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, 7 Mar 2001 14:21:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 7 Mar 2001 14:21:18 -0500 Received: from kerberos.suse.cz ([195.47.106.10]:10769 "EHLO kerberos.suse.cz") by vger.kernel.org with ESMTP id ; Wed, 7 Mar 2001 14:21:13 -0500 Date: Wed, 7 Mar 2001 20:20:16 +0100 From: Vojtech Pavlik To: Paul Bristow Cc: Konrad Stopsack , Linux-Kernel Subject: Re: IDE bug in 2.4.2-ac12? Message-ID: <20010307202016.B5030@suse.cz> In-Reply-To: <01030620134000.00343@Stopsack> <01030621324600.01403@zoltar.paulbristow.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <01030621324600.01403@zoltar.paulbristow.lan>; from paul@paulbristow.net on Tue, Mar 06, 2001 at 09:32:46PM +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 06, 2001 at 09:32:46PM +0000, Paul Bristow wrote: > On Tuesday 06 March 2001 19:13, Konrad Stopsack wrote: > > Hello guys, > > > > I hope you've read my posting "DMA problem with ZIP drive and VIA > > VT82C598MVP / VT82C586B chip" (why does anybody answer?). > > I now tried the 2.4.2-ac12 kernel including the latest VIA 82c586b driver > > (version 3.21), but the effects were almost the same: > > - just when the kernel tried to access to the hard disk during boot, DMA > > errors were occured > > - "hdparm /dev/hda" displayed 9 MB per second (and not 11 MB like without > > ZIP) - /proc/ide/via reported 16 MB transfer rate (and not 33MB like > > without ZIP drive) > > - Kernel 2.4.2-ac12 reports a "ide-floppy: hdd: I/O error, pc = 5a, key = > > 5, asc = 24, ascq = 0" error, 2.4.2 doesn't > > > > My IDE configuration is: > > /dev/hda: Hard disk => Primary IDE controller > > /dev/hdc CD-ROM => Secondary IDE controller > > /dev/hdd: ZIP => Secondary IDE controller > > > > Could you please tell me whether it's a bug or a feature? > > OK. The ZIP drive can not handle uDMA, so it's normal for the secondary > controller to drop back. In my opinion, the primary controller should stay > at uDMA speed, but it is PC hardware so it is perfectly possible there is > something cheap that locks them together. I will bring up ac-12 and check > the error message... Actually I'm beginning to suspect the PSU here ... does removing the CD-ROM (leaving just the HDD and the ZIP in) help? Does the ZIP cause errors even when connected just to the power cable (and not the IDE cable)? -- Vojtech Pavlik SuSE Labs