From: Nuno Sá <nuno.sa@analog.com>
Date: Tue, 23 Sep 2025 08:41:47 +0000 (+0100)
Subject: iio: dac: ltc2688: make use of devm_mutex_init()
X-Git-Tag: v6.19-rc1~65^2~58^2~130
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=620636f497337a9faedba336d3388091c9a540e9;p=thirdparty%2Fkernel%2Flinux.git

iio: dac: ltc2688: make use of devm_mutex_init()

Use devm_mutex_init() since it brings some benefits when
CONFIG_DEBUG_MUTEXES is enabled.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c
index 7a2ee26a7d687..57028d422868e 100644
--- a/drivers/iio/dac/ltc2688.c
+++ b/drivers/iio/dac/ltc2688.c
@@ -953,7 +953,9 @@ static int ltc2688_probe(struct spi_device *spi)
 
 	/* Just write this once. No need to do it in every regmap read. */
 	st->tx_data[3] = LTC2688_CMD_NOOP;
-	mutex_init(&st->lock);
+	ret = devm_mutex_init(dev, &st->lock);
+	if (ret)
+		return ret;
 
 	st->regmap = devm_regmap_init(dev, &ltc2688_regmap_bus, st,
 				      &ltc2688_regmap_config);