of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 00d93611f002 ("ipmi:ipmb: Add the ability to have a separate slave and master device")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/char/ipmi/ipmi_ipmb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/ipmi/ipmi_ipmb.c b/drivers/char/ipmi/ipmi_ipmb.c
index b81b862532fb..a8bfe0ade082 100644
--- a/drivers/char/ipmi/ipmi_ipmb.c
+++ b/drivers/char/ipmi/ipmi_ipmb.c
@@ -476,6 +476,7 @@ static int ipmi_ipmb_probe(struct i2c_client *client,
 	slave_np = of_parse_phandle(dev->of_node, "slave-dev", 0);
 	if (slave_np) {
 		slave_adap = of_get_i2c_adapter_by_node(slave_np);
+		of_node_put(slave_np);
 		if (!slave_adap) {
 			dev_notice(&client->dev,
 				   "Could not find slave adapter\n");
-- 
2.25.1

On Thu, May 12, 2022 at 08:44:45AM +0400, Miaoqian Lin wrote:
> of_parse_phandle() returns a node pointer with refcount
> incremented, we should use of_node_put() on it when done.
> Add missing of_node_put() to avoid refcount leak.

Thanks, applied and backport requested for 5.17.

-corey

> 
> Fixes: 00d93611f002 ("ipmi:ipmb: Add the ability to have a separate slave and master device")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> ---
>  drivers/char/ipmi/ipmi_ipmb.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/char/ipmi/ipmi_ipmb.c b/drivers/char/ipmi/ipmi_ipmb.c
> index b81b862532fb..a8bfe0ade082 100644
> --- a/drivers/char/ipmi/ipmi_ipmb.c
> +++ b/drivers/char/ipmi/ipmi_ipmb.c
> @@ -476,6 +476,7 @@ static int ipmi_ipmb_probe(struct i2c_client *client,
>  	slave_np = of_parse_phandle(dev->of_node, "slave-dev", 0);
>  	if (slave_np) {
>  		slave_adap = of_get_i2c_adapter_by_node(slave_np);
> +		of_node_put(slave_np);
>  		if (!slave_adap) {
>  			dev_notice(&client->dev,
>  				   "Could not find slave adapter\n");
> -- 
> 2.25.1
>