[3/3] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201

Message ID 1513861575-6882-4-git-send-email-mathias.nyman@linux.intel.com
State New
Headers show
Series
  • Untitled series #7391
Related show

Commit Message

Mathias Nyman Dec. 21, 2017, 1:06 p.m.
From: Daniel Thompson <daniel.thompson@linaro.org>


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).

Cc: <stable@vger.kernel.org>
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>

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

-- 
2.7.4

Patch

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 7ef1274..1aad89b 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -178,6 +178,9 @@  static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 		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)