tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4ebf8d7649cd86c41c41bf48da4b7761da2d5009 commit: de3916c70a24e3e1bdbf6b0a77d75b069d8953d9 drm/msm/dpu: Track resources in global state date: 4 months ago config: arm-randconfig-r026-20200717 (attached as .config) compiler: arm-linux-gnueabi-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 de3916c70a24e3e1bdbf6b0a77d75b069d8953d9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 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 >>): drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c: In function 'dpu_encoder_virt_mode_set': 959 | struct msm_display_topology topology; | ^~~~~~~~ vim +/topology +959 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 946 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 947 static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc, 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 948 struct drm_display_mode *mode, 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 949 struct drm_display_mode *adj_mode) 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 950 { 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 951 struct dpu_encoder_virt *dpu_enc; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 952 struct msm_drm_private *priv; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 953 struct dpu_kms *dpu_kms; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 954 struct list_head *connector_list; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 955 struct drm_connector *conn = NULL, *conn_iter; c2ab55a68a3374 Jeykumar Sankaran 2019-02-13 956 struct drm_crtc *drm_crtc; b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 957 struct dpu_crtc_state *cstate; de3916c70a24e3 Drew Davenport 2020-02-19 958 struct dpu_global_state *global_state; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 @959 struct msm_display_topology topology; b954fa6baaca7a Drew Davenport 2020-02-19 960 struct dpu_hw_blk *hw_pp[MAX_CHANNELS_PER_ENC]; b954fa6baaca7a Drew Davenport 2020-02-19 961 struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_ENC]; b954fa6baaca7a Drew Davenport 2020-02-19 962 struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_ENC]; b954fa6baaca7a Drew Davenport 2020-02-19 963 int num_lm, num_ctl, num_pp; de3916c70a24e3 Drew Davenport 2020-02-19 964 int i, j; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 965 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 966 if (!drm_enc) { 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 967 DPU_ERROR("invalid encoder\n"); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 968 return; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 969 } 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 970 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 971 dpu_enc = to_dpu_encoder_virt(drm_enc); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 972 DPU_DEBUG_ENC(dpu_enc, "\n"); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 973 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 974 priv = drm_enc->dev->dev_private; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 975 dpu_kms = to_dpu_kms(priv->kms); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 976 connector_list = &dpu_kms->dev->mode_config.connector_list; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 977 de3916c70a24e3 Drew Davenport 2020-02-19 978 global_state = dpu_kms_get_existing_global_state(dpu_kms); de3916c70a24e3 Drew Davenport 2020-02-19 979 if (IS_ERR_OR_NULL(global_state)) { de3916c70a24e3 Drew Davenport 2020-02-19 980 DPU_ERROR("Failed to get global state"); de3916c70a24e3 Drew Davenport 2020-02-19 981 return; de3916c70a24e3 Drew Davenport 2020-02-19 982 } de3916c70a24e3 Drew Davenport 2020-02-19 983 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 984 trace_dpu_enc_mode_set(DRMID(drm_enc)); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 985 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 986 list_for_each_entry(conn_iter, connector_list, head) 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 987 if (conn_iter->encoder == drm_enc) 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 988 conn = conn_iter; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 989 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 990 if (!conn) { 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 991 DPU_ERROR_ENC(dpu_enc, "failed to find attached connector\n"); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 992 return; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 993 } else if (!conn->state) { 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 994 DPU_ERROR_ENC(dpu_enc, "invalid connector state\n"); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 995 return; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 996 } 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 997 c2ab55a68a3374 Jeykumar Sankaran 2019-02-13 998 drm_for_each_crtc(drm_crtc, drm_enc->dev) c2ab55a68a3374 Jeykumar Sankaran 2019-02-13 999 if (drm_crtc->state->encoder_mask & drm_encoder_mask(drm_enc)) c2ab55a68a3374 Jeykumar Sankaran 2019-02-13 1000 break; c2ab55a68a3374 Jeykumar Sankaran 2019-02-13 1001 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1002 topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1003 de3916c70a24e3 Drew Davenport 2020-02-19 1004 /* Query resource that have been reserved in atomic check step. */ de3916c70a24e3 Drew Davenport 2020-02-19 1005 num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, de3916c70a24e3 Drew Davenport 2020-02-19 1006 drm_enc->base.id, DPU_HW_BLK_PINGPONG, hw_pp, de3916c70a24e3 Drew Davenport 2020-02-19 1007 ARRAY_SIZE(hw_pp)); de3916c70a24e3 Drew Davenport 2020-02-19 1008 num_ctl = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, de3916c70a24e3 Drew Davenport 2020-02-19 1009 drm_enc->base.id, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl)); de3916c70a24e3 Drew Davenport 2020-02-19 1010 num_lm = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, de3916c70a24e3 Drew Davenport 2020-02-19 1011 drm_enc->base.id, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm)); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1012 b954fa6baaca7a Drew Davenport 2020-02-19 1013 for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) b954fa6baaca7a Drew Davenport 2020-02-19 1014 dpu_enc->hw_pp[i] = i < num_pp ? to_dpu_hw_pingpong(hw_pp[i]) b954fa6baaca7a Drew Davenport 2020-02-19 1015 : NULL; b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1016 b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1017 cstate = to_dpu_crtc_state(drm_crtc->state); b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1018 b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1019 for (i = 0; i < num_lm; i++) { b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1020 int ctl_idx = (i < num_ctl) ? i : (num_ctl-1); b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1021 b954fa6baaca7a Drew Davenport 2020-02-19 1022 cstate->mixers[i].hw_lm = to_dpu_hw_mixer(hw_lm[i]); b954fa6baaca7a Drew Davenport 2020-02-19 1023 cstate->mixers[i].lm_ctl = to_dpu_hw_ctl(hw_ctl[ctl_idx]); b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1024 } b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1025 b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1026 cstate->num_mixers = num_lm; b107603b4ad0f2 Jeykumar Sankaran 2019-02-13 1027 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1028 for (i = 0; i < dpu_enc->num_phys_encs; i++) { b954fa6baaca7a Drew Davenport 2020-02-19 1029 int num_blk; b954fa6baaca7a Drew Davenport 2020-02-19 1030 struct dpu_hw_blk *hw_blk[MAX_CHANNELS_PER_ENC]; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1031 struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1032 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1033 if (!dpu_enc->hw_pp[i]) { b6fadcade62704 Drew Davenport 2019-12-06 1034 DPU_ERROR_ENC(dpu_enc, b6fadcade62704 Drew Davenport 2019-12-06 1035 "no pp block assigned at idx: %d\n", i); de3916c70a24e3 Drew Davenport 2020-02-19 1036 return; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1037 } 3f4db2e2cc4128 Jeykumar Sankaran 2018-09-05 1038 3f4db2e2cc4128 Jeykumar Sankaran 2018-09-05 1039 if (!hw_ctl[i]) { b6fadcade62704 Drew Davenport 2019-12-06 1040 DPU_ERROR_ENC(dpu_enc, b6fadcade62704 Drew Davenport 2019-12-06 1041 "no ctl block assigned at idx: %d\n", i); de3916c70a24e3 Drew Davenport 2020-02-19 1042 return; 3f4db2e2cc4128 Jeykumar Sankaran 2018-09-05 1043 } 3f4db2e2cc4128 Jeykumar Sankaran 2018-09-05 1044 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1045 phys->hw_pp = dpu_enc->hw_pp[i]; b954fa6baaca7a Drew Davenport 2020-02-19 1046 phys->hw_ctl = to_dpu_hw_ctl(hw_ctl[i]); 3f4db2e2cc4128 Jeykumar Sankaran 2018-09-05 1047 b954fa6baaca7a Drew Davenport 2020-02-19 1048 num_blk = dpu_rm_get_assigned_resources(&dpu_kms->rm, de3916c70a24e3 Drew Davenport 2020-02-19 1049 global_state, drm_enc->base.id, DPU_HW_BLK_INTF, de3916c70a24e3 Drew Davenport 2020-02-19 1050 hw_blk, ARRAY_SIZE(hw_blk)); b954fa6baaca7a Drew Davenport 2020-02-19 1051 for (j = 0; j < num_blk; j++) { 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1052 struct dpu_hw_intf *hw_intf; 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1053 b954fa6baaca7a Drew Davenport 2020-02-19 1054 hw_intf = to_dpu_hw_intf(hw_blk[i]); 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1055 if (hw_intf->idx == phys->intf_idx) 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1056 phys->hw_intf = hw_intf; 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1057 } 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1058 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1059 if (!phys->hw_intf) { 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1060 DPU_ERROR_ENC(dpu_enc, b6fadcade62704 Drew Davenport 2019-12-06 1061 "no intf block assigned at idx: %d\n", i); de3916c70a24e3 Drew Davenport 2020-02-19 1062 return; 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1063 } 9d4c8fd1af4687 Jeykumar Sankaran 2019-02-13 1064 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1065 phys->connector = conn->state->connector; 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1066 if (phys->ops.mode_set) 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1067 phys->ops.mode_set(phys, mode, adj_mode); 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1068 } 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1069 } 25fdd5933e4c0f Jeykumar Sankaran 2018-06-27 1070 :::::: The code at line 959 was first introduced by commit :::::: 25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef drm/msm: Add SDM845 DPU support :::::: TO: Jeykumar Sankaran <jsanka(a)codeaurora.org&gt; :::::: CC: Sean Paul <seanpaul(a)chromium.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org