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staging:iio:impedance-analyser make use of iio_sw_buffer_preenable 

This avoids some code duplication by using the generic form
in a non performance critical place.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jonathan Cameron 2012-04-21 10:09:43 +01:00 committed by Greg Kroah-Hartman
parent c562ccbf58
commit f5ee7b807f
1 changed files with 3 additions and 8 deletions
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11
drivers/staging/iio/impedance-analyzer/ad5933.c
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@ -569,19 +569,14 @@ static const struct iio_info ad5933_info = {
static int ad5933_ring_preenable(struct iio_dev *indio_dev)
{
struct ad5933_state *st = iio_priv(indio_dev);
size_t d_size;
int ret;
if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
return -EINVAL;
d_size = bitmap_weight(indio_dev->active_scan_mask,
indio_dev->masklength) *
ad5933_channels[1].scan_type.storagebits / 8;
if (indio_dev->buffer->access->set_bytes_per_datum)
indio_dev->buffer->access->
set_bytes_per_datum(indio_dev->buffer, d_size);
ret = iio_sw_buffer_preenable(indio_dev);
if (ret < 0)
return ret;
ret = ad5933_reset(st);
if (ret < 0)