[kbingham-rcar:kbingham/drm-misc/next/sn65dsi86/hpd 11/15] ERROR: modpost: "drm_atomic_helper_bridge_dsi_input_bus_fmt" [drivers/gpu/drm/bridge/parade-ps8640.ko] undefined!

kernel test robot
2022-03-11T08:46:41Z

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git kbingham/drm-misc/next/sn65dsi86/hpd
head: 94aa000441bc3f2b262da3580845e490e1c31017
commit: d7e45a09dc884537c84843120b2fa90e76495a82 [11/15] drm/bridge: ps8640: plug atomic_get_input_bus_fmts
config: hexagon-randconfig-r045-20220310 (https://download.01.org/0day-ci/archive/20220311/202203111635.N1MPOboS-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git/commit/?id=d7e45a09dc884537c84843120b2fa90e76495a82
git remote add kbingham-rcar https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git
git fetch --no-tags kbingham-rcar kbingham/drm-misc/next/sn65dsi86/hpd
git checkout d7e45a09dc884537c84843120b2fa90e76495a82
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "drm_atomic_helper_bridge_dsi_input_bus_fmt" [drivers/gpu/drm/bridge/parade-ps8640.ko] undefined!

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0-DAY CI Kernel Test Service