From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 22 Oct 2014 21:36:36 +0000 (-0700)
Subject: staging: comedi: cb_pcidas: introduce cb_pcidas_ao_load_fifo()
X-Git-Tag: omap-for-v3.19/fixes-rc1~73^2~794
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2cc9854caf92526199935bc29685e253349362bc;p=pandora-kernel.git

staging: comedi: cb_pcidas: introduce cb_pcidas_ao_load_fifo()

Introduce a helper function to load the analog output FIFO.

This fixes a bug in cb_pcidas_ao_inttrig(). That function was writing
'num_bytes' data values to the FIFO instead of 'num_points'. This results
in twice the number of data values getting written to the FIFO.

Use comedi_buf_read_samples() read the analog output samples from the async
buffer.

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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