Re: Webcam stops other USB devices (ehci_hcd: HC died; cleaning up)

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Hi Alan,

On Mon, 2012-05-14 at 10:03 -0400, Alan Stern wrote:
> On Sun, 13 May 2012, Geoff Levand wrote:
> 
> > > Does ehci_poll_PSS() get called?  And when it does, does it call 
> > > ehci_set_command_bit()?
> > 
> > 
> > No, ehci_poll_PSS() is never called.  I need to do some more work to
> > understand what's happening.  Any suggestions would be welcome.
> 
> Check out what's happening in enable_periodic().  The first time 
> through, ehci->enabled_hrtimer_events should not have the 
> EHCI_HRTIMER_DISABLE_PERIODIC bit set, so the "if" statement's "else" 
> case should call ehci_poll_PSS().


I was just able to do a quick test, but I found
EHCI_HRTIMER_DISABLE_PERIODIC is set the first time through, so
ehci_poll_PSS() is never called.  I'll look at it some more.

-Geoff

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