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stmmac: dwmac-loongson: fix missing of_node_put() while module exiting

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The node returned by of_get_child_by_name() with refcount decremented,
of_node_put() needs be called when finish using it. So add it in the
error path in loongson_dwmac_probe() and in loongson_dwmac_remove().

Fixes: 2ae34111fe ("stmmac: dwmac-loongson: fix invalid mdio_node")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Yang Yingliang 2022-11-08 19:46:47 +08:00 committed by Paolo Abeni
parent fe5b3ce8b4
commit 7f94d0498f
1 changed files with 14 additions and 5 deletions
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19
drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
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@ -75,20 +75,24 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
sizeof(*plat->mdio_bus_data),
GFP_KERNEL);
if (!plat->mdio_bus_data)
return -ENOMEM;
if (!plat->mdio_bus_data) {
ret = -ENOMEM;
goto err_put_node;
}
plat->mdio_bus_data->needs_reset = true;
}
plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg), GFP_KERNEL);
if (!plat->dma_cfg)
return -ENOMEM;
if (!plat->dma_cfg) {
ret = -ENOMEM;
goto err_put_node;
}
/* Enable pci device */
ret = pci_enable_device(pdev);
if (ret) {
dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n", __func__);
return ret;
goto err_put_node;
}
/* Get the base address of device */
@ -152,13 +156,18 @@ err_disable_msi:
pci_disable_msi(pdev);
err_disable_device:
pci_disable_device(pdev);
err_put_node:
of_node_put(plat->mdio_node);
return ret;
}
static void loongson_dwmac_remove(struct pci_dev *pdev)
{
struct net_device *ndev = dev_get_drvdata(&pdev->dev);
struct stmmac_priv *priv = netdev_priv(ndev);
int i;
of_node_put(priv->plat->mdio_node);
stmmac_dvr_remove(&pdev->dev);
for (i = 0; i < PCI_STD_NUM_BARS; i++) {