From: Miaoqian Lin <linmq006@gmail.com>
To: Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
Miaoqian Lin <linmq006@gmail.com>,
alsa-devel@alsa-project.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] ASoC: mxs: Fix error handling in mxs_sgtl5000_probe
Date: Tue, 8 Mar 2022 02:01:44 +0000 [thread overview]
Message-ID: <20220308020146.26496-1-linmq006@gmail.com> (raw)
This function only calls of_node_put() in the regular path.
And it will cause refcount leak in error paths.
For example, when codec_np is NULL, saif_np[0] and saif_np[1]
are not NULL, it will cause leaks.
of_node_put() will check if the node pointer is NULL, so we can
call it directly to release the refcount of regular pointers.
Fixes: e968194b45c4 ("ASoC: mxs: add device tree support for mxs-sgtl5000")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
sound/soc/mxs/mxs-sgtl5000.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/sound/soc/mxs/mxs-sgtl5000.c b/sound/soc/mxs/mxs-sgtl5000.c
index 2412dc7e65d4..746f40938675 100644
--- a/sound/soc/mxs/mxs-sgtl5000.c
+++ b/sound/soc/mxs/mxs-sgtl5000.c
@@ -118,6 +118,9 @@ static int mxs_sgtl5000_probe(struct platform_device *pdev)
codec_np = of_parse_phandle(np, "audio-codec", 0);
if (!saif_np[0] || !saif_np[1] || !codec_np) {
dev_err(&pdev->dev, "phandle missing or invalid\n");
+ of_node_put(codec_np);
+ of_node_put(saif_np[0]);
+ of_node_put(saif_np[1]);
return -EINVAL;
}
--
2.17.1
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next reply other threads:[~2022-03-08 2:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-08 2:01 Miaoqian Lin [this message]
2022-03-08 17:21 ` [PATCH] ASoC: mxs: Fix error handling in mxs_sgtl5000_probe Mark Brown
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