linux-kernel - [PATCH v2 3/6] staging: iio: ad9832: convert to devm_mutex

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Message-ID: <20251230203459.28935-4-tomasborquez13@gmail.com>
Date: Tue, 30 Dec 2025 17:34:56 -0300
From: Tomas Borquez <tomasborquez13@...il.com>
To: Jonathan Cameron <jic23@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>
Cc: David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org,
	linux-staging@...ts.linux.dev,
	Tomas Borquez <tomasborquez13@...il.com>
Subject: [PATCH v2 3/6] staging: iio: ad9832: convert to devm_mutex_init()

Use devm_mutex_init() for automatic resource cleanup when the device
is removed or probe fails.

Signed-off-by: Tomas Borquez <tomasborquez13@...il.com>
---
 drivers/staging/iio/frequency/ad9832.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c
index 35d8d51d5c2b..4bb203a67046 100644
--- a/drivers/staging/iio/frequency/ad9832.c
+++ b/drivers/staging/iio/frequency/ad9832.c
@@ -310,7 +310,9 @@ static int ad9832_probe(struct spi_device *spi)
 		return dev_err_probe(dev, PTR_ERR(st->mclk), "failed to enable MCLK\n");
 
 	st->spi = spi;
-	mutex_init(&st->lock);
+	ret = devm_mutex_init(&spi->dev, &st->lock);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to initialize mutex\n");
 
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad9832_info;
-- 
2.43.0