event values are 10 or 12 bit max., and need to be left-shifted on ad7993, ad7997 Signed-off-by: Peter Meerwald <pmeerw@xxxxxxxxxx> --- drivers/iio/adc/ad799x.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index 0d8e950..dbc7c2b 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -368,9 +368,13 @@ static int ad799x_write_event_value(struct iio_dev *indio_dev, int ret; struct ad799x_state *st = iio_priv(indio_dev); + if (val > GENMASK(chan->scan_type.realbits - 1, 0)) + return -EINVAL; + mutex_lock(&indio_dev->mlock); ret = i2c_smbus_write_word_swapped(st->client, - ad799x_threshold_reg(chan, dir, info), val); + ad799x_threshold_reg(chan, dir, info), + val << chan->scan_type.shift); mutex_unlock(&indio_dev->mlock); return ret; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
