From: Bernd Faust <berndfaust@gmail.com>
Date: Wed, 5 Dec 2012 14:16:49 +0000 (+0100)
Subject: Round the calculated scale factor in set_cyc2ns_scale()
X-Git-Tag: v3.9-rc1~170^2~5^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2353b47bffe4e6ab39042f470c55d41bb3ff3846;p=pandora-kernel.git

Round the calculated scale factor in set_cyc2ns_scale()

During some experiments with an external clock (in a FPGA), we saw that
the TSC clock drifted approx. 2.5ms per second.

This drift was caused by the current way of calculating the scale.
In our case cpu_khz had a value of 3292725. This resulted in a scale
value of 310. But when doing the calculation by hand it shows that the
actual value is 310.9886188491, so a value of 311 would be more precise.

With this change the value is rounded.

Signed-off-by: Bernd Faust <berndfaust@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
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