Re: [PATCH v9 11/20] drm/imagination: Add GEM and VM related code

[kernel test robot]

Hi Donald Sarah,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes linus/master v6.7-rc2]
[cannot apply to drm/drm-next drm-tip/drm-tip next-20231124]
[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/Donald-Robson/drm-gpuvm-Helper-to-get-range-of-unmap-from-a-remap-op/20231123-013514
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/3c96dd170efe759b73897e3675d7310a7c4b06d0.1700668843.git.donald.robson%40imgtec.com
patch subject: [PATCH v9 11/20] drm/imagination: Add GEM and VM related code
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20231124/202311242159.hh8MWiAm-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231124/202311242159.hh8MWiAm-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/202311242159.hh8MWiAm-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/imagination/pvr_vm.c:531:6: warning: no previous prototype for function 'pvr_gpuvm_free' [-Wmissing-prototypes]
     531 | void pvr_gpuvm_free(struct drm_gpuvm *gpuvm)
         |      ^
   drivers/gpu/drm/imagination/pvr_vm.c:531:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     531 | void pvr_gpuvm_free(struct drm_gpuvm *gpuvm)
         | ^
         | static 
   drivers/gpu/drm/imagination/pvr_vm.c:112:22: warning: unused function 'to_pvr_vm_gpuva' [-Wunused-function]
     112 | struct pvr_vm_gpuva *to_pvr_vm_gpuva(struct drm_gpuva *gpuva)
         |                      ^
   2 warnings generated.
--
>> drivers/gpu/drm/imagination/pvr_mmu.c:285: warning: Function parameter or member 'flags' not described in 'pvr_mmu_backing_page_sync'
--
>> drivers/gpu/drm/imagination/pvr_vm.c:65: warning: Function parameter or member 'gpuvm_mgr' not described in 'pvr_vm_context'


vim +/pvr_gpuvm_free +531 drivers/gpu/drm/imagination/pvr_vm.c

   530	
 > 531	void pvr_gpuvm_free(struct drm_gpuvm *gpuvm)
   532	{
   533	

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