Hi Andy, I love your patch! Yet something to improve: [auto build test ERROR on staging/staging-testing] url: https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/staging-vc04_services-Re-use-generic-struct-s32_fract/20220502-200543 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 5fe7856ad59afc56a6ff35d091bfaddd1d4f4bce config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220502/202205022340.RcyzPlQJ-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 11.3.0 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/intel-lab-lkp/linux/commit/c0fbdbd092e007c2567a367389e86df9d1cd7ee3 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Andy-Shevchenko/staging-vc04_services-Re-use-generic-struct-s32_fract/20220502-200543 git checkout c0fbdbd092e007c2567a367389e86df9d1cd7ee3 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/staging/vc04_services/bcm2835-camera/controls.c: In function 'ctrl_set_rational': >> drivers/staging/vc04_services/bcm2835-camera/controls.c:162:24: error: 'struct s32_fract' has no member named 'numumerator'; did you mean 'numerator'? 162 | rational_value.numumerator = ctrl->val; | ^~~~~~~~~~~ | numerator vim +162 drivers/staging/vc04_services/bcm2835-camera/controls.c 152 153 static int ctrl_set_rational(struct bcm2835_mmal_dev *dev, 154 struct v4l2_ctrl *ctrl, 155 const struct bcm2835_mmal_v4l2_ctrl *mmal_ctrl) 156 { 157 struct s32_fract rational_value; 158 struct vchiq_mmal_port *control; 159 160 control = &dev->component[COMP_CAMERA]->control; 161 > 162 rational_value.numumerator = ctrl->val; 163 rational_value.denominator = 100; 164 165 return vchiq_mmal_port_parameter_set(dev->instance, control, 166 mmal_ctrl->mmal_id, 167 &rational_value, 168 sizeof(rational_value)); 169 } 170 -- 0-DAY CI Kernel Test Service https://01.org/lkp