From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
_of_phy_get() will directly return when suffers of_device_is_compatible()
error, but it forgets to decrease refcount of OF node @args.np before error
return, the refcount was increased by previous of_parse_phandle_with_args()
so causes the OF node's refcount leakage.
Fix by decreasing the refcount via of_node_put() before the error return.
Fixes: b7563e2796f8 ("phy: work around 'phys' references to usb-nop-xceiv devices")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
---
drivers/phy/phy-core.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 52ca590a58b9..3127c5d9c637 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -624,13 +624,15 @@ static struct phy *_of_phy_get(struct device_node *np, int index)
struct of_phandle_args args;
ret = of_parse_phandle_with_args(np, "phys", "#phy-cells",
- index, &args);
+ index, &args);
if (ret)
return ERR_PTR(-ENODEV);
/* This phy type handled by the usb-phy subsystem for now */
- if (of_device_is_compatible(args.np, "usb-nop-xceiv"))
- return ERR_PTR(-ENODEV);
+ if (of_device_is_compatible(args.np, "usb-nop-xceiv")) {
+ phy = ERR_PTR(-ENODEV);
+ goto out_put_node;
+ }
mutex_lock(&phy_provider_mutex);
phy_provider = of_phy_provider_lookup(args.np);
@@ -652,6 +654,7 @@ static struct phy *_of_phy_get(struct device_node *np, int index)
out_unlock:
mutex_unlock(&phy_provider_mutex);
+out_put_node:
of_node_put(args.np);
return phy;
--
2.34.1
