Hi Kai-Heng,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on sound/for-next]
[also build test ERROR on v5.7-rc3 next-20200430]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Kai-Heng-Feng/ALSA-hda-realtek-Introduce-polarity-for-micmute-LED-GPIO/20200430-191811
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next
config: i386-randconfig-e002-20200430 (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   ld: sound/pci/hda/patch_realtek.o: in function `alc_fixup_hp_gpio_led':
>> sound/pci/hda/patch_realtek.c:4146: undefined reference to `ledtrig_audio_get'
   ld: sound/pci/hda/patch_realtek.o: in function `devm_led_classdev_register':
>> include/linux/leds.h:193: undefined reference to `devm_led_classdev_register_ext'

vim +4146 sound/pci/hda/patch_realtek.c

  4124	
  4125	/* setup mute and mic-mute GPIO bits, add hooks appropriately */
  4126	static void alc_fixup_hp_gpio_led(struct hda_codec *codec,
  4127					  int action,
  4128					  unsigned int mute_mask,
  4129					  unsigned int micmute_mask)
  4130	{
  4131		struct alc_spec *spec = codec->spec;
  4132		int err;
  4133	
  4134		alc_fixup_gpio(codec, action, mute_mask | micmute_mask);
  4135	
  4136		if (action != HDA_FIXUP_ACT_PRE_PROBE)
  4137			return;
  4138		if (mute_mask) {
  4139			spec->gpio_mute_led_mask = mute_mask;
  4140			spec->gen.vmaster_mute.hook = alc_fixup_gpio_mute_hook;
  4141		}
  4142		if (micmute_mask) {
  4143			spec->gpio_mic_led_mask = micmute_mask;
  4144			snd_hda_gen_add_micmute_led(codec, alc_gpio_micmute_update);
  4145	
> 4146			micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE);
  4147			err = devm_led_classdev_register(&codec->core.dev, &micmute_led_cdev);
  4148			if (err)
  4149				codec_warn(codec, "failed to register micmute LED\n");
  4150		}
  4151	}
  4152	

---
0-DAY CI Kernel Test Service, Intel Corporation
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