From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: Problem: DMA on PIIX4 controller for LiteON 851S DVDRW Drive Date: Mon, 14 Jun 2004 17:21:42 +0200 Sender: linux-ide-owner@vger.kernel.org Message-ID: <20040614152141.GD8694@suse.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ns.virtualhost.dk ([195.184.98.160]:11447 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S261369AbUFNPVu (ORCPT ); Mon, 14 Jun 2004 11:21:50 -0400 Content-Disposition: inline In-Reply-To: List-Id: linux-ide@vger.kernel.org To: qdot@SAFe-mail.net Cc: linux-ide@vger.kernel.org On Mon, Jun 14 2004, qdot@SAFe-mail.net wrote: > Hi > > Sorry to bother you with such a question but I got into some sort of trouble with DMA settings on PIIX4 controller for LiteON 851S DVDRW Drive on Linux 2.6.6 (vanilla). > > When dma has been setup (either using bios, boot parameters or hdparm) on first access to drive system ends up with: > > Jun 14 11:50:10 valkyrie hdc: cdrom_decode_status: status=0x51 { DriveReady SeekCom > plete Error } > Jun 14 11:50:10 valkyrie hdc: cdrom_decode_status: error=0x40LastFailedSense 0x04 Looks like a hardware error (the sense indicates so), it might just not like dma. -- Jens Axboe