linux-kernel - Re: [PATCH v1] ACPI: Documentation: driver-api: Disapprove of using ACPI drivers

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Message-ID: <aVvd0eYC7Qs5_ZdD@smile.fi.intel.com>
Date: Mon, 5 Jan 2026 17:50:41 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <helgaas@...nel.org>,
	Hans de Goede <hansg@...nel.org>,
	Linux Documentation <linux-doc@...r.kernel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Zhang Rui <rui.zhang@...el.com>, Armin Wolf <w_armin@....de>,
	Danilo Krummrich <dakr@...nel.org>,
	Ilpo Jarvinen <ilpo.jarvinen@...ux.intel.com>
Subject: Re: [PATCH v1] ACPI: Documentation: driver-api: Disapprove of using
 ACPI drivers

On Mon, Jan 05, 2026 at 02:47:30PM +0100, Greg Kroah-Hartman wrote:
> On Mon, Jan 05, 2026 at 12:25:04PM +0100, Rafael J. Wysocki wrote:

> Documenting this is fine, but really, just moving all of the existing
> drivers to not use this and deleting the api entirely might be simplest.
> Looks like the only "new" acpi drivers that show up are in the
> platform/x86/ subsystem, so just tell the maintainers there not to take
> any new ones?

I believe that with or without documentation this will take a few cycles
to get rid of (as there are more than just the PDx86 being involved as of
today). Also there were (and might be in the future) a few attempts to convert
in the opposite direction, i.e. from platform to ACPI driver. Doing something
temporary for a few cycles is okay, no? From my point of view it helps avoiding
the above mentioned cases.

-- 
With Best Regards,
Andy Shevchenko