[PATCH 1/1] net: allwinner: remove dmaengine_desc_free()

[Frank . Li]

From: Frank Li <Frank.Li@xxxxxxx>

dmaengine_desc_free() is designed for DMA_CTRL_REUSE. If DMA_CTRL_REUSE
is not set, dmaengine_desc_free() will return -EPERM.

	if (!dmaengine_desc_test_reuse(desc))
		return -EPERM;

So calling dmaengine_desc_free() does nothing.
dmaengine_terminate_(a)sync() will free all already allocated descriptors.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
 drivers/net/ethernet/allwinner/sun4i-emac.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/allwinner/sun4i-emac.c b/drivers/net/ethernet/allwinner/sun4i-emac.c
index 0ba67a55705d6..09b2abdfc9e84 100644
--- a/drivers/net/ethernet/allwinner/sun4i-emac.c
+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
@@ -300,7 +300,7 @@ static int emac_dma_inblk_32bit(struct emac_board_info *db,
 	if (!req) {
 		dev_err(db->dev, "alloc emac dma req error.\n");
 		ret = -ENOMEM;
-		goto alloc_req_err;
+		goto prepare_err;
 	}
 
 	desc->callback_param = req;
@@ -319,9 +319,6 @@ static int emac_dma_inblk_32bit(struct emac_board_info *db,
 submit_err:
 	emac_free_dma_req(req);
 
-alloc_req_err:
-	dmaengine_desc_free(desc);
-
 prepare_err:
 	dma_unmap_single(db->dev, rxbuf, count, DMA_FROM_DEVICE);
 	return ret;
-- 
2.43.0