From 7a5324f9edf0e920c99ed90872e1baeaf04acbc1 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 17 Apr 2013 08:46:19 -0700 Subject: [PATCH] s390: move dummy io_remap_pfn_range() to asm/pgtable.h commit 4f2e29031e6c67802e7370292dd050fd62f337ee upstream. 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). Signed-off-by: Linus Torvalds Cc: Martin Schwidefsky Cc: Heiko Carstens Signed-off-by: Greg Kroah-Hartman --- arch/s390/include/asm/io.h | 4 ---- arch/s390/include/asm/pgtable.h | 4 ++++ 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h index 27cb32185ce1..379d96e2105e 100644 --- a/arch/s390/include/asm/io.h +++ b/arch/s390/include/asm/io.h @@ -50,10 +50,6 @@ void unxlate_dev_mem_ptr(unsigned long phys, void *addr); #define ioremap_nocache(addr, size) ioremap(addr, size) #define ioremap_wc ioremap_nocache -/* 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) - static inline void __iomem *ioremap(unsigned long offset, unsigned long size) { return (void __iomem *) offset; diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 098adbb62660..1532d7f33381 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -56,6 +56,10 @@ extern unsigned long zero_page_mask; (((unsigned long)(vaddr)) &zero_page_mask)))) #define __HAVE_COLOR_ZERO_PAGE +/* 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__ */ /* -- 2.39.5