linux-kernel - Re: [PATCH 2/2] power: supply: Add bd718(15/28/78) charger driver

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Message-ID: <202508180501.24kGNF9b-lkp@intel.com>
Date: Mon, 18 Aug 2025 05:33:22 +0800
From: kernel test robot <lkp@...el.com>
To: Andreas Kemnade <andreas@...nade.info>,
	Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
	Matti Vaittinen <mazziesaccount@...il.com>,
	Lee Jones <lee@...nel.org>, Sebastian Reichel <sre@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, Andreas Kemnade <andreas@...nade.info>
Subject: Re: [PATCH 2/2] power: supply: Add bd718(15/28/78) charger driver

Hi Andreas,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 8f5ae30d69d7543eee0d70083daf4de8fe15d585]

url:    https://github.com/intel-lab-lkp/linux/commits/Andreas-Kemnade/mfd-bd71828-bd71815-prepare-for-power-supply-support/20250817-032146
base:   8f5ae30d69d7543eee0d70083daf4de8fe15d585
patch link:    https://lore.kernel.org/r/20250816-bd71828-charger-v1-2-71b11bde5c73%40kemnade.info
patch subject: [PATCH 2/2] power: supply: Add bd718(15/28/78) charger driver
config: m68k-randconfig-r111-20250818 (https://download.01.org/0day-ci/archive/20250818/202508180501.24kGNF9b-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.5.0
reproduce: (https://download.01.org/0day-ci/archive/20250818/202508180501.24kGNF9b-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508180501.24kGNF9b-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/power/supply/bd71828-power.c:257:26: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __be16 [addressable] [usertype] tmp_curr @@     got unsigned short [usertype] @@
   drivers/power/supply/bd71828-power.c:257:26: sparse:     expected restricted __be16 [addressable] [usertype] tmp_curr
   drivers/power/supply/bd71828-power.c:257:26: sparse:     got unsigned short [usertype]
>> drivers/power/supply/bd71828-power.c:259:36: sparse: sparse: cast from restricted __be16

vim +257 drivers/power/supply/bd71828-power.c

   237	
   238	static int bd71828_get_current_ds_adc(struct bd71828_power *pwr, int *curr, int *curr_avg)
   239	{
   240		__be16 tmp_curr;
   241		char *tmp = (char *)&tmp_curr;
   242		int dir = 1;
   243		int regs[] = { pwr->regs->ibat, pwr->regs->ibat_avg };
   244		int *vals[] = { curr, curr_avg };
   245		int ret, i;
   246	
   247		for (dir = 1, i = 0; i < ARRAY_SIZE(regs); i++) {
   248			ret = regmap_bulk_read(pwr->regmap, regs[i], &tmp_curr,
   249					       sizeof(tmp_curr));
   250			if (ret)
   251				break;
   252	
   253			if (*tmp & BD7182x_MASK_CURDIR_DISCHG)
   254				dir = -1;
   255	
   256			*tmp &= BD7182x_MASK_IBAT_U;
 > 257			tmp_curr = be16_to_cpu(tmp_curr);
   258	
 > 259			*vals[i] = dir * ((int)tmp_curr) * pwr->curr_factor;
   260		}
   261	
   262		return ret;
   263	}
   264	

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