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net: hns: set correct return value 

The function of_parse_phandle() returns a NULL pointer if it cannot
resolve a phandle property to a device_node pointer. In function
hns_nic_dev_probe(), its return value is passed to PTR_ERR to extract
the error code. However, in this case, the extracted error code will
always be zero, which is unexpected.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pan Bian 2017-10-30 16:50:01 +08:00 committed by David S. Miller
parent 7db8874abd
commit d2083d0e92
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/hisilicon/hns/hns_enet.c
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@ -2369,8 +2369,8 @@ static int hns_nic_dev_probe(struct platform_device *pdev)
priv->enet_ver = AE_VERSION_2;
ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
if (IS_ERR_OR_NULL(ae_node)) {
ret = PTR_ERR(ae_node);
if (!ae_node) {
ret = -ENODEV;
dev_err(dev, "not find ae-handle\n");
goto out_read_prop_fail;
}