Hi Sowjanya, I love your patch! Yet something to improve: [auto build test ERROR on tegra-drm/drm/tegra/for-next] [also build test ERROR on robh/for-next v5.8 next-20200811] [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-... 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(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/staging/media/tegra-video/vi.c: In function 'tegra_vi_graph_cleanup': 1508 | vb2_video_unregister_device(&chan->video); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ | video_unregister_device cc1: some warnings being treated as errors vim +1508 drivers/staging/media/tegra-video/vi.c 1502 1503 static void tegra_vi_graph_cleanup(struct tegra_vi *vi) 1504 { 1505 struct tegra_vi_channel *chan; 1506 1507 list_for_each_entry(chan, &vi->vi_chans, list) { 1509 v4l2_async_notifier_unregister(&chan->notifier); 1510 v4l2_async_notifier_cleanup(&chan->notifier); 1511 } 1512 } 1513 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org