Re: [PATCH] 0001-xilinx-xadc-core-Fix-voltage-offset.patch

[Fabien Proriol <Fabien.Proriol@jdsu.com>]

>From bdeab2d72a00587eac15eb91ec0820ff6d11bfe8 Mon Sep 17 00:00:00 2001
From: Fabien Proriol <fabien.proriol@jdsu.com>
Date: Mon, 17 Nov 2014 09:46:02 +0100
Subject: [PATCH] iio: Fix iio_channel_read return if channel havn't info

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>
---
 drivers/iio/inkern.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 1e8e94d..917eb00 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -423,6 +423,9 @@ static int iio_channel_read(struct iio_channel *chan, i=
nt *val, int *val2,
 	if (val2 =3D=3D NULL)
 		val2 =3D &unused;
=20
+	if(!iio_channel_has_info(chan->channel, info))
+		return -EINVAL;
+
 	return chan->indio_dev->info->read_raw(chan->indio_dev, chan->channel,
 						val, val2, info);
 }
--=20
2.0.4