[kbuild-all] drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:687:6: warning: variable 'ret' set but not used

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 69119673bd50b176ded34032fadd41530fb5af21 commit: 1b61de45dfaff00b627e47349a019658e39268b9 drm/amdgpu: add initial VCN2.0 support (v2) date: 12 months ago config: ia64-randconfig-r012-20200617 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 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 git checkout 1b61de45dfaff00b627e47349a019658e39268b9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 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 >>, old ones prefixed by <<): drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c: In function 'vcn_v2_0_disable_static_power_gating': 687 | int ret; | ^~~ drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c: In function 'vcn_v2_0_enable_static_power_gating': drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:736:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 736 | int ret; | ^~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:29, from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:30, from drivers/gpu/drm/amd/amdgpu/../include/dm_pp_interface.h:26, from drivers/gpu/drm/amd/amdgpu/amdgpu.h:53, from drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:26: At top level: drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=] 76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL }; | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=] 75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL }; | ^~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=] 74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL }; | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=] 73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL }; | ^~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=] 72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL }; | ^~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=] 67 | static const struct fixed31_32 dc_fixpt_zero = { 0 }; | ^~~~~~~~~~~~~ vim +/ret +687 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c 683 684 static void vcn_v2_0_disable_static_power_gating(struct amdgpu_device *adev) 685 { 686 uint32_t data = 0; 688 689 if (adev->pg_flags & AMD_PG_SUPPORT_VCN) { 690 data = (1 << UVD_PGFSM_CONFIG__UVDM_PWR_CONFIG__SHIFT 691 | 1 << UVD_PGFSM_CONFIG__UVDU_PWR_CONFIG__SHIFT 692 | 2 << UVD_PGFSM_CONFIG__UVDF_PWR_CONFIG__SHIFT 693 | 2 << UVD_PGFSM_CONFIG__UVDC_PWR_CONFIG__SHIFT 694 | 2 << UVD_PGFSM_CONFIG__UVDB_PWR_CONFIG__SHIFT 695 | 2 << UVD_PGFSM_CONFIG__UVDIL_PWR_CONFIG__SHIFT 696 | 2 << UVD_PGFSM_CONFIG__UVDIR_PWR_CONFIG__SHIFT 697 | 2 << UVD_PGFSM_CONFIG__UVDTD_PWR_CONFIG__SHIFT 698 | 2 << UVD_PGFSM_CONFIG__UVDTE_PWR_CONFIG__SHIFT 699 | 2 << UVD_PGFSM_CONFIG__UVDE_PWR_CONFIG__SHIFT 700 | 2 << UVD_PGFSM_CONFIG__UVDW_PWR_CONFIG__SHIFT); 701 702 WREG32_SOC15(VCN, 0, mmUVD_PGFSM_CONFIG, data); 703 SOC15_WAIT_ON_RREG(VCN, 0, mmUVD_PGFSM_STATUS, 704 UVD_PGFSM_STATUS__UVDM_UVDU_PWR_ON, 0xFFFFFF, ret); 705 } else { 706 data = (1 << UVD_PGFSM_CONFIG__UVDM_PWR_CONFIG__SHIFT 707 | 1 << UVD_PGFSM_CONFIG__UVDU_PWR_CONFIG__SHIFT 708 | 1 << UVD_PGFSM_CONFIG__UVDF_PWR_CONFIG__SHIFT 709 | 1 << UVD_PGFSM_CONFIG__UVDC_PWR_CONFIG__SHIFT 710 | 1 << UVD_PGFSM_CONFIG__UVDB_PWR_CONFIG__SHIFT 711 | 1 << UVD_PGFSM_CONFIG__UVDIL_PWR_CONFIG__SHIFT 712 | 1 << UVD_PGFSM_CONFIG__UVDIR_PWR_CONFIG__SHIFT 713 | 1 << UVD_PGFSM_CONFIG__UVDTD_PWR_CONFIG__SHIFT 714 | 1 << UVD_PGFSM_CONFIG__UVDTE_PWR_CONFIG__SHIFT 715 | 1 << UVD_PGFSM_CONFIG__UVDE_PWR_CONFIG__SHIFT 716 | 1 << UVD_PGFSM_CONFIG__UVDW_PWR_CONFIG__SHIFT); 717 WREG32_SOC15(VCN, 0, mmUVD_PGFSM_CONFIG, data); 718 SOC15_WAIT_ON_RREG(VCN, 0, mmUVD_PGFSM_STATUS, 0, 0xFFFFFFFF, ret); 719 } 720 721 /* polling UVD_PGFSM_STATUS to confirm UVDM_PWR_STATUS, 722 * UVDU_PWR_STATUS are 0 (power on) */ 723 724 data = RREG32_SOC15(VCN, 0, mmUVD_POWER_STATUS); 725 data &= ~0x103; 726 if (adev->pg_flags & AMD_PG_SUPPORT_VCN) 727 data |= UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON | 728 UVD_POWER_STATUS__UVD_PG_EN_MASK; 729 730 WREG32_SOC15(VCN, 0, mmUVD_POWER_STATUS, data); 731 } 732 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org