tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5469f0c06732a077c70a759a81f2a1f00b277694 commit: 71199aa47bbccef3eda9940dc6d457ed0268f7d2 [7400/7959] drm/amdgpu: add soc21 common ip block v2 config: alpha-buildonly-randconfig-r003-20220428 (https://download.01.org/0day-ci/archive/20220429/202204292023.lorNXF5U-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 11.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=71199aa47bbccef3eda9940dc6d457ed0268f7d2 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 71199aa47bbccef3eda9940dc6d457ed0268f7d2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/ 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/soc21.c:128:6: warning: no previous prototype for 'soc21_grbm_select' [-Wmissing-prototypes] 128 | void soc21_grbm_select(struct amdgpu_device *adev, | ^~~~~~~~~~~~~~~~~ vim +/soc21_grbm_select +128 drivers/gpu/drm/amd/amdgpu/soc21.c 126 127 > 128 void soc21_grbm_select(struct amdgpu_device *adev, 129 u32 me, u32 pipe, u32 queue, u32 vmid) 130 { 131 u32 grbm_gfx_cntl = 0; 132 grbm_gfx_cntl = REG_SET_FIELD(grbm_gfx_cntl, GRBM_GFX_CNTL, PIPEID, pipe); 133 grbm_gfx_cntl = REG_SET_FIELD(grbm_gfx_cntl, GRBM_GFX_CNTL, MEID, me); 134 grbm_gfx_cntl = REG_SET_FIELD(grbm_gfx_cntl, GRBM_GFX_CNTL, VMID, vmid); 135 grbm_gfx_cntl = REG_SET_FIELD(grbm_gfx_cntl, GRBM_GFX_CNTL, QUEUEID, queue); 136 137 WREG32(SOC15_REG_OFFSET(GC, 0, regGRBM_GFX_CNTL), grbm_gfx_cntl); 138 } 139 -- 0-DAY CI Kernel Test Service https://01.org/lkp