From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ted Ts'o <tytso@mit.edu>
Subject: Re: How to disable the transmit FIFO?
Date: Thu, 18 Nov 2010 20:25:23 -0500
Message-ID: <20101119012523.GT3290@thunk.org>
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To: Grant Edwards <grant.b.edwards@gmail.com>, Michael Haardt <michael@moria.de>
Cc: linux-serial@vger.kernel.org

On Thu, Nov 18, 2010 at 08:05:56PM +0000, Grant Edwards wrote:
> On 2010-11-18, Michael Haardt <michael@moria.de> wrote:
> >> > I miss a way to disable the transmit FIFO.
> >>
> >> From userspace or from within a kernel driver?
> >
> > From userspace.
> 
> $ man setserial

Specifically, if you use setserial to configure a serial port so that
its UART is a 16450, it will force the transmit FIFO to be unused.

    	      	     	     	   - Ted