Hi Christoph, On 05/16/23 at 11:31pm, Christoph Hellwig wrote: > > +#define ioremap ioremap > > +#define ioremap_prot ioremap_prot > > +#define iounmap iounmap > > Nit: I think it's cleaner to have these #defines right next to the > function declaration. For this one, I didn't add function declaration of ioremap_prot and iounmap in arch/arc/include/asm/io.h and the same to other arch's asm/io.h. Because asm-generic/io.h already has those function declaration, then ARCH's asm/io.h includeasm-generic/io.h. I tried adding function declarations for ioremap_prot() and iounmap(), building passed too. Do you think we need add extra function declarations in ARCH's asm/io.h file? Thanks Baoquan