[esmil:visionfive 76/80] ERROR: modpost: "arch_setup_dma_ops" [drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.ko] undefined!

[kernel test robot]

tree:   https://github.com/esmil/linux visionfive
head:   e46c3a7e373e6faa03399f1a41c29cf7546c37cb
commit: 3a5dd7a266966a7d41fcc6335af9329664d901d0 [76/80] RISC-V: Support non-coherent DMA operations
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20220119/202201191504.JricJykh-lkp@xxxxxxxxx/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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://github.com/esmil/linux/commit/3a5dd7a266966a7d41fcc6335af9329664d901d0
        git remote add esmil https://github.com/esmil/linux
        git fetch --no-tags esmil visionfive
        git checkout 3a5dd7a266966a7d41fcc6335af9329664d901d0
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv 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 >>, old ones prefixed by <<):

ERROR: modpost: missing MODULE_LICENSE() in drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.o
>> ERROR: modpost: "arch_setup_dma_ops" [drivers/dma/dw-axi-dmac-starfive/starfive_dmaengine_memcpy.ko] undefined!

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