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 errors:

[auto build test ERROR on lee-mfd/for-mfd-next]
[also build test ERROR 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-002-20250514 (https://download.01.org/0day-ci/archive/20250514/202505142345.jLaHG90C-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250514/202505142345.jLaHG90C-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/202505142345.jLaHG90C-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/base/auxiliary_sysfs.c:6:
>> include/linux/auxiliary_bus.h:246:3: error: call to undeclared function 'kfree'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     246 |                 kfree(auxdev->resource);
         |                 ^
   In file included from drivers/base/auxiliary_sysfs.c:7:
>> include/linux/slab.h:472:6: error: conflicting types for 'kfree'
     472 | void kfree(const void *objp);
         |      ^
   include/linux/auxiliary_bus.h:246:3: note: previous implicit declaration is here
     246 |                 kfree(auxdev->resource);
         |                 ^
   2 errors generated.


vim +/kfree +246 include/linux/auxiliary_bus.h

   242	
   243	static inline void auxiliary_device_uninit(struct auxiliary_device *auxdev)
   244	{
   245		if (auxdev->resource)
 > 246			kfree(auxdev->resource);
   247	
   248		mutex_destroy(&auxdev->sysfs.lock);
   249		put_device(&auxdev->dev);
   250	}
   251	

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