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| author | Miaoqian Lin <linmq006@gmail.com> | 2022-06-07 08:11:43 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-14 16:59:36 +0200 |
| commit | 5cd0e22fa11f4a21a8c09cc258f20b1474c95801 (patch) | |
| tree | fff6c1ca00601ebdd026bb5164d655346697f87c | |
| parent | 7596bd7920985f7fc8579a92e48bc53ce4475b21 (diff) | |
| download | linux-stable-5cd0e22fa11f4a21a8c09cc258f20b1474c95801.tar.gz linux-stable-5cd0e22fa11f4a21a8c09cc258f20b1474c95801.tar.bz2 linux-stable-5cd0e22fa11f4a21a8c09cc258f20b1474c95801.zip | |
net: altera: Fix refcount leak in altera_tse_mdio_create
[ Upstream commit 11ec18b1d8d92b9df307d31950dcba0b3dd7283c ]
Every iteration of for_each_child_of_node() decrements
the reference count of the previous node.
When break from a for_each_child_of_node() loop,
we need to explicitly call of_node_put() on the child node when
not need anymore.
Add missing of_node_put() to avoid refcount leak.
Fixes: bbd2190ce96d ("Altera TSE: Add main and header file for Altera Ethernet Driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220607041144.7553-1-linmq006@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/altera/altera_tse_main.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index 1b4dfd357383..1b9fb78ef824 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -174,7 +174,8 @@ static int altera_tse_mdio_create(struct net_device *dev, unsigned int id) mdio = mdiobus_alloc(); if (mdio == NULL) { netdev_err(dev, "Error allocating MDIO bus\n"); - return -ENOMEM; + ret = -ENOMEM; + goto put_node; } mdio->name = ALTERA_TSE_RESOURCE_NAME; @@ -191,6 +192,7 @@ static int altera_tse_mdio_create(struct net_device *dev, unsigned int id) mdio->id); goto out_free_mdio; } + of_node_put(mdio_node); if (netif_msg_drv(priv)) netdev_info(dev, "MDIO bus %s: created\n", mdio->id); @@ -200,6 +202,8 @@ static int altera_tse_mdio_create(struct net_device *dev, unsigned int id) out_free_mdio: mdiobus_free(mdio); mdio = NULL; +put_node: + of_node_put(mdio_node); return ret; } |