[PATCH v3 04/12] drm/ttm: Set dma addr to null after freee

Fixes oops.

Signed-off-by: Andrey Grodzovsky andrey.grodzovsky@amd.com --- drivers/gpu/drm/ttm/ttm_page_alloc.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index b40a467..b0df328 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -1160,6 +1160,8 @@ void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt) dma_unmap_page(dev, tt->dma_address[i], num_pages * PAGE_SIZE, DMA_BIDIRECTIONAL);

+ tt->dma_address[i] = 0; + i += num_pages; } ttm_pool_unpopulate(&tt->ttm);