On Wednesday 01 October 2014 11:11:46 Darren Hart wrote:

quoted

No, I think in absence of drv->acpi_match_table ACPI core should just go
and
use drv->of_match_table to do the matching and be done with it.

But then you will match drivers that have of-only support that don't know
anything about ACPI and haven't been updated to use the new API. Worse,
some of those drivers will assume of node structs and such and potentially
panic. Unless I'm sorry mistaken here....

I don't think that is a huge danger: most drivers tend to check for
the presence of dev->of_node before calling any of the DT interfaces,
you'd only ever enter the probe function if the compatible string matches
(i.e. an old kernel with a new ACPI table), and most users of ACPI
systems will disable CONFIG_OF at compile time, so the accessors looking
at the of_node are not there.

In theory it's possible that something goes wrong here, but it's not
very likely to ever cause problems.

	Arnd