From patchwork Wed Sep 6 20:00:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 721204 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 82879EE14D0 for ; Wed, 6 Sep 2023 20:01:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244122AbjIFUBX (ORCPT ); Wed, 6 Sep 2023 16:01:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243736AbjIFUAr (ORCPT ); Wed, 6 Sep 2023 16:00:47 -0400 Received: from mail.zeus03.de (www.zeus03.de [194.117.254.33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02F8B1997 for ; Wed, 6 Sep 2023 13:00:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; s=k1; bh=b7rT9wKJbxCEtc/9yaA+sRK1E4pHjRX6I/sjz0k8OFI=; b=XkyC9W SX7VufPiTrmKAmknt+S/jhNIMLXAsM5CelCu9rasnkZBlJcVz8lYKgvAJAxTrKcU RoPxNqXTxx20jVaGWZiq9/umbtkdM3Zb5qIBjrCrXIiCiXdBJZhwBnh2R7zdA3gI 9jb6wJ2weDhLDQ/eeaVN1SURDC4aUPY0mjBhzyxhHASxPL6EZ8pzanDZI4eu0I+X oAXFMUq0iR32cGvVPNedhwQ1HcupXLGPJK20bTqs/gGM+XWqHMo5N0lP52Iq5pXB YF0zz1cvHcT4k0gaI1Fqo1xYTtRkjosts1lpOZgxuZNc1yfatSkuyYO3sLrNIWa/ mhya5NnN/zYNuIzw== Received: (qmail 2929932 invoked from network); 6 Sep 2023 22:00:30 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 6 Sep 2023 22:00:30 +0200 X-UD-Smtp-Session: l3s3148p1@kxsBMrYEOIsgAQnoAFZhALrSGIaWNE/A From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Wolfram Sang , Chris Brandt , Andi Shyti , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/5] i2c: riic: avoid potential division by zero Date: Wed, 6 Sep 2023 22:00:23 +0200 Message-Id: <20230906200024.5305-6-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230906200024.5305-1-wsa+renesas@sang-engineering.com> References: <20230906200024.5305-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Value comes from DT, so it could be 0. Unlikely, but could be. Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-riic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index f0ee8871d5ae..e43ff483c56e 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -313,7 +313,7 @@ static int riic_init_hw(struct riic_dev *riic, struct i2c_timings *t) * frequency with only 62 clock ticks max (31 high, 31 low). * Aim for a duty of 60% LOW, 40% HIGH. */ - total_ticks = DIV_ROUND_UP(rate, t->bus_freq_hz); + total_ticks = DIV_ROUND_UP(rate, t->bus_freq_hz ?: 1); for (cks = 0; cks < 7; cks++) { /*