[kbuild-all] drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_hw_sequencer.c:661:6: warning: no previous prototype for 'dce110_enable_stream'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e26dd976580a6a427c69e6116508dd3d412742e5 commit: 4d45a22458f52a3daf222287d9e578d3ec418422 drm: display: Remove duplicate include in dce110 date: 5 months ago config: microblaze-buildonly-randconfig-r004-20210927 (attached as .config) compiler: microblaze-linux-gcc (GCC) 11.2.0 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 4d45a22458f52a3daf222287d9e578d3ec418422 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze 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 >>): 661 | void dce110_enable_stream(struct pipe_ctx *pipe_ctx) | ^~~~~~~~~~~~~~~~~~~~ 1133 | void dce110_disable_stream(struct pipe_ctx *pipe_ctx) | ^~~~~~~~~~~~~~~~~~~~~ 1159 | void dce110_unblank_stream(struct pipe_ctx *pipe_ctx, | ^~~~~~~~~~~~~~~~~~~~~ 1785 | void dce110_set_safe_displaymarks( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2566 | void dce110_prepare_bandwidth( | ^~~~~~~~~~~~~~~~~~~~~~~~ 2580 | void dce110_optimize_bandwidth( | ^~~~~~~~~~~~~~~~~~~~~~~~~ 2863 | bool dce110_set_backlight_level(struct pipe_ctx *pipe_ctx, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ 2897 | void dce110_set_abm_immediate_disable(struct pipe_ctx *pipe_ctx) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2910 | void dce110_set_pipe(struct pipe_ctx *pipe_ctx) | ^~~~~~~~~~~~~~~ 2976 | void dce110_hw_sequencer_construct(struct dc *dc) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/dce110_enable_stream +661 drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_hw_sequencer.c 4562236b3bc0a2 Harry Wentland 2017-09-12 660 4562236b3bc0a2 Harry Wentland 2017-09-12 @661 void dce110_enable_stream(struct pipe_ctx *pipe_ctx) 4562236b3bc0a2 Harry Wentland 2017-09-12 662 { 4562236b3bc0a2 Harry Wentland 2017-09-12 663 enum dc_lane_count lane_count = ceb3dbb4690db8 Jun Lei 2018-11-09 664 pipe_ctx->stream->link->cur_link_settings.lane_count; 4fa086b9b66408 Leo (Sunpeng Li 2017-07-25 665) struct dc_crtc_timing *timing = &pipe_ctx->stream->timing; ceb3dbb4690db8 Jun Lei 2018-11-09 666 struct dc_link *link = pipe_ctx->stream->link; f42ea55be11147 Anthony Koo 2019-11-05 667 const struct dc *dc = link->dc; f215a57dca691c Eric Yang 2018-02-21 668 4562236b3bc0a2 Harry Wentland 2017-09-12 669 uint32_t active_total_with_borders; 4562236b3bc0a2 Harry Wentland 2017-09-12 670 uint32_t early_control = 0; 6b670fa965b620 Harry Wentland 2017-07-30 671 struct timing_generator *tg = pipe_ctx->stream_res.tg; 4562236b3bc0a2 Harry Wentland 2017-09-12 672 f215a57dca691c Eric Yang 2018-02-21 673 /* For MST, there are multiply stream go to only one link. f215a57dca691c Eric Yang 2018-02-21 674 * connect DIG back_end to front_end while enable_stream and f215a57dca691c Eric Yang 2018-02-21 675 * disconnect them during disable_stream f215a57dca691c Eric Yang 2018-02-21 676 * BY this, it is logic clean to separate stream and link */ f215a57dca691c Eric Yang 2018-02-21 677 link->link_enc->funcs->connect_dig_be_to_fe(link->link_enc, f215a57dca691c Eric Yang 2018-02-21 678 pipe_ctx->stream_res.stream_enc->id, true); f215a57dca691c Eric Yang 2018-02-21 679 f42ea55be11147 Anthony Koo 2019-11-05 680 dc->hwss.update_info_frame(pipe_ctx); f215a57dca691c Eric Yang 2018-02-21 681 4562236b3bc0a2 Harry Wentland 2017-09-12 682 /* enable early control to avoid corruption on DP monitor*/ 4562236b3bc0a2 Harry Wentland 2017-09-12 683 active_total_with_borders = 4562236b3bc0a2 Harry Wentland 2017-09-12 684 timing->h_addressable 4562236b3bc0a2 Harry Wentland 2017-09-12 685 + timing->h_border_left 4562236b3bc0a2 Harry Wentland 2017-09-12 686 + timing->h_border_right; 4562236b3bc0a2 Harry Wentland 2017-09-12 687 4562236b3bc0a2 Harry Wentland 2017-09-12 688 if (lane_count != 0) 4562236b3bc0a2 Harry Wentland 2017-09-12 689 early_control = active_total_with_borders % lane_count; 4562236b3bc0a2 Harry Wentland 2017-09-12 690 4562236b3bc0a2 Harry Wentland 2017-09-12 691 if (early_control == 0) 4562236b3bc0a2 Harry Wentland 2017-09-12 692 early_control = lane_count; 4562236b3bc0a2 Harry Wentland 2017-09-12 693 4562236b3bc0a2 Harry Wentland 2017-09-12 694 tg->funcs->set_early_control(tg, early_control); 4562236b3bc0a2 Harry Wentland 2017-09-12 695 4562236b3bc0a2 Harry Wentland 2017-09-12 696 /* enable audio only within mode set */ afaacef4827592 Harry Wentland 2017-07-30 697 if (pipe_ctx->stream_res.audio != NULL) { 4562236b3bc0a2 Harry Wentland 2017-09-12 698 if (dc_is_dp_signal(pipe_ctx->stream->signal)) 8e9c4c8cf35ff2 Harry Wentland 2017-07-30 699 pipe_ctx->stream_res.stream_enc->funcs->dp_audio_enable(pipe_ctx->stream_res.stream_enc); 4562236b3bc0a2 Harry Wentland 2017-09-12 700 } 4562236b3bc0a2 Harry Wentland 2017-09-12 701 f215a57dca691c Eric Yang 2018-02-21 702 f215a57dca691c Eric Yang 2018-02-21 703 4562236b3bc0a2 Harry Wentland 2017-09-12 704 :::::: The code at line 661 was first introduced by commit :::::: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c drm/amd/dc: Add dc display driver (v2) :::::: TO: Harry Wentland <harry.wentland(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