From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: [PATCH 02/12] sata_mv pci features
Date: Fri, 02 May 2008 13:41:42 -0400
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References: <481AAF84.40501@rtr.ca> <481AAFB7.4090708@rtr.ca>	 <481AAFE0.9090101@rtr.ca> <da824cf30805020906k276e6574p93dfe7b696eeda8b@mail.gmail.com>
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To: Grant Grundler <grundler@google.com>
Cc: Jeff Garzik <jgarzik@pobox.com>, Tejun Heo <htejun@gmail.com>, IDE/ATA development list <linux-ide@vger.kernel.org>

Grant Grundler wrote:
..
> In order to enable cut-thru, the docs say "MRdTrig" bit in PCI
> Command Register ()xC00) must also be clear on 6042.
> This _might_ also apply to  7042. I didn't see any code in
> this patch (Perhaps a different one?) to make sure
> "MRdTrig" bit is clear.
..

Were you looking for this, from the same patch #02:

..
>>  +               reg = readl(mmio + PCI_COMMAND_OFS);
>>  +               if (reg & PCI_COMMAND_MRDTRIG)
>>  +                       return 0; /* not okay */
..

And, no, this does not apply to the 7042 (PCI Express version).

Cheers