Hi Takashi, Can you check whether the following three patches fix your issues with the stalling USB 1.1 audio devices under an xHCI host? Thanks! Sarah Sharp (3): xhci: Update internal dequeue pointers after stalls. xhci: Fix cycle bit calculation during stall handling. xhci: Clean up cycle bit math used during stalls. drivers/usb/host/xhci-ring.c | 51 +++++++++++++++++++++++++++++++++++------ drivers/usb/host/xhci.h | 9 +++++++ 2 files changed, 52 insertions(+), 8 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html