On Fri, 16 Aug 2019 08:54:31 +0200 Christoph Hellwig <hch@xxxxxx> wrote: > Just add a simple macro that passes a NULL dev argument to > dev_request_free_mem_region, and call request_mem_region in the > function for that particular case. Nit: > +struct resource *request_free_mem_region(struct resource *base, > + unsigned long size, const char *name); This isn't a macro ;)