tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e2425464bc87159274879ab30f9d4fe624b9fcd2 commit: 66e82d219924f6112509f7e8f8e687fcc81a16e3 [11453/12662] ALSA: mark all struct bus_type as const config: x86_64-buildonly-randconfig-003-20240105 (https://download.01.org/0day-ci/archive/20240105/202401051634.qQSC02IQ-lkp@xxxxxxxxx/config) compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240105/202401051634.qQSC02IQ-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202401051634.qQSC02IQ-lkp@xxxxxxxxx/ Note: the linux-next/master HEAD e2425464bc87159274879ab30f9d4fe624b9fcd2 builds fine. It may have been fixed somewhere. All errors (new ones prefixed by >>): >> sound/ac97/bus.c:112:20: error: use of undeclared identifier 'ac97_bus_type' 112 | codec->dev.bus = &ac97_bus_type; | ^ sound/ac97/bus.c:191:21: error: use of undeclared identifier 'ac97_bus_type' 191 | drv->driver.bus = &ac97_bus_type; | ^ 2 errors generated. vim +/ac97_bus_type +112 sound/ac97/bus.c 74426fbff66eea Robert Jarzmik 2017-09-02 99 74426fbff66eea Robert Jarzmik 2017-09-02 100 static int ac97_codec_add(struct ac97_controller *ac97_ctrl, int idx, 74426fbff66eea Robert Jarzmik 2017-09-02 101 unsigned int vendor_id) 74426fbff66eea Robert Jarzmik 2017-09-02 102 { 74426fbff66eea Robert Jarzmik 2017-09-02 103 struct ac97_codec_device *codec; 74426fbff66eea Robert Jarzmik 2017-09-02 104 int ret; 74426fbff66eea Robert Jarzmik 2017-09-02 105 74426fbff66eea Robert Jarzmik 2017-09-02 106 codec = kzalloc(sizeof(*codec), GFP_KERNEL); 74426fbff66eea Robert Jarzmik 2017-09-02 107 if (!codec) 74426fbff66eea Robert Jarzmik 2017-09-02 108 return -ENOMEM; 74426fbff66eea Robert Jarzmik 2017-09-02 109 ac97_ctrl->codecs[idx] = codec; 74426fbff66eea Robert Jarzmik 2017-09-02 110 codec->vendor_id = vendor_id; 74426fbff66eea Robert Jarzmik 2017-09-02 111 codec->dev.release = ac97_codec_release; 74426fbff66eea Robert Jarzmik 2017-09-02 @112 codec->dev.bus = &ac97_bus_type; 74426fbff66eea Robert Jarzmik 2017-09-02 113 codec->dev.parent = &ac97_ctrl->adap; 74426fbff66eea Robert Jarzmik 2017-09-02 114 codec->num = idx; 74426fbff66eea Robert Jarzmik 2017-09-02 115 codec->ac97_ctrl = ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 116 74426fbff66eea Robert Jarzmik 2017-09-02 117 device_initialize(&codec->dev); 74426fbff66eea Robert Jarzmik 2017-09-02 118 dev_set_name(&codec->dev, "%s:%u", dev_name(ac97_ctrl->parent), idx); 2225a3e6af78e6 Robert Jarzmik 2018-06-22 119 codec->dev.of_node = ac97_of_get_child_device(ac97_ctrl, idx, 2225a3e6af78e6 Robert Jarzmik 2018-06-22 120 vendor_id); 74426fbff66eea Robert Jarzmik 2017-09-02 121 74426fbff66eea Robert Jarzmik 2017-09-02 122 ret = device_add(&codec->dev); 607975b30db41a Ding Xiang 2019-07-23 123 if (ret) { 74426fbff66eea Robert Jarzmik 2017-09-02 124 put_device(&codec->dev); 74426fbff66eea Robert Jarzmik 2017-09-02 125 return ret; 74426fbff66eea Robert Jarzmik 2017-09-02 126 } 74426fbff66eea Robert Jarzmik 2017-09-02 127 607975b30db41a Ding Xiang 2019-07-23 128 return 0; 607975b30db41a Ding Xiang 2019-07-23 129 } 607975b30db41a Ding Xiang 2019-07-23 130 :::::: The code at line 112 was first introduced by commit :::::: 74426fbff66eea8e8d1f42c8238c268d1e63a832 ALSA: ac97: add an ac97 bus :::::: TO: Robert Jarzmik <robert.jarzmik@xxxxxxx> :::::: CC: Mark Brown <broonie@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki