diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c
index b59755aedd8b..faa2869b5431 100644
--- a/drivers/staging/iio/accel/adis16203.c
+++ b/drivers/staging/iio/accel/adis16203.c
@@ -203,17 +203,14 @@ static int adis16203_read_raw(struct iio_dev *indio_dev,
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_CALIBBIAS:
 		bits = 14;
-		mutex_lock(&indio_dev->mlock);
 		addr = adis16203_addresses[chan->scan_index];
 		ret = adis_read_reg_16(st, addr, &val16);
 		if (ret) {
-			mutex_unlock(&indio_dev->mlock);
 			return ret;
 		}
 		val16 &= (1 << bits) - 1;
 		val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
 		*val = val16;
-		mutex_unlock(&indio_dev->mlock);
 		return IIO_VAL_INT;
 	default:
 		return -EINVAL;