linux-kernel - [PATCH 3/3] ASoC: codecs: wcd939x: fix OF node leaks on probe failure

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Message-ID: <20251201093419.24474-4-johan@kernel.org>
Date: Mon,  1 Dec 2025 10:34:19 +0100
From: Johan Hovold <johan@...nel.org>
To: Srinivas Kandagatla <srini@...nel.org>,
	Mark Brown <broonie@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	linux-sound@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH 3/3] ASoC: codecs: wcd939x: fix OF node leaks on probe failure

The component match entry release function will drop the references
taken while looking up the soundwire OF nodes when the platform device
is unbound.

Drop the additional references taken to avoid leaking them on probe
failure (e.g. probe deferral) and on driver unbind.

Fixes: 10f514bd172a ("ASoC: codecs: Add WCD939x Codec driver")
Cc: Neil Armstrong <neil.armstrong@...aro.org>
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 sound/soc/codecs/wcd939x.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wcd939x.c b/sound/soc/codecs/wcd939x.c
index e74e6f013131..4f3be55370e2 100644
--- a/sound/soc/codecs/wcd939x.c
+++ b/sound/soc/codecs/wcd939x.c
@@ -3526,7 +3526,6 @@ static int wcd939x_add_slave_components(struct wcd939x_priv *wcd939x,
 		return -ENODEV;
 	}
 
-	of_node_get(wcd939x->rxnode);
 	component_match_add_release(dev, matchptr, component_release_of,
 				    component_compare_of, wcd939x->rxnode);
 
@@ -3535,7 +3534,7 @@ static int wcd939x_add_slave_components(struct wcd939x_priv *wcd939x,
 		dev_err(dev, "%s: Tx-device node not defined\n", __func__);
 		return -ENODEV;
 	}
-	of_node_get(wcd939x->txnode);
+
 	component_match_add_release(dev, matchptr, component_release_of,
 				    component_compare_of, wcd939x->txnode);
 	return 0;
-- 
2.51.2