drivers/regulator/core.o: warning: objtool: regulator_count_voltages()+0x95: return with modified stack frame

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   8ea5b2abd07e2280a332bd9c1a7f4dd15b9b6c13
commit: 37686b1353cfc30e127cef811959cdbcd0495d98 tracing: Improve "if" macro code generation
date:   5 weeks ago
config: x86_64-randconfig-b0-05100522 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        git checkout 37686b1353cfc30e127cef811959cdbcd0495d98
        # 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 warnings (new ones prefixed by >>):

>> drivers/regulator/core.o: warning: objtool: regulator_count_voltages()+0x95: return with modified stack frame
   drivers/regulator/core.o: warning: objtool: regulator_count_voltages()+0x0: stack state mismatch: cfa1=7+32 cfa2=7+8

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