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    Subject[PATCH 4.9 68/75] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Daniel Thompson <daniel.thompson@linaro.org>

    commit da99706689481717998d1d48edd389f339eea979 upstream.

    When plugging in a USB webcam I see the following message:
    xhci_hcd 0000:04:00.0: WARN Successful completion on short TX: needs
    XHCI_TRUST_TX_LENGTH quirk?
    handle_tx_event: 913 callbacks suppressed

    All is quiet again with this patch (and I've done a fair but of soak
    testing with the camera since).

    Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
    Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/usb/host/xhci-pci.c | 3 +++
    1 file changed, 3 insertions(+)

    --- a/drivers/usb/host/xhci-pci.c
    +++ b/drivers/usb/host/xhci-pci.c
    @@ -190,6 +190,9 @@ static void xhci_pci_quirks(struct devic
    xhci->quirks |= XHCI_BROKEN_STREAMS;
    }
    if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
    + pdev->device == 0x0014)
    + xhci->quirks |= XHCI_TRUST_TX_LENGTH;
    + if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
    pdev->device == 0x0015)
    xhci->quirks |= XHCI_RESET_ON_RESUME;
    if (pdev->vendor == PCI_VENDOR_ID_VIA)

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