NAK, the newly added fence must always be newer than the existing one.
Christian. Am 06.03.2018 um 04:09 schrieb Monk Liu:
Change-Id: If6a979ba9fd6c923b82212f35f07a9ff31c86767 Signed-off-by: Monk Liu <monk....@amd.com> --- drivers/dma-buf/reservation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma-buf/reservation.c b/drivers/dma-buf/reservation.c index 314eb10..29b7e45 100644 --- a/drivers/dma-buf/reservation.c +++ b/drivers/dma-buf/reservation.c @@ -118,7 +118,7 @@ reservation_object_add_shared_inplace(struct reservation_object *obj, old_fence = rcu_dereference_protected(fobj->shared[i], reservation_object_held(obj));- if (old_fence->context == fence->context) {+ if (dma_fence_is_later(fence, old_fence)) { /* memory barrier is added by write_seqcount_begin */ RCU_INIT_POINTER(fobj->shared[i], fence); write_seqcount_end(&obj->seq);
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