[openeuler:OLK-5.10 2284/2284] fs/proc/base.c:1454:6: warning: no previous prototype for 'pbha_bit0_hide_file'

[openeuler:OLK-5.10 2284/2284] fs/proc/base.c:1454:6: warning: no previous prototype for 'pbha_bit0_hide_file'

[kernel test robot]

Hi Ma,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git OLK-5.10
head:   170b758d064664f953e8f6de41dd4a3ef122443a
commit: bea38841945a52bd03004240eb0da6a5115bae21 [2284/2284] arm64: mm: Hide pbha_bit0 in procfs if pbha is not enabled
config: arm64-randconfig-003-20241029 (https://download.01.org/0day-ci/archive/20241103/202411032055.ZoDSmsZX-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241103/202411032055.ZoDSmsZX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411032055.ZoDSmsZX-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/proc/base.c:1454:6: warning: no previous prototype for 'pbha_bit0_hide_file' [-Wmissing-prototypes]
    1454 | bool pbha_bit0_hide_file(const char *name)
         |      ^~~~~~~~~~~~~~~~~~~


vim +/pbha_bit0_hide_file +1454 fs/proc/base.c

  1453	
> 1454	bool pbha_bit0_hide_file(const char *name)
  1455	{
  1456		if (!system_support_pbha_bit0() && !strncmp("pbha_bit0", name, 9))
  1457			return true;
  1458	
  1459		return false;
  1460	}
  1461	#else
  1462	static bool pbha_bit0_hide_file(const char *name) { return false; }
  1463	#endif
  1464	

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