[PATCH 3/3] dma-buf: Add an API for exporting sync files (v6)

[kernel test robot]

Hi Jason,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tegra-drm/drm/tegra/for-next]
[also build test ERROR on linus/master v5.12-rc3 next-20210315]
[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/Jason-Ekstrand/dma-buf-add-dma_fence_array_for_each-v2/20210316-060509
base:   git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next
config: xtensa-randconfig-r022-20210315 (attached as .config)
compiler: xtensa-linux-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/570269f5d3ec3a13936fa2224682d39c8a037126
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Jason-Ekstrand/dma-buf-add-dma_fence_array_for_each-v2/20210316-060509
        git checkout 570269f5d3ec3a13936fa2224682d39c8a037126
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 

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

All errors (new ones prefixed by >>):

   xtensa-linux-ld: drivers/dma-buf/dma-buf.o: in function `dma_buf_dynamic_attach':
>> dma-buf.c:(.text+0xf4c): undefined reference to `sync_file_create'
   xtensa-linux-ld: drivers/dma-buf/dma-buf.o: in function `dma_buf_unmap_attachment':
   dma-buf.c:(.text+0x10b0): undefined reference to `sync_file_create'

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