From owner-cvs-all  Wed Jun 20  9:47:30 2001
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From: Ian Dowse <iedowse@FreeBSD.org>
Date: Wed, 20 Jun 2001 09:47:24 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/isa sio.c
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iedowse     2001/06/20 09:47:24 PDT

  Modified files:
    sys/isa              sio.c 
  Log:
  The serial console break-to-debugger support only functioned while
  the console device was open. At other times, the interrupts that
  are used to detect the break signal or ~^B sequence were disabled,
  so these events would not be noticed until the next open (e.g. the
  next kernel printf). This was mainly a problem while there was no
  getty running on the console, such as during bootup or shutdown.
  
  For serial consoles with break-to-debugger support, we now enable
  the generation of interrupts at attach time, and we leave them
  enabled while the device is closed.
  
  Reviewed by:	bde (I've since made chages as per his suggestions)
  
  Revision  Changes    Path
  1.336     +22 -2     src/sys/isa/sio.c


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