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 05FC6C35268 for ; Tue, 18 Jan 2022 03:03:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352999AbiARDAy (ORCPT ); Mon, 17 Jan 2022 22:00:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350927AbiARCwf (ORCPT ); Mon, 17 Jan 2022 21:52:35 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0D4ECC02C30C; Mon, 17 Jan 2022 18:43:22 -0800 (PST) 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 dfw.source.kernel.org (Postfix) with ESMTPS id D84D3612D4; Tue, 18 Jan 2022 02:43:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56191C36AEF; Tue, 18 Jan 2022 02:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642473801; bh=lqjG8Z5Qsq8axODgfIxil7lLhZeJUVwF0kCwte+SYhg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rrdlvYZ/fMcS5xCvNs/dEZvkQPXDrNrFlH/Fd2MTVgBAgFv9X0nxaeF3txsvaZou1 Nph4+IB5kvZjjFVFbKiXBJj620o11M07m56ozgAjmZgpqez09V06xDhFSJwoW/01bb vUq1pxHYiLX9Mf4BzZNVa0f3g79wBD0yTgHsTH6VXNzhjCyLFxEQDxSFeXOLH8VtuD xgfPVHsA0EH/ZGZBuAXSvPNKyz6ZK5iKSC6ac/cnQL+fsRS8daLjuFAMn5u4AOJ7Wt JGeLjQq7YYnTyUocj/3FRKgYwvqGrBPtqC6kYdy5aDLBsquXhZWd0HU3Ca+Kqw3Xe2 wZnnAdYBymuKw== 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 5.10 079/116] PM: AVS: qcom-cpr: Use div64_ul instead of do_div Date: Mon, 17 Jan 2022 21:39:30 -0500 Message-Id: <20220118024007.1950576-79-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220118024007.1950576-1-sashal@kernel.org> References: <20220118024007.1950576-1-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: stable@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 b24cc77d1889f..6298561bc29c9 100644 --- a/drivers/soc/qcom/cpr.c +++ b/drivers/soc/qcom/cpr.c @@ -1043,7 +1043,7 @@ 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