From patchwork Wed Oct 10 05:13:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Ellerman X-Patchwork-Id: 981685 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 42VMnZ0w7Cz9sB7 for ; Wed, 10 Oct 2018 16:18:26 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 42VMnY6sBQzF2R7 for ; Wed, 10 Oct 2018 16:18:25 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42VMgv0mhRzF09n for ; Wed, 10 Oct 2018 16:13:31 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix) id 42VMgt6V49z9sC7; Wed, 10 Oct 2018 16:13:30 +1100 (AEDT) Delivered-To: linuxppc-dev@ozlabs.org Received: by ozlabs.org (Postfix, from userid 1034) id 42VMgt5SFBz9sCh; Wed, 10 Oct 2018 16:13:30 +1100 (AEDT) From: Michael Ellerman To: linuxppc-dev@ozlabs.org Subject: [PATCH 3/4] powerpc: Add -Wvla to arch CFLAGS Date: Wed, 10 Oct 2018 16:13:07 +1100 Message-Id: <20181010051308.25422-3-mpe@ellerman.id.au> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181010051308.25422-1-mpe@ellerman.id.au> References: <20181010051308.25422-1-mpe@ellerman.id.au> 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: maddy@linux.ibm.com, keescook@chromium.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Upstream has declared that Variable Length Array's (VLAs) are a bad idea, and eventually -Wvla will be added to the top-level Makefile. We can go one better and make sure we don't introduce any more by adding it to the arch Makefile. Signed-off-by: Michael Ellerman --- arch/powerpc/Kbuild | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild index 1625a06802ca..86b261d6bde5 100644 --- a/arch/powerpc/Kbuild +++ b/arch/powerpc/Kbuild @@ -1,4 +1,5 @@ -subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror +subdir-ccflags-y := $(call cc-option, -Wvla) +subdir-ccflags-$(CONFIG_PPC_WERROR) += -Werror obj-y += kernel/ obj-y += mm/