netdev - [PATCH] can: usb: delete a redundant dev_kfree_skb() in ems_usb_start

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Message-Id: <20220228083639.38183-1-hbh25y@gmail.com>
Date:   Mon, 28 Feb 2022 16:36:39 +0800
From:   Hangyu Hua <hbh25y@...il.com>
To:     wg@...ndegger.com, mkl@...gutronix.de, davem@...emloft.net,
        kuba@...nel.org, stefan.maetje@....eu, mailhol.vincent@...adoo.fr,
        paskripkin@...il.com
Cc:     linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Hangyu Hua <hbh25y@...il.com>
Subject: [PATCH] can: usb: delete a redundant dev_kfree_skb() in ems_usb_start_xmit()

There is no need to call dev_kfree_skb when usb_submit_urb fails beacause
can_put_echo_skb deletes original skb and can_free_echo_skb deletes the cloned
skb.

Signed-off-by: Hangyu Hua <hbh25y@...il.com>
---
 drivers/net/can/usb/ems_usb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 7bedceffdfa3..bbec3311d893 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -819,7 +819,6 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne
 
 		usb_unanchor_urb(urb);
 		usb_free_coherent(dev->udev, size, buf, urb->transfer_dma);
-		dev_kfree_skb(skb);
 
 		atomic_dec(&dev->active_tx_urbs);
 
-- 
2.25.1