Commit da997066 authored Dec 21, 2017 by Daniel Thompson Committed by Greg Kroah-Hartman Dec 27, 2017

usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201



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>

parent dde63405

drivers/usb/host/xhci-pci.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;

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