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=-10.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT autolearn=ham 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 17B9CC43387 for ; Thu, 10 Jan 2019 06:59:45 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DE1AF20657 for ; Thu, 10 Jan 2019 06:59:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="SYwvDnLh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE1AF20657 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PIgPzIzDQi2tuJOQWh14j9Zmch3iiFYFFKAgJzgbDt4=; b=SYwvDnLhnCFSOFHRuwa5hFyW0 L58K2qyS+TUOj8G0ryLGoxpPdgwOdFvGtMFWG239yAeIg8uCX6mfymvYM4YDgoRL831ctB97xbiRy 5ug/Mj1BDntOnLZJ873fJzrMovn72rdANy39k28MQSor8zOt5nrL5FtncNf//C8cqoPMiO62J+5Xc oEUDhRDavVyzPUMv/oRjQyoBkDaAuq8qGHYiL5cf7HdD+35SyZmv/Ecgk6yVn9wWFWPWzL/0eAN6w Nsk0sSRrt/ZHikjAQYWFKnHXEX6ma4HHbK07XqumvZ19FZ4DA1KLl0ut9DnJ2JQUqz448fgU11OkS RHPNXUCCw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ghUJb-0005sd-Cq; Thu, 10 Jan 2019 06:59:43 +0000 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ghUJY-0005sF-Nm for linux-arm-kernel@lists.infradead.org; Thu, 10 Jan 2019 06:59:42 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id 9B718209EF; Thu, 10 Jan 2019 07:59:39 +0100 (CET) Received: from localhost (lfbn-1-10718-76.w90-89.abo.wanadoo.fr [90.89.68.76]) by mail.bootlin.com (Postfix) with ESMTPSA id 6637F20729; Thu, 10 Jan 2019 07:59:29 +0100 (CET) Date: Thu, 10 Jan 2019 07:59:29 +0100 From: Maxime Ripard To: Chen-Yu Tsai Subject: Re: [PATCH] clocksource: sun5i: fail gracefully when clock rate is unavailable Message-ID: <20190110065929.3vqqzdhrcdkfxpyv@flea> References: <20190110062207.18787-1-wens@csie.org> MIME-Version: 1.0 In-Reply-To: <20190110062207.18787-1-wens@csie.org> User-Agent: NeoMutt/20180716 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190109_225940_909966_053EFA9F X-CRM114-Status: GOOD ( 12.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Gleixner , Daniel Lezcano , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============5282728345150306135==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============5282728345150306135== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="xobxpkhdrt4q2yph" Content-Disposition: inline --xobxpkhdrt4q2yph Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 10, 2019 at 02:22:07PM +0800, Chen-Yu Tsai wrote: > If the clock tree is not fully populated when the timer-sun5i init code > is called, attempts to get the clock rate for the timer would fail and > return 0. >=20 > Make the init code for both clock events and clocksource check the > returned clock rate and fail gracefully if the result is 0, instead of > causing a divide by 0 exception later on. >=20 > Fixes: 4a59058f0b09 ("clocksource/drivers/sun5i: Refactor the current cod= e") > Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Thanks! Maxime --=20 Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --xobxpkhdrt4q2yph Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXDbtUQAKCRDj7w1vZxhR xeD8AP9YfZ3756cbdi2l58QMJAF5x2SC7Munn8CWmq/qUjQfSwEApSGayIf49Ho8 wNJa4RC+ZB/73zekhANEnOPOyJihsA4= =3Zx/ -----END PGP SIGNATURE----- --xobxpkhdrt4q2yph-- --===============5282728345150306135== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============5282728345150306135==--