diff options
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 4834c463c38..15b86a94949 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -350,10 +350,13 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, goto out2; /* - * Move nonexistent data. NOP. + * Don't move nonexistent data. Clear destination instead. */ - if (old_iomap == NULL && ttm == NULL) + if (old_iomap == NULL && + (ttm == NULL || ttm->state == tt_unpopulated)) { + memset_io(new_iomap, 0, new_mem->num_pages*PAGE_SIZE); goto out2; + } /* * TTM might be null for moves within the same region. |