linux-kernel - Re: [RFC] tty: Always allow tcflow(TCOON) to unwedge terminal

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Message-ID: <20140911111930.7227abbf@alan.etchedpixels.co.uk>
Date:	Thu, 11 Sep 2014 11:19:30 +0100
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] tty: Always allow tcflow(TCOON) to unwedge terminal

> It's not common knowledge (and its certainly counterintuitive) that
> turning off output when output is already turned off (ie., tcflow(TCOOFF))
> is the required trickery to unwedge a terminal.
> 
> Unwedging directly seems the straightforward approach.

Putting the off/on in the man page might be safer still ?
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