Hi Ming,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on robh/for-next v5.14-rc5]
[cannot apply to shawnguo/for-next next-20210811]
[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/Ming-Qian/imx8q-video-decoder-encoder-driver/20210811-164741
base:   git://linuxtv.org/media_tree.git master
config: x86_64-randconfig-a004-20210811 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d39ebdae674c8efc84ebe8dc32716ec353220530)
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/2fa6f8ecd73870259a9a985a8b214d5eb58a5314
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Ming-Qian/imx8q-video-decoder-encoder-driver/20210811-164741
        git checkout 2fa6f8ecd73870259a9a985a8b214d5eb58a5314
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   In file included from <built-in>:1:
   In file included from ./usr/include/linux/imx_vpu.h:9:
   ./usr/include/linux/videodev2.h:2403:20: error: field has incomplete type 'struct timespec'
           struct timespec                 timestamp;
                                           ^
   ./usr/include/linux/videodev2.h:2403:9: note: forward declaration of 'struct timespec'
           struct timespec                 timestamp;
                  ^
   In file included from <built-in>:1:
>> ./usr/include/linux/imx_vpu.h:12:1: warning: // comments are not allowed in this language [-Wcomment]
   //error happened in dec/enc
   ^
   1 warning and 1 error generated.

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