intel_pstate: Avoid pointless FRAC_BITS shifts under div_fp()

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There are multiple places in intel_pstate where int_tofp() is applied
to both arguments of div_fp(), but this is pointless, because int_tofp()
simply shifts its argument to the left by FRAC_BITS which mathematically
is equivalent to multuplication by 2^FRAC_BITS, so if this is done
to both arguments of a division, the extra factors will cancel each
other during that operation anyway.

Drop the pointless int_tofp() applied to div_fp() arguments throughout
the driver.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Rafael J. Wysocki 2016-04-09 01:25:58 +02:00

parent 2249c00a0b

commit 22590efb98

1 changed files with 13 additions and 18 deletions

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drivers/cpufreq/intel_pstate.c

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