From 5e2656804a34f58c2bf557465ab77f8a26a500eb Mon Sep 17 00:00:00 2001
From: Jerome Glisse <jglisse@redhat.com>
Date: Thu, 3 Nov 2011 01:22:39 -0400
Subject: 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 f0c5ffd..90527a2 100644
--- 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;
 }
 
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