linux-kernel - [PATCH] can: ems_usb: fix a leak in ems_usb_start

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Date:	Sat,  7 Dec 2013 00:51:22 +0400
From:	Alexey Khoroshilov <khoroshilov@...ras.ru>
To:	Wolfgang Grandegger <wg@...ndegger.com>
Cc:	Alexey Khoroshilov <khoroshilov@...ras.ru>,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	linux-can@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] can: ems_usb: fix a leak in ems_usb_start_xmit()

There is spare code with obvious misprint in ems_usb_start_xmit():
usb_free_urb() should be used to deallocate urb instead of usb_unanchor_urb().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
---
 drivers/net/can/usb/ems_usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 5f9a7ad9b964..beae1ec255f4 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -798,7 +798,7 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne
 	 * allowed (MAX_TX_URBS).
 	 */
 	if (!context) {
-		usb_unanchor_urb(urb);
+		usb_free_urb(urb);
 		usb_free_coherent(dev->udev, size, buf, urb->transfer_dma);
 
 		netdev_warn(netdev, "couldn't find free context\n");
-- 
1.8.3.2

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