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Date: Sun, 30 Jul 1995 06:52:58 -0700
From: Bruce Evans <bde>
Message-Id: <199507301352.GAA08918@freefall.cdrom.com>
To: CVS-commiters, cvs-sys
Subject: cvs commit: src/sys/kern tty.c
Sender: commit-owner@FreeBSD.org
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bde         95/07/30 06:52:57

  Modified:    sys/kern  tty.c
  Log:
  Don't swap the queue headers to implement concatenation of the
  queues for TIOCSETA[W].  Swapping an even number of times broke
  the queue resource limits.  This would have broken CRTSCTS flow
  control if the clist slush list was used up.
  
  Don'concatenate the queues for TIOCSETA[W] if one of the queues
  has a resource limit of 0.  Concatenation would cause a panic if
  one of the queues is nonempty and the other is limited to length
  0.  This may have caused panics in PPPDISC.
  
  Wake up readers after all transitions of ICANON.  When ICANON is
  turned off it is quite likely that characters will become available
  to be read.
  
  Reduce indentation near these changes.