Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753417AbaGGN1m (ORCPT ); Mon, 7 Jul 2014 09:27:42 -0400 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:35851 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753304AbaGGN1k convert rfc822-to-8bit (ORCPT ); Mon, 7 Jul 2014 09:27:40 -0400 Date: Mon, 7 Jul 2014 14:26:34 +0100 From: One Thousand Gnomes To: Robert Nelson Cc: Sebastian Andrzej Siewior , Tony Lindgren , Aaro Koskinen , Felipe Balbi , linux kernel , linux-serial@vger.kernel.org, Linux OMAP Mailing List , Linux ARM Kernel Mailing List Subject: Re: [RFC PATCH] tty: serial: Add 8250-core based omap driver Message-ID: <20140707142634.0f5cb8c3@alan.etchedpixels.co.uk> In-Reply-To: References: <1404316809-20637-1-git-send-email-bigeasy@linutronix.de> <20140702160932.GF5541@saruman.home> <20140702190944.GA567@drone.musicnaut.iki.fi> <20140703073411.GX28884@atomide.com> <53B6DB74.2050401@linutronix.de> Organization: Intel Corporation X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.23; x86_64-pc-linux-gnu) 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 Fri, 4 Jul 2014 11:57:40 -0500 Robert Nelson wrote: > On Fri, Jul 4, 2014 at 11:51 AM, Sebastian Andrzej Siewior > wrote: > > On 07/03/2014 09:34 AM, Tony Lindgren wrote: > >> Heh. Just to summarize the reason ttyO needs to be a separate name > >> and device entry from ttyS is because we also have external 8250 > >> devices on GPMC and hotplug busses. > > > > So the GPMC devices will first get a higher minor/device number. The > > internal serial ports should show up first. I don't see the problem > > (yet). > > > > If you need a separate major number (and name) like we do have it now > > (between ttySx and ttyOx) then one of requirements would be to tell > > Kconfig that one driver can be active at a time. > > > > For me the ttyS vs ttyO thing is purely cosmetic. I personally don't > > like that it is different on different platforms like ttymxc, ttySC, > > ttyTHS, … > > Maybe it's time to migrate them all to one name? (ttyS) Does the end > user really care if they have a soc with an omap/imx serial port > driver? Or do they just want to access /dev/ttySx and connect to their > device? Userspace question. Actual userspace visible device naming policy belongs to udev. Alan -- 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/