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Commit 5f97899d authored by Kristen Carlson Accardi's avatar Kristen Carlson Accardi Committed by Rafael J. Wysocki
Browse files

intel_pstate: remove MSR test 



x86_match_cpu will not match our cpuid unless APERF/MPERF flag is
set, so there is no need to do the manual check for this MSR.

Signed-off-by: default avatarKristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 4492d1a2

drivers/cpufreq/intel_pstate.c

+0 −14
Original line number Diff line number Diff line
@@ -1024,25 +1024,11 @@ static unsigned int force_load; 


static int intel_pstate_msrs_not_valid(void)

{

	/* Check that all the msr's we are using are valid. */

	u64 aperf, mperf, tmp;



	rdmsrl(MSR_IA32_APERF, aperf);

	rdmsrl(MSR_IA32_MPERF, mperf);



	if (!pstate_funcs.get_max() ||

	    !pstate_funcs.get_min() ||

	    !pstate_funcs.get_turbo())

		return -ENODEV;



	rdmsrl(MSR_IA32_APERF, tmp);

	if (!(tmp - aperf))

		return -ENODEV;



	rdmsrl(MSR_IA32_MPERF, tmp);

	if (!(tmp - mperf))

		return -ENODEV;



	return 0;

}