From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH] Restore SB600 SATA controller 64 bit DMA Date: Wed, 10 Jun 2009 11:06:01 -0400 Message-ID: <4A2FCBD9.4090604@pobox.com> References: <1243407883.3220.10.camel@brienza-desktop> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:54614 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754937AbZFJPGE (ORCPT ); Wed, 10 Jun 2009 11:06:04 -0400 In-Reply-To: <1243407883.3220.10.camel@brienza-desktop> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: shane.huang@amd.com Cc: tj@kernel.org, linux-ide@vger.kernel.org Shane Huang wrote: > Community reported one SB600 SATA issue(BZ #9412), which led to 64 bit > DMA disablement for all SB600 revisions by driver maintainers with > commits c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c and > 4cde32fc4b32e96a99063af3183acdfd54c563f0. > > But the root cause is ASUS M2A-VM system BIOS bug in old revisions > like 0901, while forcing into 32bit DMA happens to work as workaround. > Now it's time to withdraw 4cde32fc4b32e96a99063af3183acdfd54c563f0 > so as to restore the SB600 SATA 64bit DMA capability. > This patch is also adding the workaround for M2A-VM old BIOS revisions, > but users are suggested to upgrade their system BIOS to the latest one > if they meet this issue. > > Signed-off-by: Shane Huang > Cc: Tejun Heo applied