drm/ttm: use ttm put pages function to properly restore cache attribute

On failure we need to make sure the page we free has wb cache
attribute. Do this pas call the proper ttm page helper function.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index f0c5ffd446d9b2b8f03c5cb175b1824d6ac9b71b..90527a2ce04cd47cbc054265c2cde0c084bd04f0 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -90,7 +90,10 @@ static struct page *__ttm_tt_get_page(struct ttm_tt *ttm, int index)
        }
        return p;
 out_err:
-       put_page(p);
+       INIT_LIST_HEAD(&h);
+       list_add(&p->lru, &h);
+       ttm_put_pages(&h, 1, ttm->page_flags,
+                     ttm->caching_state, &ttm->dma_address[index]);
        return NULL;
 }