Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S271049AbTGPLVE (ORCPT ); Wed, 16 Jul 2003 07:21:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271050AbTGPLVE (ORCPT ); Wed, 16 Jul 2003 07:21:04 -0400 Received: from jurassic.park.msu.ru ([195.208.223.243]:11787 "EHLO jurassic.park.msu.ru") by vger.kernel.org with ESMTP id S271049AbTGPLUW (ORCPT ); Wed, 16 Jul 2003 07:20:22 -0400 Date: Wed, 16 Jul 2003 15:34:38 +0400 From: Ivan Kokshaysky To: Art Haas Cc: Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org Subject: Re: Trying to get DMA working with IDE alim15x3 controller Message-ID: <20030716153438.A9688@jurassic.park.msu.ru> References: <20030715233202.GB17444@artsapartment.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20030715233202.GB17444@artsapartment.org>; from ahaas@airmail.net on Tue, Jul 15, 2003 at 06:32:02PM -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1212 Lines: 30 On Tue, Jul 15, 2003 at 06:32:02PM -0500, Art Haas wrote: > I've been using the 2.5 series for a long time now, but I have vague > memories of not needing to use 'ide=nodma' before this patch was added: > > ===== setup-pci.c 1.5 vs 1.6 ===== > --- 1.5/drivers/ide/setup-pci.c Sat Sep 21 07:59:59 2002 > +++ 1.6/drivers/ide/setup-pci.c Tue Sep 24 09:24:57 2002 > @@ -250,6 +250,7 @@ > > switch(dev->device) { > case PCI_DEVICE_ID_AL_M5219: > + case PCI_DEVICE_ID_AL_M5229: > case PCI_DEVICE_ID_AMD_VIPER_7409: > case PCI_DEVICE_ID_CMD_643: > case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE: Hmm, interesting. This line has been added at early stage of IDE rewrite to work around some unrelated bug, IIRC. I strongly suspect that it's not needed anymore (will verify it later today), and it also might explain weird DMA breakage with older ALi chips. BTW, have you tried recent 2.4 kernels? Looks like this line should be removed in 2.4 as well. Ivan. - 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/