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SubjectRe: 64-bit DMA problems with BCM4312 using b43
On Fri, Nov 13, 2009 at 03:05:18PM -0600, Larry Finger wrote:

> I'm in the process of creating a patch to set the latency to 200 usec. The
> default is 2000. On my fast prosessors, it should not be anything nearly that
> slow. If we determine this to be the problem, then we can try tuning.

The latency is the amount of time it takes to get out of deep C states
and into C0. That's a function of the processor design rather than the
frequency.

--
Matthew Garrett | mjg59@srcf.ucam.org


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