From: Christian König christian.koenig@amd.com

[ Upstream commit d330099115597bbc238d6758a4930e72b49ea9ba ]

AGP for example doesn't have a dma_address array.

Signed-off-by: Christian König christian.koenig@amd.com Acked-by: Alex Deucher alexander.deucher@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/20210614110517.1624-1-christia... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index f8015e0318d7..f7603be569fc 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -542,7 +542,7 @@ nouveau_bo_sync_for_device(struct nouveau_bo *nvbo) struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm; int i;

- if (!ttm_dma) + if (!ttm_dma || !ttm_dma->dma_address) return;

/* Don't waste time looping if the object is coherent */ @@ -562,7 +562,7 @@ nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo) struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm; int i;

- if (!ttm_dma) + if (!ttm_dma || !ttm_dma->dma_address) return;

/* Don't waste time looping if the object is coherent */