1 files changed, 11 insertions, 23 deletions

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 0d159b513469..fe9dc17ea873 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -372,26 +372,9 @@ static bool intel_pstate_get_ppc_enable_status(void)
         return acpi_ppc;
 }
 
-/*
- * The max target pstate ratio is a 8 bit value in both PLATFORM_INFO MSR and
- * in TURBO_RATIO_LIMIT MSR, which pstate driver stores in max_pstate and
- * max_turbo_pstate fields. The PERF_CTL MSR contains 16 bit value for P state
- * ratio, out of it only high 8 bits are used. For example 0x1700 is setting
- * target ratio 0x17. The _PSS control value stores in a format which can be
- * directly written to PERF_CTL MSR. But in intel_pstate driver this shift
- * occurs during write to PERF_CTL (E.g. for cores core_set_pstate()).
- * This function converts the _PSS control value to intel pstate driver format
- * for comparison and assignment.
- */
-static int convert_to_native_pstate_format(struct cpudata *cpu, int index)
-{
-        return cpu->acpi_perf_data.states[index].control >> 8;
-}
-
 static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy)
 {
         struct cpudata *cpu;
-        int turbo_pss_ctl;
         int ret;
         int i;
 
@@ -441,11 +424,10 @@ static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy)
          * max frequency, which will cause a reduced performance as
          * this driver uses real max turbo frequency as the max
          * frequency. So correct this frequency in _PSS table to
-         * correct max turbo frequency based on the turbo ratio.
+         * correct max turbo frequency based on the turbo state.
          * Also need to convert to MHz as _PSS freq is in MHz.
          */
-        turbo_pss_ctl = convert_to_native_pstate_format(cpu, 0);
-        if (turbo_pss_ctl > cpu->pstate.max_pstate)
+        if (!limits->turbo_disabled)
                 cpu->acpi_perf_data.states[0].core_frequency =
                                         policy->cpuinfo.max_freq / 1000;
         cpu->valid_pss_table = true;
@@ -1460,6 +1442,9 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
 
         intel_pstate_clear_update_util_hook(policy->cpu);
 
+        pr_debug("set_policy cpuinfo.max %u policy->max %u\n",
+                 policy->cpuinfo.max_freq, policy->max);
+
         cpu = all_cpu_data[0];
         if (cpu->pstate.max_pstate_physical > cpu->pstate.max_pstate &&
             policy->max < policy->cpuinfo.max_freq &&
@@ -1495,13 +1480,13 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
                                    limits->max_sysfs_pct);
         limits->max_perf_pct = max(limits->min_policy_pct,
                                    limits->max_perf_pct);
-        limits->max_perf = round_up(limits->max_perf, FRAC_BITS);
 
         /* Make sure min_perf_pct <= max_perf_pct */
         limits->min_perf_pct = min(limits->max_perf_pct, limits->min_perf_pct);
 
         limits->min_perf = div_fp(limits->min_perf_pct, 100);
         limits->max_perf = div_fp(limits->max_perf_pct, 100);
+        limits->max_perf = round_up(limits->max_perf, FRAC_BITS);
 
  out:
         intel_pstate_set_update_util_hook(policy->cpu);
@@ -1558,8 +1543,11 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
 
         /* cpuinfo and default policy values */
         policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling;
-        policy->cpuinfo.max_freq =
-                cpu->pstate.turbo_pstate * cpu->pstate.scaling;
+        update_turbo_state();
+        policy->cpuinfo.max_freq = limits->turbo_disabled ?
+                        cpu->pstate.max_pstate : cpu->pstate.turbo_pstate;
+        policy->cpuinfo.max_freq *= cpu->pstate.scaling;
+
         intel_pstate_init_acpi_perf_limits(policy);
         policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
         cpumask_set_cpu(policy->cpu, policy->cpus);