From patchwork Tue Jan 22 15:21:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 10775803 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2A7881390 for ; Tue, 22 Jan 2019 15:28:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 19A982A2FA for ; Tue, 22 Jan 2019 15:28:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0E0082AEB1; Tue, 22 Jan 2019 15:28:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 813312A2FA for ; Tue, 22 Jan 2019 15:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729585AbfAVPWa (ORCPT ); Tue, 22 Jan 2019 10:22:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:34644 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729244AbfAVPWa (ORCPT ); Tue, 22 Jan 2019 10:22:30 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6430E217D4; Tue, 22 Jan 2019 15:22:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548170548; bh=vJt3fJtaSvAhSbSKziKYEFt4JWMeK///oumcWnn9Uhs=; h=From:To:Cc:Subject:Date:From; b=XRl/HRFPoeZ1nonjHkieZYOdVgfG/cAY7HVqISRCOJor5QQWPxOkzyCATB3Ph01L0 XJ/sGqpRF/apYKnypLZK0N9bjciw/4HOcCNtN6RVqO+BEIehIQsDPSXEkXdAy9BG2V HciqLp0LrZPk6CoCdvoRJ9gIAP2zV3Ff/Ifqv5J8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , Stanislaw Gruszka , Kalle Valo , linux-wireless@vger.kernel.org Subject: [PATCH] iwlegacy: no need to check return value of debugfs_create functions Date: Tue, 22 Jan 2019 16:21:18 +0100 Message-Id: <20190122152151.16139-19-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Stanislaw Gruszka Cc: Kalle Valo Cc: linux-wireless@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Acked-by: Stanislaw Gruszka --- .../net/wireless/intel/iwlegacy/3945-mac.c | 5 +-- .../net/wireless/intel/iwlegacy/4965-mac.c | 5 +-- drivers/net/wireless/intel/iwlegacy/common.h | 6 ++-- drivers/net/wireless/intel/iwlegacy/debug.c | 34 +++---------------- 4 files changed, 8 insertions(+), 42 deletions(-) diff --git a/drivers/net/wireless/intel/iwlegacy/3945-mac.c b/drivers/net/wireless/intel/iwlegacy/3945-mac.c index 57e3b6cca234..271977f7fbb0 100644 --- a/drivers/net/wireless/intel/iwlegacy/3945-mac.c +++ b/drivers/net/wireless/intel/iwlegacy/3945-mac.c @@ -3756,10 +3756,7 @@ il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) goto out_remove_sysfs; - err = il_dbgfs_register(il, DRV_NAME); - if (err) - IL_ERR("failed to create debugfs files. Ignoring error: %d\n", - err); + il_dbgfs_register(il, DRV_NAME); /* Start monitoring the killswitch */ queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ); diff --git a/drivers/net/wireless/intel/iwlegacy/4965-mac.c b/drivers/net/wireless/intel/iwlegacy/4965-mac.c index 6b4488a178a7..94222ae464ae 100644 --- a/drivers/net/wireless/intel/iwlegacy/4965-mac.c +++ b/drivers/net/wireless/intel/iwlegacy/4965-mac.c @@ -4988,10 +4988,7 @@ il4965_ucode_callback(const struct firmware *ucode_raw, void *context) if (err) goto out_unbind; - err = il_dbgfs_register(il, DRV_NAME); - if (err) - IL_ERR("failed to create debugfs files. Ignoring error: %d\n", - err); + il_dbgfs_register(il, DRV_NAME); err = sysfs_create_group(&il->pci_dev->dev.kobj, &il_attribute_group); if (err) { diff --git a/drivers/net/wireless/intel/iwlegacy/common.h b/drivers/net/wireless/intel/iwlegacy/common.h index dc6a74a05983..b079c64ca014 100644 --- a/drivers/net/wireless/intel/iwlegacy/common.h +++ b/drivers/net/wireless/intel/iwlegacy/common.h @@ -2974,13 +2974,11 @@ il_print_hex_dump(struct il_priv *il, int level, const void *p, u32 len) #endif /* CONFIG_IWLEGACY_DEBUG */ #ifdef CONFIG_IWLEGACY_DEBUGFS -int il_dbgfs_register(struct il_priv *il, const char *name); +void il_dbgfs_register(struct il_priv *il, const char *name); void il_dbgfs_unregister(struct il_priv *il); #else -static inline int -il_dbgfs_register(struct il_priv *il, const char *name) +static inline void il_dbgfs_register(struct il_priv *il, const char *name) { - return 0; } static inline void diff --git a/drivers/net/wireless/intel/iwlegacy/debug.c b/drivers/net/wireless/intel/iwlegacy/debug.c index d76073def677..fa211412e0ac 100644 --- a/drivers/net/wireless/intel/iwlegacy/debug.c +++ b/drivers/net/wireless/intel/iwlegacy/debug.c @@ -128,23 +128,12 @@ EXPORT_SYMBOL(il_update_stats); /* create and remove of files */ #define DEBUGFS_ADD_FILE(name, parent, mode) do { \ - if (!debugfs_create_file(#name, mode, parent, il, \ - &il_dbgfs_##name##_ops)) \ - goto err; \ + debugfs_create_file(#name, mode, parent, il, \ + &il_dbgfs_##name##_ops); \ } while (0) #define DEBUGFS_ADD_BOOL(name, parent, ptr) do { \ - struct dentry *__tmp; \ - __tmp = debugfs_create_bool(#name, 0600, parent, ptr); \ - if (IS_ERR(__tmp) || !__tmp) \ - goto err; \ -} while (0) - -#define DEBUGFS_ADD_X32(name, parent, ptr) do { \ - struct dentry *__tmp; \ - __tmp = debugfs_create_x32(#name, 0600, parent, ptr); \ - if (IS_ERR(__tmp) || !__tmp) \ - goto err; \ + debugfs_create_bool(#name, 0600, parent, ptr); \ } while (0) /* file operation */ @@ -1341,27 +1330,18 @@ DEBUGFS_WRITE_FILE_OPS(wd_timeout); * Create the debugfs files and directories * */ -int +void il_dbgfs_register(struct il_priv *il, const char *name) { struct dentry *phyd = il->hw->wiphy->debugfsdir; struct dentry *dir_drv, *dir_data, *dir_rf, *dir_debug; dir_drv = debugfs_create_dir(name, phyd); - if (!dir_drv) - return -ENOMEM; - il->debugfs_dir = dir_drv; dir_data = debugfs_create_dir("data", dir_drv); - if (!dir_data) - goto err; dir_rf = debugfs_create_dir("rf", dir_drv); - if (!dir_rf) - goto err; dir_debug = debugfs_create_dir("debug", dir_drv); - if (!dir_debug) - goto err; DEBUGFS_ADD_FILE(nvm, dir_data, 0400); DEBUGFS_ADD_FILE(sram, dir_data, 0600); @@ -1399,12 +1379,6 @@ il_dbgfs_register(struct il_priv *il, const char *name) DEBUGFS_ADD_BOOL(disable_chain_noise, dir_rf, &il->disable_chain_noise_cal); DEBUGFS_ADD_BOOL(disable_tx_power, dir_rf, &il->disable_tx_power_cal); - return 0; - -err: - IL_ERR("Can't create the debugfs directory\n"); - il_dbgfs_unregister(il); - return -ENOMEM; } EXPORT_SYMBOL(il_dbgfs_register);