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 3F001C432C0 for ; Wed, 27 Nov 2019 20:49:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0552C21843 for ; Wed, 27 Nov 2019 20:49:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574887789; bh=DjyCqwt1ga+lwVJAsjsS0ynYp2uQ2lXOueGsNp5OE3Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ocLhmPNHEyv/66ISsaqpVIpSGstAM0t5/EgRy2on0Re4Kq2AS2SFhU4fPGpyg6OGv qunwSSW2B/ZMB/MzHG44lEQmsPPG5gvSQGfJL8raOb0L8wDboa6a4YvTiWN1wgZ/01 n9LH0Xo1k+LpHA18GfvsQitv86PEacBIgEWlM4KY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727906AbfK0Utr (ORCPT ); Wed, 27 Nov 2019 15:49:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:35438 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730263AbfK0Uto (ORCPT ); Wed, 27 Nov 2019 15:49:44 -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 E316921843; Wed, 27 Nov 2019 20:49:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574887784; bh=DjyCqwt1ga+lwVJAsjsS0ynYp2uQ2lXOueGsNp5OE3Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YQFCQ0MpYqqhxE/kTNGmKy+f9jg3mkr7doufcY+42CDUI1f3gV4PGyCV4z7DdALPf qgRCJ+eRZbxxR0uthoL4DooVOEU9ehFt9CA6WmmQeL13NGg2HHn4IfdzjDbU48aZgE BWnFOqMkmxBtxN7EL/59R/AppbWfQx2bRrzpgFiI= 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 4.14 091/211] sparc64: Rework xchg() definition to avoid warnings. Date: Wed, 27 Nov 2019 21:30:24 +0100 Message-Id: <20191127203102.337052008@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127203049.431810767@linuxfoundation.org> References: <20191127203049.431810767@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 f71ef3729888f..316faa0130bab 100644 --- a/arch/sparc/include/asm/cmpxchg_64.h +++ b/arch/sparc/include/asm/cmpxchg_64.h @@ -52,7 +52,12 @@ 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