Re: Hibernation with LPM, was: Re: xhci: LPM issues using Western Digital harddrive

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On Tue, 16 Oct 2012, Sarah Sharp wrote:

> > > > In addition to this, I see that ehci-hcd includes some basic support
> > > > for LPM but it doesn't implement the set_usb2_hw_lpm HCD method.  It's
> > > > a sort of do-it-yourself approach (and it includes a bunch of bugs).
> > > 
> > > Yeah, I think Jacob Pan and another OTC person worked on the USB 2.1 LPM
> > > for an Intel SoC board, but they never found very many USB 2.1 devices,
> > > so they couldn't test it very well.
> > 
> > Maybe that's an indication we shouldn't bother to support it.  What do 
> > you think?  I could take it out of ehci-hcd easily enough.
> 
> My instinct is to just take out.  But Alex and Jacob should probably
> have some input on that.

Given that ten days have gone by with no comment on this, I will go 
ahead and remove the USB-2.1 LPM code from ehci-hcd.

Last chance for any objections...

Alan Stern

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