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phy: mt65xx-usb3: add missing of_node_put

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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>
This commit is contained in:
Julia Lawall 2015-11-16 12:33:15 +01:00 committed by Kishon Vijay Abraham I
parent 0b25ff8697
commit 2bb80ccda1
1 changed files with 13 additions and 7 deletions
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20
drivers/phy/phy-mt65xx-usb3.c
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@ -415,7 +415,7 @@ static int mt65xx_u3phy_probe(struct platform_device *pdev)
struct resource *sif_res;
struct mt65xx_u3phy *u3phy;
struct resource res;
int port;
int port, retval;
u3phy = devm_kzalloc(dev, sizeof(*u3phy), GFP_KERNEL);
if (!u3phy)
@ -447,31 +447,34 @@ static int mt65xx_u3phy_probe(struct platform_device *pdev)
for_each_child_of_node(np, child_np) {
struct mt65xx_phy_instance *instance;
struct phy *phy;
int retval;
instance = devm_kzalloc(dev, sizeof(*instance), GFP_KERNEL);
if (!instance)
return -ENOMEM;
if (!instance) {
retval = -ENOMEM;
goto put_child;
}
u3phy->phys[port] = instance;
phy = devm_phy_create(dev, child_np, &mt65xx_u3phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create phy\n");
return PTR_ERR(phy);
retval = PTR_ERR(phy);
goto put_child;
}
retval = of_address_to_resource(child_np, 0, &res);
if (retval) {
dev_err(dev, "failed to get address resource(id-%d)\n",
port);
return retval;
goto put_child;
}
instance->port_base = devm_ioremap_resource(&phy->dev, &res);
if (IS_ERR(instance->port_base)) {
dev_err(dev, "failed to remap phy regs\n");
return PTR_ERR(instance->port_base);
retval = PTR_ERR(instance->port_base);
goto put_child;
}
instance->phy = phy;
@ -483,6 +486,9 @@ static int mt65xx_u3phy_probe(struct platform_device *pdev)
provider = devm_of_phy_provider_register(dev, mt65xx_phy_xlate);
return PTR_ERR_OR_ZERO(provider);
put_child:
of_node_put(child_np);
return retval;
}
static const struct of_device_id mt65xx_u3phy_id_table[] = {