tree:   https://gitlab.freedesktop.org/agd5f/linux.git amd-staging-drm-next
head:   7403f8492395c0692833f8a7523718760b025159
commit: 429f534054bc2b5f21e8a73433f455247d48fb1d [360/407] drm/amd/display: Fixed EdidUtility build errors
config: s390-randconfig-r023-20210728 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c49df15c278857adecd12db6bb1cdc96885f7079)
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 s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git
        git fetch --no-tags agd5f amd-staging-drm-next
        git checkout 429f534054bc2b5f21e8a73433f455247d48fb1d
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=s390 SHELL=/bin/bash

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

Note: the agd5f/amd-staging-drm-next HEAD 7403f8492395c0692833f8a7523718760b025159 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   s390x-linux-gnu-ld: drivers/gpu/drm/amd/display/dc/core/dc_link.o: in function `dc_link_allocate_mst_payload':
>> dc_link.c:(.text+0x37e6): undefined reference to `dc_dsc_stream_bandwidth_in_kbps'
   s390x-linux-gnu-ld: drivers/gpu/drm/amd/display/dc/core/dc_link.o: in function `dc_bandwidth_in_kbps_from_timing':
   dc_link.c:(.text+0x69b8): undefined reference to `dc_dsc_stream_bandwidth_in_kbps'

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org