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=-15.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 579F2C433DB for ; Thu, 7 Jan 2021 11:09:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 17829216FD for ; Thu, 7 Jan 2021 11:09:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727924AbhAGLJb (ORCPT ); Thu, 7 Jan 2021 06:09:31 -0500 Received: from mga09.intel.com ([134.134.136.24]:16685 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726362AbhAGLJa (ORCPT ); Thu, 7 Jan 2021 06:09:30 -0500 IronPort-SDR: RtDZ7LnG+dYuPUnzZoFQL4miwwX1v3z7dW6UP26ld1X35gsa/+Q4rLC7857D1qTC1fX0oG+Png UXP4I2+M5+KA== X-IronPort-AV: E=McAfee;i="6000,8403,9856"; a="177561721" X-IronPort-AV: E=Sophos;i="5.79,329,1602572400"; d="scan'208";a="177561721" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jan 2021 03:07:43 -0800 IronPort-SDR: iRT3g9fqFS1nKSm4d846pZC8RuDS2fVn/mIoJ+ck83lwo4Jli1Y4KZm7AaWSlDBqOreGqIyxzL y6YnatQPJMJA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,329,1602572400"; d="scan'208";a="343858622" Received: from mattu-haswell.fi.intel.com (HELO [10.237.72.170]) ([10.237.72.170]) by fmsmga007.fm.intel.com with ESMTP; 07 Jan 2021 03:07:40 -0800 Subject: Re: [PATCH v5] usb: xhci-mtk: fix unreleased bandwidth data To: Ikjoon Jang , linux-mediatek@lists.infradead.org, linux-usb@vger.kernel.org Cc: Chunfeng Yun , Tianping Fang , Zhanyong Wang , Greg Kroah-Hartman , Mathias Nyman , Matthias Brugger , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20201229142406.v5.1.Id0d31b5f3ddf5e734d2ab11161ac5821921b1e1e@changeid> From: Mathias Nyman Autocrypt: addr=mathias.nyman@linux.intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201229142406.v5.1.Id0d31b5f3ddf5e734d2ab11161ac5821921b1e1e@changeid> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29.12.2020 8.24, Ikjoon Jang wrote: > xhci-mtk has hooks on add_endpoint() and drop_endpoint() from xhci > to handle its own sw bandwidth managements and stores bandwidth data > into internal table every time add_endpoint() is called, > so when bandwidth allocation fails at one endpoint, all earlier > allocation from the same interface could still remain at the table. > > This patch adds two more hooks from check_bandwidth() and > reset_bandwidth(), and make mtk-xhci to releases all failed endpoints > from reset_bandwidth(). > > Fixes: 08e469de87a2 ("usb: xhci-mtk: supports bandwidth scheduling with multi-TT") > Signed-off-by: Ikjoon Jang > ... > > diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c > index d4a8d0efbbc4..e1fcd3cf723f 100644 > --- a/drivers/usb/host/xhci.c > +++ b/drivers/usb/host/xhci.c > @@ -2882,6 +2882,12 @@ static int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) > xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev); > virt_dev = xhci->devs[udev->slot_id]; > > + if (xhci->quirks & XHCI_MTK_HOST) { > + ret = xhci_mtk_check_bandwidth(hcd, udev); > + if (ret < 0) > + return ret; > + } > + Just noticed that XHCI_MTK_HOST quirk is only set in xhci-mtk.c. xhci-mtk.c calls xhci_init_driver(..., xhci_mtk_overrides) with a .reset override function. why not add override functions for .check_bandwidth and .reset_bandwidth to xhci_mtk_overrides instead? Another patch to add similar overrides for .add_endpoint and .drop_endpoint should probably be done so that we can get rid of the xhci_mtk_add/drop_ep_quirk() calls in xhci.c as well Thanks -Mathias