[PATCH 1/3] drm/ttm: add set_pages_wb for handling page order more than zero

[Roger He <Hongbo.He@xxxxxxx>]

Change-Id: Idf5ccb579d264b343199d8b8344bddeec2c0019f
Signed-off-by: Roger He <Hongbo.He@xxxxxxx>
---
 drivers/gpu/drm/ttm/ttm_page_alloc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index a8b2bfa..cdbb731 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -223,6 +223,17 @@ static struct kobj_type ttm_pool_kobj_type = {
 static struct ttm_pool_manager *_manager;
 
 #ifndef CONFIG_X86
+static int set_pages_wb(struct page *page, int numpages)
+{
+#if IS_ENABLED(CONFIG_AGP)
+	int i;
+
+	for (i = 0; i < numpages; i++)
+		unmap_page_from_agp(page++);
+#endif
+	return 0;
+}
+
 static int set_pages_array_wb(struct page **pages, int addrinarray)
 {
 #if IS_ENABLED(CONFIG_AGP)
-- 
2.7.4

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