5.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@xxxxxxxxxx>
commit c8cbcb0d8bd72d44fad1a5ddc348ac10e0fb1b37 upstream.
Use the new of_get_compatible_child() helper to look up child nodes to
avoid ever matching non-child nodes elsewhere in the tree.
Also fix up the related struct device_node leaks.
Fixes: 14fceff4771e ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 4.20
Cc: Hauke Mehrtens <hauke@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Acked-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/dsa/lantiq_gswip.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1069,10 +1069,10 @@ static int gswip_probe(struct platform_d
version = gswip_switch_r(priv, GSWIP_VERSION);
/* bring up the mdio bus */
- gphy_fw_np = of_find_compatible_node(pdev->dev.of_node, NULL,
- "lantiq,gphy-fw");
+ gphy_fw_np = of_get_compatible_child(dev->of_node, "lantiq,gphy-fw");
if (gphy_fw_np) {
err = gswip_gphy_fw_list(priv, gphy_fw_np, version);
+ of_node_put(gphy_fw_np);
if (err) {
dev_err(dev, "gphy fw probe failed\n");
return err;
@@ -1080,13 +1080,12 @@ static int gswip_probe(struct platform_d
}
/* bring up the mdio bus */
- mdio_np = of_find_compatible_node(pdev->dev.of_node, NULL,
- "lantiq,xrx200-mdio");
+ mdio_np = of_get_compatible_child(dev->of_node, "lantiq,xrx200-mdio");
if (mdio_np) {
err = gswip_mdio(priv, mdio_np);
if (err) {
dev_err(dev, "mdio probe failed\n");
- goto gphy_fw;
+ goto put_mdio_node;
}
}
@@ -1115,7 +1114,8 @@ disable_switch:
mdio_bus:
if (mdio_np)
mdiobus_unregister(priv->ds->slave_mii_bus);
-gphy_fw:
+put_mdio_node:
+ of_node_put(mdio_np);
for (i = 0; i < priv->num_gphy_fw; i++)
gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
return err;
@@ -1134,8 +1134,10 @@ static int gswip_remove(struct platform_
dsa_unregister_switch(priv->ds);
- if (priv->ds->slave_mii_bus)
+ if (priv->ds->slave_mii_bus) {
mdiobus_unregister(priv->ds->slave_mii_bus);
+ of_node_put(priv->ds->slave_mii_bus->dev.of_node);
+ }
for (i = 0; i < priv->num_gphy_fw; i++)
gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
