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

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

[kernel test robot]

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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@intel.com>

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':
>> drivers/gpu/drm/amd/amdgpu/../powerplay/amdgpu_smu.c:225:10: 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: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	
 > 225		if (min < 0 && max < 0)
   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

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