linux-kernel - Re: kernel: hpet_acpi_add: no address or irqs in

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Message-ID: <bb1ee774f6b5a00a3a735389b14e8cf86d5ca187.camel@decadent.org.uk>
Date: Sun, 22 Sep 2024 21:53:57 +0200
From: Ben Hutchings <ben@...adent.org.uk>
To: Clemens Ladisch <clemens@...isch.de>
Cc: 1041484@...s.debian.org, Al Ma <alma0@...ru>, LKML
	 <linux-kernel@...r.kernel.org>
Subject: Re: kernel: hpet_acpi_add: no address or irqs in _CRS

On Wed, 2023-07-19 at 15:04 +0000, Al Ma wrote:

> Package: linux-image-6.1.0-10-amd64
> Version: 6.1.37-1
> In the journal of a laptop Lenovo ThinkPad T14s Gen1, connected to a docking station ThinkPad Thunderbolt 3 Dock Gen 2/Workstation Dock Gen 2 Type 40 AN (which is powered by a 135 W AC Adapter ADL135NCC3A) and to a monitor Philips 275B1 via a HMDI cable, we discovered the following warning (last line is yellow) generated at boot:
[...]

> Jul 19 16:20:34 AnonymizedLenovoThinkPadT14s kernel: hpet_acpi_add: no address or irqs in _CRS
[...]

This was also reported as appearing on Lenovo ThinkPad T14 gen 4
running Linux 6.10.  I searched for the warning on lore.kernel.org and
found that it also appeared on:

- Dell XPS 13 9360/0596KF, Linux 6.9-6.11
- Intel NUC12WSHi7/NUC12WSBi7, Linux 6.11
- Lenovo IdeaPad 82MG, Linux 6.1
- Lenovo ThinkPad T480, Linux 6.10
- System76 Pangolin, Linux 6.11

Is this likely to be a bug in the driver, or in the firmware?  If this
is a common case where the HPET isn't available and has an incomplete
description in the ACPI table, should the warning message be downgraded
to info level?

Ben.


-- 
Ben Hutchings
The two most common things in the universe are hydrogen and stupidity.


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