From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christer Weinigel <christer@weinigel.se>
Subject: Re: tcdrain / TCSBRK / wait_until_sent delay
Date: 09 May 2005 11:22:08 +0200
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References: <200505051650.38471.andyparkins@gmail.com>
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To: Christer Weinigel <christer@weinigel.se>
Cc: Andy Parkins <andyparkins@gmail.com>, linux-serial@vger.kernel.org

Christer Weinigel <christer@weinigel.se> writes:

>     do {
>         ioctl(fd, TIOCSERGETLSR, &lsr);
>     } while (lsr & TIOCSER_TEMT);

Should be !(lsr & TIOCSER_TEMT), since the bit set means that the
transmitter is empty.

Note to self.  _Always_ check posted code one extra time.  :-/

  /Christer
 
-- 
"Just how much can I get away with and still go to heaven?"

Freelance consultant specializing in device driver programming for Linux 
Christer Weinigel <christer@weinigel.se>  http://www.weinigel.se