linux-kernel - [PATCH] pinctrl: pinconf-generic: add missing of_node_put() in pinconf_generic_dt_node_to

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Message-ID: <20221125070156.3535855-1-zhangpeng362@huawei.com>
Date:   Fri, 25 Nov 2022 07:01:56 +0000
From:   Peng Zhang <zhangpeng362@...wei.com>
To:     <linus.walleij@...aro.org>, <baruch@...s.co.il>,
        <ldewangan@...dia.com>
CC:     <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <sunnanyong@...wei.com>, <wangkefeng.wang@...wei.com>,
        ZhangPeng <zhangpeng362@...wei.com>
Subject: [PATCH] pinctrl: pinconf-generic: add missing of_node_put() in pinconf_generic_dt_node_to_map()

From: ZhangPeng <zhangpeng362@...wei.com>

of_node_put() needs to be called when jumping out of the loop, since
for_each_available_child_of_node() will increase the refcount of node.

Fixes: c7289500e29d ("pinctrl: pinconf-generic: scan also referenced phandle node")
Signed-off-by: ZhangPeng <zhangpeng362@...wei.com>
---
 drivers/pinctrl/pinconf-generic.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
index 415d1df8f46a..365c4b0ca465 100644
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -395,8 +395,10 @@ int pinconf_generic_dt_node_to_map(struct pinctrl_dev *pctldev,
 	for_each_available_child_of_node(np_config, np) {
 		ret = pinconf_generic_dt_subnode_to_map(pctldev, np, map,
 					&reserved_maps, num_maps, type);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(np);
 			goto exit;
+		}
 	}
 	return 0;
 
-- 
2.25.1