Hello Rex Zhu,
The patch d389d607e608: "drm/amd/pp: Change voltage/clk range for OD
feature on VI" from Apr 18, 2018, leads to the following static
checker warning:
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:872 smu7_setup_voltage_range_from_vbios()
error: uninitialized symbol 'min_vddc'.
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c
857 static void smu7_setup_voltage_range_from_vbios(struct pp_hwmgr *hwmgr)
858 {
859 struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
860 struct phm_ppt_v1_clock_voltage_dependency_table *dep_sclk_table;
861 struct phm_ppt_v1_information *table_info =
862 (struct phm_ppt_v1_information *)(hwmgr->pptable);
863 uint32_t min_vddc, max_vddc;
864
865 if (!table_info)
866 return;
867
868 dep_sclk_table = table_info->vdd_dep_on_sclk;
869
870 atomctrl_get_voltage_range(hwmgr, &max_vddc, &min_vddc);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This doesn't necessarily initialize the parameters.
871
872 if (min_vddc == 0 || min_vddc > 2000
873 || min_vddc > dep_sclk_table->entries[0].vddc)
874 min_vddc = dep_sclk_table->entries[0].vddc;
875
876 if (max_vddc == 0 || max_vddc > 2000
877 || max_vddc < dep_sclk_table->entries[dep_sclk_table->count-1].vddc)
878 max_vddc = dep_sclk_table->entries[dep_sclk_table->count-1].vddc;
879
880 data->odn_dpm_table.min_vddc = min_vddc;
881 data->odn_dpm_table.max_vddc = max_vddc;
882 }
See also:
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:872 smu7_setup_voltage_range_from_vbios() error: uninitialized symbol 'min_vddc'.
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:876 smu7_setup_voltage_range_from_vbios() error: uninitialized symbol 'max_vddc'.
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vegam_smumgr.c:1588 vegam_populate_clock_stretcher_data_table() error: uninitialized symbol 'efuse'.
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vegam_smumgr.c:1725 vegam_populate_avfs_parameters() error: uninitialized symbol 'tmp'.
regards,
dan carpenter
