linux-kernel - [drm-misc:drm-misc-next 1106/1116] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6622:2: error: call to undeclared function 'crtc_debugfs_init'; ISO C99 and later do not support implicit function declarations

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Date:   Tue, 24 May 2022 18:17:57 +0800
From:   kernel test robot <lkp@...el.com>
To:     Bhanuprakash Modem <bhanuprakash.modem@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Jani Nikula <jani.nikula@...el.com>,
        Arun R Murthy <arun.r.murthy@...el.com>,
        Harry Wentland <harry.wentland@....com>
Subject: [drm-misc:drm-misc-next 1106/1116]
 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6622:2: error:
 call to undeclared function 'crtc_debugfs_init'; ISO C99 and later do not
 support implicit function declarations

tree:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head:   1a3b1ea111c44d9dce9f70ba032531a223395a15
commit: 4cd79f614b501e496ee8e4181d528c0cc1cb4e18 [1106/1116] drm/amd/display: Move connector debugfs to drm
config: arm64-randconfig-r001-20220524 (https://download.01.org/0day-ci/archive/20220524/202205241843.8EWKesIA-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 10c9ecce9f6096e18222a331c5e7d085bd813f75)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        git remote add drm-misc git://anongit.freedesktop.org/drm/drm-misc
        git fetch --no-tags drm-misc drm-misc-next
        git checkout 4cd79f614b501e496ee8e4181d528c0cc1cb4e18
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6622:2: error: call to undeclared function 'crtc_debugfs_init'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           crtc_debugfs_init(crtc);
           ^
   drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:9165:20: warning: variable 'abo' set but not used [-Wunused-but-set-variable]
           struct amdgpu_bo *abo;
                             ^
   1 warning and 1 error generated.


vim +/crtc_debugfs_init +6622 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c

e7b07ceef2a650 Harry Wentland 2017-08-10  6619  
e69231c4451ae0 Wayne Lin      2021-03-08  6620  static int amdgpu_dm_crtc_late_register(struct drm_crtc *crtc)
86bc221918925a Wayne Lin      2021-03-02  6621  {
86bc221918925a Wayne Lin      2021-03-02 @6622  	crtc_debugfs_init(crtc);
86bc221918925a Wayne Lin      2021-03-02  6623  
86bc221918925a Wayne Lin      2021-03-02  6624  	return 0;
86bc221918925a Wayne Lin      2021-03-02  6625  }
86bc221918925a Wayne Lin      2021-03-02  6626  

:::::: The code at line 6622 was first introduced by commit
:::::: 86bc221918925a0bbb49043e3936e898e009b43b drm/amd/display: Support crc on specific region

:::::: TO: Wayne Lin <Wayne.Lin@....com>
:::::: CC: Alex Deucher <alexander.deucher@....com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp