[PATCH 2/8] net: netcp: add missing of_node_put
From: Julia Lawall <hidden>
Date: 2015-10-25 14:09:30
Also in:
kernel-janitors, lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ local idexpression r.n; expression r,e; @@ for_each_child_of_node(r,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // </smpl> Signed-off-by: Julia Lawall <redacted> --- drivers/net/ethernet/ti/netcp_ethss.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c
index 6bff8d8..4e70e75 100644
--- a/drivers/net/ethernet/ti/netcp_ethss.c
+++ b/drivers/net/ethernet/ti/netcp_ethss.c@@ -2637,8 +2637,10 @@ static void init_secondary_ports(struct gbe_priv *gbe_dev, mac_phy_link = true; slave->open = true; - if (gbe_dev->num_slaves >= gbe_dev->max_num_slaves) + if (gbe_dev->num_slaves >= gbe_dev->max_num_slaves) { + of_node_put(port); break; + } } /* of_phy_connect() is needed only for MAC-PHY interface */
@@ -3137,8 +3139,10 @@ static int gbe_probe(struct netcp_device *netcp_device, struct device *dev, continue; } gbe_dev->num_slaves++; - if (gbe_dev->num_slaves >= gbe_dev->max_num_slaves) + if (gbe_dev->num_slaves >= gbe_dev->max_num_slaves) { + of_node_put(interface); break; + } } of_node_put(interfaces);