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=-2.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 5799CC677FC for ; Thu, 11 Oct 2018 19:31:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1EE3C2075C for ; Thu, 11 Oct 2018 19:31:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="gGDQgHpg" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1EE3C2075C Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728173AbeJLDA0 (ORCPT ); Thu, 11 Oct 2018 23:00:26 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:41822 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726214AbeJLDA0 (ORCPT ); Thu, 11 Oct 2018 23:00:26 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id w9BJVgT4108560; Thu, 11 Oct 2018 14:31:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1539286302; bh=FyhPFQ8evN8rekXTVKKA9BeT6FCLx/5FwsEeV/kiDDY=; h=Date:From:To:CC:Subject:References:In-Reply-To; b=gGDQgHpgA0/sfmOG5lcPKJik3Kxqt8OPGaXK9NOavuBsOlgjYDAQnF2iLBuw86qCz sw14GmW+mXTgLQAgPI1dzNq1sTwOxG+IaNwr9MH3iAOeMs3yrFtlgZ9R7QxRWtDj2t /O98SuOKQzWe6owraw+UPyO3+Ge9trMx75QFn8/o= Received: from DLEE107.ent.ti.com (dlee107.ent.ti.com [157.170.170.37]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id w9BJVgOx017444; Thu, 11 Oct 2018 14:31:42 -0500 Received: from DLEE100.ent.ti.com (157.170.170.30) by DLEE107.ent.ti.com (157.170.170.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Thu, 11 Oct 2018 14:31:42 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE100.ent.ti.com (157.170.170.30) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Thu, 11 Oct 2018 14:31:42 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w9BJVgPC017840; Thu, 11 Oct 2018 14:31:42 -0500 Date: Thu, 11 Oct 2018 14:31:42 -0500 From: Bin Liu To: Paul Elder CC: , , , , , , , Subject: Re: [PATCH 0/6] usb: gadget: add mechanism to asynchronously validate data stage of ctrl out request Message-ID: <20181011193142.GC8763@uda0271908> Mail-Followup-To: Bin Liu , Paul Elder , laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, balbi@kernel.org, stern@rowland.harvard.edu, rogerq@ti.com References: <20181010024903.1633-1-paul.elder@ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20181010024903.1633-1-paul.elder@ideasonboard.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Tue, Oct 09, 2018 at 10:48:57PM -0400, Paul Elder wrote: > This patch series adds a mechanism to allow asynchronously validating > the data stage of a control out request, and for stalling or suceeding > the request accordingly. This mechanism is implemented for MUSB, and is > used by UVC. At the same time, UVC packages the setup stage and data Why is this for MUSB only? Other UDC such as DWC3 doesn't need this? Regards, -Bin.