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 7BC05C433F5 for ; Mon, 17 Jan 2022 17:08:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242167AbiAQRIk (ORCPT ); Mon, 17 Jan 2022 12:08:40 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:55978 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235530AbiAQRF4 (ORCPT ); Mon, 17 Jan 2022 12:05:56 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 4ABE661287; Mon, 17 Jan 2022 17:05:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79DEBC36AE3; Mon, 17 Jan 2022 17:05:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642439154; bh=VXoP1pDXXdxKyJvKkkNho3VgJCeVldHfGQGr+ET3sW0=; h=From:To:Cc:Subject:Date:From; b=VEPKC6s3u8lGXu+64CZ9yc5optP4axtoyXwaYCQu19CPS0/xXm80J/JFG0TL2sCh9 dlTYJOKZzTmnYb/DIBLK2IZ8RlhO+Efg4lvUPK+Ja4YzCDZYAQRUsyoHllNKlKOOXi 97G5GhU8byHa1LuRqppmIDE01jfyXsO6Na2eKmsAFyy8pjzRfRsC3WOvBRfsnRQUyb JiJtg4lB4g1Z9ALIAx8VLR4GhxBkbo3ON3sNQIAqrjOGrOk/xN1spgKU/3rMwXF3NC OGkF7cIrng0JdPzGx2uox1k93FLPRrufoYBiuTj3+hmDurPT7tjw4gmXl3j1TYcoMv hTjk6RY7aMjUQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Changcheng Deng , Zeal Robot , Abel Vesa , Sasha Levin , mturquette@baylibre.com, sboyd@kernel.org, shawnguo@kernel.org, linux-clk@vger.kernel.org, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 01/17] clk: imx: Use div64_ul instead of do_div Date: Mon, 17 Jan 2022 12:05:35 -0500 Message-Id: <20220117170551.1472640-1-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 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 c1b6ad9a902539f9c037b6b3c35cb134c5724022 ] 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 Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20211118080634.165275-1-deng.changcheng@zte.com.cn Signed-off-by: Abel Vesa Signed-off-by: Sasha Levin --- drivers/clk/imx/clk-pllv3.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c index 9af62ee8f347a..325a03e89cf8d 100644 --- a/drivers/clk/imx/clk-pllv3.c +++ b/drivers/clk/imx/clk-pllv3.c @@ -252,7 +252,7 @@ static long clk_pllv3_av_round_rate(struct clk_hw *hw, unsigned long rate, div = rate / parent_rate; temp64 = (u64) (rate - div * parent_rate); temp64 *= mfd; - do_div(temp64, parent_rate); + temp64 = div64_ul(temp64, parent_rate); mfn = temp64; temp64 = (u64)parent_rate; @@ -282,7 +282,7 @@ static int clk_pllv3_av_set_rate(struct clk_hw *hw, unsigned long rate, div = rate / parent_rate; temp64 = (u64) (rate - div * parent_rate); temp64 *= mfd; - do_div(temp64, parent_rate); + temp64 = div64_ul(temp64, parent_rate); mfn = temp64; val = readl_relaxed(pll->base); @@ -339,7 +339,7 @@ static struct clk_pllv3_vf610_mf clk_pllv3_vf610_rate_to_mf( /* rate = parent_rate * (mfi + mfn/mfd) */ temp64 = rate - parent_rate * mf.mfi; temp64 *= mf.mfd; - do_div(temp64, parent_rate); + temp64 = div64_ul(temp64, parent_rate); mf.mfn = temp64; } -- 2.34.1