Hi Daniel,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on pm/linux-next]
[also build test ERROR on shawnguo/for-next pavel-linux-leds/for-next v5.6-rc4 next-20200302]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Daniel-Baluta/Introduce-multi-PM-domains-helpers/20200303-050542
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: openrisc-randconfig-a001-20200302 (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=9.2.0 make.cross ARCH=openrisc 

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

All errors (new ones prefixed by >>):

   or1k-linux-ld: drivers/opp/core.o: in function `dev_multi_pm_attach':
>> include/linux/pm_domain.h:396: multiple definition of `dev_multi_pm_attach'; drivers/base/platform.o:include/linux/pm_domain.h:396: first defined here
   or1k-linux-ld: drivers/opp/core.o: in function `dev_multi_pm_detach':
>> include/linux/pm_domain.h:416: multiple definition of `dev_multi_pm_detach'; drivers/base/platform.o:include/linux/pm_domain.h:416: first defined here
   or1k-linux-ld: drivers/opp/of.o: in function `dev_multi_pm_attach':
>> include/linux/pm_domain.h:396: multiple definition of `dev_multi_pm_attach'; drivers/base/platform.o:include/linux/pm_domain.h:396: first defined here
   or1k-linux-ld: drivers/opp/of.o: in function `dev_multi_pm_detach':
>> include/linux/pm_domain.h:416: multiple definition of `dev_multi_pm_detach'; drivers/base/platform.o:include/linux/pm_domain.h:416: first defined here

vim +396 include/linux/pm_domain.h

   394	
   395	struct dev_multi_pm_domain_data *dev_multi_pm_attach(struct device *dev)
 > 396	{
   397		return NULL;
   398	}
   399	
   400	static inline struct device *dev_pm_domain_attach_by_id(struct device *dev,
   401								unsigned int index)
   402	{
   403		return NULL;
   404	}
   405	static inline struct device *dev_pm_domain_attach_by_name(struct device *dev,
   406								  const char *name)
   407	{
   408		return NULL;
   409	}
   410	static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
   411	static inline int dev_pm_domain_start(struct device *dev)
   412	{
   413		return 0;
   414	}
   415	
 > 416	void dev_multi_pm_detach(struct dev_multi_pm_domain_data *mpd) {}
   417	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org