[freescale-fslc:6.6-1.0.x-imx 3946/11728] drivers/crypto/caam/sm_test.c:505:6: warning: no previous prototype for function 'caam_sm_example_shutdown'

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

tree:   https://github.com/Freescale/linux-fslc 6.6-1.0.x-imx
head:   37770f55ac9c4f6cd958eb5544939207eed8478f
commit: 7cab0da0e45916b37265ebeca4d2a393e044fb2b [3946/11728] MLKU-25-3 crypto: caam - add Secure Memory support
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20240430/202404300037.iHLnuiqB-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 5ef5eb66fb428aaf61fb51b709f065c069c11242)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240430/202404300037.iHLnuiqB-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/202404300037.iHLnuiqB-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/crypto/caam/sm_test.c:26:
   In file included from drivers/crypto/caam/compat.h:18:
   In file included from include/linux/dma-mapping.h:11:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:2168:
   include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     508 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     509 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     515 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     516 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     527 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     528 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     536 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     537 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/crypto/caam/sm_test.c:505:6: warning: no previous prototype for function 'caam_sm_example_shutdown' [-Wmissing-prototypes]
     505 | void caam_sm_example_shutdown(void)
         |      ^
   drivers/crypto/caam/sm_test.c:505:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     505 | void caam_sm_example_shutdown(void)
         | ^
         | static 
   6 warnings generated.


vim +/caam_sm_example_shutdown +505 drivers/crypto/caam/sm_test.c

   504	
 > 505	void caam_sm_example_shutdown(void)
   506	{
   507		/* unused in present version */
   508		struct device_node *dev_node;
   509		struct platform_device *pdev;
   510	
   511		/*
   512		 * Do of_find_compatible_node() then of_find_device_by_node()
   513		 * once a functional device tree is available
   514		 */
   515		dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
   516		if (!dev_node) {
   517			dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
   518			if (!dev_node)
   519				return;
   520		}
   521	
   522		pdev = of_find_device_by_node(dev_node);
   523		if (!pdev)
   524			return;
   525	
   526		of_node_get(dev_node);
   527	

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