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,URIBL_BLOCKED,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 BF1FFC2D0A3 for ; Tue, 27 Oct 2020 00:12:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7908A20791 for ; Tue, 27 Oct 2020 00:12:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603757576; bh=ABhYRCy8GvmSsJk0IZvZEEcEhyjZSnGBoJJ1e4j2wfg=; h=From:To:Cc:Subject:Date:List-ID:From; b=Zhw1TeIY067Vwoa7978rJSEAm8AqiSo2whsyXdYqj5CTcSBusKvj7hRuzB4ArQakK v6iNNjEK6eJtx1Kpa4+jAL6gwnxKy//FnG4u8j73x9TvEnTKmpjQxO6HRDDr+k9Xyz tN8Ge0z8KB4nIQMK70p9M+c62hxDgXmWxxvd4sAI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411908AbgJ0AMJ (ORCPT ); Mon, 26 Oct 2020 20:12:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:32976 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2408478AbgJ0AL0 (ORCPT ); Mon, 26 Oct 2020 20:11:26 -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 E2182216FD; Tue, 27 Oct 2020 00:11:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603757485; bh=ABhYRCy8GvmSsJk0IZvZEEcEhyjZSnGBoJJ1e4j2wfg=; h=From:To:Cc:Subject:Date:From; b=kSOWYf/V7npr9qJxeMzaF3k8O6IQIzmwWdKLNlZ8u9T/Pf9VII4KsXiX9zDUM8x6/ uTKAYMdBHhe5TQTyr1KQ+ElFv72viZSfB9nqnWdarR9tZVKZMPKKzeFjKEE//mn/0l kvVz1V94kJmthZ27yp4bno1AeoPb2GMIz0BxvxY8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Oliver O'Halloran , Joel Stanley , Michael Ellerman , Sasha Levin , linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 4.4 01/25] powerpc/powernv/smp: Fix spurious DBG() warning Date: Mon, 26 Oct 2020 20:10:59 -0400 Message-Id: <20201027001123.1027642-1-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oliver O'Halloran [ Upstream commit f6bac19cf65c5be21d14a0c9684c8f560f2096dd ] When building with W=1 we get the following warning: arch/powerpc/platforms/powernv/smp.c: In function ‘pnv_smp_cpu_kill_self’: arch/powerpc/platforms/powernv/smp.c:276:16: error: suggest braces around empty body in an ‘if’ statement [-Werror=empty-body] 276 | cpu, srr1); | ^ cc1: all warnings being treated as errors The full context is this block: if (srr1 && !generic_check_cpu_restart(cpu)) DBG("CPU%d Unexpected exit while offline srr1=%lx!\n", cpu, srr1); When building with DEBUG undefined DBG() expands to nothing and GCC emits the warning due to the lack of braces around an empty statement. Signed-off-by: Oliver O'Halloran Reviewed-by: Joel Stanley Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200804005410.146094-2-oohall@gmail.com Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index ad7b1a3dbed09..c605c78a80896 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -41,7 +41,7 @@ #include #define DBG(fmt...) udbg_printf(fmt) #else -#define DBG(fmt...) +#define DBG(fmt...) do { } while (0) #endif static void pnv_smp_setup_cpu(int cpu) -- 2.25.1