Hi Jacopo, I love your patch! Yet something to improve: [auto build test ERROR on media-tree/master] [also build test ERROR on shawnguo/for-next pza/reset/next linus/master v5.17-rc3 next-20220211] [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/Jacopo-Mondi/media-De-stage-imx7... base: git://linuxtv.org/media_tree.git master config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20220212/202202120715.pWMiLjja-lk...) compiler: alpha-linux-gcc (GCC) 11.2.0 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/18a307fb15879832a050d12ae32bd9d94... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jacopo-Mondi/media-De-stage-imx7-mipi-csis-c/20220212-020342 git checkout 18a307fb15879832a050d12ae32bd9d94a9e5c91 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=alpha SHELL=/bin/bash 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 >>): make[5]: Target '__build' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org