From: David Miller <[email protected]>
Date: Tue, 09 Oct 2007 21:35:07 -0700 (PDT)
> From: David Miller <[email protected]>
> Date: Tue, 09 Oct 2007 15:00:40 -0700 (PDT)
>
> > From: David Brownell <[email protected]>
> > Date: Tue, 9 Oct 2007 14:43:54 -0700
> >
> > > Does it resolve the problem you observed?
> >
> > I will definitely give the patch a try and report back.
>
> My tests look really good with Alan Stern's patch.
>
> With a kernel is hacked to load OHCI before EHCI, and
> that always hangs, the patch makes the hang go away
> reliably.
Bad news, even with the rwsem after a lot more testing I can still
trigger the hang in ohci_hub_control() :-(
I think we need to go back to considering the total serialization
approach to this problem.
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