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=-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=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 E1F8EC433ED for ; Thu, 8 Apr 2021 01:13:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ACC7C61168 for ; Thu, 8 Apr 2021 01:13:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229849AbhDHBNd (ORCPT ); Wed, 7 Apr 2021 21:13:33 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:15957 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229497AbhDHBNd (ORCPT ); Wed, 7 Apr 2021 21:13:33 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FG39p3CFmzwRdg; Thu, 8 Apr 2021 09:11:10 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.498.0; Thu, 8 Apr 2021 09:13:11 +0800 From: Tian Tao To: , CC: , Tian Tao , Yicong Yang Subject: [PATCH] watchdog: simplify devm_watchdog_register_device Date: Thu, 8 Apr 2021 09:13:36 +0800 Message-ID: <1617844416-64519-1-git-send-email-tiantao6@hisilicon.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Use devm_add_action_or_reset() instead of devres_alloc() and devres_add(), which works the same. This will simplify the code. There is no functional changes. Signed-off-by: Tian Tao Signed-off-by: Yicong Yang --- drivers/watchdog/watchdog_core.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index 5df0a22..cea6080 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -364,9 +364,9 @@ void watchdog_unregister_device(struct watchdog_device *wdd) EXPORT_SYMBOL_GPL(watchdog_unregister_device); -static void devm_watchdog_unregister_device(struct device *dev, void *res) +static void devm_watchdog_unregister_device(void *wdd) { - watchdog_unregister_device(*(struct watchdog_device **)res); + watchdog_unregister_device(wdd); } /** @@ -381,23 +381,14 @@ static void devm_watchdog_unregister_device(struct device *dev, void *res) int devm_watchdog_register_device(struct device *dev, struct watchdog_device *wdd) { - struct watchdog_device **rcwdd; int ret; - rcwdd = devres_alloc(devm_watchdog_unregister_device, sizeof(*rcwdd), - GFP_KERNEL); - if (!rcwdd) - return -ENOMEM; - ret = watchdog_register_device(wdd); - if (!ret) { - *rcwdd = wdd; - devres_add(dev, rcwdd); - } else { - devres_free(rcwdd); - } + if (ret) + return ret; - return ret; + return devm_add_action_or_reset(dev, devm_watchdog_unregister_device, + wdd); } EXPORT_SYMBOL_GPL(devm_watchdog_register_device); -- 2.7.4