Hi Michael, I love your patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on peter.chen-usb/for-usb-next v5.12-rc8 next-20210421] [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/Michael-Grzeschik/usb-gadget-uvc-improve-uvc-gadget-performance/20210422-051614 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: csky-randconfig-p001-20210421 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/edc3f9470b0260502164a4e8b9d2170a91542538 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Michael-Grzeschik/usb-gadget-uvc-improve-uvc-gadget-performance/20210422-051614 git checkout edc3f9470b0260502164a4e8b9d2170a91542538 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=csky If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "vb2_dma_sg_memops" [drivers/usb/gadget/function/usb_f_uvc.ko] undefined! ERROR: modpost: "__get_user_bad" [lib/test_user_copy.ko] undefined! Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for LOCKDEP Depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && (FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86) Selected by - PROVE_LOCKING && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT - LOCK_STAT && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT - DEBUG_LOCK_ALLOC && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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