linux-kernel - [PATCH v2] net: korina: fix return value

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Date:   Mon, 14 Dec 2020 23:09:52 +0100
From:   Vincent Stehlé <vincent.stehle@...oste.net>
To:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Julian Wiedmann <jwi@...ux.ibm.com>,
        Vincent Stehlé <vincent.stehle@...oste.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Florian Fainelli <florian.fainelli@...ecomint.eu>
Subject: [PATCH v2] net: korina: fix return value

The ndo_start_xmit() method must not attempt to free the skb to transmit
when returning NETDEV_TX_BUSY. Therefore, make sure the
korina_send_packet() function returns NETDEV_TX_OK when it frees a packet.

Fixes: ef11291bcd5f ("Add support the Korina (IDT RC32434) Ethernet MAC")
Suggested-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
Cc: David S. Miller <davem@...emloft.net>
Cc: Florian Fainelli <florian.fainelli@...ecomint.eu>
---


Changes since v1:
- Keep freeing the packet but return NETDEV_TX_OK, as suggested by Jakub


 drivers/net/ethernet/korina.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c
index bf48f0ded9c7d..925161959b9ba 100644
--- a/drivers/net/ethernet/korina.c
+++ b/drivers/net/ethernet/korina.c
@@ -219,7 +219,7 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
 			dev_kfree_skb_any(skb);
 			spin_unlock_irqrestore(&lp->lock, flags);
 
-			return NETDEV_TX_BUSY;
+			return NETDEV_TX_OK;
 		}
 	}
 
-- 
2.29.2