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26b8501280
We send ADDRESS DEVICE CMD in XhcInitializeDeviceSlot(), which will cause XHC issue a USB SET_ADDRESS request to the USB Device. According to USB spec, there should have a 10ms delay before this operation after resetting a given port. But in original code, there is a possible path which may have no such 10ms delay: UsbHubResetPort()->UsbHubSetPortFeature()->Stall(20)->UsbHubGetPortSt atus()->XhcPollPortStatusChange()->(if RESET_C bit is set)-> XhcInitializeDeviceSlot()->(if RESET_C bit is set)->Stall(10) So this patch is used to fix above issue. Cc: Star Zeng <star.zeng@intel.com> Cc: Baraneedharan Anbazhagan <anbazhagan@hp.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Feng Tian <feng.tian@intel.com> Tested-by: Baraneedharan Anbazhagan <anbazhagan@hp.com> Reviewed-by: Star Zeng <star.zeng@intel.com>