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authorMiaoqian Lin <linmq006@gmail.com>2022-06-07 08:11:43 +0400
committerJakub Kicinski <kuba@kernel.org>2022-06-08 20:52:41 -0700
commit11ec18b1d8d92b9df307d31950dcba0b3dd7283c (patch)
tree83baef0e91584f4680fbea5ade26259b4f6b34e8 /drivers/net/ethernet
parent2061ecfdf2350994e5b61c43e50e98a7a70e95ee (diff)
downloadlinux-11ec18b1d8d92b9df307d31950dcba0b3dd7283c.tar.gz
net: altera: Fix refcount leak in altera_tse_mdio_create
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>
Diffstat (limited to 'drivers/net/ethernet')
-rw-r--r--drivers/net/ethernet/altera/altera_tse_main.c6
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 a3816264c35c..8c5828582c21 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -163,7 +163,8 @@ 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;
@@ -180,6 +181,7 @@ 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);
@@ -189,6 +191,8 @@ 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;
}