From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Mon, 17 Feb 2014 21:27:39 +0000 (-0700)
Subject: staging: comedi: pcl818: don't calc the timer divisors twice
X-Git-Tag: v3.15-rc1~139^2~944
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f4985a79ca5ba6a2eb0edeb3125a7e763c3e6cc2;p=pandora-kernel.git

staging: comedi: pcl818: don't calc the timer divisors twice

The timer divisors are calculated in the (*do_cmdtest) before the (*do_cmd)
is called by the comedi core. The extra sanity checks in the (*do_cmd) are
not necessary, the values returned from i8253_cascade_ns_to_timer() will be
greater than 1. Save the values in the private data so they don't need to be
recalced.

Refactor pcl818_start_pacer() to use the values from the private data.

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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