From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff Garzik <jeff@garzik.org>
Subject: Re: [PATCH #upstream-fixes] ahci: disable 64bit DMA by default on
 SB600s
Date: Tue, 06 Oct 2009 00:23:34 -0400
Message-ID: <4ACAC646.9050606@garzik.org>
References: <4AC71901.6010005@kernel.org>
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To: Tejun Heo <tj@kernel.org>
Cc: IDE/ATA development list <linux-ide@vger.kernel.org>, Shane Huang <Shane.Huang@amd.com>, stable@kernel.org, balducci@units.it, maierp@informatik.tu-muenchen.de

On 10/03/2009 05:27 AM, Tejun Heo wrote:
> Till now only one board, ASUS M2A-VM, can do 64bit dma with recent
> BIOSen.  Enabling 64bit DMA by default already broke three boards.
> Enabling 64bit DMA isn't worth these regressions.  Disable 64bit DMA
> by default and enable it only on boards which are known to work.
>
> Signed-off-by: Tejun Heo<tj@kernel.org>
> Reported-by: Gabriele Balducci<balducci@units.it>
> Reported-by: maierp@informatik.tu-muenchen.de
> Cc: Shane Huang<shane.huang@amd.com>
> Cc: stable@kernel.org
> ---
>   drivers/ata/ahci.c |   60 +++++++++++++++++------------------------------------
>   1 file changed, 20 insertions(+), 40 deletions(-)

applied