iio: dac: ltc2664: Use devm_mutex_init()

Use devm_mutex_init() which is helpful with CONFIG_DEBUG_MUTEXES.

Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/dac/ltc2664.c b/drivers/iio/dac/ltc2664.c
index 67f14046cf77356b4513c6ef360f847298deb4cf..616806615d3de577845059296a9e09d6d354e65b 100644 (file)
--- a/drivers/iio/dac/ltc2664.c
+++ b/drivers/iio/dac/ltc2664.c
@@ -675,7 +675,9 @@ static int ltc2664_probe(struct spi_device *spi)
 
        st->chip_info = chip_info;
 
-       mutex_init(&st->lock);
+       ret = devm_mutex_init(dev, &st->lock);
+       if (ret)
+               return ret;
 
        st->regmap = devm_regmap_init_spi(spi, &ltc2664_regmap_config);
        if (IS_ERR(st->regmap))