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i2c: fix leaked device refcount on of_find_i2c_* error path
If of_find_i2c_device_by_node() or of_find_i2c_adapter_by_node() find a device by node, but its type does not match, a reference to that device is still held. This change fixes the problem. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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@ -1340,13 +1340,17 @@ static int of_dev_node_match(struct device *dev, void *data)
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struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
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{
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struct device *dev;
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struct i2c_client *client;
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dev = bus_find_device(&i2c_bus_type, NULL, node,
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of_dev_node_match);
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dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
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if (!dev)
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return NULL;
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return i2c_verify_client(dev);
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client = i2c_verify_client(dev);
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if (!client)
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put_device(dev);
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return client;
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}
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EXPORT_SYMBOL(of_find_i2c_device_by_node);
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@ -1354,13 +1358,17 @@ EXPORT_SYMBOL(of_find_i2c_device_by_node);
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struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node)
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{
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struct device *dev;
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struct i2c_adapter *adapter;
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dev = bus_find_device(&i2c_bus_type, NULL, node,
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of_dev_node_match);
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dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
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if (!dev)
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return NULL;
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return i2c_verify_adapter(dev);
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adapter = i2c_verify_adapter(dev);
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if (!adapter)
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put_device(dev);
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return adapter;
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}
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EXPORT_SYMBOL(of_find_i2c_adapter_by_node);
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#else
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