linux-kernel - [PATCH v4 1/2] iio: trigger: add missing mutex_destroy in iio_trig

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Message-Id: <20251110035701.36691-1-make24@iscas.ac.cn>
Date: Mon, 10 Nov 2025 11:57:01 +0800
From: Ma Ke <make24@...as.ac.cn>
To: jic23@...nel.org,
	dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org
Cc: linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org,
	Ma Ke <make24@...as.ac.cn>
Subject: [PATCH v4 1/2] iio: trigger: add missing mutex_destroy in iio_trig_release

Add missing mutex_destroy() call in iio_trig_release() to properly
clean up the mutex initialized in viio_trigger_alloc(). Ensure proper
resource cleanup and follows kernel practices.

Found by code review.

Signed-off-by: Ma Ke <make24@...as.ac.cn>
---
Changes in v4:
- split the patch into two independent patches and modified according to developer's suggestions;
Changes in v3:
- modified the patch;
Changes in v2:
- modified the patch, thanks for developer's suggestions.
---
 drivers/iio/industrialio-trigger.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 54416a384232..5baa83349e8f 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -524,6 +524,7 @@ static void iio_trig_release(struct device *device)
 			       CONFIG_IIO_CONSUMERS_PER_TRIGGER);
 	}
 	kfree(trig->name);
+	mutex_destroy(&trig->pool_lock);
 	kfree(trig);
 }
 
-- 
2.17.1