[radeon-alex:drm-next-5.2-wip 64/66] drivers/gpu/drm/ttm/ttm_bo.c:52:10: sparse: symbol 'ttm_bo_glob_use_count' was not declared. Should it be static?

[kbuild test robot]

tree:   git://people.freedesktop.org/~agd5f/linux.git drm-next-5.2-wip
head:   a70be09f90c0b211b45bae50eb98617d75713297
commit: 5c4923919f015e80e76d3d88d5743d422d105ff2 [64/66] drm/ttm: fix re-init of global structures
reproduce:
        # apt-get install sparse
        git checkout 5c4923919f015e80e76d3d88d5743d422d105ff2
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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



sparse warnings: (new ones prefixed by >>)

   drivers/gpu/drm/ttm/ttm_bo.c:51:1: sparse: symbol 'ttm_global_mutex' was not declared. Should it be static?
>> drivers/gpu/drm/ttm/ttm_bo.c:52:10: sparse: symbol 'ttm_bo_glob_use_count' was not declared. Should it be static?
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   drivers/gpu/drm/ttm/ttm_bo.c:559:28: sparse: context imbalance in 'ttm_bo_cleanup_refs' - unexpected unlock
   drivers/gpu/drm/ttm/ttm_bo.c:619:27: sparse: context imbalance in 'ttm_bo_delayed_delete' - different lock contexts for basic block
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   drivers/gpu/drm/ttm/ttm_bo.c:787:12: sparse: context imbalance in 'ttm_mem_evict_first' - different lock contexts for basic block
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression
   drivers/gpu/drm/ttm/ttm_bo.c:1765:5: sparse: context imbalance in 'ttm_bo_swapout' - different lock contexts for basic block
   include/linux/reservation.h:220:20: sparse: dereference of noderef expression
   include/linux/reservation.h:220:45: sparse: dereference of noderef expression

Please review and possibly fold the followup patch.

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