tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   4d80748d16c82a9c2c4ea5feea96e476de3cd876
commit: 957fe62d7d15f43d49e8cbacafaff8ede7d6cb30 [4698/12409] drm: rcar-du: Fix DSI enable & disable sequence
config: arm64-randconfig-r003-20221003
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=957fe62d7d15f43d49e8cbacafaff8ede7d6cb30
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 957fe62d7d15f43d49e8cbacafaff8ede7d6cb30
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

Note: the linux-next/master HEAD 4d80748d16c82a9c2c4ea5feea96e476de3cd876 builds fine.
      It may have been fixed somewhere.

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: rcar_mipi_dsi_pclk_enable
   >>> referenced by rcar_du_crtc.c
   >>>               gpu/drm/rcar-du/rcar_du_crtc.o:(rcar_du_crtc_atomic_enable) in archive drivers/built-in.a
--
>> ld.lld: error: undefined symbol: rcar_mipi_dsi_pclk_disable
   >>> referenced by rcar_du_crtc.c
   >>>               gpu/drm/rcar-du/rcar_du_crtc.o:(rcar_du_crtc_atomic_disable) in archive drivers/built-in.a

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp