Re: [PATCH 1/2] ALSA: cs35l41: Add shared boost feature

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

Hi Lucas,

I love your patch! Perhaps something to improve:

[auto build test WARNING on broonie-sound/for-next]
[also build test WARNING on tiwai-sound/for-next tiwai-sound/for-linus linus/master v6.2-rc7 next-20230208]
[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/Lucas-Tanure/ALSA-cs35l41-Add-shared-boost-feature/20230207-184238
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
patch link:    https://lore.kernel.org/r/20230207104021.2842-2-lucas.tanure%40collabora.com
patch subject: [PATCH 1/2] ALSA: cs35l41: Add shared boost feature
config: i386-randconfig-a011 (https://download.01.org/0day-ci/archive/20230208/202302081911.MDwfUTfx-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/c1726800667180cd46986c3578e635bafa8bf01a
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Lucas-Tanure/ALSA-cs35l41-Add-shared-boost-feature/20230207-184238
        git checkout c1726800667180cd46986c3578e635bafa8bf01a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash sound/soc/codecs/

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

All warnings (new ones prefixed by >>):

>> sound/soc/codecs/cs35l41-lib.c:1160:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized]
           case CS35L41_SHD_BOOST_PASS:
                ^~~~~~~~~~~~~~~~~~~~~~
   sound/soc/codecs/cs35l41-lib.c:1169:9: note: uninitialized use occurs here
           return ret;
                  ^~~
   sound/soc/codecs/cs35l41-lib.c:1136:9: note: initialize the variable 'ret' to silence this warning
           int ret;
                  ^
                   = 0
   1 warning generated.


vim +/ret +1160 sound/soc/codecs/cs35l41-lib.c

  1132	
  1133	int cs35l41_init_boost(struct device *dev, struct regmap *regmap,
  1134			       struct cs35l41_hw_cfg *hw_cfg)
  1135	{
  1136		int ret;
  1137	
  1138		switch (hw_cfg->bst_type) {
  1139		case CS35L41_SHD_BOOST_ACTV:
  1140			regmap_multi_reg_write(regmap, cs35l41_actv_seq, ARRAY_SIZE(cs35l41_actv_seq));
  1141			fallthrough;
  1142		case CS35L41_INT_BOOST:
  1143			ret = cs35l41_boost_config(dev, regmap, hw_cfg->bst_ind,
  1144						   hw_cfg->bst_cap, hw_cfg->bst_ipk);
  1145			if (ret)
  1146				dev_err(dev, "Error in Boost DT config: %d\n", ret);
  1147			break;
  1148		case CS35L41_EXT_BOOST:
  1149		case CS35L41_EXT_BOOST_NO_VSPK_SWITCH:
  1150			/* Only CLSA0100 doesn't use GPIO as VSPK switch, but even on that laptop we can
  1151			 * toggle GPIO1 as is not connected to anything.
  1152			 * There will be no other device without VSPK switch.
  1153			 */
  1154			regmap_write(regmap, CS35L41_GPIO1_CTRL1, 0x00000001);
  1155			regmap_multi_reg_write(regmap, cs35l41_reset_to_safe,
  1156					       ARRAY_SIZE(cs35l41_reset_to_safe));
  1157			ret = regmap_update_bits(regmap, CS35L41_PWR_CTRL2, CS35L41_BST_EN_MASK,
  1158						 CS35L41_BST_DIS_FET_OFF << CS35L41_BST_EN_SHIFT);
  1159			break;
> 1160		case CS35L41_SHD_BOOST_PASS:
  1161			regmap_multi_reg_write(regmap, cs35l41_pass_seq, ARRAY_SIZE(cs35l41_pass_seq));
  1162			break;
  1163		default:
  1164			dev_err(dev, "Boost type %d not supported\n", hw_cfg->bst_type);
  1165			ret = -EINVAL;
  1166			break;
  1167		}
  1168	
  1169		return ret;
  1170	}
  1171	EXPORT_SYMBOL_GPL(cs35l41_init_boost);
  1172	

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