linux-kernel - Re: [PATCH] usb: xhci: Add XHCI_TRUST_TX

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Date:   Wed, 13 Dec 2017 13:07:09 +0200
From:   Mathias Nyman <mathias.nyman@...ux.intel.com>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        linux-usb <linux-usb@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Patch Tracking <patches@...aro.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201

On 12.12.2017 18:54, Ard Biesheuvel wrote:
> On 12 December 2017 at 16:47, Daniel Thompson
> <daniel.thompson@...aro.org> 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@...r.kernel.org>
>> Signed-off-by: Daniel Thompson <daniel.thompson@...aro.org>
> 
> 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@...aro.org>

Thanks, adding

-Mathias