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From: Nishka Dasgupta <nishkadg.linux@gmail.com>
To: khilman@baylibre.com, linux-arm-kernel@lists.infradead.org,
	linux-amlogic@lists.infradead.org
Cc: Nishka Dasgupta <nishkadg.linux@gmail.com>
Subject: [PATCH] soc: amlogic: meson-gx-socinfo: Add of_node_put() before return
Date: Mon, 19 Aug 2019 12:57:06 +0530	[thread overview]
Message-ID: <20190819072706.31732-1-nishkadg.linux@gmail.com> (raw)

The variable np in function meson_gx_socinfo_init takes the return value
of of_find_compatible_node, which gets a node but does not put it. If
this node is not put it may cause a memory leak. Hence put np after its
usefulness has been exhausted.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
---
 drivers/soc/amlogic/meson-gx-socinfo.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/amlogic/meson-gx-socinfo.c b/drivers/soc/amlogic/meson-gx-socinfo.c
index bca34954518e..13695a72c695 100644
--- a/drivers/soc/amlogic/meson-gx-socinfo.c
+++ b/drivers/soc/amlogic/meson-gx-socinfo.c
@@ -138,8 +138,10 @@ static int __init meson_gx_socinfo_init(void)
 	}
 
 	/* check if chip-id is available */
-	if (!of_property_read_bool(np, "amlogic,has-chip-id"))
+	if (!of_property_read_bool(np, "amlogic,has-chip-id")) {
+		of_node_put(np);
 		return -ENODEV;
+	}
 
 	/* node should be a syscon */
 	regmap = syscon_node_to_regmap(np);
-- 
2.19.1


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

WARNING: multiple messages have this Message-ID (diff)
From: Nishka Dasgupta <nishkadg.linux@gmail.com>
To: khilman@baylibre.com, linux-arm-kernel@lists.infradead.org,
	linux-amlogic@lists.infradead.org
Cc: Nishka Dasgupta <nishkadg.linux@gmail.com>
Subject: [PATCH] soc: amlogic: meson-gx-socinfo: Add of_node_put() before return
Date: Mon, 19 Aug 2019 12:57:06 +0530	[thread overview]
Message-ID: <20190819072706.31732-1-nishkadg.linux@gmail.com> (raw)

The variable np in function meson_gx_socinfo_init takes the return value
of of_find_compatible_node, which gets a node but does not put it. If
this node is not put it may cause a memory leak. Hence put np after its
usefulness has been exhausted.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
---
 drivers/soc/amlogic/meson-gx-socinfo.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/amlogic/meson-gx-socinfo.c b/drivers/soc/amlogic/meson-gx-socinfo.c
index bca34954518e..13695a72c695 100644
--- a/drivers/soc/amlogic/meson-gx-socinfo.c
+++ b/drivers/soc/amlogic/meson-gx-socinfo.c
@@ -138,8 +138,10 @@ static int __init meson_gx_socinfo_init(void)
 	}
 
 	/* check if chip-id is available */
-	if (!of_property_read_bool(np, "amlogic,has-chip-id"))
+	if (!of_property_read_bool(np, "amlogic,has-chip-id")) {
+		of_node_put(np);
 		return -ENODEV;
+	}
 
 	/* node should be a syscon */
 	regmap = syscon_node_to_regmap(np);
-- 
2.19.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2019-08-19  7:27 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-19  7:27 Nishka Dasgupta [this message]
2019-08-19  7:27 ` [PATCH] soc: amlogic: meson-gx-socinfo: Add of_node_put() before return Nishka Dasgupta
2019-08-19  8:05 ` Neil Armstrong
2019-08-19  8:05   ` Neil Armstrong
2019-08-20 21:55   ` Kevin Hilman
2019-08-20 21:55     ` Kevin Hilman

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