Re: [PATCH] ASoC: rt1320-sdw: kcontrol for brown-out feature switch

[kernel test robot <lkp@intel.com>]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on broonie-sound/for-next]
[also build test WARNING on linus/master v7.0-rc6 next-20260402]
[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/jack-yu-realtek-com/ASoC-rt1320-sdw-kcontrol-for-brown-out-feature-switch/20260403-160437
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/20260401093107.632673-1-jack.yu%40realtek.com
patch subject: [PATCH] ASoC: rt1320-sdw: kcontrol for brown-out feature switch
config: arc-randconfig-001-20260403 (https://download.01.org/0day-ci/archive/20260403/202604032240.PeKldNcG-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260403/202604032240.PeKldNcG-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604032240.PeKldNcG-lkp@intel.com/

All warnings (new ones prefixed by >>):

   sound/soc/codecs/rt1320-sdw.c: In function 'rt1320_brown_out_put':
>> sound/soc/codecs/rt1320-sdw.c:2504:11: warning: unused variable 'tmp' [-Wunused-variable]
     int ret, tmp;
              ^~~
>> sound/soc/codecs/rt1320-sdw.c:2503:17: warning: unused variable 'dev' [-Wunused-variable]
     struct device *dev = &rt1320->sdw_slave->dev;
                    ^~~


vim +/tmp +2504 sound/soc/codecs/rt1320-sdw.c

  2497	
  2498	static int rt1320_brown_out_put(struct snd_kcontrol *kcontrol,
  2499					 struct snd_ctl_elem_value *ucontrol)
  2500	{
  2501		struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
  2502		struct rt1320_sdw_priv *rt1320 = snd_soc_component_get_drvdata(component);
> 2503		struct device *dev = &rt1320->sdw_slave->dev;
> 2504		int ret, tmp;
  2505	
  2506		ret = pm_runtime_resume(component->dev);
  2507		if (ret < 0 && ret != -EACCES)
  2508			return ret;
  2509	
  2510		rt1320->brown_out = ucontrol->value.integer.value[0];
  2511		regcache_cache_bypass(rt1320->regmap, true);
  2512	
  2513		if (rt1320->brown_out == 1)
  2514			regmap_write(rt1320->regmap, 0xdb03, 0x00);
  2515		else
  2516			regmap_write(rt1320->regmap, 0xdb03, 0xf0);
  2517	
  2518		regcache_cache_bypass(rt1320->regmap, false);
  2519	
  2520		return 0;
  2521	}
  2522	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki