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From: Johan Hovold <johan@kernel.org>
To: Srinivas Kandagatla <srini@kernel.org>, Mark Brown <broonie@kernel.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
	linux-sound@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org, Johan Hovold <johan@kernel.org>,
	Ma Ke <make24@iscas.ac.cn>
Subject: [PATCH] ASoC: codecs: pm4125: clean up bind() device reference handling
Date: Fri, 19 Dec 2025 15:24:12 +0100	[thread overview]
Message-ID: <20251219142412.19043-1-johan@kernel.org> (raw)

A recent change fixed a couple of device leaks on component bind failure
and on unbind but did so in a confusing way by adding misleading
initialisations at bind() and bogus NULL checks at unbind().

Cc: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/codecs/pm4125.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/sound/soc/codecs/pm4125.c b/sound/soc/codecs/pm4125.c
index 8bc3b9994019..43dcafff6c77 100644
--- a/sound/soc/codecs/pm4125.c
+++ b/sound/soc/codecs/pm4125.c
@@ -1505,10 +1505,6 @@ static int pm4125_bind(struct device *dev)
 	struct device_link *devlink;
 	int ret;
 
-	/* Initialize device pointers to NULL for safe cleanup */
-	pm4125->rxdev = NULL;
-	pm4125->txdev = NULL;
-
 	/* Give the soundwire subdevices some more time to settle */
 	usleep_range(15000, 15010);
 
@@ -1624,11 +1620,8 @@ static void pm4125_unbind(struct device *dev)
 	device_link_remove(dev, pm4125->rxdev);
 	device_link_remove(pm4125->rxdev, pm4125->txdev);
 
-	/* Release device references acquired in bind */
-	if (pm4125->txdev)
-		put_device(pm4125->txdev);
-	if (pm4125->rxdev)
-		put_device(pm4125->rxdev);
+	put_device(pm4125->txdev);
+	put_device(pm4125->rxdev);
 
 	component_unbind_all(dev, pm4125);
 }
-- 
2.51.2


             reply	other threads:[~2025-12-19 14:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-19 14:24 Johan Hovold [this message]
2025-12-20 18:58 ` [PATCH] ASoC: codecs: pm4125: clean up bind() device reference handling Dmitry Baryshkov
2025-12-22 22:12 ` Mark Brown

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