On Wed, 2007-04-18 at 11:42 -0400, Alan Stern wrote: > Something similar needs to be added in ohci-hub.c. Does the patch below > fix your problem?
I stuck in a dump_stack() right before the spin_lock_irqsave too to make sure I was hitting the code path at the same spot I analysed at earlier, and I did hit the code path and had no problems, so yes, it fixes it. johannes > --- usb-2.6.orig/drivers/usb/host/ohci-hub.c > +++ usb-2.6/drivers/usb/host/ohci-hub.c > @@ -417,6 +417,8 @@ ohci_hub_status_data (struct usb_hcd *hc > unsigned long flags; > > spin_lock_irqsave (&ohci->lock, flags); > + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) > + goto done; > > /* undocumented erratum seen on at least rev D */ > if ((ohci->flags & OHCI_QUIRK_AMD756)
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