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: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 872c577..8006d86 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1024,25 +1024,11 @@
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;
}
