 05:22:34

  Modified:    sys/i386/isa  sio.c
  Log:
  Work around UMC8669F and Startech UART bugs by not writing to the
  divisor latch registers if the registers wouldn't change.
  
  Use the default console cfcr setting while setting the divisor
  latch registers for console i/o.  Input may be messed up by
  transiently changing the cfcr.
  
  Use a usual cfcr setting while setting the divisor latch registers
  in the probe.  This shouldn't matter, but this is not the place to
  test the UART's handling of 5 bit words.
  
  Removed a stale devfs comment.
  
  Revision  Changes    Path
  1.147     +36 -11    src/sys/i386/isa/sio.c