[PATCH v3 2/9] media: mgb4: use dmaengine_desc_set_callback()

[Frank . Li]

From: Frank Li <Frank.Li@xxxxxxx>

Replace open-coded assignments to callback and callback_param fields
of struct dma_async_tx_descriptor with calls to the
dmaengine_desc_set_callback() helper.

No functional change intended. Prepare to make struct
dma_async_tx_descriptor private to the DMA engine.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
change in v3
  split to simple patch
https://lore.kernel.org/imx/38f6a9abf37b06318bb6429ac04807941ca8d558.camel@xxxxxxxxxxxxx/
---
 drivers/media/pci/mgb4/mgb4_dma.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/pci/mgb4/mgb4_dma.c b/drivers/media/pci/mgb4/mgb4_dma.c
index cae888e6504b0..c9a15c625be65 100644
--- a/drivers/media/pci/mgb4/mgb4_dma.c
+++ b/drivers/media/pci/mgb4/mgb4_dma.c
@@ -55,8 +55,7 @@ int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write,
 		return -EIO;
 	}
 
-	tx->callback = chan_irq;
-	tx->callback_param = chan;
+	dmaengine_desc_set_callback(tx, chan_irq, NULL, chan);
 
 	ret = dma_submit_error(dmaengine_submit(tx));
 	if (ret) {
-- 
2.43.0