From patchwork Tue Sep 10 15:45:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 827147 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 6DA99199FDB; Tue, 10 Sep 2024 15:36:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725982623; cv=none; b=m1IVMpX1xdb/dxfhN/v/42P3PLvBK7Ll3Ed1tvfz98aEQFZfij+sVMyzax7UExcCK4+KT07WZoc8OnwLx0/yylJV7ICXwss8GEjJNrFd7oiFBwEbX1CszhuYVdvw7FaOXpq1oFf2k34u+81BnZRqkvOdigJhOjUz0z+fktw7D38= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725982623; c=relaxed/simple; bh=iTFC6Tib+y7aOz4hW2DQiNvumbaug4wygRwoOqlsx3A=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nK28td37g2c88+D86b3PfaduHh6K2wuBzolczs7ygrPVXzBKlKBmg2kaBJuTrTdoCOymhg0gNQIGh1J8t5O21GLQLJDZx01gyznnLxDVS8DW72NdwTw9n5bfsxBDLEVXIFW1oDPVWJiw+cF7q6PbSi5Fz+9MMbUdFanI1ZcHcNY= 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=45.249.212.191 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 [172.19.163.17]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4X378s0LRyz1j8Md; Tue, 10 Sep 2024 23:36:29 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id 2E95A1A0188; Tue, 10 Sep 2024 23:36:57 +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; Tue, 10 Sep 2024 23:36:46 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , CC: , , , Subject: [PATCH -next v3 12/15] hwmon: (gigabyte_waterforce) Use devm_hid_hw_start_and_open in waterforce_probe() Date: Tue, 10 Sep 2024 23:45:42 +0800 Message-ID: <20240910154545.736786-13-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240910154545.736786-1-lizetao1@huawei.com> References: <20240910154545.736786-1-lizetao1@huawei.com> Precedence: bulk X-Mailing-List: linux-input@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 waterforce module needs to maintain hid resources by itself. Use 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. Reviewed-by: Aleksa Savic Acked-by: Guenter Roeck Signed-off-by: Li Zetao --- v2 -> v3: None v2: https://lore.kernel.org/all/20240909012313.500341-13-lizetao1@huawei.com/ v1 -> v2: Adjust commit information v1: https://lore.kernel.org/all/20240904123607.3407364-16-lizetao1@huawei.com/ drivers/hwmon/gigabyte_waterforce.c | 29 +++++------------------------ 1 file changed, 5 insertions(+), 24 deletions(-) diff --git a/drivers/hwmon/gigabyte_waterforce.c b/drivers/hwmon/gigabyte_waterforce.c index 8129d7b3ceaf..9052d1c3d5aa 100644 --- a/drivers/hwmon/gigabyte_waterforce.c +++ b/drivers/hwmon/gigabyte_waterforce.c @@ -337,23 +337,13 @@ static int waterforce_probe(struct hid_device *hdev, const struct hid_device_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; - } 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->status_report_request_mutex); mutex_init(&priv->buffer_lock); @@ -371,18 +361,12 @@ static int waterforce_probe(struct hid_device *hdev, const struct hid_device_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; } waterforce_debugfs_init(priv); return 0; - -fail_and_close: - hid_hw_close(hdev); -fail_and_stop: - hid_hw_stop(hdev); - return ret; } static void waterforce_remove(struct hid_device *hdev) @@ -391,9 +375,6 @@ static void waterforce_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 waterforce_table[] = {