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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9552C433F5 for ; Mon, 8 Nov 2021 10:16:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4EAA6120D for ; Mon, 8 Nov 2021 10:16:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236452AbhKHKTL (ORCPT ); Mon, 8 Nov 2021 05:19:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238632AbhKHKPg (ORCPT ); Mon, 8 Nov 2021 05:15:36 -0500 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72B46C06120C for ; Mon, 8 Nov 2021 02:12:32 -0800 (PST) Received: from zn.tnic (p200300ec2f33110088892b77bd117736.dip0.t-ipconnect.de [IPv6:2003:ec:2f33:1100:8889:2b77:bd11:7736]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 117821EC051F; Mon, 8 Nov 2021 11:12:31 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1636366351; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZrcRCvECKj7IKUT0HhuHkcjgG9gjdsthfkW1xcjqiQQ=; b=Bry7kjH/QPnC8+/1Xd35kNkpMnozd5dqVjBxpEJhFQos8IwQXvKbX5GfwlRbJOwjjNWHuN cy1YdUgsC+vuiCb5tv2y4EgPfGNdUovYo7RznunEwaImVg/xycVcfO6RgLRcz+j5NLy4aZ ttYPmlYm9OJYwZrmbpqI/hS5S/0F8RQ= From: Borislav Petkov To: LKML Cc: linux-arm-kernel@lists.infradead.org Subject: [PATCH v0 29/42] arm64: Check notifier registration return value Date: Mon, 8 Nov 2021 11:11:44 +0100 Message-Id: <20211108101157.15189-30-bp@alien8.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20211108101157.15189-1-bp@alien8.de> References: <20211108101157.15189-1-bp@alien8.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov Avoid homegrown notifier registration checks. No functional changes. Signed-off-by: Borislav Petkov Cc: linux-arm-kernel@lists.infradead.org --- arch/arm64/kernel/setup.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index be5f85b0a24d..e66af9de7cd7 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -440,8 +440,10 @@ static struct notifier_block arm64_panic_block = { static int __init register_arm64_panic_block(void) { - atomic_notifier_chain_register(&panic_notifier_list, - &arm64_panic_block); + if (atomic_notifier_chain_register(&panic_notifier_list, + &arm64_panic_block)) + pr_warn("Panic notifier already registered\n"); + return 0; } device_initcall(register_arm64_panic_block); -- 2.29.2