diff options
| author | Jonathan Cameron <jic23@kernel.org> | 2012-04-21 09:09:39 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-24 18:23:37 (GMT) |
| commit | 81a4fc01217c12b42af8a992dcf7fa9cc8373297 (patch) | |
| tree | 6bdf71c4e232b377048d793c4919638ceda12561 /drivers/staging/iio/adc/ad7793.c | |
| parent | 46df6378c8484eb3ae054938ffb17c2bea691f7b (diff) | |
| download | linux-fsl-qoriq-81a4fc01217c12b42af8a992dcf7fa9cc8373297.tar.xz | |
staging:iio:adc:ad7793 use iio_sw_buffer_preenable to avoid repitition.
Now the generic function caches the scan size a lot of what was here
was redundant and is removed.
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>
Diffstat (limited to 'drivers/staging/iio/adc/ad7793.c')
| -rw-r--r-- | drivers/staging/iio/adc/ad7793.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c index 9d21e39..2aeeaa2 100644 --- a/drivers/staging/iio/adc/ad7793.c +++ b/drivers/staging/iio/adc/ad7793.c @@ -319,31 +319,18 @@ out: static int ad7793_ring_preenable(struct iio_dev *indio_dev) { struct ad7793_state *st = iio_priv(indio_dev); - struct iio_buffer *ring = indio_dev->buffer; - size_t d_size; unsigned channel; + int ret; if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) return -EINVAL; + ret = iio_sw_buffer_preenable(indio_dev); + if (ret < 0) + return ret; channel = find_first_bit(indio_dev->active_scan_mask, indio_dev->masklength); - d_size = bitmap_weight(indio_dev->active_scan_mask, - indio_dev->masklength) * - indio_dev->channels[0].scan_type.storagebits / 8; - - if (ring->scan_timestamp) { - d_size += sizeof(s64); - - if (d_size % sizeof(s64)) - d_size += sizeof(s64) - (d_size % sizeof(s64)); - } - - if (indio_dev->buffer->access->set_bytes_per_datum) - indio_dev->buffer->access-> - set_bytes_per_datum(indio_dev->buffer, d_size); - st->mode = (st->mode & ~AD7793_MODE_SEL(-1)) | AD7793_MODE_SEL(AD7793_MODE_CONT); st->conf = (st->conf & ~AD7793_CONF_CHAN(-1)) | |