From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752030AbeBYR1L (ORCPT ); Sun, 25 Feb 2018 12:27:11 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:50217 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751855AbeBYRW7 (ORCPT ); Sun, 25 Feb 2018 12:22:59 -0500 X-Google-Smtp-Source: AG47ELt/sxJbmhBM3MoqNIKJoXtjQM65SU2Ku9GAz8Oh0MxwFqvXMWyZEtDMZ3wCCgIFs09evQkNnA== From: Mathieu Malaterre To: Michael Ellerman Cc: Benjamin Herrenschmidt , Paul Mackerras , Jiri Slaby , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Mathieu Malaterre Subject: [PATCH 04/21] powerpc: Mark both tmp variables as unused Date: Sun, 25 Feb 2018 18:22:19 +0100 Message-Id: <20180225172236.29650-5-malat@debian.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180225172236.29650-1-malat@debian.org> References: <20180225172236.29650-1-malat@debian.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since the value of `tmp` is never intended to be read, declare both `tmp` variables as unused. Fix warning (treated as error in W=1): CC arch/powerpc/kernel/signal_32.o arch/powerpc/kernel/signal_32.c: In function ‘sys_swapcontext’: arch/powerpc/kernel/signal_32.c:1048:16: error: variable ‘tmp’ set but not used [-Werror=unused-but-set-variable] unsigned char tmp; ^~~ arch/powerpc/kernel/signal_32.c: In function ‘sys_debug_setcontext’: arch/powerpc/kernel/signal_32.c:1234:16: error: variable ‘tmp’ set but not used [-Werror=unused-but-set-variable] unsigned char tmp; ^~~ cc1: all warnings being treated as errors Signed-off-by: Mathieu Malaterre --- arch/powerpc/kernel/signal_32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index a46de0035214..492f03451877 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -1045,7 +1045,7 @@ long sys_swapcontext(struct ucontext __user *old_ctx, struct ucontext __user *new_ctx, int ctx_size, int r6, int r7, int r8, struct pt_regs *regs) { - unsigned char tmp; + unsigned char tmp __maybe_unused; int ctx_has_vsx_region = 0; #ifdef CONFIG_PPC64 @@ -1231,7 +1231,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx, { struct sig_dbg_op op; int i; - unsigned char tmp; + unsigned char tmp __maybe_unused; unsigned long new_msr = regs->msr; #ifdef CONFIG_PPC_ADV_DEBUG_REGS unsigned long new_dbcr0 = current->thread.debug.dbcr0; -- 2.11.0