On Tue, Nov 17, 2020 at 04:43:40PM +0100, Enrico Weigelt, metux IT consult wrote: > The of_match_ptr(foo) macro evaluates to foo, only if > CONFIG_OF is set, otherwise to NULL. Same does ACPI_PTR with > CONFIG_ACPI. That's very helpful for drivers that can be used > with or without oftree / acpi. > > Even though most of the drivers touched here probably don't > actually need that, it's also nice for consistency to make it > the de-facto standard and change all drivers to use the > of_match_ptr() and ACPI_PTR() macros. > > A nice side effect: in some situations, when compiled w/o > CONFIG_OF/CONFIG_ACPI, the corresponding match tables could > automatically become unreferenced and optimized-away by the > compiler, w/o explicitly cluttering the code w/ ifdef's. Isn't this going to cause a lot of "defined but unused" warnings when built without OF support, for example? Thierry
Attachment:
signature.asc
Description: PGP signature
