On Tue, Mar 09, 2021 at 01:41:45PM -0600, Pierre-Louis Bossart wrote:

> The problem is that the cards are platform devices created by the parent
> (which itself may be a PCI or ACPI device) and have nothing to do with ACPI.

> Could we flip the logic and instead explicitly detect OF devices? That
> restores functionality for us.

Just change it to a system level check for ACPI, checking for OF would
leave problems for board files or any other alternative firmware
interfaces.