From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 22 Oct 2014 21:36:37 +0000 (-0700)
Subject: staging: comedi: cb_pcidas: introduce cb_pcidas64_ao_fill_buffer()
X-Git-Tag: omap-for-v3.19/fixes-rc1~73^2~793
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7bd7d905629a8748fa43d20b930213f54ac9177d;p=pandora-kernel.git

staging: comedi: cb_pcidas: introduce cb_pcidas64_ao_fill_buffer()

Introduce a helper function to read the analog output samples from the
async buffer.

This fixes a bug in load_ao_dma_buffer(). That function was decrementing
the 'ao_count' by the number of bytes, not the number of samples, that
were read from the async buffer.

Use comedi_buf_read_samples() to 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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