tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git for-next
head:   722f20d707b77bc7e3d241a3600b46b995474087
commit: d4ee021c410f72bf2aacc61069ad6305120d2127 [18/29] power: supply: cpcap-charger: Limit voltage to 4.2V for battery
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-dirty
        git checkout d4ee021c410f72bf2aacc61069ad6305120d2127
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/power/supply/cpcap-charger.c:481:5: sparse: sparse: symbol 'cpcap_charger_voltage_to_regval' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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