From mboxrd@z Thu Jan  1 00:00:00 1970
From: anton.vorontsov@linaro.org (Anton Vorontsov)
Date: Mon, 10 Sep 2012 10:54:37 -0700
Subject: [PATCH 10/14] tty/serial: Add kgdb_nmi driver
In-Reply-To: <20120910121105.724f982f@pyramind.ukuu.org.uk>
References: <20120910040802.GA1261@lizard> <20120910041412.GJ29537@lizard>
 <20120910121105.724f982f@pyramind.ukuu.org.uk>
Message-ID: <20120910175437.GA16781@lizard>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Mon, Sep 10, 2012 at 12:11:05PM +0100, Alan Cox wrote:
> On Sun, 9 Sep 2012 21:14:12 -0700
> Anton Vorontsov <anton.vorontsov@linaro.org> wrote:
> 
> > This special driver makes it possible to temporary use NMI debugger port
> > as a normal console by issuing 'nmi_console' command (assuming that the
> > port is attached to KGDB).
> 
> No ref counting, no tty port, no compliance with the tty behaviour.
> Concept looks fine but it needs porting to reflect a kernel newer than
> about 2.6.18 8)

:-)

I'll look into tty_port helpers, much thanks for the review!

> I would take a quick look at the tty_port helpers and also check v -next
> which makes the tty_port mandatory. That'll pretty much cover your needs
> for locking, semantics and the like.