arch/parisc/include/asm/io.h

279

extern int devmem_is_allowed(unsigned long pfn);

arch/powerpc/include/asm/page.h

277

extern int devmem_is_allowed(unsigned long pfn);

arch/x86/include/asm/page_types.h

53

extern int devmem_is_allowed(unsigned long pagenr);

drivers/char/mem.c

62

return devmem_is_allowed(pfn);

include/asm-generic/io.h

1283

extern int devmem_is_allowed(unsigned long pfn);

include/linux/io.h

194

if (!devmem_is_allowed(pfn))

kernel/resource.c

1288

if (devmem_is_allowed(PHYS_PFN(res->start)) &&

kernel/resource.c

1289

devmem_is_allowed(PHYS_PFN(res->end))) {