cpufreq: intel_pstate: Fix processing for turbo activation ratio

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commit 1becf03545 upstream.

When the config TDP level is not nominal (level = 0), the MSR values for
reading level 1 and level 2 ratios contain power in low 14 bits and actual
ratio bits are at bits [23:16]. The current processing for level 1 and
level 2 is wrong as there is no shift done to get actual ratio.

Fixes: 6a35fc2d6c (cpufreq: intel_pstate: get P1 from TAR when available)
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Srinivas Pandruvada 2016-04-22 19:53:59 -07:00 • committed by Greg Kroah-Hartman

parent 54aeb5854e

commit 61fe67520c

1 changed files with 5 additions and 0 deletions

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drivers/cpufreq/intel_pstate.c

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