linux-kernel - [PATCH v4 3/4] ASoC: imx-audmix: fix object reference leaks in probe

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Date:   Wed, 10 Apr 2019 11:06:38 +0000
From:   Viorel Suman <viorel.suman@....com>
To:     Timur Tabi <timur@...nel.org>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Takashi Iwai <tiwai@...e.com>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Julia Lawall <Julia.Lawall@...6.fr>
CC:     Viorel Suman <viorel.suman@....com>,
        Viorel Suman <viorel.suman@...il.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v4 3/4] ASoC: imx-audmix: fix object reference leaks in probe

Release the reference to the underlying device taken
by of_find_device_by_node() call.

Signed-off-by: Viorel Suman <viorel.suman@....com>
Reported-by: Julia Lawall <Julia.Lawall@...6.fr>
Acked-by: Nicolin Chen <nicoleotsuka@...il.com>
---
 sound/soc/fsl/imx-audmix.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/fsl/imx-audmix.c b/sound/soc/fsl/imx-audmix.c
index 7983bd3..9aaf3e5 100644
--- a/sound/soc/fsl/imx-audmix.c
+++ b/sound/soc/fsl/imx-audmix.c
@@ -171,6 +171,7 @@ static int imx_audmix_probe(struct platform_device *pdev)
 			np->full_name);
 		return -EINVAL;
 	}
+	put_device(&audmix_pdev->dev);
 
 	num_dai = of_count_phandle_with_args(audmix_np, "dais", NULL);
 	if (num_dai != FSL_AUDMIX_MAX_DAIS) {
@@ -216,6 +217,7 @@ static int imx_audmix_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev, "failed to find SAI platform device\n");
 			return -EINVAL;
 		}
+		put_device(&cpu_pdev->dev);
 
 		dai_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s%s",
 					  fe_name_pref, args.np->full_name + 1);
@@ -280,6 +282,8 @@ static int imx_audmix_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "failed to find SAI platform device\n");
 		return -EINVAL;
 	}
+	put_device(&cpu_pdev->dev);
+
 	priv->cpu_mclk = devm_clk_get(&cpu_pdev->dev, "mclk1");
 	if (IS_ERR(priv->cpu_mclk)) {
 		ret = PTR_ERR(priv->cpu_mclk);
-- 
2.7.4