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net: ethernet: ti: am65-cpsw-nuss: Fix some refcount leaks

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[ Upstream commit 5dd89d2fc438457811cbbec07999ce0d80051ff5 ]

of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
am65_cpsw_init_cpts() and am65_cpsw_nuss_probe() don't release
the refcount in error case.
Add missing of_node_put() to avoid refcount leak.

Fixes: b1f66a5bee ("net: ethernet: ti: am65-cpsw-nuss: enable packet timestamping support")
Fixes: 93a7653031 ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Miaoqian Lin 2022-05-26 12:52:08 +04:00 committed by Greg Kroah-Hartman
parent 71ae30662e
commit f7ba2cc57f
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/ti/am65-cpsw-nuss.c
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@ -1716,6 +1716,7 @@ static int am65_cpsw_init_cpts(struct am65_cpsw_common *common)
if (IS_ERR(cpts)) {
int ret = PTR_ERR(cpts);
of_node_put(node);
if (ret == -EOPNOTSUPP) {
dev_info(dev, "cpts disabled\n");
return 0;
@ -2064,9 +2065,9 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
if (!node)
return -ENOENT;
common->port_num = of_get_child_count(node);
of_node_put(node);
if (common->port_num < 1 || common->port_num > AM65_CPSW_MAX_PORTS)
return -ENOENT;
of_node_put(node);
if (common->port_num != 1)
return -EOPNOTSUPP;