Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262229AbVEYBcA (ORCPT ); Tue, 24 May 2005 21:32:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262230AbVEYBb7 (ORCPT ); Tue, 24 May 2005 21:31:59 -0400 Received: from dsl017-059-236.wdc2.dsl.speakeasy.net ([69.17.59.236]:17599 "EHLO marta.kurtwerks.com") by vger.kernel.org with ESMTP id S262229AbVEYBb5 (ORCPT ); Tue, 24 May 2005 21:31:57 -0400 From: Kurt Wall To: Linux Kernel list Subject: Re: ide-cd vs. DMA Date: Tue, 24 May 2005 21:31:46 -0400 User-Agent: KMail/1.8 References: <1116891772.30513.6.camel@gaston> <42929F2F.8000101@opersys.com> <1116905090.4992.7.camel@gaston> In-Reply-To: <1116905090.4992.7.camel@gaston> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200505242131.46827.kwall@kurtwerks.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1645 Lines: 38 On Monday 23 May 2005 23:24, Benjamin Herrenschmidt enlightened us thusly: > On Mon, 2005-05-23 at 23:27 -0400, Karim Yaghmour wrote: > > Benjamin Herrenschmidt wrote: > > > hdb: command error: status=0x51 { DriveReady SeekComplete Error } > > > hdb: command error: error=0x54 { AbortedCommand > > > LastFailedSense=0x05 } ide: failed opcode was: unknown > > > end_request: I/O error, dev hdb, sector 42872 > > > > Got plenty of these an old Dell Optiplex GX1 (PIII-450) with > > vanilla FC3. ... you've got to wonder when the kernel says there > > are bad sectors on a CD (?) and then they disappear with: > > hdparm -d0 /dev/hdc > > Well, not sure what's wrong here, but ATAPI errors shouldn't normally > result in stopping DMA. We may want to just blacklist your drive > rather than having this stupid fallback. In this case, I suspect it's > CSS/region issue with a DVD. I see the same thing here on a plain vanilla CD-ROM (pardon the unsightly wrapping): May 23 21:52:34 luther kernel: hdc: packet command error: status=0x51 { DriveReady SeekComplete Error } May 23 21:52:34 luther kernel: hdc: packet command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } May 23 23:12:37 luther kernel: hdc: packet command error: status=0x51 { DriveReady SeekComplete Error } May 23 23:12:37 luther kernel: hdc: packet command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } Kurt - 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/