[liam:maple_marks_v7.2 3/31] lib/maple_tree.c:1158:21: warning: no previous prototype for function 'mas_lockdep_map'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/liam/linux.git maple_marks_v7.2
head:   be119ad50e9c87a4a975871d84614f7c6aeaf0de
commit: 3e341aa5972e499ffef5881c5dad0f9aa3488053 [3/31] maple_tree: Add write lock checking with lockdep sequence numbers
config: i386-randconfig-141-20260627 (https://download.01.org/0day-ci/archive/20260627/202606270553.g1bOF8H8-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
smatch: v0.5.0-9185-gbcc58b9c
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260627/202606270553.g1bOF8H8-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/202606270553.g1bOF8H8-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> lib/maple_tree.c:1158:21: warning: no previous prototype for function 'mas_lockdep_map' [-Wmissing-prototypes]
    1158 | struct lockdep_map *mas_lockdep_map(struct ma_state *mas)
         |                     ^
   lib/maple_tree.c:1158:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
    1158 | struct lockdep_map *mas_lockdep_map(struct ma_state *mas)
         | ^
         | static 
   1 warning generated.


vim +/mas_lockdep_map +1158 lib/maple_tree.c

  1155	
  1156	
  1157	#ifdef CONFIG_LOCKDEP
> 1158	struct lockdep_map *mas_lockdep_map(struct ma_state *mas)
  1159	{
  1160		struct maple_tree *mt = mas->tree;
  1161	
  1162		if (mt_external_lock(mt))
  1163			return mt->ma_external_lock;
  1164	
  1165		return &(mt->ma_lock).dep_map;
  1166	}
  1167	

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