[kbuild-all] [morimoto-linux:fw-cleanup-2020-05-18-v1 75/211] sound/soc/meson/aiu-encoder-i2s.c:75:15: warning: variable 'val' set but not used

tree: https://github.com/morimoto/linux fw-cleanup-2020-05-18-v1 head: ab7ab9e3fba39b481f85abd88e5d2893f013650f commit: 51a8050cee171f0bc5023ef26365e9700ab73994 [75/211] ASoC: soc-component: merge snd_soc_component_read() and snd_soc_component_read32() config: ia64-randconfig-r025-20200519 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 51a8050cee171f0bc5023ef26365e9700ab73994 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): sound/soc/meson/aiu-encoder-i2s.c: In function 'aiu_encoder_i2s_setup_desc': 75 | unsigned int val; | ^~~ -- sound/soc/meson/aiu-fifo-i2s.c: In function 'aiu_fifo_i2s_trigger': 49 | unsigned int val; | ^~~ vim +/val +75 sound/soc/meson/aiu-encoder-i2s.c 6ae9ca9ce986bf Jerome Brunet 2020-02-13 69 6ae9ca9ce986bf Jerome Brunet 2020-02-13 70 static int aiu_encoder_i2s_setup_desc(struct snd_soc_component *component, 6ae9ca9ce986bf Jerome Brunet 2020-02-13 71 struct snd_pcm_hw_params *params) 6ae9ca9ce986bf Jerome Brunet 2020-02-13 72 { 6ae9ca9ce986bf Jerome Brunet 2020-02-13 73 /* Always operate in split (classic interleaved) mode */ 6ae9ca9ce986bf Jerome Brunet 2020-02-13 74 unsigned int desc = AIU_I2S_SOURCE_DESC_MODE_SPLIT; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 @75 unsigned int val; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 76 6ae9ca9ce986bf Jerome Brunet 2020-02-13 77 /* Reset required to update the pipeline */ 6ae9ca9ce986bf Jerome Brunet 2020-02-13 78 snd_soc_component_write(component, AIU_RST_SOFT, AIU_RST_SOFT_I2S_FAST); 51a8050cee171f Kuninori Morimoto 2020-05-11 79 val = snd_soc_component_read(component, AIU_I2S_SYNC); 6ae9ca9ce986bf Jerome Brunet 2020-02-13 80 6ae9ca9ce986bf Jerome Brunet 2020-02-13 81 switch (params_physical_width(params)) { 6ae9ca9ce986bf Jerome Brunet 2020-02-13 82 case 16: /* Nothing to do */ 6ae9ca9ce986bf Jerome Brunet 2020-02-13 83 break; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 84 6ae9ca9ce986bf Jerome Brunet 2020-02-13 85 case 32: 6ae9ca9ce986bf Jerome Brunet 2020-02-13 86 desc |= (AIU_I2S_SOURCE_DESC_MODE_24BIT | 6ae9ca9ce986bf Jerome Brunet 2020-02-13 87 AIU_I2S_SOURCE_DESC_MODE_32BIT); 6ae9ca9ce986bf Jerome Brunet 2020-02-13 88 break; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 89 6ae9ca9ce986bf Jerome Brunet 2020-02-13 90 default: 6ae9ca9ce986bf Jerome Brunet 2020-02-13 91 return -EINVAL; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 92 } 6ae9ca9ce986bf Jerome Brunet 2020-02-13 93 6ae9ca9ce986bf Jerome Brunet 2020-02-13 94 switch (params_channels(params)) { 6ae9ca9ce986bf Jerome Brunet 2020-02-13 95 case 2: /* Nothing to do */ 6ae9ca9ce986bf Jerome Brunet 2020-02-13 96 break; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 97 case 8: 6ae9ca9ce986bf Jerome Brunet 2020-02-13 98 desc |= AIU_I2S_SOURCE_DESC_MODE_8CH; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 99 break; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 100 default: 6ae9ca9ce986bf Jerome Brunet 2020-02-13 101 return -EINVAL; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 102 } 6ae9ca9ce986bf Jerome Brunet 2020-02-13 103 6ae9ca9ce986bf Jerome Brunet 2020-02-13 104 snd_soc_component_update_bits(component, AIU_I2S_SOURCE_DESC, 6ae9ca9ce986bf Jerome Brunet 2020-02-13 105 AIU_I2S_SOURCE_DESC_MODE_8CH | 6ae9ca9ce986bf Jerome Brunet 2020-02-13 106 AIU_I2S_SOURCE_DESC_MODE_24BIT | 6ae9ca9ce986bf Jerome Brunet 2020-02-13 107 AIU_I2S_SOURCE_DESC_MODE_32BIT | 6ae9ca9ce986bf Jerome Brunet 2020-02-13 108 AIU_I2S_SOURCE_DESC_MODE_SPLIT, 6ae9ca9ce986bf Jerome Brunet 2020-02-13 109 desc); 6ae9ca9ce986bf Jerome Brunet 2020-02-13 110 6ae9ca9ce986bf Jerome Brunet 2020-02-13 111 return 0; 6ae9ca9ce986bf Jerome Brunet 2020-02-13 112 } 6ae9ca9ce986bf Jerome Brunet 2020-02-13 113 :::::: The code at line 75 was first introduced by commit :::::: 6ae9ca9ce986bffe71fd0fbf9595de8500891b52 ASoC: meson: aiu: add i2s and spdif support :::::: TO: Jerome Brunet <jbrunet(a)baylibre.com&gt; :::::: CC: Mark Brown <broonie(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org