linux-kernel - [PATCH] bus: vexpress-config: fix device node reference leak in vexpress_syscfg

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Message-Id: <20250902081929.2411971-1-linmq006@gmail.com>
Date: Tue,  2 Sep 2025 16:19:27 +0800
From: Miaoqian Lin <linmq006@...il.com>
To: Liviu Dudau <liviu.dudau@....com>,
	Sudeep Holla <sudeep.holla@....com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Miaoqian Lin <linmq006@...il.com>,
	Rob Herring <robh@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org
Subject: [PATCH] bus: vexpress-config: fix device node reference leak in vexpress_syscfg_probe

Add missing of_node_put() call to release
the device node reference obtained via of_parse_phandle().

Since we don't actually use the node, decrement the
reference count immediately after obtaining it.

Fixes: a5a38765ac79 ("bus: vexpress-config: simplify config bus probing")
Cc: stable@...r.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/bus/vexpress-config.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c
index 64ee920721ee..aa17f819dfc9 100644
--- a/drivers/bus/vexpress-config.c
+++ b/drivers/bus/vexpress-config.c
@@ -393,6 +393,7 @@ static int vexpress_syscfg_probe(struct platform_device *pdev)
 		struct device_node *bridge_np;
 
 		bridge_np = of_parse_phandle(node, "arm,vexpress,config-bridge", 0);
+		of_node_put(bridge_np);
 		if (bridge_np != pdev->dev.parent->of_node)
 			continue;
 
-- 
2.35.1