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| author | Kristen Carlson Accardi <kristen@linux.intel.com> | 2015-04-10 20:21:09 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-04-11 03:13:28 +0300 |
| commit | 5f97899d780787a8bbb42dee3be91ab5d8003b7f (patch) | |
| tree | 5d36e3c5a9357645f1a840f508995963c698012c /drivers/cpufreq | |
| parent | 4492d1a2e9566495858d25b35093e11509707407 (diff) | |
| download | linux-5f97899d780787a8bbb42dee3be91ab5d8003b7f.tar.xz | |
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>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 872c5772c5d3..8006d86da397 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -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; } |