Hi Yong, kernel test robot noticed the following build errors: [auto build test ERROR on drm-misc/drm-misc-next] [also build test ERROR on robh/for-next drm-tip/drm-tip linus/master v6.6 next-20231110] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Yong-Wu/dma-buf-heaps-Initialize-a-secure-heap/20231111-192115 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20231111111559.8218-4-yong.wu%40mediatek.com patch subject: [PATCH v2 3/8] dma-buf: heaps: secure_heap: Initialize tee session config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20231112/202311120136.o1VqalXm-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231112/202311120136.o1VqalXm-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202311120136.o1VqalXm-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): s390-linux-ld: drivers/dma-buf/heaps/secure_heap.o: in function `secure_heap_tee_session_init': secure_heap.c:(.text+0x256): undefined reference to `tee_client_open_context' >> s390-linux-ld: secure_heap.c:(.text+0x3e0): undefined reference to `tee_client_open_session' >> s390-linux-ld: secure_heap.c:(.text+0x52a): undefined reference to `tee_client_close_context' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
