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-rw-r--r--drivers/dma/dw_dmac.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 711ebe954f5b..6ab440e532bf 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -198,6 +198,7 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
dma_async_tx_callback callback;
void *param;
struct dma_async_tx_descriptor *txd = &desc->txd;
+ struct dw_desc *child;
dev_vdbg(chan2dev(&dwc->chan), "descriptor %u complete\n", txd->cookie);
@@ -206,6 +207,12 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
param = txd->callback_param;
dwc_sync_desc_for_cpu(dwc, desc);
+
+ /* async_tx_ack */
+ list_for_each_entry(child, &desc->tx_list, desc_node)
+ async_tx_ack(&child->txd);
+ async_tx_ack(&desc->txd);
+
list_splice_init(&desc->tx_list, &dwc->free_list);
list_move(&desc->desc_node, &dwc->free_list);