From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 29 Apr 2014 19:59:29 +0000 (-0700)
Subject: staging: comedi: cb_pcidas: don't calc ao pacer divisors twice
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~36^2~1074
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33eafb7761d244a3d41a25b56dd17ba05634907e;p=pandora-kernel.git

staging: comedi: cb_pcidas: don't calc ao pacer divisors twice

The analog output async command can use the pacer for the scan_begin_src.
The (*do_cmdtest) calculates the divisors when validating the cmd argument.

There is no reason to recalc the divisors in the (*do_cmd). Just use the
values from the private data.

For aesthetics, factor out the code that loads the counters to match the
analog input. Refactor the code to use the i8254_set_mode() and i8254_write()
helpers instead of i8254_load(). This allows us to use the I8254_* defines
when setting the mode 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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