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=-7.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 D9A1CC433E3 for ; Fri, 24 Jul 2020 12:22:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABA4F20737 for ; Fri, 24 Jul 2020 12:22:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="J1EcZzV0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726981AbgGXMWB (ORCPT ); Fri, 24 Jul 2020 08:22:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726258AbgGXMWB (ORCPT ); Fri, 24 Jul 2020 08:22:01 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 41848C0619D3; Fri, 24 Jul 2020 05:22:01 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id b9so4342191plx.6; Fri, 24 Jul 2020 05:22:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=KA0BJosXtAeexsqs49sZ0prG2OIgAF6XF0D2f4gkqFU=; b=J1EcZzV0C+msUn7U8aZ/vDkyHLQ/z2gd7IsBhlVoZd/lt9zm5huOKz5zXNGr/vKzR/ 55UNPVp6tCX82rPnG99I2omBXcG9bzDIoGS5JtznaDfQJjsLGVa1ga5CFlzVLlHnbiQL BhRFUpi1V4Zht3/TrZgo42F/DJYMfaJpOkwD86ASZAxjAtoxjmXraJQnrGFlWcS1uZnL yQoBxHQXQ6DyuEpTioOClFDIOec+F3SNesA5ovmZ5DENmD3e1OYuNx/s+PjtVewLTUGB MR+dy+KeDsP6NR7dwyn3wh3URXnDvwZva3p1nc0xAnuC5GcIzYAmgHSxOjxUCMdZZgwo zYHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=KA0BJosXtAeexsqs49sZ0prG2OIgAF6XF0D2f4gkqFU=; b=cU0dz+ooyrjZRCQOL6chn4z6Hk58w1t2TsKDpjwT2Y7A+jczPkI6WwWwfqm7keKcj3 mk7PP5obApcjnbFB7aAXzGZokrvxuECcXLSaBjFoismZA6AjJY/MwnrekpFnNWpgJdPB 8LH87E+0E4jWFD60bOnbTZg3wTk7yiTQPxlCbCBQj+VrzbKsi3LT8HAZ+SDJuDd61OfP fOuK4ElfpfFOrLbKsDxIWwnLo9NbfcDP8exczjy68Pq2W8rILKA8IIKW9H2Y4lOqkhpJ FAgxvL5uIL2mgfMXrDhFs3gT/syRTmc/IDB7+jiVwXic5tyDuxjdt75hfys6xaOGAKoR +Hsw== X-Gm-Message-State: AOAM530HOrNFnvo8dHbvTkA09Vl/k08Bltndb5XqPcslsXc+o/Oz9sQU DssxBgYGy/U++tUKZyycG+Rp/3VV X-Google-Smtp-Source: ABdhPJxUQ45LCtJslTm+NOisZz+gCAiln04+CMq+Obeg3jVJ1DXTS/GQ9HfUdWP3xnIAm26yKGmnpw== X-Received: by 2002:a17:90a:eac7:: with SMTP id ev7mr4782829pjb.21.1595593320770; Fri, 24 Jul 2020 05:22:00 -0700 (PDT) Received: from ubt.spreadtrum.com ([117.18.48.82]) by smtp.gmail.com with ESMTPSA id r185sm5766819pfr.8.2020.07.24.05.21.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jul 2020 05:21:59 -0700 (PDT) From: Chunyan Zhang To: Sebastian Reichel Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Orson Zhai , Baolin Wang , Chunyan Zhang , Chunyan Zhang , Chen Yongzhi Subject: [PATCH v2 0/2] fix an overflow error on sc27xx power supply Date: Fri, 24 Jul 2020 20:21:46 +0800 Message-Id: <20200724122148.26541-1-zhang.lyra@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chunyan Zhang The patch 2/2 fixes an overflow error by changing to 64-bit divide operations. In order to avoid compile error on 32-bit architectures, this patchset also introduced a new 64-bit helper in patch 1/2. Changes since v1: (https://lkml.org/lkml/2020/7/17/63) - Added new help macro DIV_S64_ROUND_CLOSEST; - Fixed an error reported by kernel test robot . Chunyan Zhang (2): math64: New DIV_S64_ROUND_CLOSEST helper power: supply: sc27xx: prevent adc * 1000 from overflow drivers/power/supply/sc27xx_fuel_gauge.c | 9 +++++---- include/linux/math64.h | 19 +++++++++++++++++++ 2 files changed, 24 insertions(+), 4 deletions(-) -- 2.20.1