[PATCH] drm: of: Add drm_of_lvds_get_data_mapping

[kernel test robot]

Hi Marek,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master airlied/drm-next v5.15-rc5 next-20211008]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Marek-Vasut/drm-of-Add-drm_of_lvds_get_data_mapping/20211011-092451
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: xtensa-buildonly-randconfig-r003-20211011 (attached as .config)
compiler: xtensa-linux-gcc (GCC) 11.2.0
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/0day-ci/linux/commit/d9a4ed21a0ee9b11df5d862e54876002751fbd45
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Marek-Vasut/drm-of-Add-drm_of_lvds_get_data_mapping/20211011-092451
        git checkout d9a4ed21a0ee9b11df5d862e54876002751fbd45
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=xtensa 

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

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/bridge/panel.c:12:
   include/drm/drm_of.h:105:1: error: expected identifier or '(' before '{' token
     105 | {
         | ^
>> include/drm/drm_of.h:104:1: error: 'drm_of_lvds_get_data_mapping' declared 'static' but never defined [-Werror=unused-function]
     104 | drm_of_lvds_get_data_mapping(const struct device_node *port);
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +104 include/drm/drm_of.h

   102	
   103	static inline int
 > 104	drm_of_lvds_get_data_mapping(const struct device_node *port);
   105	{
   106		return -EINVAL;
   107	}
   108	#endif
   109	

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