Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261316AbVEXDZP (ORCPT ); Mon, 23 May 2005 23:25:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261349AbVEXDZO (ORCPT ); Mon, 23 May 2005 23:25:14 -0400 Received: from gate.crashing.org ([63.228.1.57]:63437 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S261316AbVEXDZF (ORCPT ); Mon, 23 May 2005 23:25:05 -0400 Subject: Re: ide-cd vs. DMA From: Benjamin Herrenschmidt To: karim@opersys.com Cc: Jens Axboe , Linux Kernel list In-Reply-To: <42929F2F.8000101@opersys.com> References: <1116891772.30513.6.camel@gaston> <42929F2F.8000101@opersys.com> Content-Type: text/plain Date: Tue, 24 May 2005 13:24:50 +1000 Message-Id: <1116905090.4992.7.camel@gaston> Mime-Version: 1.0 X-Mailer: Evolution 2.2.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1022 Lines: 25 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. Ben. - 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/