[PATCH v3 5/9] media: renesas: rcar_drif: 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/platform/renesas/rcar_drif.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
index bd67e8e16f537..1e8cf71b52cae 100644
--- a/drivers/media/platform/renesas/rcar_drif.c
+++ b/drivers/media/platform/renesas/rcar_drif.c
@@ -610,8 +610,7 @@ static int rcar_drif_qbuf(struct rcar_drif *ch)
 	}
 
 	/* Submit descriptor */
-	rxd->callback = rcar_drif_dma_complete;
-	rxd->callback_param = ch;
+	dmaengine_desc_set_callback(rxd, rcar_drif_dma_complete, NULL, ch);
 	cookie = dmaengine_submit(rxd);
 	if (dma_submit_error(cookie)) {
 		rdrif_err(sdr, "ch%u: dma submit failed\n", ch->num);
-- 
2.43.0