[PATCH 7/9] phy: miphy365x: add missing of_node_put

Kishon Vijay Abraham I
2015-12-07T13:51:25Z

for_each_child_of_node performs an of_node_get on each iteration,
so a return from the middle of the loop requires an of_node_put.

A simplified version of the semantic patch that finds this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
@@

for_each_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
* return ...;
)
...
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/phy/phy-miphy365x.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
index 00a686a..e661f3b 100644
--- a/drivers/phy/phy-miphy365x.c
+++ b/drivers/phy/phy-miphy365x.c
@@ -566,22 +566,25 @@ static int miphy365x_probe(struct platform_device *pdev)

miphy_phy = devm_kzalloc(&pdev->dev, sizeof(*miphy_phy),
GFP_KERNEL);
- if (!miphy_phy)
- return -ENOMEM;
+ if (!miphy_phy) {
+ ret = -ENOMEM;
+ goto put_child;
+ }

miphy_dev->phys[port] = miphy_phy;

phy = devm_phy_create(&pdev->dev, child, &miphy365x_ops);
if (IS_ERR(phy)) {
dev_err(&pdev->dev, "failed to create PHY\n");
- return PTR_ERR(phy);
+ ret = PTR_ERR(phy);
+ goto put_child;
}

miphy_dev->phys[port]->phy = phy;

ret = miphy365x_of_probe(child, miphy_phy);
if (ret)
- return ret;
+ goto put_child;

phy_set_drvdata(phy, miphy_dev->phys[port]);

@@ -591,12 +594,15 @@ static int miphy365x_probe(struct platform_device *pdev)
&miphy_phy->ctrlreg);
if (ret) {
dev_err(&pdev->dev, "No sysconfig offset found\n");
- return ret;
+ goto put_child;
}
}

provider = devm_of_phy_provider_register(&pdev->dev, miphy365x_xlate);
return PTR_ERR_OR_ZERO(provider);
+put_child:
+ of_node_put(child);
+ return ret;
}

static const struct of_device_id miphy365x_of_match[] = {
--
1.7.9.5