From patchwork Thu Apr 8 11:38:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 12190735 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 80CAEC433B4 for ; Thu, 8 Apr 2021 11:41:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 46754611AF for ; Thu, 8 Apr 2021 11:41:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231293AbhDHLlK (ORCPT ); Thu, 8 Apr 2021 07:41:10 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:15977 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231295AbhDHLlK (ORCPT ); Thu, 8 Apr 2021 07:41:10 -0400 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FGK5y176tzyNbj; Thu, 8 Apr 2021 19:38:46 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.498.0; Thu, 8 Apr 2021 19:40:51 +0800 From: Yicong Yang To: , CC: , , , , , Subject: [PATCH 5/7] iio: core: simplify some devm functions Date: Thu, 8 Apr 2021 19:38:14 +0800 Message-ID: <1617881896-3164-6-git-send-email-yangyicong@hisilicon.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1617881896-3164-1-git-send-email-yangyicong@hisilicon.com> References: <1617881896-3164-1-git-send-email-yangyicong@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-iio@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: Yicong Yang --- drivers/iio/industrialio-core.c | 43 +++++++++++++++-------------------------- 1 file changed, 16 insertions(+), 27 deletions(-) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 7db761a..2dfbed3 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1627,9 +1627,9 @@ void iio_device_free(struct iio_dev *dev) } EXPORT_SYMBOL(iio_device_free); -static void devm_iio_device_release(struct device *dev, void *res) +static void devm_iio_device_release(void *iio_dev) { - iio_device_free(*(struct iio_dev **)res); + iio_device_free(iio_dev); } /** @@ -1645,20 +1645,17 @@ static void devm_iio_device_release(struct device *dev, void *res) */ struct iio_dev *devm_iio_device_alloc(struct device *parent, int sizeof_priv) { - struct iio_dev **ptr, *iio_dev; - - ptr = devres_alloc(devm_iio_device_release, sizeof(*ptr), - GFP_KERNEL); - if (!ptr) - return NULL; + struct iio_dev *iio_dev; + int ret; iio_dev = iio_device_alloc(parent, sizeof_priv); - if (iio_dev) { - *ptr = iio_dev; - devres_add(parent, ptr); - } else { - devres_free(ptr); - } + if (!iio_dev) + return iio_dev; + + ret = devm_add_action_or_reset(parent, devm_iio_device_release, + iio_dev); + if (ret) + return ERR_PTR(ret); return iio_dev; } @@ -1889,29 +1886,21 @@ void iio_device_unregister(struct iio_dev *indio_dev) } EXPORT_SYMBOL(iio_device_unregister); -static void devm_iio_device_unreg(struct device *dev, void *res) +static void devm_iio_device_unreg(void *indio_dev) { - iio_device_unregister(*(struct iio_dev **)res); + iio_device_unregister(indio_dev); } int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev, struct module *this_mod) { - struct iio_dev **ptr; int ret; - ptr = devres_alloc(devm_iio_device_unreg, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return -ENOMEM; - - *ptr = indio_dev; ret = __iio_device_register(indio_dev, this_mod); - if (!ret) - devres_add(dev, ptr); - else - devres_free(ptr); + if (ret) + return ret; - return ret; + return devm_add_action_or_reset(dev, devm_iio_device_unreg, indio_dev); } EXPORT_SYMBOL_GPL(__devm_iio_device_register);