On Tue, Aug 14, 2012 at 10:57:58PM +0200, Peter Stuge wrote:
> Matthew Garrett wrote:
> > +++ b/drivers/usb/host/pci-quirks.c
> ..
> > @@ -830,9 +830,17 @@ static void __devinit quirk_usb_handoff_xhci(struct
> > pci_dev *pdev)
> > */
> > ext_cap_offset = xhci_find_next_cap_offset(base,
> > XHCI_HCC_PARAMS_OFFSET);
> > do {
> > + if ((ext_cap_offset + sizeof(val)) > len) {
> > + /* We're reading garbage from the controller */
> > + dev_warn(&pdev->dev,
> > + "xHCI controller failing to respond");
> > + return;
> > + }
>
> Would it be useful to output the have and want values?
The only case where I can imagine this happening is when we're just
getting 0xff back, and in that scenario it's always going to be the same
value.
--
Matthew Garrett | mj...@srcf.ucam.org
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