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 14D8BC61D9B for ; Wed, 22 Nov 2023 16:58:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231803AbjKVQ6V (ORCPT ); Wed, 22 Nov 2023 11:58:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231345AbjKVQ6T (ORCPT ); Wed, 22 Nov 2023 11:58:19 -0500 Received: from mx-out.tlen.pl (mx-out.tlen.pl [193.222.135.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2BB9197 for ; Wed, 22 Nov 2023 08:58:14 -0800 (PST) Received: (wp-smtpd smtp.tlen.pl 14329 invoked from network); 22 Nov 2023 17:58:11 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=o2.pl; s=1024a; t=1700672291; bh=3TOkf60vDNUoEBZRHO4yuyf9OPyZ930AHngfO3FLpH0=; h=Subject:To:Cc:From; b=JErpZcdCBk31yHcAlTOW8FVRQErD97aOl12wRaxssGfbeRiAT4hgzStDNA8RCtLqH vmMaU44bYoFh08FNklIQJBY1tBWMDbMJtlRr/tUObxYnUrTGpCHKjHnClK1h3WiF58 wxBLsTzrN9nBF0byn8dnKE85wonemeHOlyoQaVPE= Received: from aafl106.neoplus.adsl.tpnet.pl (HELO [192.168.1.22]) (mat.jonczyk@o2.pl@[83.4.141.106]) (envelope-sender ) by smtp.tlen.pl (WP-SMTPD) with ECDHE-RSA-AES256-GCM-SHA384 encrypted SMTP for ; 22 Nov 2023 17:58:10 +0100 Message-ID: Date: Wed, 22 Nov 2023 17:58:07 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/4] Extend time to wait for UIP for some callers To: Mario Limonciello , Alessandro Zummo , Alexandre Belloni Cc: "open list:REAL TIME CLOCK (RTC) SUBSYSTEM" , open list , linux-pm@vger.kernel.org, tobrohl@gmail.com, aalsing@gmail.com, Dhaval.Giani@amd.com, xmb8dsv4@gmail.com, x86@kernel.org, dhaval.giani@gmail.com References: <20231120141555.458-1-mario.limonciello@amd.com> Content-Language: en-GB From: =?UTF-8?Q?Mateusz_Jo=C5=84czyk?= Autocrypt: addr=mat.jonczyk@o2.pl; 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charset=UTF-8 Content-Transfer-Encoding: 8bit X-WP-MailID: ccc602f34ade53ca99ecd5fad929bca1 X-WP-AV: skaner antywirusowy Poczty o2 X-WP-SPAM: NO 0000000 [sZPE] Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org W dniu 20.11.2023 o 15:15, Mario Limonciello pisze: > A number of users have reported their system will have a failure reading > the RTC around s2idle entry or exit. > > This failure manifests as UIP clear taking longer than 10ms. > > By a debugging patch provided by Mateusz Jończyk it is shown that this > has taken upwards of 300ms in some cases. > > This series adjusts the UIP timeout to be configurable by the caller and > changes some callers which aren't called in an interrupt context to allow > longer timeouts. > > Mario Limonciello (4): > rtc: mc146818-lib: Adjust failure return code for mc146818_get_time() > rtc: Adjust failure return code for cmos_set_alarm() > rtc: Add support for configuring the UIP timeout for RTC reads > rtc: Extend timeout for waiting for UIP to clear to 1s Series tested on top of Linux 6.1.63, 6.6.2 and 6.7-rc2 (on a laptop that is not affected by the problems). No problems found, can be submitted to stable. Tested-by: Mateusz Jończyk Patches 1 and 2: Reviewed-by: Mateusz Jończyk Acked-by: Mateusz Jończyk Greetings, Mateusz