Re: [PATCH v2 8/8] ASoC: cs35l56: Add driver for Cirrus Logic CS35L56

[Richard Fitzgerald <rf@opensource.cirrus.com>]

On 17/03/2023 10:40, Richard Fitzgerald wrote:
> On 16/03/2023 20:15, kernel test robot wrote:
>> Hi Richard,
>>
>> Thank you for the patch! Yet something to improve:
>>
>> [auto build test ERROR on broonie-sound/for-next]
>> [also build test ERROR on linus/master v6.3-rc2 next-20230316]
>> [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/Richard-Fitzgerald-via-Alsa-devel/ASoC-wm_adsp-Use-no_core_startstop-to-prevent-creating-preload-control/20230313-235605
>> base:   
>> https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 
>> for-next
>> patch link:    
>> https://lore.kernel.org/r/167872265923.26.336497278776737619%40mailman-core.alsa-project.org
>> patch subject: [PATCH v2 8/8] ASoC: cs35l56: Add driver for Cirrus 
>> Logic CS35L56
>> config: s390-randconfig-r044-20230313 
>> (https://download.01.org/0day-ci/archive/20230317/202303170422.ZYpOtc4P-lkp@intel.com/config)
>> compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 
>> 67409911353323ca5edf2049ef0df54132fa1ca7)
>> 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 s390 cross compiling tool for clang build
>>          # apt-get install binutils-s390x-linux-gnu
>>          # 
>> https://github.com/intel-lab-lkp/linux/commit/5856c94d659f9c9963f5c37762cf201e1f1765e9
>>          git remote add linux-review 
>> https://github.com/intel-lab-lkp/linux
>>          git fetch --no-tags linux-review 
>> Richard-Fitzgerald-via-Alsa-devel/ASoC-wm_adsp-Use-no_core_startstop-to-prevent-creating-preload-control/20230313-235605
>>          git checkout 5856c94d659f9c9963f5c37762cf201e1f1765e9
>>          # save the config file
>>          mkdir build_dir && cp config build_dir/.config
>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 
>> W=1 O=build_dir ARCH=s390 olddefconfig
>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 
>> W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
>>
>> If you fix the issue, kindly add following tag where applicable
>> | Reported-by: kernel test robot <lkp@intel.com>
>> | Link: 
>> https://lore.kernel.org/oe-kbuild-all/202303170422.ZYpOtc4P-lkp@intel.com/
>>
>> All errors (new ones prefixed by >>):
>>
>>     s390x-linux-ld: sound/soc/codecs/cs35l56.o: in function 
>> `cs35l56_dsp_work':
>>>> sound/soc/codecs/cs35l56.c:887: undefined reference to 
>>>> `sdw_write_no_pm'
>>>> s390x-linux-ld: sound/soc/codecs/cs35l56.c:888: undefined reference 
>>>> to `sdw_read_no_pm'
>>>> s390x-linux-ld: sound/soc/codecs/cs35l56.c:889: undefined reference 
>>>> to `sdw_write_no_pm'
>>     s390x-linux-ld: sound/soc/codecs/cs35l56.c:953: undefined 
>> reference to `sdw_write_no_pm'
>>     s390x-linux-ld: sound/soc/codecs/cs35l56.o: in function 
>> `cs35l56_sdw_dai_hw_params':
>>>> sound/soc/codecs/cs35l56.c:710: undefined reference to 
>>>> `sdw_stream_add_slave'
>>     s390x-linux-ld: sound/soc/codecs/cs35l56.o: in function 
>> `cs35l56_sdw_dai_hw_free':
>>>> sound/soc/codecs/cs35l56.c:729: undefined reference to 
>>>> `sdw_stream_remove_slave'
>>
> 
> I don't understand what's happened here.
> include/linux/soundwire/sdw.h provides inline dummy versions of these
> functions if !IS_ENABLED(CONFIG_SOUNDWIRE) so how can they be
> undefined reference?

Oh, I see it now.
CONFIG_SOUNDWIRE=m but CONFIG_SND_SOC_CS35L56=y so it can't link.