On Wed, Oct 27, 2021 at 02:07:19PM +0800, kernel test robot wrote: > Hi "Maíra, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on media-tree/master] > [also build test ERROR on v5.15-rc7 next-20211026] > [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/Ma-ra-Canal/media-rc-pwm-ir-tx-Switch-to-atomic-PWM-API/20211024-183502 > base: git://linuxtv.org/media_tree.git master > config: riscv-randconfig-r004-20211027 (attached as .config) > compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5db7568a6a1fcb408eb8988abdaff2a225a8eb72) > 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 > # install riscv cross compiling tool for clang build > # apt-get install binutils-riscv64-linux-gnu > # https://github.com/0day-ci/linux/commit/abea850df0b6436083fcaa097ad3029a27aa62bb > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Ma-ra-Canal/media-rc-pwm-ir-tx-Switch-to-atomic-PWM-API/20211024-183502 > git checkout abea850df0b6436083fcaa097ad3029a27aa62bb > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv > > 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: "__udivdi3" [drivers/media/rc/pwm-ir-tx.ko] undefined! This comes from the line: state.duty_cycle = DIV_ROUND_CLOSEST(pwm_ir->duty_cycle * state.period, 100); where DIV_ROUND_CLOSEST expands to a normal division but state.period is a u64. So this should use DIV64_U64_ROUND_CLOSEST I guess. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | https://www.pengutronix.de/ |
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