dmaengine: fix cyclic dma usage

[lisovros/linux_canprio.git] / drivers / dma / at_hdmac.c

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 445fdf8116959e91bff7469bf45c6283e057b198..bf0d7e4e345bd09babde30dfed59b4874f27b0fc 100644 (file)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -245,7 +245,9 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc)
        dev_vdbg(chan2dev(&atchan->chan_common),
                "descriptor %u complete\n", txd->cookie);
 
-       dma_cookie_complete(txd);
+       /* mark the descriptor as complete for non cyclic cases only */
+       if (!atc_chan_is_cyclic(atchan))
+               dma_cookie_complete(txd);
 
        /* move children to free_list */
        list_splice_init(&desc->tx_list, &atchan->free_list);