----- Ursprungligt meddelande -----
> These page pointers shouldn't be visible to TTM in the first place, but
> until we fix that up, don't clear the page metadata because that
> will upset the exporter.
>
> Reported-by: Cristoph Haag <haagch.christoph@xxxxxxxxxxxxxxx>
> Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
> ---
> drivers/gpu/drm/ttm/ttm_tt.c | 3 +++
> 1 file changed, 3 insertions(+)
Reviewed-by: Jakob Bornecrantz <jakob@xxxxxxxxxx>
>
> diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
> index 9af9908..75f3190 100644
> --- a/drivers/gpu/drm/ttm/ttm_tt.c
> +++ b/drivers/gpu/drm/ttm/ttm_tt.c
> @@ -380,6 +380,9 @@ static void ttm_tt_clear_mapping(struct ttm_tt *ttm)
> pgoff_t i;
> struct page **page = ttm->pages;
>
> + if (ttm->page_flags & TTM_PAGE_FLAG_SG)
> + return;
> +
> for (i = 0; i < ttm->num_pages; ++i) {
> (*page)->mapping = NULL;
> (*page++)->index = 0;
> --
> 1.7.10.4
>
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