diff mbox

intel_pstate: remove MSR test

Message ID 1428686469-10441-1-git-send-email-kristen@linux.intel.com (mailing list archive)
State Accepted, archived
Delegated to: Rafael Wysocki
Headers show

Commit Message

Kristen Carlson Accardi April 10, 2015, 5:21 p.m. UTC 
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>
---
 drivers/cpufreq/intel_pstate.c | 14 --------------
 1 file changed, 14 deletions(-)
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Patch

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index a1dd871..c5b81be 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1055,25 +1055,11 @@  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;
 }