[PATCH v2 3/6] staging: iio: ad9832: convert to devm_mutex_init()

[Tomas Borquez]

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

Signed-off-by: Tomas Borquez <tomasborquez13@xxxxxxxxx>
---
 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