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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