[PATCH] ASoC: wcd938x: Fix event generation for some controls

[kernel test robot]

Hi Mark,

I love your patch! Perhaps something to improve:

[auto build test WARNING on broonie-sound/for-next]
[also build test WARNING on v5.18 next-20220603]
[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]

url:    https://github.com/intel-lab-lkp/linux/commits/Mark-Brown/ASoC-wcd938x-Fix-event-generation-for-some-controls/20220605-162848
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220606/202206060948.KAZcrRC8-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/77b0604d37f40ad0f56da53a9a38ad0de298fa52
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Mark-Brown/ASoC-wcd938x-Fix-event-generation-for-some-controls/20220605-162848
        git checkout 77b0604d37f40ad0f56da53a9a38ad0de298fa52
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash sound/soc/codecs/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

   sound/soc/codecs/wcd938x.c: In function 'wcd938x_rx_hph_mode_put':
>> sound/soc/codecs/wcd938x.c:2546:13: warning: unused variable 'change' [-Wunused-variable]
    2546 |         int change;
         |             ^~~~~~


vim +/change +2546 sound/soc/codecs/wcd938x.c

  2540	
  2541	static int wcd938x_rx_hph_mode_put(struct snd_kcontrol *kcontrol,
  2542					   struct snd_ctl_elem_value *ucontrol)
  2543	{
  2544		struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
  2545		struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component);
> 2546		int change;
  2547	
  2548		if (wcd938x->hph_mode == ucontrol->value.enumerated.item[0])
  2549			return 0;
  2550	
  2551		wcd938x->hph_mode = ucontrol->value.enumerated.item[0];
  2552	
  2553		return 1;
  2554	}
  2555	

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