amdgpu: use ttm_uncached

Author: pepijndevos

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -1120,7 +1120,7 @@ static struct ttm_tt *amdgpu_ttm_tt_create(struct ttm_buffer_object *bo,
 	if (abo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 		caching = ttm_write_combined;
 	else
-		caching = ttm_cached;
+		caching = ttm_uncached;
 
 	/* allocate space for the uninitialized page entries */
 	if (ttm_sg_tt_init(&gtt->ttm, bo, page_flags, caching)) {