tree: https://github.com/intel/linux-intel-lts.git 5.10/yocto head: cb7e61a3cffb19413bc9d8ad7e0b690eec519348 commit: 9ca13cf0ba63b1a0d0701e6e1c97138b1879e0e7 [9819/9862] media: Add poll support config: sh-randconfig-s032-20210709 (attached as .config) compiler: sh4-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/intel/linux-intel-lts/commit/9ca13cf0ba63b1a0d0701e6e1... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 5.10/yocto git checkout 9ca13cf0ba63b1a0d0701e6e1c97138b1879e0e7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=sh If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/media/mc/mc-device.c:602:17: sparse: expected restricted __poll_t ( *poll )( ... ) drivers/media/mc/mc-device.c:602:17: sparse: got unsigned int ( * )( ... ) vim +602 drivers/media/mc/mc-device.c 597 598 static const struct media_file_operations media_device_fops = { 599 .owner = THIS_MODULE, 600 .open = media_device_open, 601 .ioctl = media_device_ioctl, 603 #ifdef CONFIG_COMPAT 604 .compat_ioctl = media_device_compat_ioctl, 605 #endif /* CONFIG_COMPAT */ 606 .release = media_device_close, 607 }; 608 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org