Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755447AbZKZPNo (ORCPT ); Thu, 26 Nov 2009 10:13:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755122AbZKZPNn (ORCPT ); Thu, 26 Nov 2009 10:13:43 -0500 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:49193 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754986AbZKZPNm (ORCPT ); Thu, 26 Nov 2009 10:13:42 -0500 Date: Thu, 26 Nov 2009 15:15:46 +0000 From: Alan Cox To: Bartlomiej Zolnierkiewicz Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 16/86] pata_efar: MWDMA0 is unsupported Message-ID: <20091126151546.6c891014@lxorguk.ukuu.org.uk> In-Reply-To: <200911261553.58941.bzolnier@gmail.com> References: <20091125170218.5446.13513.sendpatchset@localhost> <20091125170415.5446.15073.sendpatchset@localhost> <20091125172552.6817e3da@lxorguk.ukuu.org.uk> <200911261553.58941.bzolnier@gmail.com> X-Mailer: Claws Mail 3.7.3 (GTK+ 2.14.7; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1218 Lines: 28 On Thu, 26 Nov 2009 15:53:58 +0100 Bartlomiej Zolnierkiewicz wrote: > On Wednesday 25 November 2009 06:25:52 pm Alan Cox wrote: > > On Wed, 25 Nov 2009 18:04:15 +0100 > > Bartlomiej Zolnierkiewicz wrote: > > > > > From: Bartlomiej Zolnierkiewicz > > > Subject: [PATCH] pata_efar: MWDMA0 is unsupported > > > > > > MWDMA0 timings cannot be met with the PIIX based controller > > > programming interface. > > > > The efar documentation makes no reference to not being capable of MWDMA0, > > so where does this come from ? No MWDMA0 is an Intel erratum it appears. > > No MWDMA0 support is a common issue on all 'PIIX-like' controllers. > > In case of this chipset while the (preliminary) documentation claims MWDMA0 > support on the 'FEATURES' page the later 'programming guide' part describes > only PIO0-4, SWDMA2, MWDMA1-2 and UDMA0-4 transfer modes as supported. Cool - I only have the original docs. -- 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/