This is a note to let you know that I've just added the patch titled s390: move dummy io_remap_pfn_range() to asm/pgtable.h to the 3.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: s390-move-dummy-io_remap_pfn_range-to-asm-pgtable.h.patch and it can be found in the queue-3.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 4f2e29031e6c67802e7370292dd050fd62f337ee Mon Sep 17 00:00:00 2001 From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Wed, 17 Apr 2013 08:46:19 -0700 Subject: s390: move dummy io_remap_pfn_range() to asm/pgtable.h From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> 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 <asm/pgtable.h>. The s390 choice of <asm/io.h> 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 <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/s390/include/asm/io.h | 4 ---- arch/s390/include/asm/pgtable.h | 4 ++++ 2 files changed, 4 insertions(+), 4 deletions(-) --- 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 p #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; --- 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__ */ /* Patches currently in stable-queue which might be from torvalds@xxxxxxxxxxxxxxxxxxxx are queue-3.8/vm-convert-snd_pcm_lib_mmap_iomem-to-vm_iomap_memory-helper.patch queue-3.8/fs-binfmt_elf.c-fix-hugetlb-memory-check-in-vma_dump_size.patch queue-3.8/hugetlbfs-add-swap-entry-check-in-follow_hugetlb_page.patch queue-3.8/hugetlbfs-stop-setting-vm_dontdump-in-initializing-vma-vm_hugetlb.patch queue-3.8/kernel-signal.c-stop-info-leak-via-the-tkill-and-the-tgkill-syscalls.patch queue-3.8/hfsplus-fix-potential-overflow-in-hfsplus_file_truncate.patch queue-3.8/vm-convert-fb_mmap-to-vm_iomap_memory-helper.patch queue-3.8/vm-convert-mtdchar-mmap-to-vm_iomap_memory-helper.patch queue-3.8/vm-convert-hpet-mmap-to-vm_iomap_memory-helper.patch queue-3.8/vm-add-vm_iomap_memory-helper-function.patch queue-3.8/s390-move-dummy-io_remap_pfn_range-to-asm-pgtable.h.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html