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Date: Fri, 7 Sep 2012 14:29:31 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Krzysztof Halasa <khc@pm.waw.pl>
Cc: khalasa@piap.pl (Krzysztof =?UTF-8?B?SGHFgmFzYQ==?=),
        linux-kernel@vger.kernel.org
Subject: Re: 3.4.10 N_GSM tty_io WARNING and lockup
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On Fri, 07 Sep 2012 14:59:26 +0200
Krzysztof Halasa <khc@pm.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.