From: H Hartley Sweeten <hartleys@visionengravers.com>
Date: Tue, 6 Nov 2012 17:02:16 +0000 (-0700)
Subject: staging: comedi: addi_apci_3xxx: fix digital output 'insn_bits' function
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~84^2~562
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b70a4f4f97b70e8cd9d8a16983758aa4fc3450b;p=pandora-kernel.git

staging: comedi: addi_apci_3xxx: fix digital output 'insn_bits' function

This driver does not follow the comedi API. The digital output 'insn_bits'
function is passed a mask value in data[0] indicating which output bits in
data[1] are changing. The function is then supposed to update the outputs
accordingly and then return the current state of the outputs in data[1].

Fix the 'insn_bits' function so it works like the comedi core expects. The
core can then use the function to emulate the 'insn_read' and 'insn_write'
functions for individual channels.

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