diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c index 1130b6aac1..b6078b1f09 100644 --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c @@ -1009,7 +1009,11 @@ IsAsyncIntTrb ( return TRUE; } CheckedTrb++; - if ((UINTN)CheckedTrb >= ((UINTN) CheckedUrb->Ring->RingSeg0 + sizeof (TRB_TEMPLATE) * CheckedUrb->Ring->TrbNumber)) { + // + // If the checked TRB is the link TRB at the end of the transfer ring, + // recircle it to the head of the ring. + // + if (CheckedTrb->Type == TRB_TYPE_LINK) { CheckedTrb = (TRB_TEMPLATE*) CheckedUrb->Ring->RingSeg0; } }