[kbuild-all] drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:1568:6: warning: no previous prototype for 'gfx_v10_0_rlc_stop'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 69119673bd50b176ded34032fadd41530fb5af21 commit: c6b6a42175f5d36d8e7f85afb8acb6559210641e drm/amdgpu: add navi10 common ip block (v3) 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 c6b6a42175f5d36d8e7f85afb8acb6559210641e # 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 <<): 1568 | void gfx_v10_0_rlc_stop(struct amdgpu_device *adev) | ^~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:25: drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c: In function 'gfx_v10_0_set_gfx_eop_interrupt_state': drivers/gpu/drm/amd/amdgpu/amdgpu.h:1027:24: warning: this statement may fall through [-Wimplicit-fallthrough=] 1027 | #define WREG32(reg, v) amdgpu_mm_wreg(adev, (reg), (v), 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4568:3: note: in expansion of macro 'WREG32' 4568 | WREG32(cp_int_cntl_reg, cp_int_cntl); | ^~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4569:2: note: here 4569 | case AMDGPU_IRQ_STATE_ENABLE: | ^~~~ 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/gfx_v10_0.c:25: 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 +/gfx_v10_0_rlc_stop +1568 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c a644d85a5cd4ef Hawking Zhang 2019-03-04 1567 a644d85a5cd4ef Hawking Zhang 2019-03-04 @1568 void gfx_v10_0_rlc_stop(struct amdgpu_device *adev) a644d85a5cd4ef Hawking Zhang 2019-03-04 1569 { a644d85a5cd4ef Hawking Zhang 2019-03-04 1570 u32 tmp = RREG32_SOC15(GC, 0, mmRLC_CNTL); a644d85a5cd4ef Hawking Zhang 2019-03-04 1571 a644d85a5cd4ef Hawking Zhang 2019-03-04 1572 tmp = REG_SET_FIELD(tmp, RLC_CNTL, RLC_ENABLE_F32, 0); a644d85a5cd4ef Hawking Zhang 2019-03-04 1573 WREG32_SOC15(GC, 0, mmRLC_CNTL, tmp); a644d85a5cd4ef Hawking Zhang 2019-03-04 1574 a644d85a5cd4ef Hawking Zhang 2019-03-04 1575 gfx_v10_0_enable_gui_idle_interrupt(adev, false); a644d85a5cd4ef Hawking Zhang 2019-03-04 1576 } a644d85a5cd4ef Hawking Zhang 2019-03-04 1577 :::::: The code at line 1568 was first introduced by commit :::::: a644d85a5cd4efbb1eb62751ef8a98a70d9794bc drm/amdgpu: add gfx v10 implementation (v10) :::::: TO: Hawking Zhang <Hawking.Zhang(a)amd.com&gt; :::::: CC: Alex Deucher <alexander.deucher(a)amd.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org