Commit 65de7654 authored Jan 01, 2015 by Fabien Proriol Committed by Jonathan Cameron Jan 01, 2015

iio: iio: Fix iio_channel_read return if channel havn't info



When xilinx-xadc is used with hwmon driver to read voltage, offset used
for temperature is always applied whatever the channel.

iio_channel_read must return an error to avoid offset for channel
without IIO_CHAN_INFO_OFFSET property.

Signed-off-by: Fabien Proriol <fabien.proriol@jdsu.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent 2eacc608

drivers/iio/inkern.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -426,6 +426,9 @@ static int iio_channel_read(struct iio_channel chan, int val, int *val2,
		if (val2 == NULL)
		val2 = &unused;

		if(!iio_channel_has_info(chan->channel, info))
		return -EINVAL;

		if (chan->indio_dev->info->read_raw_multi) {
		ret = chan->indio_dev->info->read_raw_multi(chan->indio_dev,
		chan->channel, INDIO_MAX_RAW_ELEMENTS,