[PATCH 5/8] drm/vmwgfx: partially revert "Adapt validation code for reference-free lookups"

["Christian König" <ckoenig.leichtzumerken@gmail.com>]

This reverts commit 64ad2abfe9a628ce79859d072704bd1ef7682044.

To me it looks like this functionality was never actually used. At least
I can't find any protection in vmw_bo_free().

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: Zack Rusin <zack.rusin@broadcom.com>
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_validation.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c
index e7625b3f71e0..e11837e484aa 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.c
@@ -262,7 +262,8 @@ int vmw_validation_add_bo(struct vmw_validation_context *ctx,
 				bo_node->hash.key);
 		}
 		val_buf = &bo_node->base;
-		val_buf->bo = ttm_bo_get_unless_zero(&vbo->tbo);
+		vmw_bo_reference(vbo);
+		val_buf->bo = &vbo->tbo;
 		if (!val_buf->bo)
 			return -ESRCH;
 		val_buf->num_shared = 0;
@@ -656,7 +657,7 @@ void vmw_validation_unref_lists(struct vmw_validation_context *ctx)
 	struct vmw_validation_res_node *val;
 
 	list_for_each_entry(entry, &ctx->bo_list, base.head) {
-		ttm_bo_put(entry->base.bo);
+		drm_gem_object_put(&entry->base.bo->base);
 		entry->base.bo = NULL;
 	}
 
-- 
2.34.1