linux-kernel - [PATCH 4.9 113/218] pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl

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Date:   Mon, 18 Apr 2022 14:12:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 113/218] pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit c09ac191b1f97cfa06f394dbfd7a5db07986cefc ]

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>
Link: https://lore.kernel.org/r/20220307115116.25316-1-linmq006@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 d318ca055489..6e237c46e1bd 100644
--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -1916,8 +1916,10 @@ 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,
-- 
2.34.1