[PATCH 0/3] Provide ttm_bo_{get,put} for TMM BO ref-counting

[Thomas Zimmermann]

TTM buffer objects provide ttm_bo_reference() and ttm_bo_unref() for
managing reference counters. This patch set introduces ttm_bo_get()
and ttm_ot_put(), which follow Linux kernel conventions.

A call to ttm_bo_unref() clears the supplied pointer to NULL. This is
unnecessary in most cases and occationally callers have to work around
this behaviour. ttm_bo_put() only releases the reference, but keeps
the pointer's value.

This patch set introduces ttm_bo_get() and ttm_bo_put(), and converts
TTM to the new functions. The old functions remain in place until all
callers have been converted.

Thomas Zimmermann (3):
  drm/ttm: Introduce ttm_bo_get() and ttm_bo_put() for ref counting
  drm/ttm: Replace ttm_bo_reference() with ttm_bo_get()
  drm/ttm: Replace ttm_bo_unref() with ttm_bo_put()

 drivers/gpu/drm/ttm/ttm_bo.c      | 10 ++++++++--
 drivers/gpu/drm/ttm/ttm_bo_util.c | 11 ++++++-----
 drivers/gpu/drm/ttm/ttm_bo_vm.c   | 18 ++++++++++--------
 include/drm/ttm/ttm_bo_api.h      | 25 ++++++++++++++++++++++++-
 4 files changed, 48 insertions(+), 16 deletions(-)

--
2.14.4