[radeon-alex:amd-20.45 1953/2427] drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dce60/dce60_clk_mgr.c:83:5: warning: no previous prototype for function 'dce60_get_dp_ref_freq_khz'

[kernel test robot]

tree:   git://people.freedesktop.org/~agd5f/linux.git amd-20.45
head:   a3950d94b046fb206e58fd3ec717f071c0203ba3
commit: e809646e73921328d66a2fbfddf067b9cdb30998 [1953/2427] drm/amd/display: enable SI support in the Kconfig (v2)
config: x86_64-randconfig-a001-20201214 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project a29ecca7819a6ed4250d3689b12b1f664bb790d7)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git remote add radeon-alex git://people.freedesktop.org/~agd5f/linux.git
        git fetch --no-tags radeon-alex amd-20.45
        git checkout e809646e73921328d66a2fbfddf067b9cdb30998
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dce60/dce60_clk_mgr.c:83:5: warning: no previous prototype for function 'dce60_get_dp_ref_freq_khz' [-Wmissing-prototypes]
   int dce60_get_dp_ref_freq_khz(struct clk_mgr *clk_mgr_base)
       ^
   drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dce60/dce60_clk_mgr.c:83:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int dce60_get_dp_ref_freq_khz(struct clk_mgr *clk_mgr_base)
   ^
   static 
   1 warning generated.

vim +/dce60_get_dp_ref_freq_khz +83 drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dce60/dce60_clk_mgr.c

2428ad5c6ece1a6 Mauro Rossi 2020-07-11   82  
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  @83  int dce60_get_dp_ref_freq_khz(struct clk_mgr *clk_mgr_base)
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   84  {
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   85  	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   86  	int dprefclk_wdivider;
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   87  	int dp_ref_clk_khz;
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   88  	int target_div;
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   89  
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   90  	/* DCE6 has no DPREFCLK_CNTL to read DP Reference Clock source */
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   91  
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   92  	/* Read the mmDENTIST_DISPCLK_CNTL to get the currently
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   93  	 * programmed DID DENTIST_DPREFCLK_WDIVIDER*/
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   94  	REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DPREFCLK_WDIVIDER, &dprefclk_wdivider);
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   95  
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   96  	/* Convert DENTIST_DPREFCLK_WDIVIDERto actual divider*/
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   97  	target_div = dentist_get_divider_from_did(dprefclk_wdivider);
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   98  
2428ad5c6ece1a6 Mauro Rossi 2020-07-11   99  	/* Calculate the current DFS clock, in kHz.*/
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  100  	dp_ref_clk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  101  		* clk_mgr->base.dentist_vco_freq_khz) / target_div;
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  102  
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  103  	return dce_adjust_dp_ref_freq_for_ss(clk_mgr, dp_ref_clk_khz);
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  104  }
2428ad5c6ece1a6 Mauro Rossi 2020-07-11  105  

:::::: The code at line 83 was first introduced by commit
:::::: 2428ad5c6ece1a6861278c01c5e71c8ea258f3d9 drm/amd/display: dc/clk_mgr: add support for SI parts (v2)

:::::: TO: Mauro Rossi <issor.oruam at gmail.com>
:::::: CC: Yang Xiong <Yang.Xiong at amd.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
-------------- next part --------------
A non-text attachment was scrubbed...
Name: .config.gz
Type: application/gzip
Size: 29056 bytes
Desc: not available
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20201215/9963881f/attachment-0001.gz>