On Fri, 2007-04-20 at 11:33 -0400, Alan Stern wrote: > This patch (as901) fixes an oversight in ohci-hcd. The > hub_status_data routine must not try to access the controller's > memory-mapped registers if the controller is in a low-power state; > such attempts will cause a crash on some architectures (such as PPC).
What ever happened to this? It doesn't *seem* to be in the current tree, or am I missing something? > Signed-off-by: Alan Stern <[EMAIL PROTECTED]> > > --- > > Index: usb-2.6/drivers/usb/host/ohci-hub.c > =================================================================== > --- 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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