From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 18 Apr 2001 02:48:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 18 Apr 2001 02:48:08 -0400 Received: from olsinka.site.cas.cz ([147.231.11.16]:1921 "EHLO twilight.suse.cz") by vger.kernel.org with ESMTP id ; Wed, 18 Apr 2001 02:47:57 -0400 Date: Wed, 18 Apr 2001 08:46:52 +0200 From: Vojtech Pavlik To: monkeyiq@dingoblue.net.au Cc: linux-kernel@vger.kernel.org Subject: Re: idebus=xx on a ISA only 486 Message-ID: <20010418084652.A369@suse.cz> In-Reply-To: <3ADAE8A4.87DFBF92@dingoblue.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3ADAE8A4.87DFBF92@dingoblue.net.au>; from monkeyiq@dingoblue.net.au on Mon, Apr 16, 2001 at 10:42:12PM +1000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 16, 2001 at 10:42:12PM +1000, monkeyiq@dingoblue.net.au wrote: > Hi, > This may be harmless but I noticed a warning msg when I went to > 2.4.3 on a ISA only 486 mobo. > > Feb 18 18:01:41 speedy kernel: ide: Assuming 50MHz system bus speed for > PIO modes; override with idebus=xx > > My first thought was to drop idebus to 8Mhz (I think this is the > ISA speed ?), > but using that > Feb 18 18:01:41 speedy kernel: Kernel command line: auto BOOT_IMAGE=243 > ro root=301 BOOT_FILE=/boot/vmlinuz-2.4.3 idebus=8 > Feb 18 18:01:41 speedy kernel: ide_setup: idebus=8 -- BAD BUS SPEED! > Expected value from 20 to 66 > > and then a quick grep/poke in the src gave this > > ./drivers/ide/ide.c > Version 5.50 allow values as small as 20 for idebus= > > and at line 350 it seems that its pci or nothing for the bus speed. > > the only deterministic problem (so far that I can directly attribute to > that kernel) with the > 2.4.3 booted kernel is that ssh2 locks up for random amounts of time at > randomish intervals. > > I can't seem to dig up other info on this problem, I am sorry if this is > the wrong place > to ask. If there are better places to be looking for this data I am > happy to RTFM there. > > Now trying 2.4.3-ac6 to see what happens there. idebus= isn't used in case there is no VL-BUS or PCI bus in your system. -- Vojtech Pavlik SuSE Labs