netdev - [PATCH net] net: rswitch: Fix error path in rswitch_start

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Date: Tue, 21 Nov 2023 14:52:55 +0900
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To: s.shtylyov@....ru,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: netdev@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: [PATCH net] net: rswitch: Fix error path in rswitch_start_xmit()

This .ndo_start_xmit() function should return netdev_tx_t value,
not -ENOMEM. Also, before returning the function, dev_kfree_skb_any()
should be called. So, fix them.

Fixes: 33f5d733b589 ("net: renesas: rswitch: Improve TX timestamp accuracy")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
---
 drivers/net/ethernet/renesas/rswitch.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index 43a7795d6591..fc9dcf5fa166 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c
@@ -1535,7 +1535,8 @@ static netdev_tx_t rswitch_start_xmit(struct sk_buff *skb, struct net_device *nd
 		ts_info = kzalloc(sizeof(*ts_info), GFP_ATOMIC);
 		if (!ts_info) {
 			dma_unmap_single(ndev->dev.parent, dma_addr, skb->len, DMA_TO_DEVICE);
-			return -ENOMEM;
+			dev_kfree_skb_any(skb);
+			return ret;
 		}
 
 		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-- 
2.25.1