Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932185Ab0BYDpt (ORCPT ); Wed, 24 Feb 2010 22:45:49 -0500 Received: from mail-yw0-f197.google.com ([209.85.211.197]:58888 "EHLO mail-yw0-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932112Ab0BYDpq (ORCPT ); Wed, 24 Feb 2010 22:45:46 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=ppYz85qZDMEc88ZDE8MIcn62J7YyFWrc1ZtuAWeOnHdP1SDTiFnzllXFLC2n1Rlasu TVHXDR0akYzgAlQZ5oWsk7F6Uk71hVrEMY0RRRbowOehtuNmzuu+a1NtizV5UGOrH0B0 +XRf1gsGhh00gokVCqWchd/aZxBfgf2WqTYds= Message-ID: <4B85F267.8090907@garzik.org> Date: Wed, 24 Feb 2010 22:45:43 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc11 Thunderbird/3.0.1 MIME-Version: 1.0 To: Robert Hancock CC: linux-kernel , ide , Mike Cui , Peer Chen Subject: Re: [PATCH] ahci: disable FPDMA auto-activate optimization on NVIDIA AHCI References: <4B5FC213.1060601@gmail.com> In-Reply-To: <4B5FC213.1060601@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1030 Lines: 25 On 01/26/2010 11:33 PM, Robert Hancock wrote: > Mike Cui reported that his system with an NVIDIA MCP79 (aka MCP7A) chipset > stopped working with 2.6.32. The problem appears to be that 2.6.32 now enables > the FPDMA auto-activate optimization in the ahci driver. The drive works fine > with this enabled on an Intel AHCI so this appears to be a chipset bug. > Since MCP79 is a fairly recent NVIDIA chipset and we don't have any info on > whether any other NVIDIA chipsets have this issue, disable FPDMA AA optimization > on all NVIDIA AHCI controllers for now. > > Should address http://bugzilla.kernel.org/show_bug.cgi?id=14922 > > Signed-off-by: Robert Hancock > > --- > > Mike, can you test this out and make sure this resolves the problem for you? applied -- 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/