[Intel-gfx] [PATCH 3/6] dma-buf: Warn about dma_fence_chain container rules v2

[Thomas Hellström]

On Fri, 2022-02-04 at 11:04 +0100, Christian König wrote:
> Chaining of dma_fence_chain objects is only allowed through the prev
> fence and not through the contained fence.
> 
> Warn about that when we create a dma_fence_chain.
> 
> v2: fix comment style
> 
> Signed-off-by: Christian König <christian.koenig at amd.com>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> Reviewed-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>

It looks like this blows up in generic drm code...

https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_22201/shard-skl10/igt@syncobj_timeline@transfer-timeline-point.html

/Thomas