From patchwork Mon Jun 3 14:25:26 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: 10972959 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 E931814C0 for ; Mon, 3 Jun 2019 14:25:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D9527204FE for ; Mon, 3 Jun 2019 14:25:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D7A4A20501; Mon, 3 Jun 2019 14:25:31 +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 C3B5B27F88 for ; Mon, 3 Jun 2019 14:25:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729038AbfFCOZa (ORCPT ); Mon, 3 Jun 2019 10:25:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:60296 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727650AbfFCOZ3 (ORCPT ); Mon, 3 Jun 2019 10:25:29 -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 8A9C6276D9; Mon, 3 Jun 2019 14:25:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559571929; bh=+QIzxGsUhsEKFyL0nxTNvsmWYp4/6as/1NSx0KwKtRs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Qt9tpqH8wWIrAtw957J/FmI0t+O5nivCFBeQS6FjFK/uFeVdPPzzuhhaC8kqKjT2U K1Cg3UTV0bBA1o9IaLIoIHzJwDIZO+tNvGQgnq1AzpSoX5Dnkh1/svgHv6naOcJkVk 9xrRPkFS5XM+p48ob2rhQcyfFn7zh84HoSlKIv+0= Date: Mon, 3 Jun 2019 16:25:26 +0200 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: "Ed L. Cashin" , Jens Axboe , linux-block@vger.kernel.org Subject: [PATCH v2] block: aoe: no need to check return value of debugfs_create functions Message-ID: <20190603142526.GA17169@kroah.com> References: <20190122152151.16139-5-gregkh@linuxfoundation.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190122152151.16139-5-gregkh@linuxfoundation.org> User-Agent: Mutt/1.12.0 (2019-05-25) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@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: "Ed L. Cashin" Cc: Jens Axboe Cc: linux-block@vger.kernel.org Cc: Omar Sandoval Signed-off-by: Greg Kroah-Hartman --- v2: fix uninitialized entry issue found by Omar Sandoval drivers/block/aoe/aoeblk.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index e2c6aae2d636..bd19f8af950b 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -196,7 +196,6 @@ static const struct file_operations aoe_debugfs_fops = { static void aoedisk_add_debugfs(struct aoedev *d) { - struct dentry *entry; char *p; if (aoe_debugfs_dir == NULL) @@ -207,15 +206,8 @@ aoedisk_add_debugfs(struct aoedev *d) else p++; BUG_ON(*p == '\0'); - entry = debugfs_create_file(p, 0444, aoe_debugfs_dir, d, - &aoe_debugfs_fops); - if (IS_ERR_OR_NULL(entry)) { - pr_info("aoe: cannot create debugfs file for %s\n", - d->gd->disk_name); - return; - } - BUG_ON(d->debugfs); - d->debugfs = entry; + d->debugfs = debugfs_create_file(p, 0444, aoe_debugfs_dir, d, + &aoe_debugfs_fops); } void aoedisk_rm_debugfs(struct aoedev *d) @@ -472,10 +464,6 @@ aoeblk_init(void) if (buf_pool_cache == NULL) return -ENOMEM; aoe_debugfs_dir = debugfs_create_dir("aoe", NULL); - if (IS_ERR_OR_NULL(aoe_debugfs_dir)) { - pr_info("aoe: cannot create debugfs directory\n"); - aoe_debugfs_dir = NULL; - } return 0; }