How to enable IIO driver in 3.18 kernel

[Valdis.Kletnieks at vt.edu]

On Wed, 01 Jun 2016 08:19:20 +0530, Munagala Naresh said:

> We are integrating one sensor driver in to LE platform. After adding sensor
> driver, it is creating device @ /sys/bus/iio/devices/iio:device0,1,2.

> Sensor driver makes use of IIO subsystem framework. We are not seeing iio
> device creation @ */dev/iio:device0*,1,2

The kernel is creating your device in /sys.  You need to either get udev knowing what
to do to mknod the /dev entry,  or check if your kernel config has:

CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y

so the kernel takes care of it for you.
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