From patchwork Wed Sep 4 12:36:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: lizetao X-Patchwork-Id: 13790754 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D8C3D1D935E; Wed, 4 Sep 2024 12:27:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.189 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725452865; cv=none; b=kPFJvh9KeYgMfCBmqeUMPMIi4TbhfZjI+WqiITUoiDh3UlsHXyx1k7lGapnthtZ6pP2SVFtcO7blzcXV+2er7VWGfYTtX2qkKrvvKXqBvehW5sIwcNryFWfhLwser9VkUwNEIJXkUVbQLY6omNCRdPdLhMGPV8G+nb6faLbqve8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725452865; c=relaxed/simple; bh=uw4j/zlyC5vrAadl/KXV1Qt0z1isEAELIAL+OodPpws=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LKxjJHiIrbDX6yeLraXuvJ9CJadG0kEd8xoANv3lB1y8pyoHLfykABCJeWm3o7QvxEt96bV8Q2m+Dxhe8xLicpyhZGI0kDnDn7SKIll3MfQBVYRVlM9vivL1RJ3vhWPYkLCJJ5w4HtNVoud8YTj6pokOJ6Y4fR+8cDoMt9Jxh8A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.189 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.174]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4WzM843VH9z69WC; Wed, 4 Sep 2024 20:22:44 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id 1193714011A; Wed, 4 Sep 2024 20:27:42 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemd500012.china.huawei.com (7.221.188.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.34; Wed, 4 Sep 2024 20:27:41 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , CC: , , , Subject: [PATCH -next 18/19] hwmon: (nzxt-kraken3) Use devm_hid_hw_start_and_open in kraken3_probe() Date: Wed, 4 Sep 2024 20:36:06 +0800 Message-ID: <20240904123607.3407364-19-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240904123607.3407364-1-lizetao1@huawei.com> References: <20240904123607.3407364-1-lizetao1@huawei.com> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemd500012.china.huawei.com (7.221.188.25) Currently, the nzxt-kraken2 module needs to maintain hid resources by itself. Consider using devm_hid_hw_start_and_open helper to ensure that hid resources are consistent with the device life cycle, and release hid resources before device is released. At the same time, it can avoid the goto-release encoding, drop the fail_and_close and fail_and_stop lables, and directly return the error code when an error occurs. Signed-off-by: Li Zetao --- drivers/hwmon/nzxt-kraken3.c | 34 +++++++--------------------------- 1 file changed, 7 insertions(+), 27 deletions(-) diff --git a/drivers/hwmon/nzxt-kraken3.c b/drivers/hwmon/nzxt-kraken3.c index 00f3ac90a290..71b8c21cfe1b 100644 --- a/drivers/hwmon/nzxt-kraken3.c +++ b/drivers/hwmon/nzxt-kraken3.c @@ -897,17 +897,9 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id } /* Enable hidraw so existing user-space tools can continue to work */ - ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); - if (ret) { - hid_err(hdev, "hid hw start failed with %d\n", ret); + ret = devm_hid_hw_start_and_open(hdev, HID_CONNECT_HIDRAW); + if (ret) return ret; - } - - ret = hid_hw_open(hdev); - if (ret) { - hid_err(hdev, "hid hw open failed with %d\n", ret); - goto fail_and_stop; - } switch (hdev->product) { case USB_PRODUCT_ID_X53: @@ -928,15 +920,12 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id device_name = "kraken2023elite"; break; default: - ret = -ENODEV; - goto fail_and_close; + return -ENODEV; } priv->buffer = devm_kzalloc(&hdev->dev, MAX_REPORT_LENGTH, GFP_KERNEL); - if (!priv->buffer) { - ret = -ENOMEM; - goto fail_and_close; - } + if (!priv->buffer) + return -ENOMEM; mutex_init(&priv->buffer_lock); mutex_init(&priv->z53_status_request_lock); @@ -948,7 +937,7 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id ret = kraken3_init_device(hdev); if (ret < 0) { hid_err(hdev, "device init failed with %d\n", ret); - goto fail_and_close; + return ret; } ret = kraken3_get_fw_ver(hdev); @@ -960,18 +949,12 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id if (IS_ERR(priv->hwmon_dev)) { ret = PTR_ERR(priv->hwmon_dev); hid_err(hdev, "hwmon registration failed with %d\n", ret); - goto fail_and_close; + return ret; } kraken3_debugfs_init(priv, device_name); return 0; - -fail_and_close: - hid_hw_close(hdev); -fail_and_stop: - hid_hw_stop(hdev); - return ret; } static void kraken3_remove(struct hid_device *hdev) @@ -980,9 +963,6 @@ static void kraken3_remove(struct hid_device *hdev) debugfs_remove_recursive(priv->debugfs); hwmon_device_unregister(priv->hwmon_dev); - - hid_hw_close(hdev); - hid_hw_stop(hdev); } static const struct hid_device_id kraken3_table[] = {