Hi Wesley,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on broonie-sound/for-next]
[also build test ERROR on tiwai-sound/for-next tiwai-sound/for-linus usb/usb-testing usb/usb-next usb/usb-linus linus/master v6.1 next-20221220]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Wesley-Cheng/ASoC-Add-SOC-USB-APIs-for-adding-an-USB-backend/20221224-073625
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/20221223233200.26089-4-quic_wcheng%40quicinc.com
patch subject: [RFC PATCH 03/14] ASoC: qcom: Add USB backend ASoC driver for Q6
config: powerpc-allmodconfig
compiler: powerpc-linux-gcc (GCC) 12.1.0
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/7a76fe9a5a584f1515b084c5ef29bfa0d2a7a4a9
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Wesley-Cheng/ASoC-Add-SOC-USB-APIs-for-adding-an-USB-backend/20221224-073625
        git checkout 7a76fe9a5a584f1515b084c5ef29bfa0d2a7a4a9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash sound/soc/qcom/qdsp6/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   sound/soc/qcom/qdsp6/q6usb.c:75:5: warning: no previous prototype for 'q6usb_audio_ports_of_xlate_dai_name' [-Wmissing-prototypes]
      75 | int q6usb_audio_ports_of_xlate_dai_name(struct snd_soc_component *component,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   sound/soc/qcom/qdsp6/q6usb.c:117:5: warning: no previous prototype for 'q6usb_alsa_connection_cb' [-Wmissing-prototypes]
     117 | int q6usb_alsa_connection_cb(struct snd_soc_usb *usb, int card_idx,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from sound/soc/qcom/qdsp6/q6usb.c:8:
>> sound/soc/qcom/qdsp6/q6usb.c:218:25: error: 'q6afe_dai_device_id' undeclared here (not in a function); did you mean 'q6usb_dai_device_id'?
     218 | MODULE_DEVICE_TABLE(of, q6afe_dai_device_id);
         |                         ^~~~~~~~~~~~~~~~~~~
   include/linux/module.h:243:15: note: in definition of macro 'MODULE_DEVICE_TABLE'
     243 | extern typeof(name) __mod_##type##__##name##_device_table               \
         |               ^~~~
>> include/linux/module.h:243:21: error: '__mod_of__q6afe_dai_device_id_device_table' aliased to undefined symbol 'q6afe_dai_device_id'
     243 | extern typeof(name) __mod_##type##__##name##_device_table               \
         |                     ^~~~~~
   sound/soc/qcom/qdsp6/q6usb.c:218:1: note: in expansion of macro 'MODULE_DEVICE_TABLE'
     218 | MODULE_DEVICE_TABLE(of, q6afe_dai_device_id);
         | ^~~~~~~~~~~~~~~~~~~


vim +218 sound/soc/qcom/qdsp6/q6usb.c

   212	
   213	#ifdef CONFIG_OF
   214	static const struct of_device_id q6usb_dai_device_id[] = {
   215		{ .compatible = "qcom,q6usb-dais" },
   216		{},
   217	};
 > 218	MODULE_DEVICE_TABLE(of, q6afe_dai_device_id);
   219	#endif
   220	

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