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Date: Mon, 5 Jun 1995 12:32:56 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199506050232.MAA12166@godzilla.zeta.org.au>
To: CVS-commiters@freefall.cdrom.com, cvs-sys@freefall.cdrom.com,
        davidg@freefall.cdrom.com
Subject: Re: cvs commit: src/sys/kern tty.c
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>  Modified:    sys/kern  tty.c
>  Log:
>  Restore Andrew's change in rev 1.44 for t_timeout. I can't see how that
>  could have caused PR 445 unless the user specifically mis-configured
>  'comcontrol' in rc.serial. t_timeout is only set/cleared via the
>  TIOCSDRAINWAIT ioctl and defaults to 0.
>  
>  Reviewed by:	Andrew Chernov

I haven't reviewed Andrey's comments yet :-(.

Of course the user must have mis-configured dtrwait.  It isn't
documented anywhere that using dtrwait may break the non-blocking
behaviour of writes to ttys.

Bruce