On Fri, May 05, 2006 at 02:43:03PM -0400, Alan Stern wrote:
> Greg:
> 
> Here's a question for you.
> 
> The current 2.6.17-rc driver handles FSBR rather poorly.  For most
> purposes it doesn't matter.  But under certain kinds of load, like with a
> Bluetooth adapter attached, it can increase power consumption noticeably
> (on the order of 2 watts) compared to 2.6.16.  This can be as much as 10% 
> of the total power usage of a laptop computer.
> 
> I've got a patch for uhci-hcd which re-implements FSBR in a much better
> way.  It's a little long for -rc4 (15 KB), mostly because it was supposed
> to come later in the pipeline.  That is, I had intended to submit a couple
> of other patches first, but the power consumption issue seemed more
> important -- as a result, part of the work those other patches did had to
> be folded in with the FSBR stuff, making it longer.
> 
> What should I do?  If I submit the standalone FSBR patch now, will it get
> into 2.6.17-final?  If not then I might as well go back to the original
> patch sequence and get the whole schmeer into 2.6.18; people with
> notebooks and USB Bluetooth will just have to suffer with the increased
> power usage until then.

I say wait and do it correctly for 2.6.18, as it's too late for 2.6.17
like you say.

thanks,

greg k-h


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