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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	alsa-devel@alsa-project.org,
	Banajit Goswami <bgoswami@codeaurora.org>,
	Takashi Iwai <tiwai@suse.de>, Patrick Lai <plai@codeaurora.org>,
	Mark Brown <broonie@kernel.org>
Subject: [alsa-devel] [PATCH AUTOSEL 4.9 082/251] ASoC: qcom: Fix of-node refcount unbalance in apq8016_sbc_parse_of()
Date: Thu, 16 Jan 2020 12:33:51 -0500
Message-ID: <20200116173641.22137-42-sashal@kernel.org> (raw)
In-Reply-To: <20200116173641.22137-1-sashal@kernel.org>

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 8d1667200850f8753c0265fa4bd25c9a6e5f94ce ]

The apq8016 driver leaves the of-node refcount at aborting from the
loop of for_each_child_of_node() in the error path.  Not only the
iterator node of for_each_child_of_node(), the children nodes referred
from it for codec and cpu have to be properly unreferenced.

Fixes: bdb052e81f62 ("ASoC: qcom: add apq8016 sound card support")
Cc: Patrick Lai <plai@codeaurora.org>
Cc: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/qcom/apq8016_sbc.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/sound/soc/qcom/apq8016_sbc.c b/sound/soc/qcom/apq8016_sbc.c
index 07f91e918b23..754742018515 100644
--- a/sound/soc/qcom/apq8016_sbc.c
+++ b/sound/soc/qcom/apq8016_sbc.c
@@ -114,13 +114,15 @@ static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card)
 
 		if (!cpu || !codec) {
 			dev_err(dev, "Can't find cpu/codec DT node\n");
-			return ERR_PTR(-EINVAL);
+			ret = -EINVAL;
+			goto error;
 		}
 
 		link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
 		if (!link->cpu_of_node) {
 			dev_err(card->dev, "error getting cpu phandle\n");
-			return ERR_PTR(-EINVAL);
+			ret = -EINVAL;
+			goto error;
 		}
 
 		link->codec_of_node = of_parse_phandle(codec, "sound-dai", 0);
@@ -132,28 +134,37 @@ static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card)
 		ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name);
 		if (ret) {
 			dev_err(card->dev, "error getting cpu dai name\n");
-			return ERR_PTR(ret);
+			goto error;
 		}
 
 		ret = snd_soc_of_get_dai_name(codec, &link->codec_dai_name);
 		if (ret) {
 			dev_err(card->dev, "error getting codec dai name\n");
-			return ERR_PTR(ret);
+			goto error;
 		}
 
 		link->platform_of_node = link->cpu_of_node;
 		ret = of_property_read_string(np, "link-name", &link->name);
 		if (ret) {
 			dev_err(card->dev, "error getting codec dai_link name\n");
-			return ERR_PTR(ret);
+			goto error;
 		}
 
 		link->stream_name = link->name;
 		link->init = apq8016_sbc_dai_init;
 		link++;
+
+		of_node_put(cpu);
+		of_node_put(codec);
 	}
 
 	return data;
+
+ error:
+	of_node_put(np);
+	of_node_put(cpu);
+	of_node_put(codec);
+	return ERR_PTR(ret);
 }
 
 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
-- 
2.20.1

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  parent reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116173641.22137-1-sashal@kernel.org>
2020-01-16 17:33 ` [alsa-devel] [PATCH AUTOSEL 4.9 043/251] ASoC: imx-sgtl5000: put of nodes if finding codec fails Sasha Levin
2020-01-16 17:33 ` Sasha Levin [this message]
2020-01-16 17:34 ` [alsa-devel] [PATCH AUTOSEL 4.9 122/251] ALSA: usb-audio: Handle the error from snd_usb_mixer_apply_create_quirk() Sasha Levin
2020-01-16 17:34 ` [alsa-devel] [PATCH AUTOSEL 4.9 124/251] ASoC: fix valid stream condition Sasha Levin
2020-01-16 17:35 ` [alsa-devel] [PATCH AUTOSEL 4.9 156/251] ASoC: ti: davinci-mcasp: Fix slot mask settings when using multiple AXRs Sasha Levin
2020-01-16 17:35 ` [alsa-devel] [PATCH AUTOSEL 4.9 174/251] ALSA: aoa: onyx: always initialize register read value Sasha Levin
2020-01-16 17:35 ` [alsa-devel] [PATCH AUTOSEL 4.9 180/251] ASoC: es8328: Fix copy-paste error in es8328_right_line_controls Sasha Levin
2020-01-16 17:35 ` [alsa-devel] [PATCH AUTOSEL 4.9 181/251] ASoC: cs4349: Use PM ops 'cs4349_runtime_pm' Sasha Levin
2020-01-16 17:35 ` [alsa-devel] [PATCH AUTOSEL 4.9 182/251] ASoC: wm8737: Fix copy-paste error in wm8737_snd_controls Sasha Levin
2020-01-16 17:35 ` [alsa-devel] [PATCH AUTOSEL 4.9 184/251] ASoC: sun4i-i2s: RX and TX counter registers are swapped Sasha Levin

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