On Tue, Sep 11, 2018 at 08:59:16AM +0200, Takashi Iwai wrote:

> Hrm, the header file inclusion of pci_iomap() looks fairly
> inconsistent over architectures.  SH doesn't include asm/pci_iomap.h
> from asm/io.h.  And x86 includes it from linux/io-mapping.h.

> As a quick fix, we can just include <asm/pci_iomap.h> from
> patch_ca0132.c, I suppose.

Not on x86 we can't, it's not there - asm/io.h seems safest AFAICT,
everyone has it and both SH and x86 include the pci_iomap.h.