From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcel Holtmann Subject: Re: [PATCH] USB host CDC Phonet network interface driver Date: Wed, 22 Jul 2009 11:15:34 +0200 Message-ID: <1248254134.28545.111.camel@violet> References: <1248177515-12712-1-git-send-email-remi.denis-courmont@nokia.com> <1248184373.6558.15.camel@localhost.localdomain> <200907221137.07005.remi.denis-courmont@nokia.com> <200907221041.51995.oliver@neukum.org> <20090722101102.4aba96bd@lxorguk.ukuu.org.uk> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Oliver Neukum , =?ISO-8859-1?Q?R=E9mi?= Denis-Courmont , ext Dan Williams , "netdev@vger.kernel.org" , "linux-usb@vger.kernel.org" To: Alan Cox Return-path: Received: from senator.holtmann.net ([87.106.208.187]:37491 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750868AbZGVJQO (ORCPT ); Wed, 22 Jul 2009 05:16:14 -0400 In-Reply-To: <20090722101102.4aba96bd@lxorguk.ukuu.org.uk> Sender: netdev-owner@vger.kernel.org List-ID: Hi Alan, > > The AT stuff is really problematic. Look at the hoops ISDN and software > > modem drivers go through to emulate AT commands. I know even of a CDC-ACM > > modem which can't deal with AT commands inline (that's within spec). > > It seems to me we should have a modem API in kernel. > > For devices which don't deal in AT commands probably but for devices > whose firmware provides an AT command interface over serial I would > disagree. I fully agree here. Even if you think you get AT commands under control, you really won't in the end. That standard is so wildly mis-interpreted that it is not even funny anymore. Regards Marcel