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iio: imu: adis: group single conversion under a single state lock 

The single conversion function does a series of reads + writes. This change
extends the use of the state_lock for the entire set of operations.
Previously, indio_dev's mlock was used. This change also removes the use of
this lock.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2019-11-22 15:24:17 +02:00 committed by Jonathan Cameron
parent cb5a07f1f1
commit c5485a5d6a
1 changed files with 4 additions and 4 deletions
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8
drivers/iio/imu/adis.c
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@ -404,15 +404,15 @@ int adis_single_conversion(struct iio_dev *indio_dev,
unsigned int uval; unsigned int uval;
int ret; int ret;
mutex_lock(&indio_dev->mlock); mutex_lock(&adis->state_lock);
ret = adis_read_reg(adis, chan->address, &uval, ret = __adis_read_reg(adis, chan->address, &uval,
chan->scan_type.storagebits / 8); chan->scan_type.storagebits / 8);
if (ret) if (ret)
goto err_unlock; goto err_unlock;
if (uval & error_mask) { if (uval & error_mask) {
ret = adis_check_status(adis); ret = __adis_check_status(adis);
if (ret) if (ret)
goto err_unlock; goto err_unlock;
} }
@ -424,7 +424,7 @@ int adis_single_conversion(struct iio_dev *indio_dev,
ret = IIO_VAL_INT; ret = IIO_VAL_INT;
err_unlock: err_unlock:
mutex_unlock(&indio_dev->mlock); mutex_unlock(&adis->state_lock);
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(adis_single_conversion); EXPORT_SYMBOL_GPL(adis_single_conversion);