From 65de7654d39c70c2b942f801cea01590cf7e3458 Mon Sep 17 00:00:00 2001
From: Fabien Proriol <fabien.proriol@jdsu.com>
Date: Thu, 1 Jan 2015 12:46:48 +0000
Subject: [PATCH] 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>
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