intel_pstate: Correct rounding in busy calculation
authorDirk Brandewie <dirk.j.brandewie@intel.com>
Thu, 29 May 2014 16:32:23 +0000 (09:32 -0700)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 2 Jun 2014 10:44:59 +0000 (12:44 +0200)
commitf0fe3cd7e12d8290c82284b5c8aee723cbd0371a
tree8cb72c5039750da308ff05dab076a0c455e9bf15
parentadacdf3f2b8e65aa441613cf61c4f598e9042690
intel_pstate: Correct rounding in busy calculation

Changing to fixed point math throughout the busy calculation in
commit e66c1768 (Change busy calculation to use fixed point
math.) Introduced some inaccuracies by rounding the busy value at two
points in the calculation.  This change removes roundings and moves
the rounding to the output of the PID where the calculations are
complete and the value returned as an integer.

Fixes: e66c17683746 (intel_pstate: Change busy calculation to use fixed point math.)
Reported-by: Doug Smythies <dsmythies@telus.net>
Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpufreq/intel_pstate.c