drivers/power/supply/surface_charger.c:69:21: sparse: sparse: incorrect type in initializer (different base types)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1140ab592e2ebf8153d2b322604031a8868ce7a5
commit: e61ffb344591fca443be4fc633290cbf15ee3298 power: supply: Add AC driver for Surface Aggregator Module
date:   5 weeks ago
config: i386-randconfig-s032-20210511 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e61ffb344591fca443be4fc633290cbf15ee3298
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout e61ffb344591fca443be4fc633290cbf15ee3298
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>


sparse warnings: (new ones prefixed by >>)
   drivers/power/supply/surface_charger.c:31:1: sparse: sparse: symbol '__raw_ssam_bat_get_sta' was not declared. Should it be static?
   drivers/power/supply/surface_charger.c:31:1: sparse: sparse: symbol 'ssam_bat_get_sta' was not declared. Should it be static?
   drivers/power/supply/surface_charger.c:37:1: sparse: sparse: symbol '__raw_ssam_bat_get_psrc' was not declared. Should it be static?
   drivers/power/supply/surface_charger.c:37:1: sparse: sparse: symbol 'ssam_bat_get_psrc' was not declared. Should it be static?
>> drivers/power/supply/surface_charger.c:69:21: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned int [usertype] old @@     got restricted __le32 [usertype] state @@
   drivers/power/supply/surface_charger.c:69:21: sparse:     expected unsigned int [usertype] old
   drivers/power/supply/surface_charger.c:69:21: sparse:     got restricted __le32 [usertype] state
>> drivers/power/supply/surface_charger.c:78:25: sparse: sparse: restricted __le32 degrades to integer
   drivers/power/supply/surface_charger.c:229:1: sparse: sparse: symbol 'surface_ac_pm_ops' was not declared. Should it be static?

vim +69 drivers/power/supply/surface_charger.c

    66	
    67	static int spwr_ac_update_unlocked(struct spwr_ac_device *ac)
    68	{
  > 69		u32 old = ac->state;
    70		int status;
    71	
    72		lockdep_assert_held(&ac->lock);
    73	
    74		status = ssam_retry(ssam_bat_get_psrc, ac->sdev, &ac->state);
    75		if (status < 0)
    76			return status;
    77	
  > 78		return old != ac->state;
    79	}
    80	

---
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