From patchwork Wed Jun 12 12:12:55 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: 10989757 X-Patchwork-Delegate: andy.shevchenko@gmail.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 BE3951708 for ; Wed, 12 Jun 2019 12:13:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ABE58289A7 for ; Wed, 12 Jun 2019 12:13:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A072328A1B; Wed, 12 Jun 2019 12:13:40 +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 2CCF028A19 for ; Wed, 12 Jun 2019 12:13:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730924AbfFLMNX (ORCPT ); Wed, 12 Jun 2019 08:13:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:53562 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727584AbfFLMNX (ORCPT ); Wed, 12 Jun 2019 08:13:23 -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 4C286208CA; Wed, 12 Jun 2019 12:13:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560341601; bh=s7t54JWbBuNtEvtmX8/LDytHT2xfujJQNzLt26RSLK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bpv41V0nZjIAJGFvc7NA4lGDoD2jotV0pKMKdLkbDoKvwAbdC+dDy7tx+ZGCwBmgg SjZVtWp2xpmn2nrLHllnPjEcxhgXi6aHs7JFxBLdvxrjJjD8e2k4sD+cM9MOTqhme6 m2fDURwhnGvWvxPkDME2wqzoFREMV9jobEbkoj8c= From: Greg Kroah-Hartman To: dvhart@infradead.org, andy@infradead.org Cc: Greg Kroah-Hartman , Corentin Chary , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/8] platform: x86: samsung-laptop: no need to check return value of debugfs_create functions Date: Wed, 12 Jun 2019 14:12:55 +0200 Message-Id: <20190612121258.19535-5-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190612121258.19535-1-gregkh@linuxfoundation.org> References: <20190612121258.19535-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@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: Corentin Chary Cc: Darren Hart Cc: Andy Shevchenko Cc: platform-driver-x86@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/samsung-laptop.c | 89 +++++++-------------------- 1 file changed, 23 insertions(+), 66 deletions(-) diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c index 7b160ee98115..e84f11398c1b 100644 --- a/drivers/platform/x86/samsung-laptop.c +++ b/drivers/platform/x86/samsung-laptop.c @@ -1280,15 +1280,12 @@ static void samsung_debugfs_exit(struct samsung_laptop *samsung) debugfs_remove_recursive(samsung->debug.root); } -static int samsung_debugfs_init(struct samsung_laptop *samsung) +static void samsung_debugfs_init(struct samsung_laptop *samsung) { - struct dentry *dent; + struct dentry *root; - samsung->debug.root = debugfs_create_dir("samsung-laptop", NULL); - if (!samsung->debug.root) { - pr_err("failed to create debugfs directory"); - goto error_debugfs; - } + root = debugfs_create_dir("samsung-laptop", NULL); + samsung->debug.root = root; samsung->debug.f0000_wrapper.data = samsung->f0000_segment; samsung->debug.f0000_wrapper.size = 0xffff; @@ -1299,60 +1296,24 @@ static int samsung_debugfs_init(struct samsung_laptop *samsung) samsung->debug.sdiag_wrapper.data = samsung->sdiag; samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag); - dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR, - samsung->debug.root, &samsung->debug.command); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_u32("d0", S_IRUGO | S_IWUSR, samsung->debug.root, - &samsung->debug.data.d0); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_u32("d1", S_IRUGO | S_IWUSR, samsung->debug.root, - &samsung->debug.data.d1); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_u16("d2", S_IRUGO | S_IWUSR, samsung->debug.root, - &samsung->debug.data.d2); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_u8("d3", S_IRUGO | S_IWUSR, samsung->debug.root, - &samsung->debug.data.d3); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_blob("data", S_IRUGO | S_IWUSR, - samsung->debug.root, - &samsung->debug.data_wrapper); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, - samsung->debug.root, - &samsung->debug.f0000_wrapper); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_file("call", S_IFREG | S_IRUGO, - samsung->debug.root, samsung, - &samsung_laptop_call_fops); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, - samsung->debug.root, - &samsung->debug.sdiag_wrapper); - if (!dent) - goto error_debugfs; - - return 0; - -error_debugfs: - samsung_debugfs_exit(samsung); - return -ENOMEM; + debugfs_create_u16("command", S_IRUGO | S_IWUSR, root, + &samsung->debug.command); + debugfs_create_u32("d0", S_IRUGO | S_IWUSR, root, + &samsung->debug.data.d0); + debugfs_create_u32("d1", S_IRUGO | S_IWUSR, root, + &samsung->debug.data.d1); + debugfs_create_u16("d2", S_IRUGO | S_IWUSR, root, + &samsung->debug.data.d2); + debugfs_create_u8("d3", S_IRUGO | S_IWUSR, root, + &samsung->debug.data.d3); + debugfs_create_blob("data", S_IRUGO | S_IWUSR, root, + &samsung->debug.data_wrapper); + debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, root, + &samsung->debug.f0000_wrapper); + debugfs_create_file("call", S_IFREG | S_IRUGO, root, samsung, + &samsung_laptop_call_fops); + debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, root, + &samsung->debug.sdiag_wrapper); } static void samsung_sabi_exit(struct samsung_laptop *samsung) @@ -1745,9 +1706,7 @@ static int __init samsung_init(void) if (ret) goto error_lid_handling; - ret = samsung_debugfs_init(samsung); - if (ret) - goto error_debugfs; + samsung_debugfs_init(samsung); samsung->pm_nb.notifier_call = samsung_pm_notification; register_pm_notifier(&samsung->pm_nb); @@ -1755,8 +1714,6 @@ static int __init samsung_init(void) samsung_platform_device = samsung->platform_device; return ret; -error_debugfs: - samsung_lid_handling_exit(samsung); error_lid_handling: samsung_leds_exit(samsung); error_leds: