linux-kernel - [PATCH v2] powerpc/85xx: Fix reference leak in xes_mpc85xx_setup

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Message-Id: <20220603121752.23548-1-linmq006@gmail.com>
Date:   Fri,  3 Jun 2022 16:17:50 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Scott Wood <oss@...error.net>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Miaoqian Lin <linmq006@...il.com>,
        Nick Child <nick.child@....com>, Nate Case <ncase@...-inc.com>,
        Kumar Gala <galak@...nel.crashing.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] powerpc/85xx: Fix reference leak in xes_mpc85xx_setup_arch

of_find_node_by_path() returns remote device nodepointer with
refcount incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 3038acf9091f ("powerpc/85xx: Add platform support for X-ES MPC85xx boards")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
changes in v2:
- update Fixes tag.
v1 Link: https://lore.kernel.org/all/20220603120907.19999-1-linmq006@gmail.com
---
 arch/powerpc/platforms/85xx/xes_mpc85xx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
index 5836e4ecb7a0..93f67b430714 100644
--- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c
+++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
@@ -130,6 +130,8 @@ static void __init xes_mpc85xx_setup_arch(void)
 	mpc85xx_smp_init();
 
 	fsl_pci_assign_primary();
+
+	of_node_put(root);
 }
 
 machine_arch_initcall(xes_mpc8572, mpc85xx_common_publish_devices);
-- 
2.25.1