linux-kernel - [PATCH] xtfpga: Fix refcount leak bug in setup

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Message-Id: <20220617115323.4046905-1-windhl@126.com>
Date:   Fri, 17 Jun 2022 19:53:23 +0800
From:   Liang He <windhl@....com>
To:     chris@...kel.net, jcmvbkbc@...il.com, linux@...ck-us.net
Cc:     windhl@....com, linux-xtensa@...ux-xtensa.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] xtfpga: Fix refcount leak bug in setup

In machine_setup(), 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/xtensa/platforms/xtfpga/setup.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/xtensa/platforms/xtfpga/setup.c b/arch/xtensa/platforms/xtfpga/setup.c
index 538e6748e85a..c79c1d09ea86 100644
--- a/arch/xtensa/platforms/xtfpga/setup.c
+++ b/arch/xtensa/platforms/xtfpga/setup.c
@@ -133,6 +133,7 @@ static int __init machine_setup(void)
 
 	if ((eth = of_find_compatible_node(eth, NULL, "opencores,ethoc")))
 		update_local_mac(eth);
+	of_node_put(eth);
 	return 0;
 }
 arch_initcall(machine_setup);
-- 
2.25.1