On Mon, Jun 17, 2019 at 08:40:38PM +0200, Enrico Weigelt, metux IT consult wrote:

> +/* subsys_spi_driver() - Helper macro for drivers that don't do
> + * anything special in module init/exit.  This eliminates a lot of
> + * boilerplate.  Each module may only use this macro once, and
> + * calling it replaces subsys_initcall() and module_exit()
> + */
> +#define subsys_spi_driver(__spi_driver) \

I'm not convinced we want to be encouraging anyone to be using
subsys_initcall() for SPI drivers in the first place - my guess would be
that with deferred probing none of that is needed anyway and the driver
could just use module_spi_driver().  Certainly if the drivers do
actually need subsys_initcall() I'd like to understand why before going
forward with something like this, and ideally we'd be able to remove the
need.