Re: [PATCH v1] regulator: event: Add regulator netlink event support

[kernel test robot]

Hi Naresh,

kernel test robot noticed the following build errors:

[auto build test ERROR on 753e4d5c433da57da75dd4c3e1aececc8e874a62]

url:    https://github.com/intel-lab-lkp/linux/commits/Naresh-Solanki/regulator-event-Add-regulator-netlink-event-support/20231121-034604
base:   753e4d5c433da57da75dd4c3e1aececc8e874a62
patch link:    https://lore.kernel.org/r/20231120194311.3581036-1-naresh.solanki%409elements.com
patch subject: [PATCH v1] regulator: event: Add regulator netlink event support
config: loongarch-randconfig-r071-20231121 (https://download.01.org/0day-ci/archive/20231121/202311211612.t2XcssHt-lkp@xxxxxxxxx/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231121/202311211612.t2XcssHt-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311211612.t2XcssHt-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/regulator/event.c:110:5: error: conflicting types for 'reg_generate_netlink_event'; have 'int(const char *, const char *, u8,  int)' {aka 'int(const char *, const char *, unsigned char,  int)'}
     110 | int reg_generate_netlink_event(const char *device_class, const char *bus_id, u8 type, int data)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/regulator/event.c:6:
   drivers/regulator/regnl.h:6:5: note: previous declaration of 'reg_generate_netlink_event' with type 'int(const char *, u64)' {aka 'int(const char *, long long unsigned int)'}
       6 | int reg_generate_netlink_event(const char *reg_name, u64 event);
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/linkage.h:7,
                    from include/linux/kernel.h:18,
                    from include/linux/skbuff.h:13,
                    from include/linux/netlink.h:7,
                    from include/net/netlink.h:6,
                    from drivers/regulator/event.c:3:
   drivers/regulator/event.c:114:15: error: conflicting types for 'reg_generate_netlink_event'; have 'int(const char *, const char *, u8,  int)' {aka 'int(const char *, const char *, unsigned char,  int)'}
     114 | EXPORT_SYMBOL(reg_generate_netlink_event);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/export.h:74:28: note: in definition of macro '__EXPORT_SYMBOL'
      74 |         extern typeof(sym) sym;                                 \
         |                            ^~~
   include/linux/export.h:86:41: note: in expansion of macro '_EXPORT_SYMBOL'
      86 | #define EXPORT_SYMBOL(sym)              _EXPORT_SYMBOL(sym, "")
         |                                         ^~~~~~~~~~~~~~
   drivers/regulator/event.c:114:1: note: in expansion of macro 'EXPORT_SYMBOL'
     114 | EXPORT_SYMBOL(reg_generate_netlink_event);
         | ^~~~~~~~~~~~~
   drivers/regulator/regnl.h:6:5: note: previous declaration of 'reg_generate_netlink_event' with type 'int(const char *, u64)' {aka 'int(const char *, long long unsigned int)'}
       6 | int reg_generate_netlink_event(const char *reg_name, u64 event);
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +110 drivers/regulator/event.c

   108	
   109	#else
 > 110	int reg_generate_netlink_event(const char *device_class, const char *bus_id, u8 type, int data)
   111	{
   112		return 0;
   113	}
   114	EXPORT_SYMBOL(reg_generate_netlink_event);
   115	

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