From patchwork Wed Aug 25 10:51:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 12457239 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=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 7C81BC4338F for ; Wed, 25 Aug 2021 10:51:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5E135611C9 for ; Wed, 25 Aug 2021 10:51:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239844AbhHYKwd (ORCPT ); Wed, 25 Aug 2021 06:52:33 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:45288 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231697AbhHYKwc (ORCPT ); Wed, 25 Aug 2021 06:52:32 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 17PApfWn003141; Wed, 25 Aug 2021 05:51:41 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1629888701; bh=ryQV4OtgpjUer2JjK/Hy7MnRhygrr4yUFCxHpTqta4U=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=Y0p3QrHOpw68TtqYLarmehgmne8Io5Jm//jwFsyBZeC26+UxFJ13PhFUyq4egn3qV V20fe8tTJ2gD18TxFqD0iM475Es3mIq4SIGIMUr/REvW8LqPu35d191Cp2b1LgaCGh mluKUvCGezixeiLrImAItl5v/87sgxhtboNJPDbc= Received: from DLEE104.ent.ti.com (dlee104.ent.ti.com [157.170.170.34]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 17PApfEH070934 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 25 Aug 2021 05:51:41 -0500 Received: from DLEE111.ent.ti.com (157.170.170.22) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 25 Aug 2021 05:51:40 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE111.ent.ti.com (157.170.170.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Wed, 25 Aug 2021 05:51:40 -0500 Received: from a0393678-lt.ent.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 17PApW86129194; Wed, 25 Aug 2021 05:51:37 -0500 From: Kishon Vijay Abraham I To: Greg Kroah-Hartman , Mathias Nyman , Alan Stern CC: , , , Kishon Vijay Abraham I , Subject: [PATCH 1/3] usb: core: hcd: Modularize HCD stop configuration in usb_stop_hcd() Date: Wed, 25 Aug 2021 16:21:30 +0530 Message-ID: <20210825105132.10420-2-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210825105132.10420-1-kishon@ti.com> References: <20210825105132.10420-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org No functional change. Since configuration to stop HCD is invoked from multiple places, group all of them in usb_stop_hcd(). Signed-off-by: Kishon Vijay Abraham I Acked-by: Alan Stern --- drivers/usb/core/hcd.c | 39 ++++++++++++++++++++++----------------- 1 file changed, 22 insertions(+), 17 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 0f8b7c93310e..775f0456f0ad 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2760,6 +2760,26 @@ static void usb_put_invalidate_rhdev(struct usb_hcd *hcd) usb_put_dev(rhdev); } +/** + * usb_stop_hcd - Halt the HCD + * @hcd: the usb_hcd that has to be halted + * + * Stop the timer and invoke ->stop() callback on the HCD + */ +static void usb_stop_hcd(struct usb_hcd *hcd) +{ + hcd->rh_pollable = 0; + clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); + del_timer_sync(&hcd->rh_timer); + + hcd->driver->stop(hcd); + hcd->state = HC_STATE_HALT; + + /* In case the HCD restarted the timer, stop it again. */ + clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); + del_timer_sync(&hcd->rh_timer); +} + /** * usb_add_hcd - finish generic HCD structure initialization and register * @hcd: the usb_hcd structure to initialize @@ -2946,13 +2966,7 @@ int usb_add_hcd(struct usb_hcd *hcd, return retval; err_register_root_hub: - hcd->rh_pollable = 0; - clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - del_timer_sync(&hcd->rh_timer); - hcd->driver->stop(hcd); - hcd->state = HC_STATE_HALT; - clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - del_timer_sync(&hcd->rh_timer); + usb_stop_hcd(hcd); err_hcd_driver_start: if (usb_hcd_is_primary_hcd(hcd) && hcd->irq > 0) free_irq(irqnum, hcd); @@ -3022,16 +3036,7 @@ void usb_remove_hcd(struct usb_hcd *hcd) * interrupt occurs), but usb_hcd_poll_rh_status() won't invoke * the hub_status_data() callback. */ - hcd->rh_pollable = 0; - clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - del_timer_sync(&hcd->rh_timer); - - hcd->driver->stop(hcd); - hcd->state = HC_STATE_HALT; - - /* In case the HCD restarted the timer, stop it again. */ - clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); - del_timer_sync(&hcd->rh_timer); + usb_stop_hcd(hcd); if (usb_hcd_is_primary_hcd(hcd)) { if (hcd->irq > 0)