From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755843Ab2IFM4v (ORCPT ); Thu, 6 Sep 2012 08:56:51 -0400 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:46395 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755760Ab2IFM4s convert rfc822-to-8bit (ORCPT ); Thu, 6 Sep 2012 08:56:48 -0400 Date: Thu, 6 Sep 2012 14:01:37 +0100 From: Alan Cox To: khalasa@piap.pl (Krzysztof =?UTF-8?B?SGHFgmFzYQ==?=) Cc: linux-kernel@vger.kernel.org Subject: Re: 3.4.10 N_GSM tty_io WARNING and lockup Message-ID: <20120906140137.75ebe6ba@pyramind.ukuu.org.uk> In-Reply-To: References: X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 05 Sep 2012 12:56:03 +0200 khalasa@piap.pl (Krzysztof Hałasa) wrote: > Hi, > > I'm trying to use GSM tty line discipline. Basically > > echo AT+CMUX=0 > /dev/ttyS0 > > set termios (speed etc.) > int ldisc = N_GSM0710; > ioctl(fd, TIOCSETD, &ldisc); Baffled at this point. If you set some other ldisc instead (eg PPP) can you reproduce it the same way ?