linux-kernel - [PATCH] arm: mach-imx: Fix refcount leak bug in src

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Date:   Fri, 17 Jun 2022 20:12:35 +0800
From:   Liang He <windhl@....com>
To:     linux@...linux.org.uk, s.hauer@...gutronix.de,
        kernel@...gutronix.de, p.zabel@...gutronix.de, saravanak@...gle.com
Cc:     windhl@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm: mach-imx: Fix refcount leak bug in src

In imx7_src_init(), of_find_compatible_node() will return a node
pointer with refcount incremented. We should use of_node_put() when
it is not used anymore.

Signed-off-by: Liang He <windhl@....com>
---
 arch/arm/mach-imx/src.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-imx/src.c b/arch/arm/mach-imx/src.c
index 59a8e8cc4469..fff2776f9180 100644
--- a/arch/arm/mach-imx/src.c
+++ b/arch/arm/mach-imx/src.c
@@ -195,6 +195,7 @@ void __init imx7_src_init(void)
 		return;
 
 	src_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!src_base)
 		return;
 
@@ -203,6 +204,7 @@ void __init imx7_src_init(void)
 		return;
 
 	gpc_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!gpc_base)
 		return;
 }
-- 
2.25.1