From 26234771c1a53b0a3bf69c161d79cd37c77ebd1a Mon Sep 17 00:00:00 2001
From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Mon, 22 Apr 2013 18:36:28 -0700
Subject: [PATCH] staging: comedi: das800: tidy up das800_do_insn_bits()

Use a couple local variables, mask and bits, to clarify this function.

Its only necessary to update the outputs if the mask indicates that
the bits are changing. Modify this function accordingly. Also, use
the subdevice 'state' variable to hold the actual output channel
state instead of needing to get it from the private data and shift
it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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