Hi Jason-JH.Lin,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v6.4-rc7 next-20230620]
[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#_base_tree_information]

url:    
https://github.com/intel-lab-lkp/linux/commits/Jason-JH-Lin/drm-mediatek-Fix-void-pointer-to-enum-cast-warning/20230620-182906
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    
https://lore.kernel.org/r/20230620102804.17585-1-jason-jh.lin%40mediatek.com
patch subject: [PATCH] drm/mediatek: Fix void-pointer-to-enum-cast warning
config: arm-allmodconfig 
(https://download.01.org/0day-ci/archive/20230621/[email protected]/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.3.0
reproduce: 
(https://download.01.org/0day-ci/archive/20230621/[email protected]/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 <[email protected]>
| Closes: 
https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c: In function 
'ovl_adaptor_comp_init':
>> drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c:429:24: error: incompatible 
>> types when assigning to type 'enum mtk_ovl_adaptor_comp_type' from type 
>> 'const void *'
     429 |                 type = of_id->data;
         |                        ^~~~~
--
   drivers/gpu/drm/mediatek/mtk_drm_drv.c: In function 'mtk_drm_probe':
>> drivers/gpu/drm/mediatek/mtk_drm_drv.c:831:29: error: incompatible types 
>> when assigning to type 'enum mtk_ddp_comp_type' from type 'const void *'
     831 |                 comp_type = of_id->data;
         |                             ^~~~~


vim +429 drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c

   405  
   406  static int ovl_adaptor_comp_init(struct device *dev, struct 
component_match **match)
   407  {
   408          struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
   409          struct device_node *node, *parent;
   410          struct platform_device *comp_pdev;
   411  
   412          parent = dev->parent->parent->of_node->parent;
   413  
   414          for_each_child_of_node(parent, node) {
   415                  const struct of_device_id *of_id;
   416                  enum mtk_ovl_adaptor_comp_type type;
   417                  int id;
   418  
   419                  of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, 
node);
   420                  if (!of_id)
   421                          continue;
   422  
   423                  if (!of_device_is_available(node)) {
   424                          dev_dbg(dev, "Skipping disabled component 
%pOF\n",
   425                                  node);
   426                          continue;
   427                  }
   428  
 > 429                  type = of_id->data;
   430                  id = ovl_adaptor_comp_get_id(dev, node, type);
   431                  if (id < 0) {
   432                          dev_warn(dev, "Skipping unknown component 
%pOF\n",
   433                                   node);
   434                          continue;
   435                  }
   436  
   437                  comp_pdev = of_find_device_by_node(node);
   438                  if (!comp_pdev)
   439                          return -EPROBE_DEFER;
   440  
   441                  priv->ovl_adaptor_comp[id] = &comp_pdev->dev;
   442  
   443                  drm_of_component_match_add(dev, match, compare_of, 
node);
   444                  dev_dbg(dev, "Adding component match for %pOF\n", node);
   445          }
   446  
   447          if (!*match) {
   448                  dev_err(dev, "No match device for ovl_adaptor\n");
   449                  return -ENODEV;
   450          }
   451  
   452          return 0;
   453  }
   454  

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https://github.com/intel/lkp-tests/wiki

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