[PATCH v2 1/1] drm/mm: optimize rb_hole_addr rbtree search

[kbuild test robot]

Hi Nirmoy,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm-tip/drm-tip linus/master v5.7-rc3 next-20200501]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Nirmoy-Das/drm-mm-optimize-rb_hole_addr-rbtree-search/20200501-165835
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-191-gc51a0382-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/drm_mm.c:248:6: sparse: sparse: symbol 'insert_hole_addr' was not declared. Should it be static?
   drivers/gpu/drm/drm_mm.c:401:24: sparse: sparse: Using plain integer as NULL pointer
   drivers/gpu/drm/drm_mm.c:441:24: sparse: sparse: Using plain integer as NULL pointer

Please review and possibly fold the followup patch.

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