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staging: adis16203: Remove locking on raw reads of IIO_CHAN_INFO_CALIBBIAS

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adis16203_read_raw does not need lock for IIO_CHAN_INFO_CALIBBIAS
since adis_read_reg_16 is already atomic and nothing else needs to be
protected.

Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Gargi Sharma 2017-03-20 14:00:42 +05:30 committed by Jonathan Cameron
parent 745c6dad49
commit 66893ea375
1 changed files with 0 additions and 3 deletions
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3
drivers/staging/iio/accel/adis16203.c
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@ -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;