Hi Wesley, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on robh/for-next v5.13-rc6 next-20210617] [cannot apply to balbi-usb/testing/next] [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/Wesley-Cheng/Re-introduce-TX-FIF... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: csky-randconfig-s031-20210617 (attached as .config) compiler: csky-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/0day-ci/linux/commit/54b6eb3d44464c519a4546e9a2c3041ee... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Wesley-Cheng/Re-introduce-TX-FIFO-resize-for-larger-EP-bursting/20210617-180037 git checkout 54b6eb3d44464c519a4546e9a2c3041eeced1009 # 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__' W=1 ARCH=csky 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 >>, old ones prefixed by <<): >> ERROR: modpost: "of_add_property" [drivers/usb/dwc3/dwc3-qcom.ko] undefined!