6.6-stable review patch. If anyone has any objections, please let me know.
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From: Javier Carrasco javier.carrasco.cruz@gmail.com
commit c68942624e254a4e8a65afcd3c17ed95acda5489 upstream.
The device_for_each_child_node() macro requires explicit calls to fwnode_handle_put() in all early exits of the loop if the child node is not required outside. Otherwise, the child node's refcount is not decremented and the resource is not released.
The current implementation of pmic_glink_ucsi_probe() makes use of the device_for_each_child_node(), but does not release the child node on early returns. Add the missing calls to fwnode_handle_put().
Cc: stable@vger.kernel.org Fixes: c6165ed2f425 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events") Signed-off-by: Javier Carrasco javier.carrasco.cruz@gmail.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com Link: https://lore.kernel.org/r/20240613-ucsi-glink-release-node-v1-1-f7629a56f70a... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/ucsi/ucsi_glink.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/usb/typec/ucsi/ucsi_glink.c +++ b/drivers/usb/typec/ucsi/ucsi_glink.c @@ -348,6 +348,7 @@ static int pmic_glink_ucsi_probe(struct ret = fwnode_property_read_u32(fwnode, "reg", &port); if (ret < 0) { dev_err(dev, "missing reg property of %pOFn\n", fwnode); + fwnode_handle_put(fwnode); return ret; }
@@ -362,9 +363,11 @@ static int pmic_glink_ucsi_probe(struct if (!desc) continue;
- if (IS_ERR(desc)) + if (IS_ERR(desc)) { + fwnode_handle_put(fwnode); return dev_err_probe(dev, PTR_ERR(desc), "unable to acquire orientation gpio\n"); + } ucsi->port_orientation[port] = desc;
ucsi->port_switch[port] = fwnode_typec_switch_get(fwnode);