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Date: Wed, 1 Nov 1995 16:55:00 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199511010555.QAA17404@godzilla.zeta.org.au>
To: davidg@Root.COM, peter@jhome.dialix.com
Subject: Re: cvs commit: src/sys/kern tty_subr.c
Cc: CVS-commiters@freefall.freebsd.org, cvs-sys@freefall.freebsd.org
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>I used to have this problem occasionally with the specialix driver, and in
>the end the interrupt routine had to do a lot of tests to attempt to
>intuit whether or not he cblocks were currently reserved or not.  The

That's why I don't like silently ignoring the problem.  Reporting it
nastily should have been good for getting drivers fixed.  si.c was
relying on TS_CONNECTED but TS_CONNECTED isn't set quite right for it.
TS_CONNECTED shouldn't be set in ttymodem() unless TS_ISOPEN is set.
If you fix this, then change the recent fix to ttyopen() to set
TS_CONNECTED if carrier is on as well as if CLOCAL is set.

Bruce