diff options
| author | Zijun Hu <quic_zijuhu@quicinc.com> | 2024-12-13 20:36:44 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-12-24 19:55:37 +0530 |
| commit | 5ebdc6be16c2000e37fcb8b4072d442d268ad492 (patch) | |
| tree | 5821a13c1a8888e3a3e805bed6ddedc315697437 | |
| parent | 4dc48c88fcf82b89fdebd83a906aaa64f40fb8a9 (diff) | |
phy: core: Fix an OF node refcount leakage in _of_phy_get()
_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@vger.kernel.org
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20241213-phy_core_fix-v6-4-40ae28f5015a@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/phy/phy-core.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 52ca590a58b9..b88fbda6c046 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -629,8 +629,10 @@ static struct phy *_of_phy_get(struct device_node *np, int index) 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 @@ out_put_module: out_unlock: mutex_unlock(&phy_provider_mutex); +out_put_node: of_node_put(args.np); return phy; |