Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752778AbdLMLEl (ORCPT ); Wed, 13 Dec 2017 06:04:41 -0500 Received: from mga11.intel.com ([192.55.52.93]:24139 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752366AbdLMLEh (ORCPT ); Wed, 13 Dec 2017 06:04:37 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,397,1508828400"; d="scan'208";a="11481678" Subject: Re: [PATCH] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 To: Ard Biesheuvel , Daniel Thompson Cc: Mathias Nyman , linux-usb , Greg Kroah-Hartman , "linux-kernel@vger.kernel.org" , Patch Tracking , "stable@vger.kernel.org" References: <20171212164738.31463-1-daniel.thompson@linaro.org> From: Mathias Nyman Message-ID: <63f6ff0c-e446-dd6f-64bf-61e7b6992e73@linux.intel.com> Date: Wed, 13 Dec 2017 13:07:09 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 790 Lines: 23 On 12.12.2017 18:54, Ard Biesheuvel wrote: > On 12 December 2017 at 16:47, Daniel Thompson > 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: >> Signed-off-by: Daniel Thompson > > 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 Thanks, adding -Mathias