linux-kernel - [PATCH 3/3] sparc: prom: Fix reference leak in of_console

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Message-Id: <20220607033306.688-2-linmq006@gmail.com>
Date:   Tue,  7 Jun 2022 07:32:59 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Miaoqian Lin <linmq006@...il.com>, sparclinux@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] sparc: prom: Fix reference leak in of_console_init

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: c73fcc846c91 ("[SPARC]: Fix serial console device detection.")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 arch/sparc/kernel/prom_32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sparc/kernel/prom_32.c b/arch/sparc/kernel/prom_32.c
index 3df960c137f7..7fc1c2dc31d5 100644
--- a/arch/sparc/kernel/prom_32.c
+++ b/arch/sparc/kernel/prom_32.c
@@ -295,6 +295,7 @@ void __init of_console_init(void)
 
 			dp = of_find_node_by_path("/");
 			path = of_get_property(dp, "stdout-path", NULL);
+			of_node_put(dp);
 			if (!path) {
 				prom_printf("No stdout-path in root node.\n");
 				prom_halt();
-- 
2.25.1