[linux-next:master 2551/10701] arch/x86/mm/init.c:79:22: warning: no previous prototype for 'pgprot2cachemode'

[linux-next:master 2551/10701] arch/x86/mm/init.c:79:22: warning: no previous prototype for 'pgprot2cachemode'

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   fb57b1fabcb28f358901b2df90abd2b48abc1ca8
commit: 7fa3e10f0f3646108a1018004d0f571c3222dc9f [2551/10701] x86/mm: Move pgprot2cachemode out of line
config: i386-randconfig-r015-20200519 (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        git checkout 7fa3e10f0f3646108a1018004d0f571c3222dc9f
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

arch/x86/mm/init.c:74:6: warning: no previous prototype for 'x86_has_pat_wp' [-Wmissing-prototypes]
bool x86_has_pat_wp(void)
^~~~~~~~~~~~~~
>> arch/x86/mm/init.c:79:22: warning: no previous prototype for 'pgprot2cachemode' [-Wmissing-prototypes]
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^~~~~~~~~~~~~~~~
arch/x86/mm/init.c:484:21: warning: no previous prototype for 'init_memory_mapping' [-Wmissing-prototypes]
unsigned long __ref init_memory_mapping(unsigned long start,
^~~~~~~~~~~~~~~~~~~
arch/x86/mm/init.c:726:13: warning: no previous prototype for 'poking_init' [-Wmissing-prototypes]
void __init poking_init(void)
^~~~~~~~~~~
arch/x86/mm/init.c:875:13: warning: no previous prototype for 'mem_encrypt_free_decrypted_mem' [-Wmissing-prototypes]
void __weak mem_encrypt_free_decrypted_mem(void) { }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/pgprot2cachemode +79 arch/x86/mm/init.c

    78	
  > 79	enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
    80	{
    81		unsigned long masked;
    82	
    83		masked = pgprot_val(pgprot) & _PAGE_CACHE_MASK;
    84		if (likely(masked == 0))
    85			return 0;
    86		return __pte2cachemode_tbl[__pte2cm_idx(masked)];
    87	}
    88	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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