Hi Daniel, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on tiwai-sound/for-next] [also build test WARNING on v5.18-rc3 next-20220420] [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/intel-lab-lkp/linux/commits/Daniel-Kaehn/Add-generic-serial-MIDI-driver-using-serial-bus-API/20220421-035024 base: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next config: ia64-allyesconfig (https://download.01.org/0day-ci/archive/20220421/202204211211.RPFL9E3X-lkp@xxxxxxxxx/config) compiler: ia64-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/intel-lab-lkp/linux/commit/65e00db0913a4019c3158e31aa6b2fd2c28ba03f git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Daniel-Kaehn/Add-generic-serial-MIDI-driver-using-serial-bus-API/20220421-035024 git checkout 65e00db0913a4019c3158e31aa6b2fd2c28ba03f # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash sound/drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> sound/drivers/serial-generic.c:192:6: warning: no previous prototype for 'snd_serial_generic_write_wakeup' [-Wmissing-prototypes] 192 | void snd_serial_generic_write_wakeup(struct serdev_device *serdev) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/snd_serial_generic_write_wakeup +192 sound/drivers/serial-generic.c 191 > 192 void snd_serial_generic_write_wakeup(struct serdev_device *serdev) 193 { 194 struct snd_serial_generic *drvdata = serdev_device_get_drvdata(serdev); 195 196 if (!snd_rawmidi_transmit_empty(drvdata->midi_output)) 197 snd_serial_generic_output_write(drvdata->midi_output); 198 } 199 -- 0-DAY CI Kernel Test Service https://01.org/lkp
