From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E36FEC2D0A3 for ; Mon, 26 Oct 2020 23:57:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A188020B1F for ; Mon, 26 Oct 2020 23:57:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603756639; bh=kd0qtsTL/yjny6uoK+nnI+suwxWpkxoeEUgDooWUgqU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QUmE4Fywo6Wp/a1aMyDlccHdutYmBv8dzCXjOoXsfAHaVc1gt5jHpeHLUF1SxFuh+ 02Q7JZ3IFjqPYKUCdzWag/iVj0RSAd5IJ76/L0oneTfKxY3QBwO5I54GQjFO3pXzRM MRTUetF25KDr/nWKos5M1OO0smbRs5hcxbIgPYIo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2436737AbgJZX5S (ORCPT ); Mon, 26 Oct 2020 19:57:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:60636 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2410300AbgJZXyi (ORCPT ); Mon, 26 Oct 2020 19:54:38 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0296321655; Mon, 26 Oct 2020 23:54:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603756477; bh=kd0qtsTL/yjny6uoK+nnI+suwxWpkxoeEUgDooWUgqU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TPdexZ62HSv92C/Yp1EiPe3mb6HzSLuUAftxOVRcwZ0BCDohSdw0D/rYUVlvNfSXL azUvAZDGuJ6duFCgpTOR5cg4qmOl+ePKRAx66CpS4KuRsHiUeJF8h0aYWeTXvDhIfA n8+1wjRBmmxhbP1v5L9edAiPKfifwwZCFIfuOa0E= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dan Carpenter , Santosh Shilimkar , Krzysztof Kozlowski , Sasha Levin Subject: [PATCH AUTOSEL 5.8 122/132] memory: emif: Remove bogus debugfs error handling Date: Mon, 26 Oct 2020 19:51:54 -0400 Message-Id: <20201026235205.1023962-122-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201026235205.1023962-1-sashal@kernel.org> References: <20201026235205.1023962-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dan Carpenter [ Upstream commit fd22781648080cc400772b3c68aa6b059d2d5420 ] Callers are generally not supposed to check the return values from debugfs functions. Debugfs functions never return NULL so this error handling will never trigger. (Historically debugfs functions used to return a mix of NULL and error pointers but it was eventually deemed too complicated for something which wasn't intended to be used in normal situations). Delete all the error handling. Signed-off-by: Dan Carpenter Acked-by: Santosh Shilimkar Link: https://lore.kernel.org/r/20200826113759.GF393664@mwanda Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- drivers/memory/emif.c | 33 +++++---------------------------- 1 file changed, 5 insertions(+), 28 deletions(-) diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c index 9d9127bf2a590..74d69c761cfca 100644 --- a/drivers/memory/emif.c +++ b/drivers/memory/emif.c @@ -163,35 +163,12 @@ static const struct file_operations emif_mr4_fops = { static int __init_or_module emif_debugfs_init(struct emif_data *emif) { - struct dentry *dentry; - int ret; - - dentry = debugfs_create_dir(dev_name(emif->dev), NULL); - if (!dentry) { - ret = -ENOMEM; - goto err0; - } - emif->debugfs_root = dentry; - - dentry = debugfs_create_file("regcache_dump", S_IRUGO, - emif->debugfs_root, emif, &emif_regdump_fops); - if (!dentry) { - ret = -ENOMEM; - goto err1; - } - - dentry = debugfs_create_file("mr4", S_IRUGO, - emif->debugfs_root, emif, &emif_mr4_fops); - if (!dentry) { - ret = -ENOMEM; - goto err1; - } - + emif->debugfs_root = debugfs_create_dir(dev_name(emif->dev), NULL); + debugfs_create_file("regcache_dump", S_IRUGO, emif->debugfs_root, emif, + &emif_regdump_fops); + debugfs_create_file("mr4", S_IRUGO, emif->debugfs_root, emif, + &emif_mr4_fops); return 0; -err1: - debugfs_remove_recursive(emif->debugfs_root); -err0: - return ret; } static void __exit emif_debugfs_exit(struct emif_data *emif) -- 2.25.1