Hi Sowjanya,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on tegra-drm/drm/tegra/for-next]
[also build test ERROR on robh/for-next v5.8-rc6 next-20200723]
[cannot apply to tegra/for-next]
[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/Sowjanya-Komatineni/Support-for-Tegra-video-capture-from-external-sensor/20200724-075045
base:   git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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 >>):

   drivers/staging/media/tegra-video/vi.c: In function 'tegra_vi_graph_cleanup':
>> drivers/staging/media/tegra-video/vi.c:1468:3: error: implicit declaration of function 'vb2_video_unregister_device'; did you mean 'video_unregister_device'? [-Werror=implicit-function-declaration]
    1468 |   vb2_video_unregister_device(&chan->video);
         |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
         |   video_unregister_device
   cc1: some warnings being treated as errors

vim +1468 drivers/staging/media/tegra-video/vi.c

  1462	
  1463	static void tegra_vi_graph_cleanup(struct tegra_vi *vi)
  1464	{
  1465		struct tegra_vi_channel *chan;
  1466	
  1467		list_for_each_entry(chan, &vi->vi_chans, list) {
> 1468			vb2_video_unregister_device(&chan->video);
  1469			v4l2_async_notifier_unregister(&chan->notifier);
  1470			v4l2_async_notifier_cleanup(&chan->notifier);
  1471		}
  1472	}
  1473	

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