Re: [RFC PATCH 1/9] cxl/acpi: Add an acpi_cxl module for the CXL interconnect

Dan Williams
2020-11-17T21:45:54Z

On Tue, Nov 17, 2020 at 6:33 AM Rafael J. Wysocki <rafael@kernel.org> wrote:
[..]
> > +static struct acpi_driver acpi_cxl_driver = {
>
> First of all, no new acpi_driver instances, pretty please!
>
> acpi_default_enumeration() should create a platform device with the
> ACPI0017 ID for you. Can't you provide a driver for this one?
>

Ah, yes, I recall we had this discussion around the time the ACPI0012
NFIT driver was developed. IIRC the reason ACPI0012 remaining an
acpi_driver was due to a need to handle ACPI notifications, is that
the deciding factor? ACPI0017 does not have any notifications so it
seems like platform driver is the way to go.