From mboxrd@z Thu Jan 1 00:00:00 1970 From: Parag Warudkar Subject: Re: IDE CDROM - No DMA Date: Sun, 12 Mar 2006 12:09:33 -0500 Message-ID: <200603121209.33218.kernel-stuff@comcast.net> References: <200603101842.09251.kernel-stuff@comcast.net> <200603120128.44469.kernel-stuff@comcast.net> <441443F5.1060603@bootc.net> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <441443F5.1060603@bootc.net> Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: Chris Boot Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Alan Cox List-Id: linux-ide@vger.kernel.org On Sunday 12 March 2006 10:53, Chris Boot wrote: > > You're using the generic ATA driver, not the one specific for your chipset, > thus it's unlikely you'll get DMA on it at all. Judging by the fact you're > using ata_piix for your SATA hard disk, try using the piix ATA driver for > your on-board IDE. I assume you built your own kernel and forgot to enable > this driver. > Some one pointed out offline - https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163418 Looks like it's a SATA combined mode problem as outlined in the above bug report. NONE of the options provided in the bug report worked for me though - :( Parag