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net: ethernet: ti: fix possible object reference leak

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The call to of_get_child_by_name returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/net/ethernet/ti/netcp_ethss.c:3661:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 3654, but without a corresponding object release within this function.
./drivers/net/ethernet/ti/netcp_ethss.c:3665:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 3654, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Wingman Kwok <w-kwok2@ti.com>
Cc: Murali Karicheri <m-karicheri2@ti.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wen Yang 2019-03-22 11:04:09 +08:00 committed by David S. Miller
parent be693df3cf
commit 75eac7b5f6
1 changed files with 6 additions and 2 deletions
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8
drivers/net/ethernet/ti/netcp_ethss.c
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@ -3657,12 +3657,16 @@ static int gbe_probe(struct netcp_device *netcp_device, struct device *dev,
ret = netcp_txpipe_init(&gbe_dev->tx_pipe, netcp_device,
gbe_dev->dma_chan_name, gbe_dev->tx_queue_id);
if (ret)
if (ret) {
of_node_put(interfaces);
return ret;
}
ret = netcp_txpipe_open(&gbe_dev->tx_pipe);
if (ret)
if (ret) {
of_node_put(interfaces);
return ret;
}
/* Create network interfaces */
INIT_LIST_HEAD(&gbe_dev->gbe_intf_head);