From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38CA6C48BDF for ; Thu, 10 Jun 2021 11:40:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DC28613F1 for ; Thu, 10 Jun 2021 11:40:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230264AbhFJLmQ (ORCPT ); Thu, 10 Jun 2021 07:42:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:51586 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229895AbhFJLmQ (ORCPT ); Thu, 10 Jun 2021 07:42:16 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9D2DD613F1; Thu, 10 Jun 2021 11:40:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623325205; bh=J/TMPQPc2oy/61QfiWgtxOtG5ZrbpyV6/x5377ocPv8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NyIG+rBA3zghE+fSM9RMGz58WOVZ9gP+d0ryBNZk9/JZBc1xpOzNy8W1C9GCqvVvL BKBlyQWL1GzDlYvvt0UJOViV/4xEqik+p3b3inXOBEriHYGnaQZt6VbYDAkvqa4bxR xF+I4ezBKz3ESDntYnBo1SILDUU52/QFb104u2O0= Date: Thu, 10 Jun 2021 13:40:02 +0200 From: Greg KH To: kun peng Cc: Felipe Balbi , linux-usb@vger.kernel.org Subject: Re: usb3.0: dwc3: isoc: missisoc while setting the USB transfer UVC data Message-ID: References: <87v96m119n.fsf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Thu, Jun 10, 2021 at 07:33:43PM +0800, kun peng wrote: > On Thu, Jun 10, 2021 at 6:07 PM Felipe Balbi wrote: > > > > Hi, > > > > kun peng writes: > > > Hi ， I'm using the 4*A53 with DWC3 USB controller, my hardware to work > > > like a USB camera and so make use of the USB 3.0 UVC gadget driver。 > > > usb3.0 isoc transfer with missisoc -18，larger maxburst is set, the > > > more -18 appears。 > > > but from trace info, the trb has been put in advance。 > > > > > > test setting: > > > dwc3 driver version：5.12 > > > PC： potplayer > > > > > > maxpacket : 3072 > > > maxburst : 15 > > > interval : 1 > > > UVC_NUM_REQUESTS: 8 > > > > sorry, you're running 4.14.74 kernel. That's far too old for this forum > > to help you. Try reproducing with the latest v5.13-rc kernel. > > > > -- > > balbi > > thanks for your reply. > > my kernel is 4.14, but usb and uvc related driver has been update to > 5.12.0 linux main line. That will not work, you have to update the whole kernel at once, drivers can not be picked and choosen from different kernel trees and expect to work at all, sorry. Please try 5.12 or as Felipe said, the latest 5.13-rc release and let us know if that works or not. thanks, greg k-h