linux-kernel - Re: [PATCH v4 0/4] Extend time to wait for UIP for some callers

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Date: Sun, 17 Dec 2023 22:39:17 +0100
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Mateusz Jończyk <mat.jonczyk@...pl>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Mario Limonciello <mario.limonciello@....com>
Cc: "open list:REAL TIME CLOCK (RTC) SUBSYSTEM" <linux-rtc@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>, linux-pm@...r.kernel.org,
	tobrohl@...il.com, aalsing@...il.com, Dhaval.Giani@....com,
	xmb8dsv4@...il.com, x86@...nel.org, dhaval.giani@...il.com,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Borislav Petkov <bp@...en8.de>, "H . Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v4 0/4] Extend time to wait for UIP for some callers


On Mon, 27 Nov 2023 23:36:49 -0600, Mario Limonciello wrote:
> 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.
> 
> [...]

Applied, thanks!

[1/4] rtc: mc146818-lib: Adjust failure return code for mc146818_get_time()
      commit: af838635a3eb9b1bc0d98599c101ebca98f31311
[2/4] rtc: Adjust failure return code for cmos_set_alarm()
      commit: 1311a8f0d4b23f58bbababa13623aa40b8ad4e0c
[3/4] rtc: Add support for configuring the UIP timeout for RTC reads
      commit: 120931db07b49252aba2073096b595482d71857c
[4/4] rtc: Extend timeout for waiting for UIP to clear to 1s
      commit: cef9ecc8e938dd48a560f7dd9be1246359248d20


-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com