4.9-stable review patch.  If anyone has any objections, please let me know.

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

From: Daniel Thompson <daniel.thomp...@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.thomp...@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
Signed-off-by: Mathias Nyman <mathias.ny...@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@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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