Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755602Ab0DSQ0g (ORCPT ); Mon, 19 Apr 2010 12:26:36 -0400 Received: from kroah.org ([198.145.64.141]:43114 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755180Ab0DSQ0a (ORCPT ); Mon, 19 Apr 2010 12:26:30 -0400 Date: Mon, 19 Apr 2010 09:17:05 -0700 From: Greg KH To: Stefan Assmann , digidietze@draisberghof.de, Linux Kernel Mailing List , linux-usb@vger.kernel.org Subject: Re: [PATCH] USB: expose Huawei E1550 3G modem Message-ID: <20100419161705.GA28020@kroah.com> References: <4BCC5071.4010509@redhat.com> <4BCC6206.4030003@draisberghof.de> <4BCC63EB.4010204@redhat.com> <20100419141907.GN26130@one-eyed-alien.net> <4BCC6FAF.2030809@redhat.com> <20100419161406.GO26130@one-eyed-alien.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100419161406.GO26130@one-eyed-alien.net> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1648 Lines: 39 On Mon, Apr 19, 2010 at 09:14:06AM -0700, Matthew Dharm wrote: > On Mon, Apr 19, 2010 at 04:58:55PM +0200, Stefan Assmann wrote: > > On 19.04.2010 16:19, Matthew Dharm wrote: > > > > > > 2) It is much much easier to update a userspace tool than the kernel. > > > Thus, new devices can be supported without a kernel update by end-users. > > > > Of course. Nobody is talking about removing existing code from any > > user-space application. Under the condition that no functionality gets > > lost, wouldn't it be convenient to have the modem exposed by the kernel? > > If the kernel support doesn't suffice you can still run an updated > > usb_modeswitch until kernel support is there. > > > > This also has the benefit that it would work for people that don't > > have usb_modeswitch installed. Matt, are you still thinking that is the > > wrong way of doing it? > > I still believe that, for an end-user, upgrading a userspace tool is much > much easier than upgrading a kernel. > > Also, the actual "driver" for the device (i.e. the modem part) doesn't need > an upgrade to the kernel component for these types of devices. > > Finally, these sorts of databases don't belong in the kernel as much as > possible. > > The usb-storage driver will not accept patches for device which can be > supported via userspace-only tools. And just to confirm, I support Matthew's position. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/