commit 00c1504c478a364d74cf9720643a57d9fd180a6b
Author: Sebastian Sumpf <sebastian.sumpf@genode-labs.com>
Date:   Mon Jun 2 13:36:46 2014 +0200

    xhci-quirks.patch

--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -38,6 +38,8 @@
 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI	0x8c31
 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI	0x9c31
 
+#define PCI_VENDOR_ID_RENESAS	0x1912
+
 static const char hcd_name[] = "xhci_hcd";
 
 /* called after powerup, by probe or system-pm "wakeup" */
@@ -95,6 +97,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 	if (pdev->vendor == PCI_VENDOR_ID_NEC)
 		xhci->quirks |= XHCI_NEC_HOST;
 
+	/* Quirk for RENESAS USB 3.0 express cards */
+	 if (pdev->vendor == PCI_VENDOR_ID_RENESAS)
+		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+
 	if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96)
 		xhci->quirks |= XHCI_AMD_0x96_HOST;