Hi Mauro, I love your patch! Yet something to improve: [auto build test ERROR on robh/for-next] [also build test ERROR on char-misc/char-misc-testing v5.14 next-20210909] [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/Mauro-Carvalho-Chehab/Make-USB-p... base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: arm64-buildonly-randconfig-r001-20210908 (attached as .config) compiler: aarch64-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/b8b9096981afc8389783e87cd0342002d... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mauro-Carvalho-Chehab/Make-USB-ports-to-work-on-HiKey960-970/20210903-173102 git checkout b8b9096981afc8389783e87cd0342002d4aeed94 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 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 >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org