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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0E35C433F5 for ; Tue, 18 Jan 2022 02:43:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344553AbiARCne (ORCPT ); Mon, 17 Jan 2022 21:43:34 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:47832 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345110AbiARCiT (ORCPT ); Mon, 17 Jan 2022 21:38:19 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3D219B81132; Tue, 18 Jan 2022 02:38:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27388C36AE3; Tue, 18 Jan 2022 02:38:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642473497; bh=VjeGrVWKUxuNF7cBz0+iP8hkmF9ifj/wPGSoiuV5FjM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jIcSZV+O7c5G8YPXRtNpGa3ArKtjfCHe2VAMLz2JXfsAMKZ/WCjgEqoOLAo8lX9Wa RCWdlMVcLeA9DvBIctRGaY4Elzfvr40+AD5+jXhRacqvlO31TbUfow4nxCip4ld+nV tid8HX2OvsGxuk2prl4342PyBxuJcI784SFlaVXAvG0VkgQMajzZ3D4G/wmkIGNXtA uIkWxBYLzfJSdpzHirIxXLC/8MaT5W6qo1FyLsr+EvRgeQLXmttJQlRpjZxqDVUvyV 80/iLlQXTeaEmSujxFOD4TIk4YmHipn3fNIved4Od2owOS3VrjwNf+QqN/vvO8ZQXo /bTRFRm5IOioA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Changcheng Deng , Zeal Robot , Bjorn Andersson , Sasha Levin , nks@flawful.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 137/188] PM: AVS: qcom-cpr: Use div64_ul instead of do_div Date: Mon, 17 Jan 2022 21:31:01 -0500 Message-Id: <20220118023152.1948105-137-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220118023152.1948105-1-sashal@kernel.org> References: <20220118023152.1948105-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Changcheng Deng [ Upstream commit 92c550f9ffd2884bb5def52b5c0485a35e452784 ] do_div() does a 64-by-32 division. Here the divisor is an unsigned long which on some platforms is 64 bit wide. So use div64_ul instead of do_div to avoid a possible truncation. Reported-by: Zeal Robot Signed-off-by: Changcheng Deng Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20211125014311.45942-1-deng.changcheng@zte.com.cn Signed-off-by: Sasha Levin --- drivers/soc/qcom/cpr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/soc/qcom/cpr.c b/drivers/soc/qcom/cpr.c index 4ce8e816154f9..84dd93472a252 100644 --- a/drivers/soc/qcom/cpr.c +++ b/drivers/soc/qcom/cpr.c @@ -1010,7 +1010,7 @@ static int cpr_interpolate(const struct corner *corner, int step_volt, return corner->uV; temp = f_diff * (uV_high - uV_low); - do_div(temp, f_high - f_low); + temp = div64_ul(temp, f_high - f_low); /* * max_volt_scale has units of uV/MHz while freq values -- 2.34.1