linux-kernel - [PATCH] iio: adc: ad7124: use devm_mutex

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Message-Id: <20250917-iio-adc-ad7124-use-devm_mutex_init-v1-1-ff23fe3ad954@baylibre.com>
Date: Wed, 17 Sep 2025 10:22:30 -0500
From: David Lechner <dlechner@...libre.com>
To: Michael Hennerich <Michael.Hennerich@...log.com>, 
 Jonathan Cameron <jic23@...nel.org>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Andy Shevchenko <andy@...nel.org>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 David Lechner <dlechner@...libre.com>
Subject: [PATCH] iio: adc: ad7124: use devm_mutex_init()

Use devm_mutex_init() to initialize the mutex to handle automatically
freeing in debug builds.

Signed-off-by: David Lechner <dlechner@...libre.com>
---
 drivers/iio/adc/ad7124.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index 9ace3e0914f5acab695c0382df758f56f333ae72..9d9250274b9a02e2982e6ceda27009a84413dc2f 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -1482,7 +1482,10 @@ static int ad7124_setup(struct ad7124_state *st)
 	st->adc_control &= ~AD7124_ADC_CONTROL_MODE;
 	st->adc_control |= FIELD_PREP(AD7124_ADC_CONTROL_MODE, AD_SD_MODE_IDLE);
 
-	mutex_init(&st->cfgs_lock);
+	ret = devm_mutex_init(dev, &st->cfgs_lock);
+	if (ret)
+		return ret;
+
 	INIT_KFIFO(st->live_cfgs_fifo);
 	for (i = 0; i < st->num_channels; i++) {
 		struct ad7124_channel_config *cfg = &st->channels[i].cfg;

---
base-commit: 561285d048053fec8a3d6d1e3ddc60df11c393a0
change-id: 20250917-iio-adc-ad7124-use-devm_mutex_init-45a297b1ff8f

Best regards,
-- 
David Lechner <dlechner@...libre.com>