// Note that EhciDxe driver is enhanced to guarantee that the EHCI controller get attached\r
// to the EHCI controller before the UHCI driver attaches to the companion UHCI controller.\r
// This way avoids the control transfer on a shared port between EHCI and companion host\r
// controller when UHCI gets attached earlier than EHCI and a USB 2.0 device inserts.\r
//\r
// Note that EhciDxe driver is enhanced to guarantee that the EHCI controller get attached\r
// to the EHCI controller before the UHCI driver attaches to the companion UHCI controller.\r
// This way avoids the control transfer on a shared port between EHCI and companion host\r
// controller when UHCI gets attached earlier than EHCI and a USB 2.0 device inserts.\r
//\r