On 04/24/2012 05:49 PM, Lars-Peter Clausen wrote:
> We can not read back the value from the device, but we cache the value anyway so
> we might as well return the cached value instead of an error.
>
> Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx>
> ---
> drivers/staging/iio/dac/ad5446.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/staging/iio/dac/ad5446.c b/drivers/staging/iio/dac/ad5446.c
> index 731cd05..9dc67c8 100644
> --- a/drivers/staging/iio/dac/ad5446.c
> +++ b/drivers/staging/iio/dac/ad5446.c
> @@ -229,6 +229,9 @@ static int ad5446_read_raw(struct iio_dev *indio_dev,
> unsigned long scale_uv;
>
> switch (m) {
> + case IIO_CHAN_INFO_RAW:
> + *val = st->cached_val;
> + return IIO_VAL_INT;
> case IIO_CHAN_INFO_SCALE:
> scale_uv = (st->vref_mv * 1000) >> chan->scan_type.realbits;
> *val = scale_uv / 1000;
--
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