linux-kernel - [PATCH 5.18 423/879] ASoC: samsung: Fix refcount leak in aries_audio

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Message-Id: <20220607165015.144184549@linuxfoundation.org>
Date:   Tue,  7 Jun 2022 18:59:01 +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>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 423/879] ASoC: samsung: Fix refcount leak in aries_audio_probe

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

[ Upstream commit bf4a9b2467b775717d0e9034ad916888e19713a3 ]

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
If extcon_find_edev_by_node() fails, it doesn't call of_node_put()
Calling of_node_put() after extcon_find_edev_by_node() to fix this.

Fixes: 7a3a7671fa6c ("ASoC: samsung: Add driver for Aries boards")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Link: https://lore.kernel.org/r/20220512043828.496-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/samsung/aries_wm8994.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/samsung/aries_wm8994.c b/sound/soc/samsung/aries_wm8994.c
index 5265e546b124..83acbe57b248 100644
--- a/sound/soc/samsung/aries_wm8994.c
+++ b/sound/soc/samsung/aries_wm8994.c
@@ -585,10 +585,10 @@ static int aries_audio_probe(struct platform_device *pdev)
 
 	extcon_np = of_parse_phandle(np, "extcon", 0);
 	priv->usb_extcon = extcon_find_edev_by_node(extcon_np);
+	of_node_put(extcon_np);
 	if (IS_ERR(priv->usb_extcon))
 		return dev_err_probe(dev, PTR_ERR(priv->usb_extcon),
 				     "Failed to get extcon device");
-	of_node_put(extcon_np);
 
 	priv->adc = devm_iio_channel_get(dev, "headset-detect");
 	if (IS_ERR(priv->adc))
-- 
2.35.1