linux-kernel - [PATCH] pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl

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Message-Id: <20220307115116.25316-1-linmq006@gmail.com>
Date:   Mon,  7 Mar 2022 11:51:16 +0000
From:   Miaoqian Lin <linmq006@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Lee Jones <lee.jones@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe

This node pointer is returned by of_parse_phandle() with refcount
incremented in this function. Calling of_node_put() to avoid
the refcount leak.

Fixes: 32e67eee670e ("pinctrl: nomadik: Allow prcm_base to be extracted from Device Tree")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/pinctrl/nomadik/pinctrl-nomadik.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
index 39828e9c3120..4757bf964d3c 100644
--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -1883,8 +1883,10 @@ static int nmk_pinctrl_probe(struct platform_device *pdev)
 	}
 
 	prcm_np = of_parse_phandle(np, "prcm", 0);
-	if (prcm_np)
+	if (prcm_np) {
 		npct->prcm_base = of_iomap(prcm_np, 0);
+		of_node_put(prcm_np);
+	}
 	if (!npct->prcm_base) {
 		if (version == PINCTRL_NMK_STN8815) {
 			dev_info(&pdev->dev,
-- 
2.17.1