[kbuild-all] drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:225:10: warning: comparison of unsigned expression < 0 is always false

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 69119673bd50b176ded34032fadd41530fb5af21 commit: 80381d40c9bf5218db06a7d7246c5478c95987ee drm/amd/powerplay: fix pre-check condition for setting clock range date: 3 months ago config: ia64-randconfig-r003-20200617 (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 80381d40c9bf5218db06a7d7246c5478c95987ee # 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 <<): In file included from arch/ia64/include/asm/pgtable.h:154, from include/linux/mm.h:94, from arch/ia64/include/asm/uaccess.h:38, from include/linux/uaccess.h:11, from arch/ia64/include/asm/sections.h:11, from include/linux/interrupt.h:20, from include/linux/pci.h:38, from drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:24: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:137:41: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 137 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c: In function 'smu_set_soft_freq_range': 225 | if (min < 0 && max < 0) | ^ drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:225:21: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 225 | if (min < 0 && max < 0) | ^ drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c: At top level: drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:1703:5: warning: no previous prototype for 'smu_adjust_power_state_dynamic' [-Wmissing-prototypes] 1703 | int smu_adjust_power_state_dynamic(struct smu_context *smu, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:31: drivers/gpu/drm/amd/amdgpu/../powerplay/inc/smu_v11_0.h:68:43: warning: 'smu11_thermal_policy' defined but not used [-Wunused-const-variable=] 68 | static const struct smu_temperature_range smu11_thermal_policy[] = | ^~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:27: drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:177:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=] 177 | static const int sched_policy = KFD_SCHED_POLICY_HWS; | ^~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:33, 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/amdgpu.h:53, from drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:27: 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 +225 drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c 219 220 int smu_set_soft_freq_range(struct smu_context *smu, enum smu_clk_type clk_type, 221 uint32_t min, uint32_t max) 222 { 223 int ret = 0; 224 226 return -EINVAL; 227 228 if (!smu_clk_dpm_is_enabled(smu, clk_type)) 229 return 0; 230 231 ret = smu_set_soft_freq_limited_range(smu, clk_type, min, max); 232 return ret; 233 } 234 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org