Sasha Levin
2021-Jun-28 21:20 UTC
[Nouveau] [PATCH AUTOSEL 5.12 4/5] drm/nouveau: fix dma_address check for CPU/GPU sync
From: Christian K?nig <christian.koenig at amd.com>
[ Upstream commit d330099115597bbc238d6758a4930e72b49ea9ba ]
AGP for example doesn't have a dma_address array.
Signed-off-by: Christian K?nig <christian.koenig at amd.com>
Acked-by: Alex Deucher <alexander.deucher at amd.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20210614110517.1624-1-christian.koenig
at amd.com
Signed-off-by: Sasha Levin <sashal at 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 f2720a006199..0a47a2a5553d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -549,7 +549,7 @@ nouveau_bo_sync_for_device(struct nouveau_bo *nvbo)
struct ttm_tt *ttm_dma = (struct ttm_tt *)nvbo->bo.ttm;
int i, j;
- if (!ttm_dma)
+ if (!ttm_dma || !ttm_dma->dma_address)
return;
if (!ttm_dma->pages) {
NV_DEBUG(drm, "ttm_dma 0x%p: pages NULL\n", ttm_dma);
@@ -585,7 +585,7 @@ nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo)
struct ttm_tt *ttm_dma = (struct ttm_tt *)nvbo->bo.ttm;
int i, j;
- if (!ttm_dma)
+ if (!ttm_dma || !ttm_dma->dma_address)
return;
if (!ttm_dma->pages) {
NV_DEBUG(drm, "ttm_dma 0x%p: pages NULL\n", ttm_dma);
--
2.30.2