Re: [PATCH v4 7/7] drm/mediatek: Add mt8195 DisplayPort driver

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Hi Markus,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on robh/for-next]
[also build test ERROR on pza/reset/next linus/master v5.15-rc5 next-20211011]
[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/0day-ci/linux/commits/Markus-Schneider-Pargmann/drm-mediatek-Add-mt8195-DisplayPort-driver/20211011-174743
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: arm64-randconfig-r005-20211011 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f95d9c95bbf4cf662b9a181245fc6dcede39f590)
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://github.com/0day-ci/linux/commit/dbbfbf0abd862cfc9b617b8a770a10a18d0183a9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Markus-Schneider-Pargmann/drm-mediatek-Add-mt8195-DisplayPort-driver/20211011-174743
        git checkout dbbfbf0abd862cfc9b617b8a770a10a18d0183a9
        # save the attached .config to linux build tree
        mkdir build_dir
        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 as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: mtk_dp_driver
   >>> referenced by mtk_drm_drv.c
   >>>               gpu/drm/mediatek/mtk_drm_drv.o:(mtk_drm_drivers) in archive drivers/built-in.a
   >>> did you mean: mtk_dpi_driver
   >>> defined in: drivers/built-in.a(gpu/drm/mediatek/mtk_dpi.o)

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

Attachment: .config.gz
Description: application/gzip


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