On 12 December 2017 at 16:47, Daniel Thompson <daniel.thompson@xxxxxxxxxx> wrote: > 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@xxxxxxxxxxxxxxx> > Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx> I have been setting this quirk manually for ages on my kernel command line, for the same reason (MS HD Webcam), and with the same positive result, so Acked-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> > --- > 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 7ef1274ef7f7..1aad89b8aba0 100644 > --- a/drivers/usb/host/xhci-pci.c > +++ b/drivers/usb/host/xhci-pci.c > @@ -177,6 +177,9 @@ 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; > -- > 2.14.2 > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
