From patchwork Sun Sep 3 03:02:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13373167 X-Patchwork-Delegate: miriam.rachel.korenblit@intel.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF202C83F2C for ; Sun, 3 Sep 2023 03:02:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235608AbjICDCj (ORCPT ); Sat, 2 Sep 2023 23:02:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232539AbjICDCi (ORCPT ); Sat, 2 Sep 2023 23:02:38 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 395DB110 for ; Sat, 2 Sep 2023 20:02:35 -0700 (PDT) Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Rdc346M7BzrS4M; Sun, 3 Sep 2023 11:00:48 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Sun, 3 Sep 2023 11:02:32 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH wireless-next v2 1/3] wifi: iwlwifi: mei: Drop unnecessary error check for debugfs_create_dir() Date: Sun, 3 Sep 2023 11:02:14 +0800 Message-ID: <20230903030216.1509013-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230903030216.1509013-1-ruanjinjie@huawei.com> References: <20230903030216.1509013-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org debugfs_create_dir() returns ERR_PTR and never return NULL. As Russell suggested, this patch removes the error checking for debugfs_create_dir(). This is because the DebugFS kernel API is developed in a way that the caller can safely ignore the errors that occur during the creation of DebugFS nodes. The debugfs APIs have a IS_ERR() judge in start_creating() which can handle it gracefully. So these checks are unnecessary. Fixes: 4ea7da5fad43 ("iwlwifi: mei: add debugfs hooks") Signed-off-by: Jinjie Ruan Suggested-by: Russell King (Oracle) --- v2: - Remove the err check instead of using IS_ERR to replace NULL check. - Update the commit message and title. --- drivers/net/wireless/intel/iwlwifi/mei/main.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c index 1dd9106c6513..3e25c78a8d58 100644 --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c @@ -1894,9 +1894,6 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei) { mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!mei->dbgfs_dir) - return; - debugfs_create_ulong("status", S_IRUSR, mei->dbgfs_dir, &iwl_mei_status); debugfs_create_file("send_start_message", S_IWUSR, mei->dbgfs_dir,