tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4c43049f19a280329c1d01699f3cc8ad6910cbbe commit: 1bdcc35f7767988d49e55c6e44b80da666067f8b [7506/8581] drm/amd/display: reduce sr_xxx_time by 3 us when ppt disable config: powerpc64-randconfig-r003-20200716 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ed6b578040a85977026c93bf4188f996148f3218) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu git checkout 1bdcc35f7767988d49e55c6e44b80da666067f8b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:89:5: warning: no previous prototype for function 'rn_vbios_smu_send_msg_with_param' [-Wmissing-prototypes] int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, unsigned int msg_id, unsigned int param) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:89:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, unsigned int msg_id, unsigned int param) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:110:5: warning: no previous prototype for function 'rn_vbios_smu_get_smu_version' [-Wmissing-prototypes] int rn_vbios_smu_get_smu_version(struct clk_mgr_internal *clk_mgr) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:110:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_get_smu_version(struct clk_mgr_internal *clk_mgr) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:119:5: warning: no previous prototype for function 'rn_vbios_smu_set_dispclk' [-Wmissing-prototypes] int rn_vbios_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:119:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:142:5: warning: no previous prototype for function 'rn_vbios_smu_set_dprefclk' [-Wmissing-prototypes] int rn_vbios_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:142:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:156:5: warning: no previous prototype for function 'rn_vbios_smu_set_hard_min_dcfclk' [-Wmissing-prototypes] int rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:156:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:171:5: warning: no previous prototype for function 'rn_vbios_smu_set_min_deep_sleep_dcfclk' [-Wmissing-prototypes] int rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:171:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:186:6: warning: no previous prototype for function 'rn_vbios_smu_set_phyclk' [-Wmissing-prototypes] void rn_vbios_smu_set_phyclk(struct clk_mgr_internal *clk_mgr, int requested_phyclk_khz) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:186:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void rn_vbios_smu_set_phyclk(struct clk_mgr_internal *clk_mgr, int requested_phyclk_khz) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:194:5: warning: no previous prototype for function 'rn_vbios_smu_set_dppclk' [-Wmissing-prototypes] int rn_vbios_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:194:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:206:6: warning: no previous prototype for function 'rn_vbios_smu_set_dcn_low_power_state' [-Wmissing-prototypes] void rn_vbios_smu_set_dcn_low_power_state(struct clk_mgr_internal *clk_mgr, enum dcn_pwr_state state) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:206:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void rn_vbios_smu_set_dcn_low_power_state(struct clk_mgr_internal *clk_mgr, enum dcn_pwr_state state) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:221:6: warning: no previous prototype for function 'rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn' [-Wmissing-prototypes] void rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:221:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable) ^ static drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:229:6: warning: no previous prototype for function 'rn_vbios_smu_enable_pme_wa' [-Wmissing-prototypes] void rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:229:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr) ^ static int rn_vbios_smu_is_periodic_retraining_disabled(struct clk_mgr_internal *clk_mgr) ^ drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c:237:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int rn_vbios_smu_is_periodic_retraining_disabled(struct clk_mgr_internal *clk_mgr) ^ static 12 warnings generated. vim +/rn_vbios_smu_is_periodic_retraining_disabled +237 drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c 236 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org