Re: [PATCH #upstream-fixes 3/3] ahci: implement AHCI_HFLAG_NO_FPDMA_AA and update NV quirks

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On 03/10/2010 08:40 PM, Tejun Heo wrote:
It turns out different generations of MCPs have differing quirks.

* MCP 65-73 : FPDMA AA broken, lies about PMP support, forgets to report NCQ
* MCP 77-79 : FPDMA AA broken, lies about PMP support
* MCP 89    : FPDMA AA broken

Instead of turngin off FPDMA AA on all NVIDIAs, implement
HFLAG_NO_FPDMA_AA, define additional board IDs and apply necessary
quirks.

This fixes bko#15481 and the list of quirks is verified by Peer Chen.

   http://bugzilla.kernel.org/show_bug.cgi?id=15481

Signed-off-by: Tejun Heo<tj@xxxxxxxxxx>
Cc: Peer Chen<pchen@xxxxxxxxxx>

Is the FPDMA AA problem going to be fixed in whatever follows MCP89? This change is only safe if it will be, since a new chipset will fall into the generic case and it'll get turned back on.
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