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openrisc: add forward declaration for struct vm_area_struct

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After removing linux/vmalloc.h from asm-generic/io.h, the following
warning occurs on openrisc:

   In file included from arch/openrisc/include/asm/io.h:33:0,
                    from include/linux/io.h:25,
                    from drivers/tty/serial/earlycon.c:19:
   arch/openrisc/include/asm/pgtable.h:424:2: warning: 'struct vm_area_struct' declared inside parameter list
     unsigned long address, pte_t *pte)
     ^
   arch/openrisc/include/asm/pgtable.h:424:2: warning: its scope is only this definition or declaration, which is probably not what you want

Reported-by: kbuild test robot <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Tobias Klauser <[email protected]>
Signed-off-by: Stafford Horne <[email protected]>
This commit is contained in:
Tobias Klauser 2017-09-08 10:25:08 +02:00 • committed by Stafford Horne
commit 56ce2f25ab
1 changed files with 2 additions and 0 deletions
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2
arch/openrisc/include/asm/pgtable.h
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@ -414,6 +414,8 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; /* defined in head.S */
struct vm_area_struct;
/*
* or32 doesn't have any external MMU info: the kernel page
* tables contain all the necessary information.