tree: git://people.freedesktop.org/~agd5f/linux.git drm-next-4.19-wip head: 69c20a808c86d7fd6cd64a9c8cc6b024a88c45fa commit: fcad2435f489c3510cc95f6a38ff7db2f6292b6f [47/115] drm/amd/powerplay: Set higher SCLK&MCLK frequency than dpm7 in OD config: x86_64-randconfig-s2-06141023 (attached as .config) compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026 reproduce: git checkout fcad2435f489c3510cc95f6a38ff7db2f6292b6f # save the attached .config to linux build tree make ARCH=x86_64

Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c: In function 'smu7_set_power_state_tasks':

...

drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:3769:5: warning: 'result' may be used uninitialized in this function [-Wmaybe-uninitialized]

if (result) ^ drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:3758:6: note: 'result' was declared here int result; ^~~~~~

vim +/result +3769 drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c

599a7e9f Rex Zhu 2016-09-09 3754 599a7e9f Rex Zhu 2016-09-09 3755 static int smu7_generate_dpm_level_enable_mask( 599a7e9f Rex Zhu 2016-09-09 3756 struct pp_hwmgr *hwmgr, const void *input) 599a7e9f Rex Zhu 2016-09-09 3757 { 599a7e9f Rex Zhu 2016-09-09 3758 int result; 599a7e9f Rex Zhu 2016-09-09 3759 const struct phm_set_power_state_input *states = 599a7e9f Rex Zhu 2016-09-09 3760 (const struct phm_set_power_state_input *)input; 599a7e9f Rex Zhu 2016-09-09 3761 struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend); 599a7e9f Rex Zhu 2016-09-09 3762 const struct smu7_power_state *smu7_ps = 599a7e9f Rex Zhu 2016-09-09 3763 cast_const_phw_smu7_power_state(states->pnew_state); 599a7e9f Rex Zhu 2016-09-09 3764 fcad2435 Kenneth Feng 2018-06-12 3765 /*skip the trim if od is enabled*/ fcad2435 Kenneth Feng 2018-06-12 3766 if (!hwmgr->od_enabled) 599a7e9f Rex Zhu 2016-09-09 3767 result = smu7_trim_dpm_states(hwmgr, smu7_ps); fcad2435 Kenneth Feng 2018-06-12 3768 599a7e9f Rex Zhu 2016-09-09 @3769 if (result) 599a7e9f Rex Zhu 2016-09-09 3770 return result; 599a7e9f Rex Zhu 2016-09-09 3771 599a7e9f Rex Zhu 2016-09-09 3772 data->dpm_level_enable_mask.sclk_dpm_enable_mask = 599a7e9f Rex Zhu 2016-09-09 3773 phm_get_dpm_level_enable_mask_value(&data->dpm_table.sclk_table); 599a7e9f Rex Zhu 2016-09-09 3774 data->dpm_level_enable_mask.mclk_dpm_enable_mask = 599a7e9f Rex Zhu 2016-09-09 3775 phm_get_dpm_level_enable_mask_value(&data->dpm_table.mclk_table); 599a7e9f Rex Zhu 2016-09-09 3776 data->dpm_level_enable_mask.pcie_dpm_enable_mask = 599a7e9f Rex Zhu 2016-09-09 3777 phm_get_dpm_level_enable_mask_value(&data->dpm_table.pcie_speed_table); 599a7e9f Rex Zhu 2016-09-09 3778 599a7e9f Rex Zhu 2016-09-09 3779 return 0; 599a7e9f Rex Zhu 2016-09-09 3780 } 599a7e9f Rex Zhu 2016-09-09 3781

:::::: The code at line 3769 was first introduced by commit :::::: 599a7e9fe1b683d04f889d68f866f5548b1e0239 drm/amd/powerplay: implement smu7 hwmgr to manager asics with smu ip version 7.

:::::: TO: Rex Zhu Rex.Zhu@amd.com :::::: CC: Alex Deucher alexander.deucher@amd.com

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