Re: [PATCH 2/2] Add generic serial MIDI driver using serial bus API

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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-rc4 next-20220422]
[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: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220426/202204260120.TIXTqkq1-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # 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=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/ drivers/acpi/arm64/ 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 function 'snd_serial_generic_write_wakeup' [-Wmissing-prototypes]
   void snd_serial_generic_write_wakeup(struct serdev_device *serdev)
        ^
   sound/drivers/serial-generic.c:192:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void snd_serial_generic_write_wakeup(struct serdev_device *serdev)
   ^
   static 
   1 warning generated.


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



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