linux-kernel - [PATCH] ASoC: mediatek: mt8195: add missing of_node

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Date:   Tue, 28 Sep 2021 14:35:20 +0800
From:   Trevor Wu <trevor.wu@...iatek.com>
To:     <broonie@...nel.org>, <tiwai@...e.com>, <matthias.bgg@...il.com>
CC:     <trevor.wu@...iatek.com>, <alsa-devel@...a-project.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <cuibixuan@...wei.com>,
        <bicycle.tsai@...iatek.com>
Subject: [PATCH] ASoC: mediatek: mt8195: add missing of_node_put in probe

dp node and hdmi node are retrieved from of_parse_phandle(), so using
of_node_put() on them before return.

Signed-off-by: Trevor Wu <trevor.wu@...iatek.com>
---
 .../mt8195/mt8195-mt6359-rt1019-rt5682.c      | 25 +++++++++++--------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c b/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c
index a3fa8efc8f81..cb15467e5fc5 100644
--- a/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c
+++ b/sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c
@@ -995,6 +995,8 @@ static int mt8195_mt6359_rt1019_rt5682_dev_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = &mt8195_mt6359_rt1019_rt5682_soc_card;
 	struct device_node *platform_node;
+	struct device_node *dp_node;
+	struct device_node *hdmi_node;
 	struct snd_soc_dai_link *dai_link;
 	struct mt8195_mt6359_rt1019_rt5682_priv *priv = NULL;
 	int ret, i;
@@ -1013,12 +1015,12 @@ static int mt8195_mt6359_rt1019_rt5682_dev_probe(struct platform_device *pdev)
 			dai_link->platforms->of_node = platform_node;
 
 		if (strcmp(dai_link->name, "DPTX_BE") == 0) {
-			dai_link->codecs->of_node =
-				of_parse_phandle(pdev->dev.of_node,
-						 "mediatek,dptx-codec", 0);
-			if (!dai_link->codecs->of_node) {
+			dp_node = of_parse_phandle(pdev->dev.of_node,
+						   "mediatek,dptx-codec", 0);
+			if (!dp_node) {
 				dev_dbg(&pdev->dev, "No property 'dptx-codec'\n");
 			} else {
+				dai_link->codecs->of_node = dp_node;
 				dai_link->codecs->name = NULL;
 				dai_link->codecs->dai_name = "i2s-hifi";
 				dai_link->init = mt8195_dptx_codec_init;
@@ -1026,12 +1028,12 @@ static int mt8195_mt6359_rt1019_rt5682_dev_probe(struct platform_device *pdev)
 		}
 
 		if (strcmp(dai_link->name, "ETDM3_OUT_BE") == 0) {
-			dai_link->codecs->of_node =
-				of_parse_phandle(pdev->dev.of_node,
-						 "mediatek,hdmi-codec", 0);
-			if (!dai_link->codecs->of_node) {
+			hdmi_node = of_parse_phandle(pdev->dev.of_node,
+						     "mediatek,hdmi-codec", 0);
+			if (!hdmi_node) {
 				dev_dbg(&pdev->dev, "No property 'hdmi-codec'\n");
 			} else {
+				dai_link->codecs->of_node = hdmi_node;
 				dai_link->codecs->name = NULL;
 				dai_link->codecs->dai_name = "i2s-hifi";
 				dai_link->init = mt8195_hdmi_codec_init;
@@ -1041,8 +1043,8 @@ static int mt8195_mt6359_rt1019_rt5682_dev_probe(struct platform_device *pdev)
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv) {
-		of_node_put(platform_node);
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto out;
 	}
 
 	snd_soc_card_set_drvdata(card, priv);
@@ -1052,6 +1054,9 @@ static int mt8195_mt6359_rt1019_rt5682_dev_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
 
+out:
+	of_node_put(hdmi_node);
+	of_node_put(dp_node);
 	of_node_put(platform_node);
 	return ret;
 }
-- 
2.18.0