Hi Mikko, 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 tegra/for-next linus/master v5.9-rc8 next-20201007] [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/Mikko-Perttunen/Host1x-TegraDRM-UAPI/20201008-034403 base: git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-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/3721bf9ddd2b05fe12b3512999f77351ae839d08 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mikko-Perttunen/Host1x-TegraDRM-UAPI/20201008-034403 git checkout 3721bf9ddd2b05fe12b3512999f77351ae839d08 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): drivers/staging/media/tegra-video/vi.c: In function 'tegra_channel_cleanup': >> drivers/staging/media/tegra-video/vi.c:621:2: error: implicit declaration of function 'host1x_syncpt_free'; did you mean 'host1x_syncpt_read'? [-Werror=implicit-function-declaration] 621 | host1x_syncpt_free(chan->mw_ack_sp); | ^~~~~~~~~~~~~~~~~~ | host1x_syncpt_read cc1: some warnings being treated as errors vim +621 drivers/staging/media/tegra-video/vi.c 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 616 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 617 static void tegra_channel_cleanup(struct tegra_vi_channel *chan) 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 618 { 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 619 v4l2_ctrl_handler_free(&chan->ctrl_handler); 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 620 media_entity_cleanup(&chan->video.entity); 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 @621 host1x_syncpt_free(chan->mw_ack_sp); 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 622 host1x_syncpt_free(chan->frame_start_sp); 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 623 mutex_destroy(&chan->video_lock); 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 624 } 3d8a97eabef0883 Sowjanya Komatineni 2020-05-04 625 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org