tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.4 head: 1e78c85f6eec2ef1bb91ad01af8ac649e1e75d44 commit: 47e63f43417cb015e50424ad1007d534a7cf3b27 [47/53] ALSA: hda/realtek: Use the new vmaster mute LED helper config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable queue-5.4 git checkout 47e63f43417cb015e50424ad1007d534a7cf3b27 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from sound/pci/hda/patch_conexant.c:221: sound/pci/hda/thinkpad_helper.c: In function 'hda_fixup_thinkpad_acpi': 24 | snd_hda_gen_add_mute_led_cdev(codec, NULL); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | snd_hda_gen_add_micmute_led sound/pci/hda/thinkpad_helper.c:25:3: error: implicit declaration of function 'snd_hda_gen_add_micmute_led_cdev'; did you mean 'snd_hda_gen_add_micmute_led'? [-Werror=implicit-function-declaration] 25 | snd_hda_gen_add_micmute_led_cdev(codec, NULL); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | snd_hda_gen_add_micmute_led cc1: some warnings being treated as errors vim +24 sound/pci/hda/thinkpad_helper.c 17 18 static void hda_fixup_thinkpad_acpi(struct hda_codec *codec, 19 const struct hda_fixup *fix, int action) 20 { 21 if (action == HDA_FIXUP_ACT_PROBE) { 22 if (!is_thinkpad(codec)) 23 return; 25 snd_hda_gen_add_micmute_led_cdev(codec, NULL); 26 } 27 } 28 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org