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 74E23ECAAD4 for ; Wed, 31 Aug 2022 13:21:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230213AbiHaNU7 (ORCPT ); Wed, 31 Aug 2022 09:20:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230315AbiHaNU6 (ORCPT ); Wed, 31 Aug 2022 09:20:58 -0400 X-Greylist: delayed 602 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Wed, 31 Aug 2022 06:20:56 PDT Received: from fw2.prolan.hu (fw2.prolan.hu [193.68.50.107]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7735E12A90; Wed, 31 Aug 2022 06:20:53 -0700 (PDT) Received: from imsva.intranet.prolan.hu (imsva.intranet.prolan.hu [10.254.254.252]) by fw2.prolan.hu (Postfix) with ESMTPS id C50867F540; Wed, 31 Aug 2022 15:03:40 +0200 (CEST) Received: from imsva.intranet.prolan.hu (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B23E634064; Wed, 31 Aug 2022 15:03:40 +0200 (CEST) Received: from imsva.intranet.prolan.hu (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 998BF3405A; Wed, 31 Aug 2022 15:03:40 +0200 (CEST) Received: from fw2.prolan.hu (unknown [10.254.254.253]) by imsva.intranet.prolan.hu (Postfix) with ESMTPS; Wed, 31 Aug 2022 15:03:40 +0200 (CEST) Received: from atlas.intranet.prolan.hu (atlas.intranet.prolan.hu [10.254.0.229]) by fw2.prolan.hu (Postfix) with ESMTPS id 638A87F540; Wed, 31 Aug 2022 15:03:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=prolan.hu; s=mail; t=1661951020; bh=qhxZovzJ5NVCosNILHzZdGtbXVH9Dqfa+uvEWfbbrmc=; h=Date:Subject:To:CC:References:From:In-Reply-To:From; b=aEMO8oJXfSHFlMjIzvmMgbgIrFZwBRAR95OrDPIOGjcUyUW6foQCnmzUWARsYxtN9 WajvJhrDuPneRRADIxh0waVrHfqwCn6u+9Gzwaa3Ot5lyr7E6TNMemqnGqBbl8wsL0 3V2AzcyDXexu9k9rNffH+agpADSAfrU3A0Qaadsn9fj2uDz9P806WyCKl/8iegYV+U 8XciyLlR3lkGvU0yW7aVuFM/AApP3RKBQgnSQkFF2lzcDe4/V8ST6CLN/MGAjkmXui iYWhwGoXzMz+qJmG4j9u16YmokUe/Vf6aEso2l+vwpj9Lr2f9adED+iyNwm2lsvG+T KxgAI3aivpBSQ== Received: from [10.254.7.28] (10.254.7.28) by atlas.intranet.prolan.hu (10.254.0.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P521) id 15.1.2507.12; Wed, 31 Aug 2022 15:03:40 +0200 Message-ID: <0d6d1182-921e-1da2-b315-427f25228d12@prolan.hu> Date: Wed, 31 Aug 2022 15:03:40 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH AUTOSEL 5.15 17/23] fec: Restart PPS after link state change Content-Language: en-US To: Sasha Levin , , CC: "David S . Miller" , , , , References: <20220830172141.581086-1-sashal@kernel.org> <20220830172141.581086-17-sashal@kernel.org> From: =?UTF-8?B?Q3PDs2vDoXMgQmVuY2U=?= In-Reply-To: <20220830172141.581086-17-sashal@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.254.7.28] X-ClientProxiedBy: atlas.intranet.prolan.hu (10.254.0.229) To atlas.intranet.prolan.hu (10.254.0.229) X-EsetResult: clean, is OK X-EsetId: 37303A29971EF456637D67 X-TM-AS-GCONF: 00 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On 2022. 08. 30. 19:21, Sasha Levin wrote: > From: Csókás Bence > > [ Upstream commit f79959220fa5fbda939592bf91c7a9ea90419040 ] > > On link state change, the controller gets reset, > causing PPS to drop out and the PHC to lose its > time and calibration. So we restart it if needed, > restoring calibration and time registers. There is an ongoing investigation on netdev@ about a potential kernel panic on kernels newer than 5.12 with this patch applied. Please hold off on backporting to 5.15 until the bugfix is applied to upstream.