[frank-w-bpi-r2-4.14:5.15-bpi-r2-pro 90/90] drivers/gpu/drm/drm_connector.c:126:13: warning: no previous prototype for function 'drm_get_connector_type_name'

[frank-w-bpi-r2-4.14:5.15-bpi-r2-pro 90/90] drivers/gpu/drm/drm_connector.c:126:13: warning: no previous prototype for function 'drm_get_connector_type_name'

[kernel test robot]

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tree:   https://github.com/frank-w/BPI-R2-4.14 5.15-bpi-r2-pro
head:   14a93e4b341569bdb9f0456c3934e62402a82174
commit: 14a93e4b341569bdb9f0456c3934e62402a82174 [90/90] more porting
config: hexagon-randconfig-r041-20211014 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c76d0101193aa4eb891a6954ff047eda2f9cf71)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/frank-w/BPI-R2-4.14/commit/14a93e4b341569bdb9f0456c3934e62402a82174
        git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14
        git fetch --no-tags frank-w-bpi-r2-4.14 5.15-bpi-r2-pro
        git checkout 14a93e4b341569bdb9f0456c3934e62402a82174
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/drm_connector.c:126:13: warning: no previous prototype for function 'drm_get_connector_type_name' [-Wmissing-prototypes]
   const char *drm_get_connector_type_name(unsigned int type)
               ^
   drivers/gpu/drm/drm_connector.c:126:7: note: declare 'static' if the function is not intended to be used outside of this translation unit
   const char *drm_get_connector_type_name(unsigned int type)
         ^
   static 
   1 warning generated.


vim +/drm_get_connector_type_name +126 drivers/gpu/drm/drm_connector.c

52217195176115 Daniel Vetter    2016-08-12  119  
b35f90f2d4a63c Laurent Pinchart 2020-02-26  120  /**
b35f90f2d4a63c Laurent Pinchart 2020-02-26  121   * drm_get_connector_type_name - return a string for connector type
b35f90f2d4a63c Laurent Pinchart 2020-02-26  122   * @type: The connector type (DRM_MODE_CONNECTOR_*)
b35f90f2d4a63c Laurent Pinchart 2020-02-26  123   *
b35f90f2d4a63c Laurent Pinchart 2020-02-26  124   * Returns: the name of the connector type, or NULL if the type is not valid.
b35f90f2d4a63c Laurent Pinchart 2020-02-26  125   */
b35f90f2d4a63c Laurent Pinchart 2020-02-26 @126  const char *drm_get_connector_type_name(unsigned int type)
b35f90f2d4a63c Laurent Pinchart 2020-02-26  127  {
b35f90f2d4a63c Laurent Pinchart 2020-02-26  128  	if (type < ARRAY_SIZE(drm_connector_enum_list))
b35f90f2d4a63c Laurent Pinchart 2020-02-26  129  		return drm_connector_enum_list[type].name;
b35f90f2d4a63c Laurent Pinchart 2020-02-26  130  
b35f90f2d4a63c Laurent Pinchart 2020-02-26  131  	return NULL;
b35f90f2d4a63c Laurent Pinchart 2020-02-26  132  }
b35f90f2d4a63c Laurent Pinchart 2020-02-26  133  EXPORT_SYMBOL(drm_get_connector_type_name);
b35f90f2d4a63c Laurent Pinchart 2020-02-26  134  

:::::: The code@line 126 was first introduced by commit
:::::: b35f90f2d4a63cf2bc427f5c4e33eb86d963e716 drm/connector: Add helper to get a connector type name

:::::: TO: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
:::::: CC: Tomi Valkeinen <tomi.valkeinen@ti.com>

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

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