From patchwork Wed Mar 24 14:11:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabian Vogt X-Patchwork-Id: 408594 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 42A68C433E4 for ; Wed, 24 Mar 2021 14:12:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1275461A11 for ; Wed, 24 Mar 2021 14:12:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236098AbhCXOLw (ORCPT ); Wed, 24 Mar 2021 10:11:52 -0400 Received: from mout.kundenserver.de ([212.227.17.13]:34129 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236081AbhCXOLg (ORCPT ); Wed, 24 Mar 2021 10:11:36 -0400 Received: from rpi3.fritz.box ([46.90.46.54]) by mrelayeu.kundenserver.de (mreue109 [213.165.67.113]) with ESMTPA (Nemesis) id 1M1YlB-1lM2MT1g5r-0039CJ; Wed, 24 Mar 2021 15:11:30 +0100 From: Fabian Vogt To: Felipe Balbi Cc: Fabian Vogt , Greg Kroah-Hartman , Yuan-Hsin Chen , linux-usb@vger.kernel.org Subject: [PATCH 7/7] fotg210-udc: Complete OUT requests on short packets Date: Wed, 24 Mar 2021 15:11:15 +0100 Message-Id: <20210324141115.9384-8-fabian@ritter-vogt.de> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20210324141115.9384-1-fabian@ritter-vogt.de> References: <20210324141115.9384-1-fabian@ritter-vogt.de> X-Provags-ID: V03:K1:gXze9JYrTRhG3mLTX6PQa025GuPBasoBCV2n0NSKY6bgscUYKOa +n6/pXvOPSt2p4EcdcpYcqenCNkTgOy+CiVa6UaRF0qvIu52WnLA7iel0e4pMtzt3hY72Du EA18V/bHaYhBFwP8nbFeu4+Ga7Aahzj9sokqLgZZfLacC8OGTTN7C6X0r7tHZ1gn0nPp9/N Zho0WtTxqRUyqLwFBkAsw== X-UI-Out-Filterresults: notjunk:1; V03:K0:u2t0OAREHSk=:4P5amG3ZmO8NNwGzCPhTl1 m2C2aQzjhiX+k02MrA0r7ypq1bYCDSXiYoI2+Ulq/xvQBDgik0qny2KPHevUNpnhfAClehjDh hXGbXR6mbC3yAAnmq7LsLviPaNVlAQcH0W14SJJJYUgLFytuz6CPYPxWDhnqZ9PCdUbHuqFFr 3ueqnlrMbezvLOAXhCOcypG5mbQYxu9o6MavOgDJZ2nRAUcCKwDWfzGNlSUEE0In8SZQQ2PGI s2MYhFwk1aDvOyw16eXBfnkzyXiDSlBY7uoDPXhrzc14Cc1N7ZyfP5uU4OjnLZGtL0fMxPAl3 /bATjbPQQg0gCjH/r5bzPNYHtM6KclCI1/54MEaLrYSKCu5NF5khL4p5Og/ko2HylvCewYV6f FnGRWZNDZHGSCHtpRdp66hjwao1fuIQ6Q2eNafhX8VZ90b8hu1Y+Fk474p494sbcwRLPbirz4 zNt1GmypBA== Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org A short packet indicates the end of a transfer and marks the request as complete. Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver") Signed-off-by: Fabian Vogt --- drivers/usb/gadget/udc/fotg210-udc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c index 7716bd1c8753..6cb7daf725b9 100644 --- a/drivers/usb/gadget/udc/fotg210-udc.c +++ b/drivers/usb/gadget/udc/fotg210-udc.c @@ -863,12 +863,16 @@ static void fotg210_out_fifo_handler(struct fotg210_ep *ep) { struct fotg210_request *req = list_entry(ep->queue.next, struct fotg210_request, queue); + int disgr1 = ioread32(ep->fotg210->reg + FOTG210_DISGR1); fotg210_start_dma(ep, req); - /* finish out transfer */ + /* Complete the request when it's full or a short packet arrived. + * Like other drivers, short_not_ok isn't handled. + */ + if (req->req.length == req->req.actual || - req->req.actual < ep->ep.maxpacket) + (disgr1 & DISGR1_SPK_INT(ep->epnum - 1))) fotg210_done(ep, req, 0); }