drivers/rtc/rtc-bd70528.c:365: undefined reference to `bd70528_wdt_lock'

[kbuild test robot]

Hi Matti,

FYI, the error/warning still remains.

tree:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   33920f1ec5bf47c5c0a1d2113989bdd9dfb3fae9
commit: 32a4a4ebf76848828d67f519d07af9eadb6e8300 rtc: bd70528: Initial support for ROHM bd70528 RTC
date:   6 weeks ago
config: x86_64-randconfig-s0-201930 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
reproduce:
        git checkout 32a4a4ebf76848828d67f519d07af9eadb6e8300
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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

All errors (new ones prefixed by >>):

   ld: drivers/rtc/rtc-bd70528.o: in function `bd70528_alm_enable':
>> drivers/rtc/rtc-bd70528.c:365: undefined reference to `bd70528_wdt_lock'
>> ld: drivers/rtc/rtc-bd70528.c:377: undefined reference to `bd70528_wdt_unlock'
   ld: drivers/rtc/rtc-bd70528.o: in function `bd70528_set_rtc_based_timers':
>> drivers/rtc/rtc-bd70528.c:126: undefined reference to `bd70528_wdt_set'
   ld: drivers/rtc/rtc-bd70528.o: in function `bd70528_set_time':
   drivers/rtc/rtc-bd70528.c:329: undefined reference to `bd70528_wdt_lock'
   ld: drivers/rtc/rtc-bd70528.c:331: undefined reference to `bd70528_wdt_unlock'

vim +365 drivers/rtc/rtc-bd70528.c

   355	
   356	static int bd70528_alm_enable(struct device *dev, unsigned int enabled)
   357	{
   358		int ret;
   359		unsigned int enableval = BD70528_MASK_ALM_EN;
   360		struct bd70528_rtc *r = dev_get_drvdata(dev);
   361	
   362		if (enabled)
   363			enableval = 0;
   364	
 > 365		bd70528_wdt_lock(r->mfd);
   366		ret = bd70528_set_wake(r->mfd, enabled, NULL);
   367		if (ret) {
   368			dev_err(dev, "Failed to change wake state\n");
   369			goto out_unlock;
   370		}
   371		ret = regmap_update_bits(r->mfd->regmap, BD70528_REG_RTC_ALM_MASK,
   372					 BD70528_MASK_ALM_EN, enableval);
   373		if (ret)
   374			dev_err(dev, "Failed to change alarm state\n");
   375	
   376	out_unlock:
 > 377		bd70528_wdt_unlock(r->mfd);
   378		return ret;
   379	}
   380	

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