[PATCH 13/40] dmaengine: iop-adma: convert callback to helper function

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Convert driver to use the new helper function for callback

Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
---
 drivers/dma/iop-adma.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index f039cfa..409e75f 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -65,14 +65,16 @@ iop_adma_run_tx_complete_actions(struct iop_adma_desc_slot *desc,
 
 	BUG_ON(tx->cookie < 0);
 	if (tx->cookie > 0) {
+		struct dma_desc_callback cb;
+
 		cookie = tx->cookie;
 		tx->cookie = 0;
 
 		/* call the callback (must not sleep or submit new
 		 * operations to this channel)
 		 */
-		if (tx->callback)
-			tx->callback(tx->callback_param);
+		dmaengine_desc_get_callback(tx, &cb);
+		dmaengine_desc_callback_invoke(&cb, NULL);
 
 		dma_descriptor_unmap(tx);
 		if (desc->group_head)

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