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

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

From: Huang Rui <[email protected]>

commit 2597fe99bb0259387111d0431691f5daac84f5a5 upstream.

AMD xHC also needs short tx quirk after tested on most of chipset
generations. That's because there is the same incorrect behavior like
Fresco Logic host. Please see below message with on USB webcam
attached on xHC host:

[  139.262944] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.266934] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.270913] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.274937] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.278914] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.282936] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.286915] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.290938] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.294913] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?
[  139.298917] xhci_hcd 0000:00:10.0: WARN Successful completion on short TX: 
needs XHCI_TRUST_TX_LENGTH quirk?

Reported-by: Arindam Nath <[email protected]>
Tested-by: Shriraj-Rai P <[email protected]>
Signed-off-by: Huang Rui <[email protected]>
Signed-off-by: Mathias Nyman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
---
 drivers/usb/host/xhci-pci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 67394da..3fc8d9e 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -101,6 +101,10 @@ static void xhci_pci_quirks(struct device *dev, struct 
xhci_hcd *xhci)
        /* AMD PLL quirk */
        if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
                xhci->quirks |= XHCI_AMD_PLL_FIX;
+
+       if (pdev->vendor == PCI_VENDOR_ID_AMD)
+               xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+
        if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
                xhci->quirks |= XHCI_LPM_SUPPORT;
                xhci->quirks |= XHCI_INTEL_HOST;
-- 
1.9.1

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