linux-kernel - Re: [PATCH 4/4] powerpc: ibmebus: make ibmebus_bus

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Message-ID: <202402102142.uphiKeqw-lkp@intel.com>
Date: Sat, 10 Feb 2024 22:16:07 +0800
From: kernel test robot <lkp@...el.com>
To: "Ricardo B. Marliere" <ricardo@...liere.net>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	"Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
	"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>
Cc: oe-kbuild-all@...ts.linux.dev, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Ricardo B. Marliere" <ricardo@...liere.net>
Subject: Re: [PATCH 4/4] powerpc: ibmebus: make ibmebus_bus_type const

Hi Ricardo,

kernel test robot noticed the following build errors:

[auto build test ERROR on 41bccc98fb7931d63d03f326a746ac4d429c1dd3]

url:    https://github.com/intel-lab-lkp/linux/commits/Ricardo-B-Marliere/powerpc-vio-move-device-attributes-into-a-new-ifdef/20240210-080925
base:   41bccc98fb7931d63d03f326a746ac4d429c1dd3
patch link:    https://lore.kernel.org/r/20240209-bus_cleanup-powerpc2-v1-4-79a56dcaebb1%40marliere.net
patch subject: [PATCH 4/4] powerpc: ibmebus: make ibmebus_bus_type const
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20240210/202402102142.uphiKeqw-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240210/202402102142.uphiKeqw-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402102142.uphiKeqw-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/powerpc/platforms/pseries/ibmebus.c:58:17: error: conflicting type qualifiers for 'ibmebus_bus_type'
      58 | struct bus_type ibmebus_bus_type;
         |                 ^~~~~~~~~~~~~~~~
   In file included from arch/powerpc/platforms/pseries/ibmebus.c:51:
   arch/powerpc/include/asm/ibmebus.h:51:30: note: previous declaration of 'ibmebus_bus_type' with type 'const struct bus_type'
      51 | extern const struct bus_type ibmebus_bus_type;
         |                              ^~~~~~~~~~~~~~~~
   In file included from arch/powerpc/platforms/pseries/ibmebus.c:40:
   arch/powerpc/platforms/pseries/ibmebus.c:445:15: error: conflicting type qualifiers for 'ibmebus_bus_type'
     445 | EXPORT_SYMBOL(ibmebus_bus_type);
         |               ^~~~~~~~~~~~~~~~
   include/linux/export.h:56:28: note: in definition of macro '__EXPORT_SYMBOL'
      56 |         extern typeof(sym) sym;                                 \
         |                            ^~~
   include/linux/export.h:68:41: note: in expansion of macro '_EXPORT_SYMBOL'
      68 | #define EXPORT_SYMBOL(sym)              _EXPORT_SYMBOL(sym, "")
         |                                         ^~~~~~~~~~~~~~
   arch/powerpc/platforms/pseries/ibmebus.c:445:1: note: in expansion of macro 'EXPORT_SYMBOL'
     445 | EXPORT_SYMBOL(ibmebus_bus_type);
         | ^~~~~~~~~~~~~
   arch/powerpc/platforms/pseries/ibmebus.c:435:23: note: previous definition of 'ibmebus_bus_type' with type 'const struct bus_type'
     435 | const struct bus_type ibmebus_bus_type = {
         |                       ^~~~~~~~~~~~~~~~


vim +/ibmebus_bus_type +58 arch/powerpc/platforms/pseries/ibmebus.c

d7a301033f1990 arch/powerpc/kernel/ibmebus.c Heiko J Schick 2005-11-16  57  
6bccf755ff5324 arch/powerpc/kernel/ibmebus.c Joachim Fenkes 2007-03-09 @58  struct bus_type ibmebus_bus_type;
6bccf755ff5324 arch/powerpc/kernel/ibmebus.c Joachim Fenkes 2007-03-09  59  

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