From patchwork Thu Dec 24 13:25:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Yongjun X-Patchwork-Id: 352437 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,USER_AGENT_GIT autolearn=unavailable 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 01407C433E6 for ; Thu, 24 Dec 2020 13:26:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C799C22287 for ; Thu, 24 Dec 2020 13:26:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728161AbgLXN0P (ORCPT ); Thu, 24 Dec 2020 08:26:15 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:10363 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729184AbgLXN0P (ORCPT ); Thu, 24 Dec 2020 08:26:15 -0500 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4D1rQf3Yh0z7JVd; Thu, 24 Dec 2020 21:24:42 +0800 (CST) Received: from ubuntu.network (10.175.138.68) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.498.0; Thu, 24 Dec 2020 21:25:18 +0800 From: Zheng Yongjun To: , CC: , Zheng Yongjun Subject: [PATCH v2 -next] usb: misc: use DEFINE_MUTEX() for mutex lock Date: Thu, 24 Dec 2020 21:25:55 +0800 Message-ID: <20201224132555.31734-1-zhengyongjun3@huawei.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 X-Originating-IP: [10.175.138.68] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org mutex lock can be initialized automatically with DEFINE_MUTEX() rather than explicitly calling mutex_init(). Signed-off-by: Zheng Yongjun --- drivers/usb/misc/ftdi-elan.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 8a3d9c0c8d8b..bfb538f2cac1 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -61,7 +61,7 @@ extern struct platform_driver u132_platform_driver; * ftdi_module_lock exists to protect access to global variables * */ -static struct mutex ftdi_module_lock; +static DEFINE_MUTEX(ftdi_module_lock); static int ftdi_instances = 0; static struct list_head ftdi_static_list; /* @@ -2761,7 +2761,6 @@ static int __init ftdi_elan_init(void) { int result; pr_info("driver %s\n", ftdi_elan_driver.name); - mutex_init(&ftdi_module_lock); INIT_LIST_HEAD(&ftdi_static_list); result = usb_register(&ftdi_elan_driver); if (result) {