From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Fri, 20 Sep 2013 23:44:08 +0000 (-0700)
Subject: staging: comedi: pcl711: no need to calc the timer values twice
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~62^2~657
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8fbf1f4569634e950c1ebc46b0bad612ea404b00;p=pandora-kernel.git

staging: comedi: pcl711: no need to calc the timer values twice

The comedi core always calls the (*do_cmdtest) function to validate
a command before it calls the (*do_cmd) function.

Since the (*do_cmdtest) has already calculated the timer values in
order to validate the cmd->scan_begin_arg there is no reason to
recalc the values in the (*do_cmd).

This also fixes a bug in the driver. The (*do_cmdtest) was using a
time base value of 100 and but the (*do_cmd) was using a time base
of 500. These result in different timer values. The functions used
to calculate the values are actually the same due to a #define in
the 8253.h header.

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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