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    xhci: Modify check for TT info. · aa1b13ef
    Sarah Sharp 提交于
    Commit d199c96d by Alan Stern ensured that low speed and full speed
    devices below a high speed hub without a transaction translator (TT) would
    never get enumerated.  Simplify the check for a TT in the xHCI virtual
    device allocation to only check if the usb_device references a parent's
    TT.
    
    Make sure not to set the TT information on LS/FS devices directly
    connected to the roothub.  The xHCI host doesn't really have a TT, and the
    host will throw an error when those virtual device TT fields are set for a
    device connected to the roothub.  We need this check because the xHCI
    driver will shortly register two roothubs: a USB 2.0 roothub and a USB 3.0
    roothub.
    Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
    aa1b13ef
xhci-mem.c 59.8 KB