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[xhci] Assume an invalid PSI table if any invalid PSI value is observed
Invalid protocol speed ID tables appear to be increasingly common in the wild, to the point that it is infeasible to apply an explicit XHCI_BAD_PSIV flag for each offending PCI device ID. Fix by assuming an invalid PSI table as soon as any invalid value is reported by the hardware. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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