iio: dac: ad5755: 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/ad5755.c b/drivers/iio/dac/ad5755.c
index d0e5f35462b1b811c32f39a47d855729928df679..cc6d56140d6672d35602a3edaef6432fc3b7a1d6 100644 (file)
--- a/drivers/iio/dac/ad5755.c
+++ b/drivers/iio/dac/ad5755.c
@@ -827,8 +827,9 @@ static int ad5755_probe(struct spi_device *spi)
        indio_dev->modes = INDIO_DIRECT_MODE;
        indio_dev->num_channels = AD5755_NUM_CHANNELS;
 
-       mutex_init(&st->lock);
-
+       ret = devm_mutex_init(&spi->dev, &st->lock);
+       if (ret)
+               return ret;
 
        pdata = ad5755_parse_fw(&spi->dev);
        if (!pdata) {