linux-kernel - [PATCH] input/serio: Fix refcount leak bug in i8042-sparcio

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Message-Id: <20220619073036.4067872-1-windhl@126.com>
Date:   Sun, 19 Jun 2022 15:30:36 +0800
From:   Liang He <windhl@....com>
To:     dmitry.torokhov@...il.com
Cc:     windhl@....com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] input/serio: Fix refcount leak bug in i8042-sparcio

In i8042_platform_init() and i8042_platform_exit(), we need call
of_node_put() to keep refcount balance.

Signed-off-by: Liang He <windhl@....com>
---
 drivers/input/serio/i8042-sparcio.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/input/serio/i8042-sparcio.h b/drivers/input/serio/i8042-sparcio.h
index fce76812843b..a2a9db9220d7 100644
--- a/drivers/input/serio/i8042-sparcio.h
+++ b/drivers/input/serio/i8042-sparcio.h
@@ -108,6 +108,8 @@ static int __init i8042_platform_init(void)
 	struct device_node *root = of_find_node_by_path("/");
 	const char *name = of_get_property(root, "name", NULL);
 
+	of_node_put(root);
+
 	if (name && !strcmp(name, "SUNW,JavaStation-1")) {
 		/* Hardcoded values for MrCoffee.  */
 		i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
@@ -139,6 +141,8 @@ static inline void i8042_platform_exit(void)
 	struct device_node *root = of_find_node_by_path("/");
 	const char *name = of_get_property(root, "name", NULL);
 
+	of_node_put(root);
+
 	if (!name || strcmp(name, "SUNW,JavaStation-1"))
 		platform_driver_unregister(&sparc_i8042_driver);
 }
-- 
2.25.1