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From: Miaoqian Lin <linmq006@gmail.com>
To: Nicolas Ferre <nicolas.ferre@microchip.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Claudiu Beznea <claudiu.beznea@microchip.com>,
	Mihai Sain <mihai.sain@microchip.com>,
	Miaoqian Lin <linmq006@gmail.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] drivers: soc: atmel: Fix refcount leak in atmel_soc_device_init
Date: Sun,  5 Jun 2022 12:40:32 +0400	[thread overview]
Message-ID: <20220605084035.27127-1-linmq006@gmail.com> (raw)

of_find_node_by_path() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: 960ddf70cc11 ("drivers: soc: atmel: Avoid calling at91_soc_init on non AT91 SoCs")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/soc/atmel/soc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/atmel/soc.c b/drivers/soc/atmel/soc.c
index b2d365ae0282..46dfa24c52fb 100644
--- a/drivers/soc/atmel/soc.c
+++ b/drivers/soc/atmel/soc.c
@@ -369,10 +369,13 @@ static int __init atmel_soc_device_init(void)
 {
 	struct device_node *np = of_find_node_by_path("/");
 
-	if (!of_match_node(at91_soc_allowed_list, np))
+	if (!of_match_node(at91_soc_allowed_list, np)) {
+		of_node_put(np);
 		return 0;
+	}
 
 	at91_soc_init(socs);
+	of_node_put(np);
 
 	return 0;
 }
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Nicolas Ferre <nicolas.ferre@microchip.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Claudiu Beznea <claudiu.beznea@microchip.com>,
	Mihai Sain <mihai.sain@microchip.com>,
	Miaoqian Lin <linmq006@gmail.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] drivers: soc: atmel: Fix refcount leak in atmel_soc_device_init
Date: Sun,  5 Jun 2022 12:40:32 +0400	[thread overview]
Message-ID: <20220605084035.27127-1-linmq006@gmail.com> (raw)

of_find_node_by_path() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: 960ddf70cc11 ("drivers: soc: atmel: Avoid calling at91_soc_init on non AT91 SoCs")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/soc/atmel/soc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/atmel/soc.c b/drivers/soc/atmel/soc.c
index b2d365ae0282..46dfa24c52fb 100644
--- a/drivers/soc/atmel/soc.c
+++ b/drivers/soc/atmel/soc.c
@@ -369,10 +369,13 @@ static int __init atmel_soc_device_init(void)
 {
 	struct device_node *np = of_find_node_by_path("/");
 
-	if (!of_match_node(at91_soc_allowed_list, np))
+	if (!of_match_node(at91_soc_allowed_list, np)) {
+		of_node_put(np);
 		return 0;
+	}
 
 	at91_soc_init(socs);
+	of_node_put(np);
 
 	return 0;
 }
-- 
2.25.1


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             reply	other threads:[~2022-06-05  8:40 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-05  8:40 Miaoqian Lin [this message]
2022-06-05  8:40 ` [PATCH] drivers: soc: atmel: Fix refcount leak in atmel_soc_device_init Miaoqian Lin
2022-06-06  9:00 ` Claudiu.Beznea
2022-06-06  9:00   ` Claudiu.Beznea
2022-06-06  9:22   ` Sudeep Holla
2022-06-06  9:22     ` Sudeep Holla

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