The of_find_compatible_node() function returns a node pointer with
refcount incremented, We should use of_node_put() on it when done
Add the missing of_node_put() to release the refcount.

Fixes: 7349a74ea75c ("net: ethernet: gianfar_ethtool: get phc index through drvdata")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
---
changes in v2:
- Fix the subject
---
 drivers/net/ethernet/freescale/gianfar_ethtool.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/freescale/gianfar_ethtool.c b/drivers/net/ethernet/freescale/gianfar_ethtool.c
index ff756265d58f..9a2c16d69e2c 100644
--- a/drivers/net/ethernet/freescale/gianfar_ethtool.c
+++ b/drivers/net/ethernet/freescale/gianfar_ethtool.c
@@ -1464,6 +1464,7 @@ static int gfar_get_ts_info(struct net_device *dev,
 	ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
 	if (ptp_node) {
 		ptp_dev = of_find_device_by_node(ptp_node);
+		of_node_put(ptp_node);
 		if (ptp_dev)
 			ptp = platform_get_drvdata(ptp_dev);
 	}
-- 
2.17.1

> -----Original Message-----
> From: Miaoqian Lin <linmq006@gmail.com>
> Sent: Thursday, March 10, 2022 3:53 AM
> To: Claudiu Manoil <claudiu.manoil@nxp.com>; David S. Miller
> <davem@davemloft.net>; Jakub Kicinski <kuba@kernel.org>; Y.B. Lu
> <yangbo.lu@nxp.com>; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Cc: linmq006@gmail.com
> Subject: [PATCH net v2] gianfar: ethtool: Fix refcount leak in gfar_get_ts_info
> 
> The of_find_compatible_node() function returns a node pointer with
> refcount incremented, We should use of_node_put() on it when done
> Add the missing of_node_put() to release the refcount.
> 
> Fixes: 7349a74ea75c ("net: ethernet: gianfar_ethtool: get phc index through
> drvdata")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
> ---
> changes in v2:
> - Fix the subject
> ---

Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Thu, 10 Mar 2022 01:53:13 +0000 you wrote:
> The of_find_compatible_node() function returns a node pointer with
> refcount incremented, We should use of_node_put() on it when done
> Add the missing of_node_put() to release the refcount.
> 
> Fixes: 7349a74ea75c ("net: ethernet: gianfar_ethtool: get phc index through drvdata")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
> 
> [...]

Here is the summary with links:
  - [net,v2] gianfar: ethtool: Fix refcount leak in gfar_get_ts_info
    https://git.kernel.org/netdev/net/c/2ac5b58e645c

You are awesome, thank you!
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