linux-kernel - New warning: PRMT not found

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Date:   Mon, 26 Jul 2021 09:42:33 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Erik Kaneda <erik.kaneda@...el.com>
Cc:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: New warning: PRMT not found

Dear Erik,

The new code added in commit cefc7ca462 (ACPI: PRM: implement 
OperationRegion handler for the PlatformRtMechanism subtype) causes 
Linux to log a warning on my desktop system Asus F2A85-M PRO.

     PRMT not found

The help text for the Kconfig option `ACPI_PRMT` suggests it’s mainly 
used for server systems, so the warning does not apply to a lot of 
systems. Therefore, in my opinion, the option should not be selected by 
default, or the warning be removed or demoted, and phrased in a way, 
that users can understand the consequences.

Kind regards,

Paul