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drm/ttm: Fix a sync object leak. 

If there are multiple simultaneous waiters for the same buffer object,
a temporary reference to its sync object may be leaked.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom 2009-08-03 12:39:06 +02:00 committed by Dave Airlie
parent c9b7fb54f0
commit fee280d3fd
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/ttm/ttm_bo.c
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@ -1575,6 +1575,10 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
driver->sync_obj_unref(&sync_obj);
driver->sync_obj_unref(&tmp_obj);
spin_lock(&bo->lock);
} else {
spin_unlock(&bo->lock);
driver->sync_obj_unref(&sync_obj);
spin_lock(&bo->lock);
}
}
return 0;