From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Mon, 14 Jul 2014 19:23:43 +0000 (-0700)
Subject: staging: comedi: ni_mio_common: fix ni_ao_insn_write()
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~166^2~689
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bfb0c28ba03a46740c80848ba7b93fafb91de033;p=pandora-kernel.git

staging: comedi: ni_mio_common: fix ni_ao_insn_write()

Comedi (*insn_write) functions are expected to write insn->n values
to the hardware. Fix this function to work like the core expects.

Also, don't rely on the return value of ni_ao_comfig_chanlist() to
determine if the values need converted to two's complement before
writing to the hardware. Use the comedi_range_is_bipolar() and
comedi_offset_munge() helpers to clarify the code.

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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