linux-kernel - Re: TTY: tty

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Message-ID: <20120312105312.665d2362@pyramind.ukuu.org.uk>
Date:	Mon, 12 Mar 2012 10:53:12 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Richard Weinberger <richard@....at>
Cc:	Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org, Jiri Slaby <jirislaby@...il.com>
Subject: Re: TTY: tty_port questions

> Another question, what is the purpose of tty_port->console?
> It seems to have no user.

So the tty_port layer can in future know about whether it is a console
without a tty necessarily being present or referenceable.

> Is tty_port really the right thing for a console driver like in the UML 
> case?

It will be. In order to fix the tty locking mess we need to shove a lot
of stuff whose lifetime is the lifetime of the physical port somewhere
else - the tty_port is that structure.

Alan
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