Re: [PATCH] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201

From: Mathias Nyman
Date: Wed Dec 13 2017 - 06:04:43 EST


On 12.12.2017 18:54, Ard Biesheuvel wrote:
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>

Thanks, adding

-Mathias