[agd5f:drm-next 523/573] drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c:206:5: warning: no previous prototype for function 'smu_v13_0_7_check_fw_status'

[kernel test robot]

tree:   https://gitlab.freedesktop.org/agd5f/linux.git drm-next
head:   e7b25ac8f27f561894f8f65caec0dfafed3ddbb5
commit: 113cc31dde66e3153f7290141b6c008dce8ab2bf [523/573] drm/amd/pm: add SMU_13_0_7 ppt_funcs for SMU_13_0_7
config: arm64-randconfig-r006-20220505 (https://download.01.org/0day-ci/archive/20220506/202205061407.MF1Stxst-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e004fb787698440a387750db7f8028e7cb14cfc)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git
        git fetch --no-tags agd5f drm-next
        git checkout 113cc31dde66e3153f7290141b6c008dce8ab2bf
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c:206:5: warning: no previous prototype for function 'smu_v13_0_7_check_fw_status' [-Wmissing-prototypes]
   int smu_v13_0_7_check_fw_status(struct smu_context *smu) {
       ^
   drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c:206:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int smu_v13_0_7_check_fw_status(struct smu_context *smu) {
   ^
   static 
   drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c:281:24: warning: unused variable 'adev' [-Wunused-variable]
           struct amdgpu_device *adev = smu->adev;
                                 ^
   drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c:359:24: warning: unused variable 'adev' [-Wunused-variable]
           struct amdgpu_device *adev = smu->adev;
                                 ^
   drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c:464:24: warning: unused variable 'adev' [-Wunused-variable]
           struct amdgpu_device *adev = smu->adev;
                                 ^
   4 warnings generated.


vim +/smu_v13_0_7_check_fw_status +206 drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/smu_v13_0_7_ppt.c

   205	
 > 206	int smu_v13_0_7_check_fw_status(struct smu_context *smu) {
   207		struct amdgpu_device *adev = smu->adev;
   208		uint32_t mp1_fw_flags;
   209	
   210		mp1_fw_flags = RREG32_PCIE(MP1_Public |
   211					   (smnMP1_FIRMWARE_FLAGS_SMU_13_0_7 & 0xffffffff));
   212	
   213		if ((mp1_fw_flags & MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED_MASK) >>
   214				MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED__SHIFT)
   215			return 0;
   216	
   217		return -EIO;
   218	}
   219	

-- 
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https://01.org/lkp