This way we can even pipeline imported BO evictions.

Signed-off-by: Christian König <christian.koe...@amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo_util.c | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c 
b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 895d77d799e4..97f35c4bda35 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -486,7 +486,6 @@ static int ttm_buffer_object_transfer(struct 
ttm_buffer_object *bo,
                                      struct ttm_buffer_object **new_obj)
 {
        struct ttm_transfer_obj *fbo;
-       int ret;
 
        fbo = kmalloc(sizeof(*fbo), GFP_KERNEL);
        if (!fbo)
@@ -517,10 +516,7 @@ static int ttm_buffer_object_transfer(struct 
ttm_buffer_object *bo,
        kref_init(&fbo->base.kref);
        fbo->base.destroy = &ttm_transfered_destroy;
        fbo->base.acc_size = 0;
-       fbo->base.resv = &fbo->base.ttm_resv;
-       reservation_object_init(fbo->base.resv);
-       ret = reservation_object_trylock(fbo->base.resv);
-       WARN_ON(!ret);
+       reservation_object_init(&fbo->base.ttm_resv);
 
        *new_obj = &fbo->base;
        return 0;
@@ -716,8 +712,6 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
                if (ret)
                        return ret;
 
-               reservation_object_add_excl_fence(ghost_obj->resv, fence);
-
                /**
                 * If we're not moving to fixed memory, the TTM object
                 * needs to stay alive. Otherwhise hang it on the ghost
@@ -729,7 +723,6 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
                else
                        bo->ttm = NULL;
 
-               ttm_bo_unreserve(ghost_obj);
                ttm_bo_put(ghost_obj);
        }
 
@@ -772,8 +765,6 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
                if (ret)
                        return ret;
 
-               reservation_object_add_excl_fence(ghost_obj->resv, fence);
-
                /**
                 * If we're not moving to fixed memory, the TTM object
                 * needs to stay alive. Otherwhise hang it on the ghost
@@ -785,7 +776,6 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
                else
                        bo->ttm = NULL;
 
-               ttm_bo_unreserve(ghost_obj);
                ttm_bo_put(ghost_obj);
 
        } else if (from->flags & TTM_MEMTYPE_FLAG_FIXED) {
@@ -841,16 +831,10 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo)
        if (ret)
                return ret;
 
-       ret = reservation_object_copy_fences(ghost->resv, bo->resv);
-       /* Last resort, wait for the BO to be idle when we are OOM */
-       if (ret)
-               ttm_bo_wait(bo, false, false);
-
        memset(&bo->mem, 0, sizeof(bo->mem));
        bo->mem.mem_type = TTM_PL_SYSTEM;
        bo->ttm = NULL;
 
-       ttm_bo_unreserve(ghost);
        ttm_bo_put(ghost);
 
        return 0;
-- 
2.17.1

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