Hi Yongqiang, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.14-rc5 next-20210810] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Yongqiang-Niu/drm-mediatek-add-s... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9e723c5380c6e14fb91a8b6950563d040674afdb config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 10.3.0 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://github.com/0day-ci/linux/commit/1b296c125948e050f6a25ff30daef4432... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Yongqiang-Niu/drm-mediatek-add-support-for-mediatek-SOC-MT8192/20210811-101315 git checkout 1b296c125948e050f6a25ff30daef443258f9a1e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arm64 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/mediatek/mtk_drm_ddp_comp.c:388:3: error: 'DDP_COMPONENT_OVL_2L2' undeclared here (not in a function); did you mean 'DDP_COMPONENT_OVL_2L1'? 388 | [DDP_COMPONENT_OVL_2L2] = { MTK_DISP_OVL_2L, 2, &ddp_ovl }, | ^~~~~~~~~~~~~~~~~~~~~ | DDP_COMPONENT_OVL_2L1 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c:388:3: error: array index in initializer not of integer type drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c:388:3: note: (near initialization for 'mtk_ddp_matches') 388 | [DDP_COMPONENT_OVL_2L2] = { MTK_DISP_OVL_2L, 2, &ddp_ovl }, | ^ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c:388:28: note: (near initialization for 'mtk_ddp_matches[19]') vim +388 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c 366 367 static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { 368 [DDP_COMPONENT_AAL0] = { MTK_DISP_AAL, 0, &ddp_aal }, 369 [DDP_COMPONENT_AAL1] = { MTK_DISP_AAL, 1, &ddp_aal }, 370 [DDP_COMPONENT_BLS] = { MTK_DISP_BLS, 0, NULL }, 371 [DDP_COMPONENT_CCORR] = { MTK_DISP_CCORR, 0, &ddp_ccorr }, 372 [DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, &ddp_color }, 373 [DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, &ddp_color }, 374 [DDP_COMPONENT_DITHER] = { MTK_DISP_DITHER, 0, &ddp_dither }, 375 [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, &ddp_dpi }, 376 [DDP_COMPONENT_DPI1] = { MTK_DPI, 1, &ddp_dpi }, 377 [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, &ddp_dsi }, 378 [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, &ddp_dsi }, 379 [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, &ddp_dsi }, 380 [DDP_COMPONENT_DSI3] = { MTK_DSI, 3, &ddp_dsi }, 381 [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, &ddp_gamma }, 382 [DDP_COMPONENT_OD0] = { MTK_DISP_OD, 0, &ddp_od }, 383 [DDP_COMPONENT_OD1] = { MTK_DISP_OD, 1, &ddp_od }, 384 [DDP_COMPONENT_OVL0] = { MTK_DISP_OVL, 0, &ddp_ovl }, 385 [DDP_COMPONENT_OVL1] = { MTK_DISP_OVL, 1, &ddp_ovl }, 386 [DDP_COMPONENT_OVL_2L0] = { MTK_DISP_OVL_2L, 0, &ddp_ovl }, 387 [DDP_COMPONENT_OVL_2L1] = { MTK_DISP_OVL_2L, 1, &ddp_ovl }, 389 [DDP_COMPONENT_PWM0] = { MTK_DISP_PWM, 0, NULL }, 390 [DDP_COMPONENT_PWM1] = { MTK_DISP_PWM, 1, NULL }, 391 [DDP_COMPONENT_PWM2] = { MTK_DISP_PWM, 2, NULL }, 392 [DDP_COMPONENT_RDMA0] = { MTK_DISP_RDMA, 0, &ddp_rdma }, 393 [DDP_COMPONENT_RDMA1] = { MTK_DISP_RDMA, 1, &ddp_rdma }, 394 [DDP_COMPONENT_RDMA2] = { MTK_DISP_RDMA, 2, &ddp_rdma }, 395 [DDP_COMPONENT_UFOE] = { MTK_DISP_UFOE, 0, &ddp_ufoe }, 396 [DDP_COMPONENT_WDMA0] = { MTK_DISP_WDMA, 0, NULL }, 397 [DDP_COMPONENT_WDMA1] = { MTK_DISP_WDMA, 1, NULL }, 398 }; 399 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org