[Intel-gfx] [drm-intel:drm-intel-gt-next 2/8] drivers/gpu/drm/i915/selftests/i915_buddy.c:777:5: error: no previous prototype for 'i915_buddy_mock_selftests'

[kernel test robot]

tree:   git://anongit.freedesktop.org/drm-intel drm-intel-gt-next
head:   13c2ceb6addb6b14468e09b75832c98909eed8e7
commit: 88be9a0a06b73ecd85a688a7c174c941e9692e92 [2/8] drm/i915/ttm: add ttm_buddy_man
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        git remote add drm-intel git://anongit.freedesktop.org/drm-intel
        git fetch --no-tags drm-intel drm-intel-gt-next
        git checkout 88be9a0a06b73ecd85a688a7c174c941e9692e92
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

Note: the drm-intel/drm-intel-gt-next HEAD bfde26df7af4e8ea894008dfda1d7d54a834dcd4 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/i915/i915_buddy.c:411:
>> drivers/gpu/drm/i915/selftests/i915_buddy.c:777:5: error: no previous prototype for 'i915_buddy_mock_selftests' [-Werror=missing-prototypes]
     777 | int i915_buddy_mock_selftests(void)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/i915_buddy_mock_selftests +777 drivers/gpu/drm/i915/selftests/i915_buddy.c

   776	
 > 777	int i915_buddy_mock_selftests(void)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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