[PATCH 2/5] drm/debugfs: rework debugfs directory creation v3

[kernel test robot]

Hi Christian,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on drm-intel/for-linux-next drm-intel/for-linux-next-fixes tegra/for-next linus/master v6.3-rc6 next-20230412]
[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/Christian-K-nig/drm-debugfs-rework-debugfs-directory-creation-v3/20230412-235231
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20230412145206.2483-3-christian.koenig%40amd.com
patch subject: [PATCH 2/5] drm/debugfs: rework debugfs directory creation v3
config: arc-randconfig-r043-20230413 (https://download.01.org/0day-ci/archive/20230413/202304131935.9BjNzso4-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/92a7a4f0fd59d427c5827c323692b76095f90efc
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Christian-K-nig/drm-debugfs-rework-debugfs-directory-creation-v3/20230412-235231
        git checkout 92a7a4f0fd59d427c5827c323692b76095f90efc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/gpu/drm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304131935.9BjNzso4-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/drm_drv.c: In function 'drm_dev_unregister':
>> drivers/gpu/drm/drm_drv.c:1011:9: error: implicit declaration of function 'drm_debugfs_dev_fini'; did you mean 'drm_debugfs_dev_init'? [-Werror=implicit-function-declaration]
    1011 |         drm_debugfs_dev_fini(dev);
         |         ^~~~~~~~~~~~~~~~~~~~
         |         drm_debugfs_dev_init
   cc1: some warnings being treated as errors


vim +1011 drivers/gpu/drm/drm_drv.c

   974	
   975	/**
   976	 * drm_dev_unregister - Unregister DRM device
   977	 * @dev: Device to unregister
   978	 *
   979	 * Unregister the DRM device from the system. This does the reverse of
   980	 * drm_dev_register() but does not deallocate the device. The caller must call
   981	 * drm_dev_put() to drop their final reference.
   982	 *
   983	 * A special form of unregistering for hotpluggable devices is drm_dev_unplug(),
   984	 * which can be called while there are still open users of @dev.
   985	 *
   986	 * This should be called first in the device teardown code to make sure
   987	 * userspace can't access the device instance any more.
   988	 */
   989	void drm_dev_unregister(struct drm_device *dev)
   990	{
   991		if (drm_core_check_feature(dev, DRIVER_LEGACY))
   992			drm_lastclose(dev);
   993	
   994		dev->registered = false;
   995	
   996		drm_client_dev_unregister(dev);
   997	
   998		if (drm_core_check_feature(dev, DRIVER_MODESET))
   999			drm_modeset_unregister_all(dev);
  1000	
  1001		if (dev->driver->unload)
  1002			dev->driver->unload(dev);
  1003	
  1004		drm_legacy_pci_agp_destroy(dev);
  1005		drm_legacy_rmmaps(dev);
  1006	
  1007		remove_compat_control_link(dev);
  1008		drm_minor_unregister(dev, DRM_MINOR_ACCEL);
  1009		drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
  1010		drm_minor_unregister(dev, DRM_MINOR_RENDER);
> 1011		drm_debugfs_dev_fini(dev);
  1012	}
  1013	EXPORT_SYMBOL(drm_dev_unregister);
  1014	

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