Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752890AbaLENx1 (ORCPT ); Fri, 5 Dec 2014 08:53:27 -0500 Received: from 251.110.2.81.in-addr.arpa ([81.2.110.251]:59522 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750933AbaLENxZ (ORCPT ); Fri, 5 Dec 2014 08:53:25 -0500 Date: Fri, 5 Dec 2014 13:51:33 +0000 From: One Thousand Gnomes To: Felipe Balbi Cc: Aaro Koskinen , Tony Lindgren , Sebastian Andrzej Siewior , , Greg Kroah-Hartman , , , , Sekhar Nori , Subject: Re: [PATCH] tty: serial: serial-omap: depend on !8250_omap Message-ID: <20141205135133.37fb96f6@lxorguk.ukuu.org.uk> In-Reply-To: <20141202015118.GA1891@saruman> References: <1417039306-2384-1-git-send-email-bigeasy@linutronix.de> <20141129094823.GA10840@linutronix.de> <20141129173418.GY2817@atomide.com> <20141201140914.728aaa46@lxorguk.ukuu.org.uk> <20141201231338.GA14524@fuloong-minipc.musicnaut.iki.fi> <20141202015118.GA1891@saruman> Organization: Intel Corporation X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.24; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 1 Dec 2014 19:51:18 -0600 Felipe Balbi wrote: > On Tue, Dec 02, 2014 at 01:13:38AM +0200, Aaro Koskinen wrote: > > Hi, > > > > On Mon, Dec 01, 2014 at 02:09:14PM +0000, One Thousand Gnomes wrote: > > > > Well the nightmare userspace switch from ttyS to ttyO few years ago is > > > > something we want to avoid.. I think the best solution would be to make > > > > serial-omap.c transparently provide support for ttyO using the new 8250 > > > > code so both ttyS and ttyO devices would just work. Otherwise it will > > > > be years of "my serial port stopped working" questions again. > > > > > > Thata a udev problem not a kernel one surely. > > > > People also use serial console to observe the early kernel boot before > > the userspace is started. > > right, we need a way to tell the kernel that ttyO%d and ttyS%d are the > exact same device so that console=ttyO0 and console=ttyS0 mean the same > thing. That maintains backwards compatibility and lets people move on Yes.. and that possibly also means a temporary char driver that claims ttyO* and simply redirects the calls into the tty. -- 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/