Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759546AbXIUNhU (ORCPT ); Fri, 21 Sep 2007 09:37:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752243AbXIUNhH (ORCPT ); Fri, 21 Sep 2007 09:37:07 -0400 Received: from cerber.ds.pg.gda.pl ([153.19.208.18]:49264 "EHLO cerber.ds.pg.gda.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750981AbXIUNhG (ORCPT ); Fri, 21 Sep 2007 09:37:06 -0400 Date: Fri, 21 Sep 2007 14:36:50 +0100 (BST) From: "Maciej W. Rozycki" To: Andrew Morton cc: Gerd Hoffmann , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Yinghai.Lu@Sun.COM, bryan.wu@analog.com, dilinger@queued.net, kraxel@redhat.com, Gerd Hoffmann , lethal@linux-sh.org, rgetz@blackfin.uclinux.org, vapier.adi@gmail.com, Russell King Subject: Re: [PATCH] kernel/printk.c: Concerns about the console handover In-Reply-To: <20070921010349.2caee558.akpm@linux-foundation.org> Message-ID: References: <20070921010349.2caee558.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1136 Lines: 25 On Fri, 21 Sep 2007, Andrew Morton wrote: > It would be useful to have some basic information like: Which kernel > version was this found in? Which kernel version last worked? The kernel used was a 2.6.23-rc5 snapshot from Sep 4th, 2007 taken from the linux-mips.org tree (as stated by the revision of the patch provided). There is no version that can be considered working as the change to add the printk() to register_console() went in before drivers/serial/zs.c was added and the old drivers/tc/zs.c driver might have been to sloppy to handle such bits as the transmitter enable properly. I may investigate. Chances are nobody tried any version of the kernel from the period between the printk() was added and drivers/tc/zs.c removed with the DECstation; I have not. Anyway, I did confirm keeping the transmitter enabled all the time makes the problem go away. Maciej - 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/