Re: Help needed for EHCI problem: removing an active bulk-in QH

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On Tue, 17 Nov 2015, Michael Reutman wrote:

> > Apologies for the delay, been working on another project recently that
> > has taken up most of my time.
> >
> > I applied the patch and have ran our application for 20 to 30 minutes
> > thus far without issue. Later on tonight I'll set it up for an
> > overnight test to ensure that it doesn't get stuck somewhere further
> > down the line.
> >
> > Hopefully this is the fix!
> 
> Ran 1 million operations of launch+cancel usb transfers last night
> without getting into the stuck state. I'll bump up the iterations to
> 10 million or so and run it again tonight just to be certain, but I
> think the last patch has the fix needed for this particular hardware.

Okay, that sounds good.  If everything works out, I'll write a patch 
that does all this properly and ask you to test it.

Alan Stern

PS: Assuming it does work out, I would appreciate seeing the usb_snoop 
output for a run containing just 20 iterations or so.

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