From 64d628427fe68f08fbc0e742b2eeffc07e2963b5 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 17 Apr 2013 08:46:19 -0700 Subject: s390: move dummy io_remap_pfn_range() to asm/pgtable.h [ Upstream commit 4f2e29031e6c67802e7370292dd050fd62f337ee ] Commit b4cbb197c7e7 ("vm: add vm_iomap_memory() helper function") added a helper function wrapper around io_remap_pfn_range(), and every other architecture defined it in . The s390 choice of may make sense, but is not very convenient for this case, and gratuitous differences like that cause unexpected errors like this: mm/memory.c: In function 'vm_iomap_memory': mm/memory.c:2439:2: error: implicit declaration of function 'io_remap_pfn_range' [-Werror=implicit-function-declaration] Glory be the kbuild test robot who noticed this, bisected it, and reported it to the guilty parties (ie me). Cc: Martin Schwidefsky Cc: Heiko Carstens Signed-off-by: Linus Torvalds Signed-off-by: Steven Rostedt --- arch/s390/include/asm/pgtable.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 6bd7d7483017..fb433eb40740 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -65,6 +65,10 @@ static inline int is_zero_pfn(unsigned long pfn) #define my_zero_pfn(addr) page_to_pfn(ZERO_PAGE(addr)) +/* TODO: s390 cannot support io_remap_pfn_range... */ +#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ + remap_pfn_range(vma, vaddr, pfn, size, prot) + #endif /* !__ASSEMBLY__ */ /* -- cgit v1.2.3