From 8f5d8727a7736024f28101b922d23754c67c2cc8 Mon Sep 17 00:00:00 2001
From: Vlad Dogaru <vlad.dogaru@intel.com>
Date: Mon, 29 Dec 2014 11:37:48 +0200
Subject: [PATCH] iio: ensure scan index is unique at device register

Having two or more channels with the same positive scan_index field
makes no sense if the device supports buffering.  Prevent this situation
by failing to register such a device.

Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Reading git-format-patch failed