From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
[ Upstream commit 7f94d0498f9c763f37172c08059ae91804c3075a ]
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: 2ae34111fe4e ("stmmac: dwmac-loongson: fix invalid mdio_node")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
.../ethernet/stmicro/stmmac/dwmac-loongson.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index 2d480bc49c51..a25c187d3185 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -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 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
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++) {
--
2.35.1
