Re: [PATCH v5 1/2] driver core: auxiliary bus: Introduce auxiliary device resource management

[kernel test robot <lkp@intel.com>]

Hi Raag,

kernel test robot noticed the following build warnings:

[auto build test WARNING on lee-mfd/for-mfd-next]
[also build test WARNING on driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus staging/staging-testing staging/staging-next staging/staging-linus linus/master v6.15-rc6 next-20250514]
[cannot apply to lee-mfd/for-mfd-fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Raag-Jadav/driver-core-auxiliary-bus-Introduce-auxiliary-device-resource-management/20250514-202748
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
patch link:    https://lore.kernel.org/r/20250514122432.4019606-2-raag.jadav%40intel.com
patch subject: [PATCH v5 1/2] driver core: auxiliary bus: Introduce auxiliary device resource management
config: arm-randconfig-003-20250514 (https://download.01.org/0day-ci/archive/20250514/202505142347.7wqzaBvR-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250514/202505142347.7wqzaBvR-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505142347.7wqzaBvR-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/bridge/ti-sn65dsi86.c:8:0:
   include/linux/auxiliary_bus.h: In function 'auxiliary_device_uninit':
   include/linux/auxiliary_bus.h:246:3: error: implicit declaration of function 'kfree'; did you mean '__free'? [-Werror=implicit-function-declaration]
      kfree(auxdev->resource);
      ^~~~~
      __free
   In file included from arch/arm/include/asm/pgtable-nommu.h:13:0,
                    from arch/arm/include/asm/pgtable.h:25,
                    from arch/arm/include/asm/uaccess.h:17,
                    from include/linux/uaccess.h:12,
                    from include/linux/sched/task.h:13,
                    from include/linux/sched/signal.h:9,
                    from include/linux/rcuwait.h:6,
                    from include/linux/percpu-rwsem.h:7,
                    from include/linux/fs.h:34,
                    from include/linux/debugfs.h:15,
                    from drivers/gpu/drm/bridge/ti-sn65dsi86.c:12:
   include/linux/slab.h: At top level:
>> include/linux/slab.h:472:6: warning: conflicting types for 'kfree'
    void kfree(const void *objp);
         ^~~~~
   In file included from drivers/gpu/drm/bridge/ti-sn65dsi86.c:8:0:
   include/linux/auxiliary_bus.h:246:3: note: previous implicit declaration of 'kfree' was here
      kfree(auxdev->resource);
      ^~~~~
   cc1: some warnings being treated as errors


vim +/kfree +472 include/linux/slab.h

7bd230a26648ac Suren Baghdasaryan 2024-03-21  471  
72d67229f522e3 Kees Cook          2021-11-05 @472  void kfree(const void *objp);
72d67229f522e3 Kees Cook          2021-11-05  473  void kfree_sensitive(const void *objp);
72d67229f522e3 Kees Cook          2021-11-05  474  size_t __ksize(const void *objp);
05a940656e1eb2 Kees Cook          2022-09-23  475  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki