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Message-Id: <20071015.150124.78710191.davem@davemloft.net> Date: Mon, 15 Oct 2007 15:01:24 -0700 (PDT) From: David Miller <davem@...emloft.net> To: david-b@...bell.net Cc: stern@...land.harvard.edu, greg@...ah.com, linux-kernel@...r.kernel.org, linux-usb-users@...ts.sourceforge.net Subject: Re: [Linux-usb-users] OHCI root_port_reset() deadly loop... From: David Miller <davem@...emloft.net> Date: Tue, 09 Oct 2007 21:35:07 -0700 (PDT) > From: David Miller <davem@...emloft.net> > Date: Tue, 09 Oct 2007 15:00:40 -0700 (PDT) > > > From: David Brownell <david-b@...bell.net> > > 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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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