[Intel-gfx] [PATCH 06/11] dma-buf: warn about containers in dma_resv object
Christian König
ckoenig.leichtzumerken at gmail.com
Mon Jan 24 13:03:23 UTC 2022
Drivers should not add containers as shared fences to the dma_resv
object, instead each fence should be added individually.
Signed-off-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/dma-buf/dma-resv.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 6dd9a40b55d4..e8a0c1d51da2 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -256,6 +256,11 @@ void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence)
dma_resv_assert_held(obj);
+ /* Drivers should not add containers here, instead add each fence
+ * individually.
+ */
+ WARN_ON(dma_fence_is_container(fence));
+
fobj = dma_resv_shared_list(obj);
count = fobj->shared_count;
--
2.25.1
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