[PATCH v3 6/9] media: ti: j721e-csi2rx: 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/ti/j721e-csi2rx/j721e-csi2rx.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 022ea3d616c9e..998423fa2f330 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -692,8 +692,7 @@ static int ti_csi2rx_drain_dma(struct ti_csi2rx_ctx *ctx)
 		goto out;
 	}
 
-	desc->callback = ti_csi2rx_drain_callback;
-	desc->callback_param = ctx;
+	dmaengine_desc_set_callback(desc, ti_csi2rx_drain_callback, NULL, ctx);
 
 	cookie = dmaengine_submit(desc);
 	ret = dma_submit_error(cookie);
@@ -782,8 +781,7 @@ static int ti_csi2rx_start_dma(struct ti_csi2rx_ctx *ctx,
 	if (!desc)
 		return -EIO;
 
-	desc->callback = ti_csi2rx_dma_callback;
-	desc->callback_param = buf;
+	dmaengine_desc_set_callback(desc, ti_csi2rx_dma_callback, NULL, buf);
 
 	cookie = dmaengine_submit(desc);
 	ret = dma_submit_error(cookie);
-- 
2.43.0