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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,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 3FD4FC35250 for ; Sun, 9 Feb 2020 13:08:15 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E649120714 for ; Sun, 9 Feb 2020 13:08:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="LhQ9KwU6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E649120714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48Fq8r4gCvzDqPS for ; Mon, 10 Feb 2020 00:08:12 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linuxfoundation.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=gregkh@linuxfoundation.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=LhQ9KwU6; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48FpvY3YW6zDqM7 for ; Sun, 9 Feb 2020 23:56:41 +1100 (AEDT) Received: from localhost (unknown [38.98.37.135]) (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 7CAD920733; Sun, 9 Feb 2020 12:56:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581252999; bh=UzFJVOYPOVgXmoTrDrMUaZer8nC8kfZFkwknGpfqs1I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LhQ9KwU6fGCTULt/7XZhHCoUrOzlIM7eMTU729gLOaiSMegw4FwVUufLZSL4WbD76 aY/eyGG2Xo8Y4X9FcDgunhxQo8HeC9vr3V0dEQ48wxPVuC1kfULpmRW0nmEB+8x5Lk w4sveno6NnMei9TbyD/26Opae/+G7KaXaeJJWIQI= From: Greg Kroah-Hartman To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 4/6] powerpc: mm: ptdump: no need to check return value of debugfs_create functions Date: Sun, 9 Feb 2020 11:58:59 +0100 Message-Id: <20200209105901.1620958-4-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200209105901.1620958-1-gregkh@linuxfoundation.org> References: <20200209105901.1620958-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, Paul Mackerras , Greg Kroah-Hartman Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Christophe Leroy Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/mm/ptdump/bats.c | 8 +++----- arch/powerpc/mm/ptdump/hashpagetable.c | 7 ++----- arch/powerpc/mm/ptdump/ptdump.c | 8 +++----- arch/powerpc/mm/ptdump/segment_regs.c | 8 +++----- 4 files changed, 11 insertions(+), 20 deletions(-) diff --git a/arch/powerpc/mm/ptdump/bats.c b/arch/powerpc/mm/ptdump/bats.c index 4154feac1da3..d3a5d6b318d1 100644 --- a/arch/powerpc/mm/ptdump/bats.c +++ b/arch/powerpc/mm/ptdump/bats.c @@ -164,10 +164,8 @@ static const struct file_operations bats_fops = { static int __init bats_init(void) { - struct dentry *debugfs_file; - - debugfs_file = debugfs_create_file("block_address_translation", 0400, - powerpc_debugfs_root, NULL, &bats_fops); - return debugfs_file ? 0 : -ENOMEM; + debugfs_create_file("block_address_translation", 0400, + powerpc_debugfs_root, NULL, &bats_fops); + return 0; } device_initcall(bats_init); diff --git a/arch/powerpc/mm/ptdump/hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c index a07278027c6f..b6ed9578382f 100644 --- a/arch/powerpc/mm/ptdump/hashpagetable.c +++ b/arch/powerpc/mm/ptdump/hashpagetable.c @@ -527,13 +527,10 @@ static const struct file_operations ptdump_fops = { static int ptdump_init(void) { - struct dentry *debugfs_file; - if (!radix_enabled()) { populate_markers(); - debugfs_file = debugfs_create_file("kernel_hash_pagetable", - 0400, NULL, NULL, &ptdump_fops); - return debugfs_file ? 0 : -ENOMEM; + debugfs_create_file("kernel_hash_pagetable", 0400, NULL, NULL, + &ptdump_fops); } return 0; } diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c index 206156255247..d92bb8ea229c 100644 --- a/arch/powerpc/mm/ptdump/ptdump.c +++ b/arch/powerpc/mm/ptdump/ptdump.c @@ -417,12 +417,10 @@ void ptdump_check_wx(void) static int ptdump_init(void) { - struct dentry *debugfs_file; - populate_markers(); build_pgtable_complete_mask(); - debugfs_file = debugfs_create_file("kernel_page_tables", 0400, NULL, - NULL, &ptdump_fops); - return debugfs_file ? 0 : -ENOMEM; + debugfs_create_file("kernel_page_tables", 0400, NULL, NULL, + &ptdump_fops); + return 0; } device_initcall(ptdump_init); diff --git a/arch/powerpc/mm/ptdump/segment_regs.c b/arch/powerpc/mm/ptdump/segment_regs.c index 501843664bb9..dde2fe8de4b2 100644 --- a/arch/powerpc/mm/ptdump/segment_regs.c +++ b/arch/powerpc/mm/ptdump/segment_regs.c @@ -55,10 +55,8 @@ static const struct file_operations sr_fops = { static int __init sr_init(void) { - struct dentry *debugfs_file; - - debugfs_file = debugfs_create_file("segment_registers", 0400, - powerpc_debugfs_root, NULL, &sr_fops); - return debugfs_file ? 0 : -ENOMEM; + debugfs_create_file("segment_registers", 0400, powerpc_debugfs_root, + NULL, &sr_fops); + return 0; } device_initcall(sr_init); -- 2.25.0