From patchwork Tue Aug 6 16:11:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11079307 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 59DFF746 for ; Tue, 6 Aug 2019 16:12:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 46EC628876 for ; Tue, 6 Aug 2019 16:12:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3A2B7288BB; Tue, 6 Aug 2019 16:12:08 +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 7B3C728876 for ; Tue, 6 Aug 2019 16:12:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387785AbfHFQMD (ORCPT ); Tue, 6 Aug 2019 12:12:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:50332 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387815AbfHFQMA (ORCPT ); Tue, 6 Aug 2019 12:12:00 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 0571B20679; Tue, 6 Aug 2019 16:11:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565107919; bh=eq+if6Q2B7ACvzTv9VH4/ZCan69wx3OKbqF9Edvzm1A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N23zewM+uIscSNgcJADJVzs2dhPBfZfk+kNhZ+YGLTnl6mvG9SkDBymL9hbkXfF78 TlRJfpUiSOKFlztEoshOjfbOE5R+nz0H87KSF5mDD+1kzHKVaNShd2A3aPwj33j2iJ W1SYIYuv2XHpwKwLJVKNAAvCg6VZIbIVRzxcEgDw= From: Greg Kroah-Hartman To: netdev@vger.kernel.org Cc: Greg Kroah-Hartman , Michael Hennerich , Alexander Aring , Stefan Schmidt , "David S. Miller" , Harry Morris , linux-wpan@vger.kernel.org Subject: [PATCH 17/17] ieee802154: no need to check return value of debugfs_create functions Date: Tue, 6 Aug 2019 18:11:28 +0200 Message-Id: <20190806161128.31232-18-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190806161128.31232-1-gregkh@linuxfoundation.org> References: <20190806161128.31232-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 Sender: linux-wpan-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wpan@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: Michael Hennerich Cc: Alexander Aring Cc: Stefan Schmidt Cc: "David S. Miller" Cc: Harry Morris Cc: linux-wpan@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Acked-by: Stefan Schmidt --- drivers/net/ieee802154/adf7242.c | 12 +++--------- drivers/net/ieee802154/at86rf230.c | 20 +++++--------------- drivers/net/ieee802154/ca8210.c | 9 +-------- 3 files changed, 9 insertions(+), 32 deletions(-) diff --git a/drivers/net/ieee802154/adf7242.c b/drivers/net/ieee802154/adf7242.c index c9392d70e639..7b95add2235a 100644 --- a/drivers/net/ieee802154/adf7242.c +++ b/drivers/net/ieee802154/adf7242.c @@ -1158,7 +1158,7 @@ static int adf7242_stats_show(struct seq_file *file, void *offset) return 0; } -static int adf7242_debugfs_init(struct adf7242_local *lp) +static void adf7242_debugfs_init(struct adf7242_local *lp) { char debugfs_dir_name[DNAME_INLINE_LEN + 1] = "adf7242-"; struct dentry *stats; @@ -1166,15 +1166,9 @@ static int adf7242_debugfs_init(struct adf7242_local *lp) strncat(debugfs_dir_name, dev_name(&lp->spi->dev), DNAME_INLINE_LEN); lp->debugfs_root = debugfs_create_dir(debugfs_dir_name, NULL); - if (IS_ERR_OR_NULL(lp->debugfs_root)) - return PTR_ERR_OR_ZERO(lp->debugfs_root); - stats = debugfs_create_devm_seqfile(&lp->spi->dev, "status", - lp->debugfs_root, - adf7242_stats_show); - return PTR_ERR_OR_ZERO(stats); - - return 0; + debugfs_create_devm_seqfile(&lp->spi->dev, "status", lp->debugfs_root, + adf7242_stats_show); } static const s32 adf7242_powers[] = { diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index 595cf7e2a651..7d67f41387f5 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -1626,24 +1626,16 @@ static int at86rf230_stats_show(struct seq_file *file, void *offset) } DEFINE_SHOW_ATTRIBUTE(at86rf230_stats); -static int at86rf230_debugfs_init(struct at86rf230_local *lp) +static void at86rf230_debugfs_init(struct at86rf230_local *lp) { char debugfs_dir_name[DNAME_INLINE_LEN + 1] = "at86rf230-"; - struct dentry *stats; strncat(debugfs_dir_name, dev_name(&lp->spi->dev), DNAME_INLINE_LEN); at86rf230_debugfs_root = debugfs_create_dir(debugfs_dir_name, NULL); - if (!at86rf230_debugfs_root) - return -ENOMEM; - - stats = debugfs_create_file("trac_stats", 0444, - at86rf230_debugfs_root, lp, - &at86rf230_stats_fops); - if (!stats) - return -ENOMEM; - return 0; + debugfs_create_file("trac_stats", 0444, at86rf230_debugfs_root, lp, + &at86rf230_stats_fops); } static void at86rf230_debugfs_remove(void) @@ -1651,7 +1643,7 @@ static void at86rf230_debugfs_remove(void) debugfs_remove_recursive(at86rf230_debugfs_root); } #else -static int at86rf230_debugfs_init(struct at86rf230_local *lp) { return 0; } +static void at86rf230_debugfs_init(struct at86rf230_local *lp) { } static void at86rf230_debugfs_remove(void) { } #endif @@ -1751,9 +1743,7 @@ static int at86rf230_probe(struct spi_device *spi) /* going into sleep by default */ at86rf230_sleep(lp); - rc = at86rf230_debugfs_init(lp); - if (rc) - goto free_dev; + at86rf230_debugfs_init(lp); rc = ieee802154_register_hw(lp->hw); if (rc) diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c index b188fce3f641..11402dc347db 100644 --- a/drivers/net/ieee802154/ca8210.c +++ b/drivers/net/ieee802154/ca8210.c @@ -3019,14 +3019,7 @@ static int ca8210_test_interface_init(struct ca8210_priv *priv) priv, &test_int_fops ); - if (IS_ERR(test->ca8210_dfs_spi_int)) { - dev_err( - &priv->spi->dev, - "Error %ld when creating debugfs node\n", - PTR_ERR(test->ca8210_dfs_spi_int) - ); - return PTR_ERR(test->ca8210_dfs_spi_int); - } + debugfs_create_symlink("ca8210", NULL, node_name); init_waitqueue_head(&test->readq); return kfifo_alloc(