Hi Yunfei, Thank you for the patch! Yet something to improve: [auto build test ERROR on media-tree/master] [also build test ERROR on v5.18-rc1 next-20220408] [cannot apply to remoteproc/rproc-next drm-tip/drm-tip] [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/intel-lab-lkp/linux/commits/Yunfei-Dong/media-mediatek-vcodec-Add-vdec-enable-disable-hardware-helpers/20220408-210244 base: git://linuxtv.org/media_tree.git master config: arm64-randconfig-r015-20220408 (https://download.01.org/0day-ci/archive/20220409/202204092137.3RrpN4Hr-lkp@xxxxxxxxx/config) compiler: aarch64-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://github.com/intel-lab-lkp/linux/commit/251c7c77f6690881357df39867a32a03eb7db3b7 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Yunfei-Dong/media-mediatek-vcodec-Add-vdec-enable-disable-hardware-helpers/20220408-210244 git checkout 251c7c77f6690881357df39867a32a03eb7db3b7 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): aarch64-linux-ld: drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.o: in function `vdec_vp9_slice_update_prob.isra.0': >> vdec_vp9_req_lat_if.c:(.text+0x2654): undefined reference to `v4l2_vp9_adapt_noncoef_probs' vdec_vp9_req_lat_if.c:(.text+0x2654): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `v4l2_vp9_adapt_noncoef_probs' >> aarch64-linux-ld: vdec_vp9_req_lat_if.c:(.text+0x26c0): undefined reference to `v4l2_vp9_adapt_coef_probs' vdec_vp9_req_lat_if.c:(.text+0x26c0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `v4l2_vp9_adapt_coef_probs' aarch64-linux-ld: vdec_vp9_req_lat_if.c:(.text+0x26d8): undefined reference to `v4l2_vp9_adapt_coef_probs' vdec_vp9_req_lat_if.c:(.text+0x26d8): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `v4l2_vp9_adapt_coef_probs' aarch64-linux-ld: vdec_vp9_req_lat_if.c:(.text+0x26f0): undefined reference to `v4l2_vp9_adapt_coef_probs' vdec_vp9_req_lat_if.c:(.text+0x26f0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `v4l2_vp9_adapt_coef_probs' -- 0-DAY CI Kernel Test Service https://01.org/lkp