Revert "cpufreq: intel_pstate: Use ACPI perf configuration"
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 18 Nov 2015 23:20:42 +0000 (00:20 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 18 Nov 2015 23:20:42 +0000 (00:20 +0100)
commit6ee11e413c495390dacabd96ad462eea9de9dfbd
tree40fcd53a0106cb0e86d51ccc4cd378cf1b7406cf
parent799281a3c481a738801bf17e3079a6f91df56cd3
Revert "cpufreq: intel_pstate: Use ACPI perf configuration"

Revert commit 37afb0003242 (cpufreq: intel_pstate: Use ACPI perf
configuration) that is reported to cause a regression to happen
on a system where invalid data are returned by the ACPI _PSS object.

Since that commit makes assumptions regarding the _PSS output
correctness that may turn out to be overly optimistic in general,
there is a concern that it may introduce regression on more
systems, so it's better to revert it now and we'll revisit the
underlying issue in the next cycle with a more robust solution.

Conflicts:
        drivers/cpufreq/intel_pstate.c

Fixes: 37afb0003242 (cpufreq: intel_pstate: Use ACPI perf configuration)
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpufreq/Kconfig.x86
drivers/cpufreq/intel_pstate.c