[asoc:for-5.3 110/113] sound/soc/codecs/rt1011.c:1291:3: warning: this decimal constant is unsigned only in ISO C90

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3
head:   9b8e8b893ff52264df2b54a6820ae3c4bb820624
commit: d6e65bb7ff0d360c4c5462c3d0b237f2a07e5312 [110/113] ASoC: rt1011: Add RT1011 amplifier driver
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout d6e65bb7ff0d360c4c5462c3d0b237f2a07e5312
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=xtensa 

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

All warnings (new ones prefixed by >>):

   sound/soc/codecs/rt1011.c: In function 'rt1011_r0_load_mode_put':
>> sound/soc/codecs/rt1011.c:1291:3: warning: this decimal constant is unsigned only in ISO C90
      format = 2147483648; /* 2^24 * 128 */
      ^~~~~~
   sound/soc/codecs/rt1011.c: In function 'rt1011_calibrate':
   sound/soc/codecs/rt1011.c:2123:4: warning: this decimal constant is unsigned only in ISO C90
       format = 2147483648; /* 2^24 * 128 */
       ^~~~~~

vim +1291 sound/soc/codecs/rt1011.c

  1272	
  1273	static int rt1011_r0_load_mode_put(struct snd_kcontrol *kcontrol,
  1274			struct snd_ctl_elem_value *ucontrol)
  1275	{
  1276		struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
  1277		struct rt1011_priv *rt1011 = snd_soc_component_get_drvdata(component);
  1278		struct device *dev;
  1279		unsigned int r0_integer, r0_factor, format;
  1280	
  1281		if (ucontrol->value.integer.value[0] == rt1011->r0_reg)
  1282			return 0;
  1283	
  1284		if (!component->card->instantiated)
  1285			return 0;
  1286	
  1287		dev = regmap_get_device(rt1011->regmap);
  1288		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
  1289			rt1011->r0_reg = ucontrol->value.integer.value[0];
  1290	
> 1291			format = 2147483648; /* 2^24 * 128 */
  1292			r0_integer = format / rt1011->r0_reg / 128;
  1293			r0_factor = ((format / rt1011->r0_reg * 100) / 128)
  1294							- (r0_integer * 100);
  1295			dev_info(dev,	"New r0 resistance about %d.%02d ohm, reg=0x%X\n",
  1296				r0_integer, r0_factor, rt1011->r0_reg);
  1297	
  1298			if (rt1011->r0_reg)
  1299				rt1011_r0_load(rt1011);
  1300		}
  1301	
  1302		return 0;
  1303	}
  1304	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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