[asahilinux:bits/220-tso 4/4] arch/arm64/kernel/cpufeature_impdef.c:12:6: warning: no previous prototype for function 'has_apple_feature'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/AsahiLinux/linux bits/220-tso
head:   6a8bd3529f0e9a26ebabd614ab6582cda3337142
commit: 6a8bd3529f0e9a26ebabd614ab6582cda3337142 [4/4] arm64: Implement Apple IMPDEF TSO memory model control
config: arm64-randconfig-r021-20230731 (https://download.01.org/0day-ci/archive/20230803/202308032332.aHuS74oR-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce: (https://download.01.org/0day-ci/archive/20230803/202308032332.aHuS74oR-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/202308032332.aHuS74oR-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm64/kernel/cpufeature_impdef.c:12:6: warning: no previous prototype for function 'has_apple_feature' [-Wmissing-prototypes]
   bool has_apple_feature(const struct arm64_cpu_capabilities *entry, int scope)
        ^
   arch/arm64/kernel/cpufeature_impdef.c:12:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool has_apple_feature(const struct arm64_cpu_capabilities *entry, int scope)
   ^
   static 
   arch/arm64/kernel/cpufeature_impdef.c:24:6: warning: no previous prototype for function 'has_tso_fixed' [-Wmissing-prototypes]
   bool has_tso_fixed(const struct arm64_cpu_capabilities *entry, int scope)
        ^
   arch/arm64/kernel/cpufeature_impdef.c:24:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool has_tso_fixed(const struct arm64_cpu_capabilities *entry, int scope)
   ^
   static 
   arch/arm64/kernel/cpufeature_impdef.c:59:13: warning: no previous prototype for function 'init_cpu_hwcaps_indirect_list_impdef' [-Wmissing-prototypes]
   void __init init_cpu_hwcaps_indirect_list_impdef(void)
               ^
   arch/arm64/kernel/cpufeature_impdef.c:59:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init init_cpu_hwcaps_indirect_list_impdef(void)
   ^
   static 
   3 warnings generated.


vim +/has_apple_feature +12 arch/arm64/kernel/cpufeature_impdef.c

    11	
  > 12	bool has_apple_feature(const struct arm64_cpu_capabilities *entry, int scope)
    13	{
    14		u64 val;
    15		WARN_ON(scope != SCOPE_SYSTEM);
    16	
    17		if (read_cpuid_implementor() != ARM_CPU_IMP_APPLE)
    18			return false;
    19	
    20		val = read_sysreg(aidr_el1);
    21		return feature_matches(val, entry);
    22	}
    23	

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