linux-kernel - Re: [PATCH v2.1 7/8] ACPI: bus: Adjust feature mask creation for \_SB.

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Message-ID: <20251223112647.00001ebf@huawei.com>
Date: Tue, 23 Dec 2025 11:26:47 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>
CC: Linux ACPI <linux-acpi@...r.kernel.org>, LKML
	<linux-kernel@...r.kernel.org>, Linux PCI <linux-pci@...r.kernel.org>, Bjorn
 Helgaas <helgaas@...nel.org>, Srinivas Pandruvada
	<srinivas.pandruvada@...ux.intel.com>, Hans de Goede <hansg@...nel.org>,
	Mario Limonciello <mario.limonciello@....com>
Subject: Re: [PATCH v2.1 7/8] ACPI: bus: Adjust feature mask creation for
 \_SB._OSC

On Mon, 22 Dec 2025 20:23:29 +0100
"Rafael J. Wysocki" <rafael@...nel.org> wrote:

> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> The feature mask creation for \_SB._OSC is messy and hard to follow,
> so clean it up and make all of the CPPC-related features depend on
> CONFIG_ACPI_CPPC_LIB as they will not work if it is not set anyway.
> 
> Also make acpi_bus_osc_negotiate_platform_control() print a message
> including a bit mask representig the features for which control has
> been granted.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>
> ---
> 
> v1 -> v2.1:
>    * Print one more message including the initial feature mask before processing.
>    * Add R-by from Jonathan (assuming it still applies).
FWIW the extra message makes sense to me. So RB definitely still applies.