linux-kernel - Re: [PATCH v1] ACPI: PM: s2idle: Evaluate all Low-Power S0 Idle

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Date: Wed, 24 Apr 2024 12:46:03 +0100
From: José Relvas <josemonsantorelvas@...il.com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: LKML <linux-kernel@...r.kernel.org>,
	Linux PM <linux-pm@...r.kernel.org>,
	Mark Pearson <mpearson@...ovo.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH v1] ACPI: PM: s2idle: Evaluate all Low-Power S0 Idle _DSM
 functions

On 4/23/2024 14:19, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Commit 073237281a50 ("ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT
> UUID for non-AMD systems") attempted to avoid evaluating the same Low-
> Power S0 Idle _DSM functions for different UUIDs, but that turns out to
> be a mistake, because some systems in the field are adversely affected
> by it.
> 
> Address this by allowing  all Low-Power S0 Idle _DSM functions to be
> evaluated, but still print the message regarding duplication of Low-
> Power S0 Idle _DSM function sets for different UUIDs.
> 
> Fixes: 073237281a50 ("ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT UUID for non-AMD systems")
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218750
> Reported-and-tested-by: Mark Pearson <mpearson@...ovo.com>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

FYI, I can confirm that this fixes the regression on my Thinkpad P1 Gen 6.