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Revert "dma-buf: Report signaled links inside dma-fence-chain"

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This reverts commit 5de376bb43.

This change breaks synchronization of a timeline.
dma_fence_chain_find_seqno() might be a bit of a confusing name but
this function is not trying to find a particular seqno, is supposed to
give a fence to wait on for a particular point in the timeline.

In a timeline, a particular value is reached when all the points up to
and including that value have signaled.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/372958/
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Lionel Landwerlin 2020-06-25 15:34:42 +03:00 committed by Christian König
parent 55dd37e52d
commit 91fac86d86
1 changed files with 0 additions and 7 deletions
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7
drivers/dma-buf/dma-fence-chain.c
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@ -99,12 +99,6 @@ int dma_fence_chain_find_seqno(struct dma_fence **pfence, uint64_t seqno)
return -EINVAL;
dma_fence_chain_for_each(*pfence, &chain->base) {
if ((*pfence)->seqno < seqno) { /* already signaled */
dma_fence_put(*pfence);
*pfence = NULL;
break;
}
if ((*pfence)->context != chain->base.context ||
to_dma_fence_chain(*pfence)->prev_seqno < seqno)
break;
@ -228,7 +222,6 @@ EXPORT_SYMBOL(dma_fence_chain_ops);
* @chain: the chain node to initialize
* @prev: the previous fence
* @fence: the current fence
* @seqno: the sequence number (syncpt) of the fence within the chain
*
* Initialize a new chain node and either start a new chain or add the node to
* the existing chain of the previous fence.