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dma-buf: make fence mandatory for dma_resv_add_excl_fence v2

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Calling dma_resv_add_excl_fence() with the fence as NULL and expecting
that that this frees up the fences is simply abuse of the internals of
the dma_resv object.

v2: drop the fence pruning completely.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211129120659.1815-4-christian.koenig@amd.com
This commit is contained in:
Christian König 2021-11-11 10:46:46 +01:00
parent f8be2c5971
commit c99907c723
1 changed files with 1 additions and 2 deletions
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3
drivers/dma-buf/dma-resv.c
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@ -305,8 +305,7 @@ void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence)
if (old)
i = old->shared_count;
if (fence)
dma_fence_get(fence);
dma_fence_get(fence);
write_seqcount_begin(&obj->seq);
/* write_seqcount_begin provides the necessary memory barrier */