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path: root/drivers/net/can/usb
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Diffstat (limited to 'drivers/net/can/usb')
-rw-r--r--drivers/net/can/usb/kvaser_usb.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
index 541fb7a05625..2e7d513a7c11 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -1294,12 +1294,14 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
1294 if (!urb) { 1294 if (!urb) {
1295 netdev_err(netdev, "No memory left for URBs\n"); 1295 netdev_err(netdev, "No memory left for URBs\n");
1296 stats->tx_dropped++; 1296 stats->tx_dropped++;
1297 goto nourbmem; 1297 dev_kfree_skb(skb);
1298 return NETDEV_TX_OK;
1298 } 1299 }
1299 1300
1300 buf = kmalloc(sizeof(struct kvaser_msg), GFP_ATOMIC); 1301 buf = kmalloc(sizeof(struct kvaser_msg), GFP_ATOMIC);
1301 if (!buf) { 1302 if (!buf) {
1302 stats->tx_dropped++; 1303 stats->tx_dropped++;
1304 dev_kfree_skb(skb);
1303 goto nobufmem; 1305 goto nobufmem;
1304 } 1306 }
1305 1307
@@ -1334,6 +1336,7 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
1334 } 1336 }
1335 } 1337 }
1336 1338
1339 /* This should never happen; it implies a flow control bug */
1337 if (!context) { 1340 if (!context) {
1338 netdev_warn(netdev, "cannot find free context\n"); 1341 netdev_warn(netdev, "cannot find free context\n");
1339 ret = NETDEV_TX_BUSY; 1342 ret = NETDEV_TX_BUSY;
@@ -1364,9 +1367,6 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
1364 if (unlikely(err)) { 1367 if (unlikely(err)) {
1365 can_free_echo_skb(netdev, context->echo_index); 1368 can_free_echo_skb(netdev, context->echo_index);
1366 1369
1367 skb = NULL; /* set to NULL to avoid double free in
1368 * dev_kfree_skb(skb) */
1369
1370 atomic_dec(&priv->active_tx_urbs); 1370 atomic_dec(&priv->active_tx_urbs);
1371 usb_unanchor_urb(urb); 1371 usb_unanchor_urb(urb);
1372 1372
@@ -1388,8 +1388,6 @@ releasebuf:
1388 kfree(buf); 1388 kfree(buf);
1389nobufmem: 1389nobufmem:
1390 usb_free_urb(urb); 1390 usb_free_urb(urb);
1391nourbmem:
1392 dev_kfree_skb(skb);
1393 return ret; 1391 return ret;
1394} 1392}
1395 1393