Re: [linux-usb-devel] USB glitches after suspend on ppc

[David Brownell]

On Wednesday 06 April 2005 4:50 pm, Benjamin Herrenschmidt wrote:
> On Wed, 2005-04-06 at 16:28 -0700, David Brownell wrote:
> > On Wednesday 06 April 2005 4:02 pm, Benjamin Herrenschmidt wrote:
> > > 
> > > > Thanks for the testing update.  I'm glad to know that there seems to
> > > > be only one (minor) glitch that's PPC-specific!
> > > 
> > > Which is just an off-the-shelves NEC EHCI chip.
> > 
> > The wakeup-after-suspend hasn't been reported by anyone else.
> 
> Looks like the root hub is set for triggering wakeups on connect, isn't
> that just a setting in there ? The old Apple ASIC had a bit somewhere to
> control that, but I don't know about the NEC

The NEC chip uses PME# for PCI wakeup, which pci_enable_wake(..., 0)
is supposed to have disabled.  If it's not disabling PME#, that's a
bug in the PCI infrastructure on that platform.  If some other signal
is causing a wakeup, that's a different platform-specific issue.  :)


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