Re: [PATCH v2 6/9] power: supply: rt5033_charger: Add RT5033 charger device driver

From: kernel test robot
Date: Sat Apr 22 2023 - 21:23:12 EST

Hi Jakob,

kernel test robot noticed the following build warnings:

[auto build test WARNING on lee-mfd/for-mfd-next]
[also build test WARNING on next-20230421]
[cannot apply to sre-power-supply/for-next broonie-regulator/for-next linus/master lee-mfd/for-mfd-fixes v6.3-rc7]
[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/Jakob-Hauser/mfd-rt5033-Fix-chip-revision-readout/20230416-214502
base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
patch link: https://lore.kernel.org/r/665d8906ea7b84e0a248315e8395a80007b8bafb.1681646904.git.jahau%40rocketmail.com
patch subject: [PATCH v2 6/9] power: supply: rt5033_charger: Add RT5033 charger device driver
config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20230423/202304230924.lqgvPwZ0-lkp@xxxxxxxxx/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/0fbd385f9a1acd55a8d943560428b9d783f8047f
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jakob-Hauser/mfd-rt5033-Fix-chip-revision-readout/20230416-214502
git checkout 0fbd385f9a1acd55a8d943560428b9d783f8047f
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/xen/ drivers/power/supply/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304230924.lqgvPwZ0-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/power/supply/rt5033_charger.c:26:10: warning: variable 'state' is uninitialized when used here [-Wuninitialized]
return state;
^~~~~
drivers/power/supply/rt5033_charger.c:23:11: note: initialize the variable 'state' to silence this warning
int state;
^
= 0
1 warning generated.


vim +/state +26 drivers/power/supply/rt5033_charger.c

18
19 static int rt5033_get_charger_state(struct rt5033_charger *charger)
20 {
21 struct regmap *regmap = charger->rt5033->regmap;
22 unsigned int reg_data;
23 int state;
24
25 if (!regmap)
> 26 return state;
27
28 regmap_read(regmap, RT5033_REG_CHG_STAT, &reg_data);
29
30 switch (reg_data & RT5033_CHG_STAT_MASK) {
31 case RT5033_CHG_STAT_DISCHARGING:
32 state = POWER_SUPPLY_STATUS_DISCHARGING;
33 break;
34 case RT5033_CHG_STAT_CHARGING:
35 state = POWER_SUPPLY_STATUS_CHARGING;
36 break;
37 case RT5033_CHG_STAT_FULL:
38 state = POWER_SUPPLY_STATUS_FULL;
39 break;
40 case RT5033_CHG_STAT_NOT_CHARGING:
41 state = POWER_SUPPLY_STATUS_NOT_CHARGING;
42 break;
43 default:
44 state = POWER_SUPPLY_STATUS_UNKNOWN;
45 }
46
47 return state;
48 }
49

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