Re: [REGRESSION] usb devices don't wake up the system

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On Thu, 1 Jul 2010, Maxim Levitsky wrote:

> On Thu, 2010-07-01 at 01:40 +0200, Rafael J. Wysocki wrote:
> > On Thursday, July 01, 2010, Maxim Levitsky wrote:
> > > Hi,
> > > 
> > > 
> > > This is my desktop, and I don't use it much.
> > > I updated the kernel from 2.6.33 to 2.6.35-rc3, and my usb mouse (usb
> > > 1.1 of course) doesn't wake the system anymore.
> > 
> > Please wait for 2.6.35-rc4 to appear and see if there's any difference.
> Why should I?
> I always compile from git.
> Just pulled Linus' tree, and nothing changed.

On my system there's no problem -- but my development tree isn't
vanilla 2.6.35-rc3.  Note, however, that with my Microsoft USB optical
mouse I have to use _two_ button clicks to wake up the system.  One
click isn't enough -- I don't know why.

Enabling power/wakeup for the 0000:00:1d.0 and 5-1 devices should be 
all you need to do.  It should already be enabled by default for the 
usb5 device.

You _might_ find that this patch helps:

	http://marc.info/?l=linux-usb&m=127748897212461&w=2

although since it worked okay in 2.6.33, I doubt the patch will make 
any difference.

In fact, you're in a very good position to use git bisect.  I would be 
curious to know the exact change responsible for this regression.

Alan Stern

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