From nobody Sun Feb 8 09:10:20 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0C791C001E0 for ; Tue, 25 Jul 2023 13:49:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231590AbjGYNtD (ORCPT ); Tue, 25 Jul 2023 09:49:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231599AbjGYNs6 (ORCPT ); Tue, 25 Jul 2023 09:48:58 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78A531FD0 for ; Tue, 25 Jul 2023 06:48:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C5BB46171E for ; Tue, 25 Jul 2023 13:48:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 609C0C433CA; Tue, 25 Jul 2023 13:48:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690292932; bh=v5mmMDcLa9Qz+qTohnDO/9Jf2svRDFSXLGnLYI1Fcc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SFLrP4GFqOQh1yYxfBN3ODV9bJRXnvbtT/GzhtfnMr9ePZxfUcUQ5Tpbu6wCPpWiv DEWidaqarR3eOw48om02/LZ0u+9Rm8NttxomDfeRglYP1kAkaxYz8U7vwU952avJxp 0z4EZWQHx9tE+V6WXJWWFalOHebK3xkhBjtd+p7wxI3Nz22nLbokLkXvbWjdjuZ6zX bgiBdi+0YLD8sUs2wGrHHeDRn18ppYuUEwtRBChFKIc+vtRklup8j10Wj6oeDl6/vG WnGaZP7eTI80FgbsesszEcFL11NNEu0hhaHcJNQsehnI1n5xnpbjlio1NAwdRNFEdd QQjkIiZqz2AyA== From: Arnd Bergmann To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Arnd Bergmann , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Subject: [PATCH 2/5] [RESEND] x86: avoid unneeded __div64_32 function definition Date: Tue, 25 Jul 2023 15:48:34 +0200 Message-Id: <20230725134837.1534228-3-arnd@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230725134837.1534228-1-arnd@kernel.org> References: <20230725134837.1534228-1-arnd@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Arnd Bergmann The __div64_32() function is provided for 32-bit architectures that don't have a custom do_div() implementation. x86_32 has one, and does not use the header file that declares the function prototype, so the definition causes a W=3D1 warning: lib/math/div64.c:31:32: error: no previous prototype for '__div64_32' [-Wer= ror=3Dmissing-prototypes] Define an empty macro to prevent the function definition from getting built, which avoids the warning and saves a little .text space. Signed-off-by: Arnd Bergmann --- arch/x86/include/asm/div64.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/include/asm/div64.h b/arch/x86/include/asm/div64.h index b8f1dc0761e4b..9826d5fc12e34 100644 --- a/arch/x86/include/asm/div64.h +++ b/arch/x86/include/asm/div64.h @@ -71,6 +71,8 @@ static inline u64 mul_u32_u32(u32 a, u32 b) } #define mul_u32_u32 mul_u32_u32 =20 +#define __div64_32 /* not needed */ + #else # include =20 --=20 2.39.2