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[added,to,the,4.1,stable,tree] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201

Message ID 20180301152116.1486-101-alexander.levin@microsoft.com
State New
Headers show
Series [added,to,the,4.1,stable,tree] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 | expand

Commit Message

Sasha Levin March 1, 2018, 3:23 p.m. UTC 
From: Daniel Thompson <daniel.thompson@linaro.org>


This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.

-- 
2.14.1
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Patch

===============

[ Upstream commit da99706689481717998d1d48edd389f339eea979 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/usb/host/xhci-pci.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index e91cbf360afe..8a82e14829e9 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -181,6 +181,9 @@  static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 		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;