[PATCH 07/13] drm/ttm: test for dma_address array allocation failure

[j.gli...@gmail.com]

From: Jerome Glisse <jgli...@redhat.com>

Signed-off-by: Jerome Glisse <jglisse at redhat.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk at oracle.com>
Reviewed-by: Thomas Hellstrom <thellstrom at vmware.com>
---
 drivers/gpu/drm/ttm/ttm_tt.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 303bbba..2dab08b 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -293,7 +293,7 @@ struct ttm_tt *ttm_tt_create(struct ttm_bo_device *bdev, 
unsigned long size,
        ttm->dummy_read_page = dummy_read_page;

        ttm_tt_alloc_page_directory(ttm);
-       if (!ttm->pages) {
+       if (!ttm->pages || !ttm->dma_address) {
                ttm_tt_destroy(ttm);
                printk(KERN_ERR TTM_PFX "Failed allocating page table\n");
                return NULL;
-- 
1.7.7.1