Don't overwrite TTM page flags.

diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c
index 8a44070..1a61ef6 100644 (file)
--- a/linux-core/drm_ttm.c
+++ b/linux-core/drm_ttm.c
@@ -264,7 +264,7 @@ int drm_ttm_set_user(struct drm_ttm *ttm,
 
        ttm->user_mm = mm;
        ttm->dummy_read_page = dummy_read_page;
-       ttm->page_flags = DRM_TTM_PAGE_USER |
+       ttm->page_flags |= DRM_TTM_PAGE_USER |
                ((write) ? DRM_TTM_PAGE_USER_WRITE : 0);