linux-kernel - [PATCH] ASoC: rsnd: Fix an error handling path in 'rsnd_node

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Date:   Mon, 18 Oct 2021 21:44:16 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, kuninori.morimoto.gx@...esas.com,
        mikhail_durnev@...tor.com, joe@...ches.com,
        pierre-louis.bossart@...ux.intel.com
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] ASoC: rsnd: Fix an error handling path in 'rsnd_node_count()'

If we return before the end of the 'for_each_child_of_node()' iterator, the
reference taken on 'np' must be released.

Add the missing 'of_node_put()' call.

Fixes: c413983eb66a ("ASoC: rsnd: adjust disabled module")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 sound/soc/sh/rcar/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 978bd0406729..6a8fe0da7670 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -1225,6 +1225,7 @@ int rsnd_node_count(struct rsnd_priv *priv, struct device_node *node, char *name
 		if (i < 0) {
 			dev_err(dev, "strange node numbering (%s)",
 				of_node_full_name(node));
+			of_node_put(np);
 			return 0;
 		}
 		i++;
-- 
2.30.2