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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0F800C432C0 for ; Wed, 27 Nov 2019 20:44:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DABDA21780 for ; Wed, 27 Nov 2019 20:44:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574887452; bh=GnvoePJDb/EgHDx1xW5xhESP3HsVbSoTADQMojtsNyw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1a9jM/KPzvbJdjLbeAFf+6LmYrQYDSwHsoHTHh/mRdOWiDEkGtoJQrJgPgiD/Kd6I QGsk8sYE0TXqsYjKWvspXEEURF2Ls1cWGi/iASggSeTelby7jg06GAKRDutMgPMP9q 3QErwuT22QdeGMQpbDDg1U3ENtGuQse3nddnxnH0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728521AbfK0UoL (ORCPT ); Wed, 27 Nov 2019 15:44:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:53006 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729552AbfK0UoJ (ORCPT ); Wed, 27 Nov 2019 15:44:09 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 92FDB21775; Wed, 27 Nov 2019 20:44:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574887449; bh=GnvoePJDb/EgHDx1xW5xhESP3HsVbSoTADQMojtsNyw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EkUP2h8Np6suni7gZhM4qvsyiuZTQSytbcU9Limcy9WtOPj5HuCRwgqG5Jdid+O30 yLSdqR9xU4trl1zuXTDtTxT7vk5LhPFrhdku5NoAnBAZ1936prEgBY4lvsB7Jtmsbe e6sXcArV8+meZOsA1qJYDBIKJIh0HbRRDuvuTaXc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "David S. Miller" , Sasha Levin Subject: [PATCH 4.9 063/151] sparc64: Rework xchg() definition to avoid warnings. Date: Wed, 27 Nov 2019 21:30:46 +0100 Message-Id: <20191127203033.434768326@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127203000.773542911@linuxfoundation.org> References: <20191127203000.773542911@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David S. Miller [ Upstream commit 6c2fc9cddc1ffdef8ada1dc8404e5affae849953 ] Such as: fs/ocfs2/file.c: In function ‘ocfs2_file_write_iter’: ./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value] #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) and drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c: In function ‘ixgbevf_xdp_setup’: ./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value] #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- arch/sparc/include/asm/cmpxchg_64.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/sparc/include/asm/cmpxchg_64.h b/arch/sparc/include/asm/cmpxchg_64.h index faa2f61058c27..92f0a46ace78e 100644 --- a/arch/sparc/include/asm/cmpxchg_64.h +++ b/arch/sparc/include/asm/cmpxchg_64.h @@ -40,7 +40,12 @@ static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long return val; } -#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) +#define xchg(ptr,x) \ +({ __typeof__(*(ptr)) __ret; \ + __ret = (__typeof__(*(ptr))) \ + __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))); \ + __ret; \ +}) void __xchg_called_with_bad_pointer(void); -- 2.20.1