This is a note to let you know that I've just added the patch titled
net: ethernet: ti: am65-cpsw-nuss: Fix some refcount leaks
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ethernet-ti-am65-cpsw-nuss-fix-some-refcount-lea.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3edf2c3f86f0853de45f8f565124fa33783f055e
Author: Miaoqian Lin <linmq006@xxxxxxxxx>
Date: Thu May 26 12:52:08 2022 +0400
net: ethernet: ti: am65-cpsw-nuss: Fix some refcount leaks
[ 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: b1f66a5bee07 ("net: ethernet: ti: am65-cpsw-nuss: enable packet timestamping support")
Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 0805edef5625..059d68d48f1e 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -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;
