When plugging Logitech C920 webcam, warning messages filled up dmesg: [77117.655018] xhci_hcd 0000:0c:00.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [77117.659018] xhci_hcd 0000:0c:00.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? [77122.622952] handle_tx_event: 541 callbacks suppressed
No more warning messages with XHCI_TRUST_TX_LENGTH applied. BugLink: https://bugs.launchpad.net/bugs/1710548 Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com> --- drivers/usb/host/xhci-pci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 8071c8fdd15e..8566b43e19ba 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -202,8 +202,10 @@ 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 == 0x0015) + pdev->device == 0x0015) { xhci->quirks |= XHCI_RESET_ON_RESUME; + xhci->quirks |= XHCI_TRUST_TX_LENGTH; + } if (pdev->vendor == PCI_VENDOR_ID_VIA) xhci->quirks |= XHCI_RESET_ON_RESUME; -- 2.14.1
