linux-kernel - Re: 3.4.10 N_GSM tty

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Message-ID: <20120907142931.22c4ec5b@pyramind.ukuu.org.uk>
Date:	Fri, 7 Sep 2012 14:29:31 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Krzysztof Halasa <khc@...waw.pl>
Cc:	khalasa@...p.pl (Krzysztof Hałasa),
	linux-kernel@...r.kernel.org
Subject: Re: 3.4.10 N_GSM tty_io WARNING and lockup

On Fri, 07 Sep 2012 14:59:26 +0200
Krzysztof Halasa <khc@...waw.pl> wrote:

> > In the meantime I've rebased to v3.5.3 and it started to work. Do you
> > think it is worth it investigating v3.4.10 at this point?
> 
> BTW I'm not sure if it's a known bug: I closed the /dev/ttyS0 with
> /dev/gsmmuxX still open, and then tried to set N_TTY ldisc on the
> master device. It didn't work so well :-(

That should be fixed in 3.7. It's unfixable until the lock splitting work
is merged.
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