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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 1A3A5C3F2C6 for ; Thu, 27 Feb 2020 23:45:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E59AC246A5 for ; Thu, 27 Feb 2020 23:45:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582847101; bh=jS7+mPtdTkiNXDE3akD6Uj8BOQ6aBPXUdvAiHiiF+a0=; h=Subject:To:Cc:References:From:Date:In-Reply-To:List-ID:From; b=a+zg48vEwX0f7yU8j4Al50UvI1ZanjEZSGC8bdOe58tiCcm/8vLDxRao6Na+lqBQJ XwhHT0H4IK0DTZljSqA2o61+RnAXW217FGPNsFv+oQySWEmvAYhS2ib+sXeB5SE2GW mPwTeJ9ThJ0Tc3/bl3NIXZ5ff5DE0d9WZj9nvGKg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729809AbgB0XpA (ORCPT ); Thu, 27 Feb 2020 18:45:00 -0500 Received: from mail.kernel.org ([198.145.29.99]:47738 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729796AbgB0Xo7 (ORCPT ); Thu, 27 Feb 2020 18:44:59 -0500 Received: from [10.92.140.40] (unknown [167.220.149.40]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 33AC32469B; Thu, 27 Feb 2020 23:44:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582847099; bh=jS7+mPtdTkiNXDE3akD6Uj8BOQ6aBPXUdvAiHiiF+a0=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=TARKyIdG28sunPLcAMYM25ara3hoVOHzWIaKr9YDES8Cduaq59iEm8/vlhUga1sJ0 H8rhfwiFmUp60gcNyX1Nu1yuWcu5Me3SqVRYJ3DqA+YodXNjE8o1MfNrySG/0gI9+m yZYo5K02d1/+GOnioBzzo/N+3kTTSOBrm9cHy7vg= Subject: Re: [PATCH 1/3] PCI: Make PCIE_RESET_READY_POLL_MS configurable To: Bjorn Helgaas , "Spassov, Stanislav" Cc: "corbet@lwn.net" , "alex.williamson@redhat.com" , "ashok.raj@intel.com" , "tglx@linutronix.de" , "Wang, Wei" , "akpm@linux-foundation.org" , "Schoenherr, Jan H." , "rajatja@google.com" , "linux-pci@vger.kernel.org" , "linux-doc@vger.kernel.org" References: <20200227214534.GA143139@google.com> From: Sinan Kaya Autocrypt: addr=okaya@kernel.org; keydata= mQENBFrnOrUBCADGOL0kF21B6ogpOkuYvz6bUjO7NU99PKhXx1MfK/AzK+SFgxJF7dMluoF6 uT47bU7zb7HqACH6itTgSSiJeSoq86jYoq5s4JOyaj0/18Hf3/YBah7AOuwk6LtV3EftQIhw 9vXqCnBwP/nID6PQ685zl3vH68yzF6FVNwbDagxUz/gMiQh7scHvVCjiqkJ+qu/36JgtTYYw 8lGWRcto6gr0eTF8Wd8f81wspmUHGsFdN/xPsZPKMw6/on9oOj3AidcR3P9EdLY4qQyjvcNC V9cL9b5I/Ud9ghPwW4QkM7uhYqQDyh3SwgEFudc+/RsDuxjVlg9CFnGhS0nPXR89SaQZABEB AAG0HVNpbmFuIEtheWEgPG9rYXlhQGtlcm5lbC5vcmc+iQFOBBMBCAA4FiEEYdOlMSE+a7/c ckrQvGF4I+4LAFcFAlztcAoCGwMFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQvGF4I+4L AFfidAf/VKHInxep0Z96iYkIq42432HTZUrxNzG9IWk4HN7c3vTJKv2W+b9pgvBF1SmkyQSy 8SJ3Zd98CO6FOHA1FigFyZahVsme+T0GsS3/OF1kjrtMktoREr8t0rK0yKpCTYVdlkHadxmR Qs5xLzW1RqKlrNigKHI2yhgpMwrpzS+67F1biT41227sqFzW9urEl/jqGJXaB6GV+SRKSHN+ ubWXgE1NkmfAMeyJPKojNT7ReL6eh3BNB/Xh1vQJew+AE50EP7o36UXghoUktnx6cTkge0ZS qgxuhN33cCOU36pWQhPqVSlLTZQJVxuCmlaHbYWvye7bBOhmiuNKhOzb3FcgT7kBDQRa5zq1 AQgAyRq/7JZKOyB8wRx6fHE0nb31P75kCnL3oE+smKW/sOcIQDV3C7mZKLf472MWB1xdr4Tm eXeL/wT0QHapLn5M5wWghC80YvjjdolHnlq9QlYVtvl1ocAC28y43tKJfklhHiwMNDJfdZbw 9lQ2h+7nccFWASNUu9cqZOABLvJcgLnfdDpnSzOye09VVlKr3NHgRyRZa7me/oFJCxrJlKAl 2hllRLt0yV08o7i14+qmvxI2EKLX9zJfJ2rGWLTVe3EJBnCsQPDzAUVYSnTtqELu2AGzvDiM gatRaosnzhvvEK+kCuXuCuZlRWP7pWSHqFFuYq596RRG5hNGLbmVFZrCxQARAQABiQEfBBgB CAAJBQJa5zq1AhsMAAoJELxheCPuCwBX2UYH/2kkMC4mImvoClrmcMsNGijcZHdDlz8NFfCI gSb3NHkarnA7uAg8KJuaHUwBMk3kBhv2BGPLcmAknzBIehbZ284W7u3DT9o1Y5g+LDyx8RIi e7pnMcC+bE2IJExCVf2p3PB1tDBBdLEYJoyFz/XpdDjZ8aVls/pIyrq+mqo5LuuhWfZzPPec 9EiM2eXpJw+Rz+vKjSt1YIhg46YbdZrDM2FGrt9ve3YaM5H0lzJgq/JQPKFdbd5MB0X37Qc+ 2m/A9u9SFnOovA42DgXUyC2cSbIJdPWOK9PnzfXqF3sX9Aol2eLUmQuLpThJtq5EHu6FzJ7Y L+s0nPaNMKwv/Xhhm6Y= Message-ID: Date: Thu, 27 Feb 2020 18:44:56 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200227214534.GA143139@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On 2/27/2020 4:45 PM, Bjorn Helgaas wrote: > The 60 second timeout came from 821cdad5c46c ("PCI: Wait up to 60 > seconds for device to become ready after FLR") and is probably too > long. We probably should pick a smaller value based on numbers from > the spec and make quirks for devices that needed more time. If I remember right, there was no time mention about how long to wait. Spec says device should send CRS as long as it is not ready.